Casing Accessories , completion tools, liner hanger system

PRIMARY CEMENTING

PRODUCT CATALOG

WELLCARE OIL TOOLS

WELLCARE OIL TOOLS PVT LTD

I

PRODUCT INDEX

PRODUCT TYPE Page No.

FLOAT

Cement Float Collar (WC-CFC) ……………………………………………………………….. 1

Cement Float Shoe (WC-CFS) ……………………………………………….……………… 1

Cement Down jet Swirl Guide Shoe (WC-CDGS)………………………………………….. 1

Cement Guide Shoe (WC-CGS)………………………………………………………………. 2

Circulating differential Fill Up Collar (WC-CDFC)………………………………………… 2

Circulating differential Fill Up Shoe (WC-CDFS)…………………………………………. 2

Differential Fill Up Down Jet Swirl Shoe (WC-DFDS)………………………….………….. 2

Cement Float Collar With Anti- Rotational Plugs (WC-CFC-AR)………………………… 3

Duplex Cement Float Shoe (WC-DCFS)………………………………………………… 3

Stab-In Float Shoe (WC-SIFS)……………………………………………………………….. 3

Stab-In Float Collar (WC-SIFC)……………………………………………………………….. 4

Auto fill Cement Float Shoe(WC-CFS-A)…………………………………………………. 4

Auto Fill Cement Float Collar (WC-CFC-A)…………………………………………………… 6

Cement Basket (WC-CBT)……………………………………………………………………….. 6

Butt-Weld Cement Float Collar (WC-BCFC)……………………………………………… 7

Butt-Weld Cement Float Shoe (WC-BCFS)………………………………..……………… 7

Slip-On cement Float Collar (WC-SCFC)…….. …………………………………………….. 7

Slip-On cement Float Shoe (WC-SCFS)…………………………………………..………….. 7

Stage Cementing Collar (WC-SCCZ)……………………………………………..………… 8

Hydraulic Opening Stage Cementing Collar (WC-HSCC)………………………………… 9

Three Stage Cementing Collar (WC-SCZW3)……………………………………………... 9

Stage Cementing Collar (WC-SCCX) ………………………………………………………. 10

PLUG Anti-Rotational Top Plug (WC-TP-AR)…………………………………………………………. 12

Anti-Rotational Bottom Plug (WC-BP-AR) …………………..……………………………… 13

Top Plug (WC-TP)………….…………………………………….……………………………. 13

Bottom Plug (WC-BP)……………………………………………...…………………………. 13

Top Plug Aluminum Core(WC-TP-AC) ………………………………………………………… 13

Bottom Plug Aluminum Core (WC-BP-AC)…………………….…………………………. 13

Latch down Wiper Plug (WC-WPLD)…………………………...…….……………………… 13

Combination Cementing Plug (WC-PCC)…………………….……..……………………… 14

Subsea Cementing Plug…………………………………………...………………………… 14

Top /Bottom Cementing Plug 15

Mechanical Stage Cementing Collar and Plug System Two Stage three Plug System Two Stage four Plug System Continuous two stages Cementing

Three Stage cementing


II

PRODUCT TYPE

Page No. Tapered Nose (WC-NST) …………………………………………………..…………...….… 21

Tapered Offset Nose (WC-NSOT) …………………………………..………………...….… 21

Stage Collar (Hydraulic & Mechanical)(WC-SCMH)……………...………..…….…… 22

Baffle Collar (WC-BCR)… ………………………………………………...…..……………. 24

Baffle Plate(WC-BPE)………. …………………………………………………...………….. 24

Thread Lock Compound …………………...………………………………….…….……… 24

API Modified Pipe Compound …………………………………………………..………… 24

Bow Spring Centralizer (WC-HNBSC/HWBSC/SWSRC)………………………….…….…. 29

Semi-Rigid Bow Spring Centralizer (WC-BCSS)………..……………………………….…. 33

Positive Bow Centralizer (WC-HNPBC/HWPBC/SWPBC)……………………………....… 35

Bow Spring Turbolizer (WC-HNBST/HWBST/SWBST)………..………………………….…... 37

Heavy Duty Weld Spiralizer/Centralizer (WC-HVS-L/HVS-R/HVC)…………..…………. 38

Slip-ON Weld Spiralizer/Centralizer (WC-SWS-L/SWS-R/SWC)………………………….. 39

Casted Spiralizer/ Centralizers ……………………………...……………………………...… 41

Conductor Pipe Centralizers (WC-CRPC)………………………………………………..… 45

Stop Collars ………………………………………………………………………………...…… 48

Wire Bristle Scratcher (WC-SCWS)…………………………………………………...…..…... 49

Wellbore Wipers (WC-SCWW) ………………………………………….…………………..... 49

Cement Baskets (WC-HWB/SWB) …………………………………………….……….…….. 50

CEMENTING HEAD Cementing Head (WC-CTHD)……….…………………………………………… 51


III

Wellcare Oil Tools Pvt. Ltd. welcomes you to its state-of-art of designing

and manufacturing of Float Equipment & primary cementing products.

Wellcare has developed a complete line of float equipment and cementing

accessories those have been proven around the world to meet the demanding

requirements of our customers.

Wellcare’s products are designed, manufactured, tested and inspected

at its manufacturing facility. In-house test facilities allow Wellcare to test the

products as per Industry standards. Additional testing simulation also carried

out in an environment with extreme conditions.

At Wellcare the use of electronic design media and 3D modeling allows

for precise and quick designs to be produced so as to meet unique and timely

requirements for our customers.

Many of the Wellcare’s products have been designed to meet specific

customer requirements resulting in new or improved products for use under

difficult well conditions. As a result of such interactions unique products for

use in high operating temperatures, at high pumping rates, in different

standard fluids and highly deviated wells are now produced.

Wellcare utilizes current leading edge technologies in the manufacture

and inspection of all products. Computer controlled machining, computer

controlled heat treatment, and automated production equipment and

computerized inspection equipment ensure that the high standards demanded

by the petroleum industry are achieved. Traceability of products is complied

to the requirements of API Specification Q-1 and ISO 9001 quality programs.

Wellcare maintains accreditation with International Organization for

Standardization (ISO 9001:2008, ISO 14001:2004 & OHSAS 18001).

WELLCARE clientele across the world’s most demanding markets

is a testimony to its knowledge, understanding and efficiency.


1

FLOAT EQUIPMENT CEMENT FLOAT COLLAR

(WC-CFC) (WC-30201)

CEMENT FLOAT SHOE

(WC-CFS) (WC-30101)

Cement/Poppet-type Float equipment offers

dependable performance for all classes oil and

gas wells. The valves prevent cement backflow,

provide casing buoyancy during run in, and act

as internal BOP's during the process of running

and cementing the casing.

Float equipment is manufactured to match

customer casing specification. All Poppet type

cement float collars are PDC drillable.

Cement Float Collar Cement Float

BENEFITS/FEATURES

• Fast drill-out

• No metal parts-will not damage PDC bits.

• Free-floating ball abrades evenly.

• No springs.

• Operator-controlled buoyancy-regulated by

filling casing at surface.

• Cost effective.

CEMENT DOWN-JET SWIRL GUIDE

SHOE

(WC-CDGS) (WC-30301)

This Shoe is used to provide turbulent flow at

the shoe and where obstructions are expected

while running in, the Down-Jet Swirl ports allow

operator to ―wash‖ casing down.

CEMENT DOWN-JET SWIRL GUIDE SHOE


2

CEMENT GUIDE SHOE

(WC-CGS) (WC-30701)

This Cement Guide Shoe may be used in

combination with any type of collar. It

efficiently guides casing past sidewall

irregularities.

CEMENT GUIDE SHOE

MODEL” WC-CDFC” CIRCULATING

DIFFERENTIAL FILL-UP COLLAR

(WC-30203)

MODEL” WC-CDFS” CIRCULATING

DIFFERENTIAL FILL-UP SHOE

(WC-30103)

MODEL” WC-DFDS”DIFFERENTIAL FILL-UP

DOWN JET SWIRL SHOE

(WC-30303)

MODEL ―WC-DFDS‖

DIFFERENTIAL FILL

UP DOWN JET SWIRL SHOE

MODEL ―WC-CDFS‖

CIRCULATING DIFFERENTIAL

FILL- UP SHOE

MODEL ―WC-CDFC‖

CIRCULATING DIFFERENTIAL

FILL-UP COLLAR


3

Differential Fill-up Float Equipment allows 90

per cent casing fill-up during run-in, reducing

surge pressures caused by the piston effect of

running casing in restricted IDs. Use of

Differential Collar with Shoe provides additional

buoyancy by allowing only 81 per cent casing

fill-up further enhancing draw works efficiency.

Circulation can be established at any time while

running in. Dropping a ball converts the

Differential Valve to a regular Back-Pressure

Valve. When Collar and Shoe are run together,

dropping one ball converts both units.

CEMENT FLOAT COLLAR WITH ANTI-

ROTATIONAL PLUG

(WC-CFC-AR) (WC-30204)

Cement/Poppet type float equipment offers

dependable performance for all classes of oil and

gas wells. The valves prevent cement back-flow

and provide casing buoyancy during run in .

Float Collar is Non-Rotational type pressure and

Cementing Plug activated. Plugs feature the

latch-down type anti-rotational feature which is

compatible with the Float Collar and eliminates

rotation during drilling.

Float Equipment is manufactured to match

customer casing specification. All Poppet type

Cement Float Collars are PDC drillable.

CEMENT FLOAT COLLAR

WITH ANTI-ROTATIONAL

PLUG (WC-CFC-AR)

MODEL “WC-DCFS” DUPLEX CEMENT

FLOAT SHOE (WC-30105)

MODEL “WC-DCFC” DUPLEX CEMENT

FLOAT COLLAR(WC-30205)

Duplex Shoes and Collars sizes 7 5/8‖ to 30‖ are

furnished with heavy duty duplex connection.

These heavy duty connections have 4‖ O.D. left

hand threads and 3¼‖ I.D. seal bores, and are

capable of carrying 100,000 lbs. with a

minimum safety factor 2. Special accessory

products are available for use with this large

Duplex Equipment. The Tubing Seal Nipple has

field proven Chevron Seals for positive sealing

of the nipple in the seal bore. It features an

expandable left hand latch mechanism, allow the

nipple to be ―stabbed‖ into the duplex

connection, and when up-strain is applied the

latch is expanded to provide full engagement in

duplex assembly. The nipple is released by

rotating to the right unscrewing the latch

mechanism of the duplex connection. Left hand

square thread subs with 4‖ O.D. left hand threads

are also available for use with Large Duplex

Equipment.

MODEL ―WC-DCFS‖ MODEL ―WC-DCFC‖

DUPLEX DUPLEX CEMENT FLOAT SHOE CEMENT FLOAT COLLAR


4

Model “WC-SIFS” Stab-In Float Shoe

(WC-30106)

Model “WC-SIFC” Stab-In Float Collar

(WC-30206)

Model “WC-SISS” Stab-In Seal Sub

(WC-30306)

Stab-In cementing is an improved method for

cementing large diameter casing. Conventional

methods require excessive amounts of cement to

ensure cement circulation to surface because of

open hole volume, losses to the formation, or

mud displacement efficiency that cannot be

determined with sufficient accuracy. In addition,

large plugs must be used to separate the cement

from the mud and have to be drilled out, along

with any cement in the casing. With stab-in

cementing, the Drill Pipe is stabbed directly into

the Float Shoe or Collar and cement is pumped

through the drill pipe until returns reach surface.

Cement is then displaced to the bottom of the

Drill Pipe — a wiper dart can be used. The drill

pipe is then picked up, circulated, and pulled out

of the hole.

USE: -

The WELLCARE Stab In Float Equipments are

used for cementing large diameter casings

lowered on drill pipe. The string presents special

cementing consideration due to high

displacement volume of large diameter casing.

Problem with high displacement are overcome

by using Stab in Cementing Equipment to allow

cementing through drill pipe.

FEATURES: -

1. Small diameter inner string off drill pipe is

used to displace cement which minimizes

displacement volume behind cement and there

by reduces contamination and save time.

2. Drill out of cement inside large casing is

minimized by controlling cement top with

displacement fluid in drill pipe and Poppet valve

in Stab in Shoe.

ADVANTAGES

• Improve displacement accuracy — cement

mixing and pumping continues until cement

returns reach surface.

• Get better cement quality — the reduced

cement/mud interface area and high velocity of

flow in the Drill Pipe minimize cement

contamination while the short pumping time

eliminates the need for cement retarders.

• Reduce cement volume — conventional

displacement requires calculation of excess

cement factor, whereas with stab-in methods

excess cement need be no greater than the

volume of the drill pipe. No large plugs are

needed.

• Reduce net rig time — circulating, pumping,

and drill-out times are minimized.

• Protect casing — cementing pressures are

confined to the drill pipe as in a squeeze job.

ORDERING EXAMPLE :

PRODUCT NO.WC-30106

SIZE : 13 /8 MODEL ―WC-SIFC‖ STAB-IN

FLOAT SHOE W/13 /8‖ OD Buttress Box for

68 Ib/ft Casing.

PRODUCT NO WC-30306.

SIZE: 4 /2‖ STAB-IN SEAL SUB w/4 /2‖ I.F.

Box up.


5

Stab-In Float Collar

Stab-In Float Shoe

Stab-In Seal Sub


6

AUTO FILL CEMENT FLOAT SHOE

MODEL: WC-CFS-A (WC-30107)

The Auto Fill Cement Float Shoe permits the

casing to fill automatically while being run into

the hole. The valve is in the open position while

running in allowing maximum filling of the

casing as it is lowered into the well bore.

This is especially effective on liner jobs and

sensitive whole conditions.

The circulation may be established at any time

during or after casing is run. The flapper type

back pressure valve does not become operative

until the drop ball is dropped or pumped down.

From this point on like Differential Fill-up Shoe,

this model Auto Fill Cement Float Shoe acts as

conventional Floating Equipment. All Auto fill

Cement Float Shoes are PDC drillable.

AUTO FILL CEMENT FLOAT SHOE

MODEL: WC-CFS-A (WC-30107)

AUTO FILL CEMENT FLOAT COLLAR

MODEL:WC-CFC-A (WC-30207)

The Auto Fill Cement Float Collar permits the

casing to fill automatically while being run into

the hole. The valve is always in the open

position allowing maximum filling of the casing

as it is lowered into the well bore.

This is especially effective on liner jobs and

sensitive hole conditions.

The circulation may be established at any time

during or after casing is run. The flapper type

back pressure valve does not become operative

until the drop ball is dropped or pumped down.

Like Differential Fill-up Equipment, the Collar

is activated by the same ball.

From this point on, like Differential Fill-up

Collar, this Auto Fill Cement Float Collar acts

as conventional Floating Equipment. All Auto

Fill Cement Float Collars are PDC drillable.

AUTO FILL CEMENT FLOAT COLLAR

MODEL : WC-CFC-A (WC-30207)


7

CEMENT BASKET

MODEL : WC-CBT (WC-31101)

The Cementing Basket is designed to run on the

casing string or liner to support a cement column

to prevent contamination of a lower zone or to

keep hydrostatic head of a column from breaking

down a weak formation.

The Basket consists of flexible steel springs that

support overlapping rubber liners. The Basket is

placed on the casing with movement limited by

pipe couplings or by welding the ring of the

basket directly to the casing. Stop rings may also

be used to selectively space the Baskets between

Collars without welding.

BUTT-WELD CEMENT FLOAT COLLAR

MODEL: WC-BCFC (WC-30208)

BUTT-WELD CEMENT FLOAT SHOE

MODEL: WC-BCFS (WC-30108)





as internal BOPs during the process of running



customer casing specification. All ball type

cement float collars are PDC drillable. Butt-

Weld Casing Collar O.D. matches with the

casing O.D. and upper end is only beveled, not

recessed for directly welding to the Casing pipe.

BUTT-WELD

CEMENT FLOAT COLLAR

MODEL: WC-BCFC

(WC-30208)

BUTT-WELD

CEMENT FLOAT SHOE

MODEL: WC-BCFS

(WC-30108)


8

SLIP-ON CEMENT FLOAT COLLAR

MODEL: WC-SCFC (WC-30209)

SLIP-ON CEMENT FLOAT SHOE

MODEL: WC-SCFS (WC-30109)





as internal BOPs during the process of running



customer casing specification. All poppet type

cement float collars are PDC drillable. Slip-ON

Casing Collar O.D. matches with the casing

O.D. and upper end is only beveled, not recessed

for directly welding to the Casing pipe.

SLIP-ON CEMENT

FLOAT COLLAR

MODEL: WC-SCFC

(WC-30209)

SLIP-ON CEMENT

FLOAT SHOE

MODEL: WC-SCFS

(WC-30109)


9

MODEL: WC-SCCZ STAGE CEMENTING

COLLAR (WC-30210)

The Model WC-SCCZ Stage Cementing Collar

is used to cement casing in two or more stages

and allows operators great flexibility in

controlling flow theology, cement chemistry,

and down hole hydrostatic pressures. Typically,

the Model ―WC-SCCZ‖ Stage Collar is used

where a single stage cement job would result in

breakdown of a weak formation causing cement

losses and or contamination of the producing

zone.

HYDRAULIC OPENING STAGE

CEMENTING COLLAR

MODEL: WC-HSCC (WC-30211)

This Stage-collar features an opening sleeve with

area differences on opposite ends that allow it to

be manipulated hydraulically. The hydraulic-

opening feature makes this tool’s use very

practical in horizontal well.

Model: WC-HSCC Model: WC-SCCZ

Hydraulic Opening Two Stage Cementing

Stage Cementing Collar Collar (WC-30210)

(WC-30211)

OPERATION

The operation of the Stage Collar requires only

the Plugs that come with the Collar and the

manipulation of casing pressure. A rubber seal-

off plate is also provided to place in the top Float

Collar only when the plug bumping surface is

flat. The nose of the Model ―WC-DFFP‖

Flexible Wiper Plug is tapered to guide it

through the stage collar and needs a beveled

surface on which to seat and seal.

The Model ―WC-SCCZ‖ Stage Collar covers

casing sizes 4½ in. through 9-5/8 in. Threads and

materials specifications vary to meet operators

casing program.

FEATURES

•Strong one-piece body construction.

•Protected closing sleeve.

•Inner sleeves locked against rotation.

•Full, smooth bore after drill out.

BENEFITS

•No internal threaded or welded pieces to leak or

fail

•Nothing to snag Packers or Running Tools run

subsequently.

•Easily drilled out-sleeves and plugs are rubber

and aluminum.

•Simple hydraulic operation.

•Shut-off sleeve cannot be accidentally

reopened.


10

THREE STAGE CEMENTING COLLAR

MODEL: WC-SCZW3 (WC-30212)

Three Stage Cementing is used to place a long

column of cement about a weak zone. The ―WC-

SCZW3‖ Stage Collar is located a short distance

about the weak zone. The First Stage is

cemented by pumping cement up to the ―WC-

SCZW3‖ Collar. The ―WC-SCZW3‖ Collar is

then opened using the Trip Plug and then the

Second and Third Stages are cemented.

Model: WC-SCZW3

Three stage Cement Collar

(WC -30212)

Model : WC-SCZW2

Two stage Cement Collar

(WC-30216)


11


12

MODEL: WC-SCCX STAGE CEMENTING

COLLAR (WC-30213)

The Model WC-SCCX Stage Cementing Collar

covers sizes larger than 9-5/8 inch.

It offers operators all of the benefits of the

Model ―WC-SCCZ‖ Stage Collar (sizes 9-5/8 in.

and smaller), and also features an outer closing

sleeve which cannot be accidentally reopened.

Non-API threads require the use of special

casing sub.

Model WC-SCCX

Stage Cementing Collar

(WC-30213)

ORDERING EXAMPLE :

PRODUCT NO. WC-30213

SIZE : 13 /8‖ MODEL WC-SCCX STAGE

CEMENTING COLLAR W/13 /8‖ OD 8 RD

STC Box x Pin f/13 /8‖ OD 68-77 lb/ft S-95

Casing, complete with TRIP PLUG, SHUT-

OFF PLUG, INDICATING TYPE PLUG


13

PLUG

Anti-Rotation Top Plug

Anti-Rotation Bottom Plug

Top Cementing Plug and Bottom Cementing

Plug have been designed to decrease drill out

time. This series of cementing plugs uses

reinforced locking teeth built into the

plugs, which lock together between the plugs

and the float equipment to eliminate rotation

of the plugs during drill out. The body of the

plugs is manufactured using a plastic core which

eliminates aluminium and large mass of rubber

found in conventional cementing plugs. No

metal parts are used and the plugs are completely

P.D.C. (polycrystalline diamond compact)

drillable.

Top Plug

Bottom Plug

Top Cementing Plug and Bottom Cementing

Plug are designed to replace conventional

cementing plug systems. By replacing the

aluminium and rubber core material in

conventional plugs with a large crushable plastic

core most of the rubber is eliminated, allowing

the drill bit to fracture the plastic rather than tear

the rubber and aluminium thus significantly

reducing drill out times. These plugs are

completely P.D.C. drillable.

Top Plug Aluminium Core

Bottom Plug Aluminium Core

Top Plug Aluminium Core and Bottom Plug

Aluminium Core are manufactured with an

aluminium insert and are rubber coated. The

plugs are available in 4 1⁄2" / 114mm to 20" /

208mm, The top plug is manufactured in black

natural rubber and the bottom plug in orange

with rupture diaphragm at 300 psi differential.

Operating range is up to 200 degrees Fahrenheit

/ 93 degrees Celsius. Plugs can be ordered in

Viton allowing for higher operating temperatures

and are operational in either synthetic or mud

fluids.

Anti-Rotation

Top Plug

Model:WC-TPAR

(WC-30501)

Anti-Rotation

Bottom Plug

Model: WC-BPAR

(WC-30601)

Top Plug

Model: WC-TP

(WC-30502)

Bottom Plug

Model: WC-BP

(WC-30602)

Top Plug Al Core

Model: WC-TP-AC

(WC-30503)

Bottom Plug Al Core

Model: WC-BP-AC

(WC-30603)


14

Latch Down Wiper Plug

Model : WC-WPLD (WC-30801)

Latch down Wiper Plug and Receiver Plate is

an effective method of providing a positive

sealing check valve in combination with a

displacement plug. The receiver plate is

designed to screw into a short 8 round threaded

casing coupling and receive the latch-in plug

after displacement has been completed. The

receiver plate features a unique check valve to

allow for trapped fluid which normally causes a

hydraulic lock to be dispersed during the latch-in

procedure. The plug and receiver plate are

manufactured from drillable materials. Receiver

plates can also be ordered for buttress threaded

casing collars. is available in casing sizes 41⁄2"

/ 114.3mm through 13 3⁄8" / 339.7mm and

tubing sizes 2 3⁄8" / 60.3mm through 41⁄2" /

114.3mm.

Latch down Wiper Plug

Model : WC-WPLD (WC-30801)

Receiver Plate

Model: WC-RPE (WC-31002)

COMBINATION CEMENTING PLUGS

Top and bottom cementing plugs are

manufactured for use in combination casing

strings where two or more different casing or

tubing strings must be wiped by the cementing

plugs during the displacement of fluids. Plugs

for sizes from 2 3⁄8" / 60.3mm through 13 3⁄8" /

339.7mm are available. Illustrations of some of

the styles of plugs are shown.

Top Flexible

Combination Plug

Model : WC-PCC-1

(WC-30802)

Top Plug

Model: WC-PCC-2

(WC-30803)

Combination Top Plug

Model: WC-PCC-3

(WC-30804)


15

SUBSEA CEMENTING PLUG SYSTEM

Top Cementing Plug

Bottom Cementing Plug

Sub-sea cementing plug system has been

designed for use where the casing is being

installed utilizing a sub-sea wellhead tie-back

system. Additional applications for this system

include use with liners or where sectional

cementing of the casing is being performed.

Operation of the sub-sea cementing plug system

is achieved by installing the top and bottom

plugs on Running Tool that is attached to the

bottom of the drill pipe string using common

running tools or the Wellcare Running Tool

that incorporates a swivel allowing the drill pipe

to be rotated above the tool while allowing the

plugs to remain stationary inside the casing.

Bottom Plug is released by dropping Launch

Ball into the drill pipe and circulating into the

bottom plug where circulation pressure causes

the bottom plug to be released. To release Top

Plug the Launching Dart is released on top of

the cement and pumped down through the drill

string until it engages and releases the top plug

from the running tool.

Wellcare offers three types of stage cementing

collars. Stage Collar is a mechanical stage

collar that relies on gravity and an opening bomb

or opening plug to open the cementing ports in

the collar. Stage Collar and 242 Packer

Cementing Collar are hydraulic stage collars that

use internal casing pressure to open cementing

ports. The use of Wellcare Stage Collars will

allow for reduced contamination of cement

where a long column of cement is being placed;

reducing the breakdown of weak formations due

to a long column of cement; allow for effective

cement placement around lost circulation zones;

and, to selectively place cement over certain

casing intervals. Plug systems for different

applications are available to allow the stage

collars to be used in a wide range of applications

where stage cementing is required. All stage

collars are designed with built in locks that lock

sleeves in the required positions during running,

cementing and after completion of the cementing

operation. All materials within drift diameters

are made from easily drillable material allowing

for quick and easy drill out of the plugs and

seats. Stage collars are available in different

casing grades, casing weights and thread

connections.

Mechanical Stage Cementing Collar And

Plug Systems Stage Collar is a proven design that is

Manufactured in sizes 4 1⁄2" / 114.3mm through

20" / 508mm. Design of the tool incorporates

two internal sleeves that are shifted down to

open and close the cementing ports. The opening

and closing seats that catch the plugs feature a

wide seating area to ensure excellent seating

with the opening bomb and closing plug. Seats

are short in length reducing drill out time.

Double locking mechanisms are used on the

closing sleeve that locks the sleeve in position

both during the closing movement and after it

has been fully closed. The closing procedure

incorporates a system for allowing trapped fluid

between the sleeves to be dissipated and permits

the closing sleeve to fully lock in the down

position.

Two Stage Three Plug Cementing

The standard two stage cementing procedure

uses conventional floating equipment, either

standard valve or filling float valves on the

bottom of the casing string. The rubber baffle

plate is installed on top of the float collar. The

stage collar is installed in the casing string at the

position where second stage cement is to be

pumped into the annulus. If a casing packer is

being used the stage collar will be located above

the packer. The operation of the stage collar is

illustrated in sequence.

1: Running In and First Stage Cementing,

Flexible First Stage Plug will pass through stage

collar while displacing first stage cement,

landing on Baffle Plate located in

Float Collar.

2: Second Stage Cement Opening Trip Bomb

has landed in and opened Stage Cementing

Collar allowing second stage cement to be

displaced.

3: Second Stage Cement complete, Second Stage

Closing / Displacement Plug landed in Stage

Collar. Application of pressure will close the

Stage Collar Ports. Two Stage Cementing job is

complete.


16

Two Stage Four Plug Cementing The two stage four plug cementing procedure is

used where a lead plug is required to be run prior

to first stage cement. Where there is no

requirement for applying pressure to the casing

after first stage cement displacement, a Type

Flexible By-pass Plug is run in front of first

stage cement. First stage cement is then run as

usual with the Flexible First Stage Plug

pumped on top of the cement. Upon completion

of displacement no pressure indication will be

obtained. Second stage cementing is performed

in the manner described under Two Stage Three

Plug Cementing. Where it is required to obtain a

pressure indication upon displacement of first

stage cement as may be the case when a casing

packer is being run a Landing Collar should be

run above the float collar. The landing collar will

allow Type Flexible By-Pass plug to be

pumped through the landing collar to the float

collar. On

Landing the plug in the float collar the cement is

Displaced, by-passing the flexible plug.

Flexible Shut-Off Plug is used instead of Plug

to displace first stage cement. This plug will land

in the landing collar allowing for an indication

that the plug has been displaced. Pressure inside

the casing can now be increased to inflate a

casing packer and test the casing.

Landing Collar

Model : WC-LDC

(WC-31501)

Model : WC-ZSTP

Stage Collar Trip

Plug (WC-30904)

Model :WC-ZWFP

Flexible By-Pass

Plug (WC-30902)

Model :WC-DFFP

Flexible Follow Plug

(WC-30903)

Model : WC-ZSCP

Stage Collar Closing

Plug (WC-30901)


17

Two Stage Four Plug Cementing

Wellcare

Casing

Centralizer

Wellcare

Model :

WC-SCCZ

Stage

Cementing

Collar

Wellcare

Metal

Petal

Basket

Wellcare

Landing

Collar

Model:

WC-LDC

Wellcare

Model :ZWFP

By-Pass

Plug

Wellcare

Cement

Wash-Down

Whirl Float

Shoe

Displacing First-Stage

Cement

Wellcare

Model :

WC-ZSCP

Stage Collar

Opening Trip

Plug

Wellcare

Model :

WC-DFFP

Flexible

Follow Plug

First-Stage Cement

Displaced and Trip

Plug Dropping

Displacing Second-Stage

Cement and Pumping

Down Closing Plug

Stage Collar

Closed

Wellcare

Model :

WC-ZSCP

Stage Collar

Closing Plug


18

Continuous Two Stage Cementing

Continuous two stage cementing is employed

where there is a requirement to begin circulation

of the second stage immediately after first stage

cement has been displaced or where inclination

of the stage collar is such that the standard

opening bomb will not properly gravitate to the

opening seat in the stage collar. The latter

situation is often encountered in horizontal and

highly deviated wells for two stage cementing.

The procedure for performing continuous stage

cementing requires a Flexible By-Pass Plug

used in front of the First stage cement. First

stage cement is then pumped into the casing

followed by Flexible First Stage Plug.

Displacement fluid required to fill the casing

between the float collar and the stage collar is

then pumped, Continuous Opening Plug is

released and displacement is continued. Plugs

are then displaced with opening plug arriving

at the stage collar just before 2 Opening Plug

lands in the float collar. Application of pressure

will open the stage collar and circulation of the

second stage can be performed. Pumping of

second stage cement and closing of the stage

collar is accomplished using Closing Plug.

Model : WC-ZSCP

Stage Collar Closing Nipple

Model : WC-ZSCP

Stage Collar Trip Plug

Model :WC-ZWFP

Flexible Indicating

Seal-OFF Plug


19

Wellcare

Casing

Centralizer

Model :

WC-SCCZ

Stage

Cementing

Collar

Wellcare

Metal

petal

Basket

Wellcare

Rubber

Seal-Off

Plate

Wellcare

Cement

Float

Collar

Wellcare

Cement

Wash-Down

Whirler Float

Shoe

Conditioning Well

Model :

WC-ZSCP

Stage Collar

Trip Plug

Model :

WC-DFFP

Flexible

Indicating

Seal-OFF

Plug

First –Stage

Cement Displaced and

Trip-Plug Dropping

Displacing

Second-Stage Cement and

Pumping Down Stage

Collar Closing Plug

Stage Collar

Closed

Model :

WC-ZSCP

Stage Collar

Closing Plug


20

Three Stage Cementing

Three stage cementing can be performed using

Stage Collars. The installation of Reduction

valve seats in the lower stage collar and a set of

Three Stage Cementing Plugs permits three stage

cementing to be performed. The Plug set comes

with a special first stage plug, opening bomb and

closing plug that are designed to be pumped

through the upper stage collar and work

effectively in operating the lower stage

cementing collar. Plug set is also supplied with

reduction valve seats required to convert a

standard Stage Collar for use with the plugs.

Three Stage Cementing


21

Tapered and Offset Tapered Noses

MODEL: WC-NST (WC-31201)

MODEL: WC-NSOT (WC-31202) Tapered and offset tapered noses help casing

pass severe ledges, obstructions, high angles,

and previous sidetracks. These noses also help

protect the float valves from being damaged

from debris while running in the hole.

Tapered Offset Nose

Features

• Enables a one trip to bottom target depth casing

run

• With the high-port up-jet (HPUJ) or down-jet

nose, cement bonding can be improved to jet

wellbore clean, and to aid in circulating past

tight spots.

• Available on all Super Seal II® equipment

• Available in aluminium (non-PDC drillable)

and composite material (PDC drillable

• Available in standard design, HPUJ, and down-

jet configurations

• ―Enclosed‖ down-jet option is available with

moulded plastic nose, which passes 60% of flow

through the nose and 40% through the down-jet

ports.

Tapered Offset Nose for Better Travel in Deviated hole Section


22

STAGE COLLAR

(Mechanical and Hydraulic)

MODEL : WC-SCMH (WC-31301)

Features 1. The circulation ports can be hydraulically

opened, eliminating the need to use a free-

fall opening plug Therefore, it is not

restricted to well inclination.

2. Internal closing structure and anti-rotation

mechanism protect the closing sleeve from

damage while drilling out the opening and

closing seats.

3. All internal parts are made of easily

drillable material.

4. Opening pressure adjustable upon

customer request.

Hydraulic and Mechanical Stage Collar

MODEL : WC-SCMH (WC-31301)


23

Specifications

Casing Size Casing Weight Max O.D. Drill-out I.D. Overall Length

in. kg/m l b/ft mm in. mm in. mm in.

5 /2

25,30 17.00

172 6.772

124 4.882

780 30.709 29.76 20.00 121 4.764

34.23 23.00 119 4.685

7

38 69 26.00

210 8.268

159 6 260

930 36.614 43.16 29.00 157 6.181

47.62 32.00 155 6.102

7-5/8

44.20 29.70

230 9.055

175 6.890

1120 44.094 50.15 33.70 172 6.772

58 04 39.00 168 6.614

9-5/8

59.53 40.00

282.5 11.122

224 8.819

1170 46 063 64.74 43.50 222 8.740

69.94 47.00 221 8 701

10 /4

75.90 51.00

302 11.890

250 9.843

1210 47.992 82.59 55.50 248 9.764

90.33 60.70 245 9.646


24

Baffle Collar MODEL: WC-BCR (WC-31401)

Baffle Collar is an effective method for landing

cementing plugs at specific points in

the casing string. Useful in situations such as

liner cementing and where no float collar or float

shoe is being run. Cement filled collar that is

easily drillable

Baffle Plate MODEL: WC-BPE (WC-31001)

Baffle Plate is used for landing cementing plugs

and is designed to be installed in the centre of a

casing coupling. These units are available in

both aluminium and plastic materials, and come

in threaded and flush outside diameter

configurations. Baffle Plates are available in

sizes 4 1⁄2" / 114.3mm through 13 3⁄8" /

339.7mm.

Thread Lock Compound (WC-31402)

Thread Lock Compound is a thread compound

formulated for locking of casing threads. This

compound is used for locking float equipment

and casing joints on the bottom of the casing to

prevent unscrewing of the threads during drill-

out operations. The two part compound provides

superior strength and works in adverse

temperature conditions.

API Modified Pipe Compound

(WC-31403) API modified pipe compound is a thread

lubricant, protecting and sealant that is

manufactured according to the specifications of

API Bulletin 5A2. The compound contains rust

and oxidation inhibitors and is formulated to

ensure brush ability over a wide temperature

range. The pipe compound will seal and

withstand pressures up to 10,000 PSI / 69 Mpa

and will not harden and dry. Available in 9 and

15 kilogram pails.


25

WELLCARE Centralizer Software Program

Cementing products installation design should be based on individual well conditions

and operating objectives. WELLCARE Centralizer Software program provides

optimum deployment (minimum strategic deployment for maximum output) of

cementation products in the well.

The Program works with actual well data, including well profiles and pipe data to

calculate down hole forces. It then analyses actual

WELLCARE Centralizer performance data to

determine where to place specific equipment so that

a minimum stando ff is maintained throughout the

string.

The Program is sophisticated enough to devise a

complete equipment installation design by taking

pay zone area or other specialized areas into

account. While WELLCARE Centralizers give perfect

bore performance, the Centralizer Software Program

confirms it before application.


26

Types Of

CENTRALIZERS

Non Weld

Centralizer

Casted

Centralizer

Welded

Centralizer

N/W Bow Spring

Centralizer

N/W Semi Rigid

Bow Spring

entralizer

N/W Positive

Bow Centralizer

Hinge Welded

Centr.

Slip On

welded Centr.

H/W Bow

Spring Centr.

Aluminum

Centr. &

Spirlr.

Steel Centr.

& Spirlr.

Zinc Centr.

& Spirlr.

H/W Semi

Rigid Bow

Spring Cet.

H/W Positive

Bow centr.

S/O Bow

Spring

Centralizer

S/O Semi Rigid

Bow Spring

Centr.

S/O Positive

Bow

Centralizer

S/O Heavy

Duty

Spiralizer

S/O welded

Spiralizer


27

PERFORMANCE OF BOW SPRING

CENTRALIZER

Starting Force

Maximum force required to insert a

centralizer into a specified wellbore

diameter.

1. A fully assembled centralizer is

installed over four equally spaced lugs

(3 on the inner pipe-1) as shown in Fig-1.

2. The test assembly is held within 5

degrees of the vertical with the centralizer

resting on the edge of the outer pipe-2

3. Load is applied on the inner pipe to pull

the centralizer into the outer pipe-2.

4. Starting force equals the maximum

force required to put centralizer inside

the outer pipe-2.

5. The starting force should be less than

the weight of 40ft. (12.2mtrs.) of

medium weight casing.

Running Force

Maximum force required to move a

centralizer through a specified wellbore

diameter.

The running force represent the

maximum force required to slide the

inner pipe inside the outer pipe once the

force reading has become steady after

compensating for the weight of the inner

pipe end attachment.

The running force test may be perform

with the starting force test or carried out

separately.

Readings of force used form the time the

centralizer is inside the outer pipe until

the inner pipe is completely in place

being recorded and the maximum force

reported as the running force after compensation.


28

Restoring Force Test

Restoring force is the force exerted by a

centralizer against the casing to keep it

away from the bore wall.

1. The test is performed with pipe-1 and

pipe-2 (Fig. 2) within 5 degrees of the

horizontal.

2. External force is applied to the outer

pipe-2 which is transferred to the

centralizer.

3. Load is then applied and load v/s

deflection readings are recorded for 3

times when the minimum restoring force

has been obtained.

4. Each b o w spring is tested and the

final load deflection curve is prepared

using the arithmetic average of the

force readings at corresponding

deflections.

5. Restoring force is determined from this

curve at 67% stand-off ratio.

Field experience shows that stand-off

values of 75-90% are adequate even in

horizontal wells.


29

Hinged Non Weld Bow s p r i n g

Centralizers MODEL : WC-HNBSC (WC-40301) Hinged Weld Bow s p r i n g

Centralizers MODEL : WC-HWBSC (WC-40302) Slip ON Weld Bow s p r i n g

Centralizers MODEL : WC-SWBSC (WC-40303)

WELLCARE non weld bow centralizers

are high quality, developed to exceed

API 10 D specifications for use in the

most demanding conditions.

The non weld bow centralizers

combine the highest non weld

centralizer restoring force with the

lowest starting force.

Premium quality bows made of

special alloy steel with uniform

hardness provide optimum

performance. The bows with

extended profile prevent them from

hitting against casing collars. The bows

are available in a range to

accommodate any well profile.

Quality steel and non weld design

ensure extra strong grip while integral

hinges folded on the inside are

connected by high strength locking pin

for maximum structural robustness.

WELLCARE non weld bow

centralizers are used to position the

casing in the centre of the wellbore in

vertically deviated as well as horizontal

wells.

The non weld bow centralizers reduce

the effect of channeling by improving

cement flow. This results in a more

uniform thickness between the casing

and the wellbore. By reducing the

pipe movement before the cement sets

in, the centralizers are able

to minimize gas channeling.

The centralizers provide a semi

rigid casing standoff.

Non weld design features self locking

of lips for holding bows to end collars.

Bows of special alloy steel are hot

formed and tempered for optimum

strength, resilience and uniformity.

They are then flattened as per

specifications for consistent

performance.

High restoring force combined with

low starting force is achieved with all 5

bow heights. Their installation on the

casing pipe is very convenient. It

requires only the placement of the two

assembled halves on the pipe and

inserting the pin in the end collar hinge.

The centralizer when unassembled

makes a compact package, greatly

reducing shipping cost. Assembly at

site is conveniently done,


30


31

Table “A” - HINGED NON-WELD BOW SPRING CENTRALIZERS [WC-HNBSC]

Sl.No Casing Size Hole Size No.of Bow MAX. OD MAX. Comp. OD

1 4-1/2"

6" 4 7.165” 5.409”

6-1/4" 4 7.165” 5.409”

6-1/2" 4 7.638” 5.409”

7-7/8" 4 9.055” 5.409”

2 5"

6-1/2" 4 7.677” 5.921”

6-3/4" 4 7.677” 5.921”

7-7/8" 4 9.094” 5.921”

8-1/2" 4 10.118” 5.921”

3 5-1/2"

7-7/8" 4 9.134” 6.433”

8-1/2" 4 10.079” 6.433”

8-3/4" 4 10.079” 6.433”

9-7/8" 4 11.102” 6.433”

4 6-5/8" 8-1/2" 4 9.331” 7.575”

5 7"

8-1/2" 4 9.724” 7.969”

8-3/4" 4 10.197” 7.969”

9-7/8" 4 11.614” 7.969”

6 7-5/8" 9-7/8" 4 10.846” 8.598”

7 8-5/8"

10-5/8" 6 11.831” 9.583”

11-5/8" 6 13.799” 9.583”

12-1/4" 6 14.272” 9.583”

8 9-5/8"

11-5/8" 6 13.819” 10.626”

12-1/4" 6 14.291” 10.626”

13-3/4" 6 15.315” 10.626”

9 9-7/8"

11-5/8" 6 13.602” 10.882”

12-1/4" 6 14.075” 10.882”

13-3/4" 6 15.098” 10.882”

10 10-3/4"

12-1/4" 6 13.583” 11.807”

13-3/4" 6 15.472” 11.807”

14-3/4" 6 16.024” 11.807”

11 11-3/4"

13-3/4" 8 15.492” 12.772”

14-3/4" 8 16.437” 12.772”

15-1/2" 8 17.461” 12.772”

12 13-3/8" 16" 8 18.642” 14.425”

17-1/2" 8 19.114” 14.425”

13 13-5/8" 16" 8 18.366” 14.681”

17-1/2" 8 18.917” 14.681”

14 14" 16" 8 18.740” 15.055”

17-1/2" 8 19.291” 15.055”

15 16" 20" 10 21.791” 17.083”

22" 10 24.075” 17.083”

16 18-5/8" 22" 10 23.425” 19.740”

24" 10 26.732” 19.740”

17 20" 24" 10 25.827” 21.118”

26" 10 28.110” 21.118”


32

Table “B” – WELD BOW SPRING CENTRALIZERS [WC-HWBSC/WC-SWBSC]

Sl.No. Casing Size Hole Size No.of Bow O.D MAX. COMP.OD

1 4-1/2"

6" 4 7-1/8" 5.25”

6-1/4" 4 7-1/8" 5.25”

6-1/2" 4 7-5/8" 5.25”

7-7/8" 4 9-1/8" 5.25”

2 5"

6-1/2" 4 7-5/8" 5.76”

6-3/4" 4 7-7/8" 5.76”

7-7/8" 4 9-1/8" 5.76”

8-1/2" 4 10-1/8" 5.76”

3 5-1/2"

7-7/8" 4 9-1/8" 6.28”

8-1/2" 4 10-1/4" 6.28”

8-3/4" 4 10-1/4" 6.28”

9-7/8" 4 11-1/4" 6.28”

4 6-5/8" 8-1/2" 4 9-5/8" 7.42”

5 7"

8-1/2" 4 9-5/8" 7.81”

8-3/4" 4 10-1/8" 7.81”

9-7/8" 4 11-5/8" 7.81”

6 7-5/8" 9-7/8" 4 10-3/4" 8.44”

7 8-5/8"

10-5/8" 6 11-3/4" 9.43”

11-5/8" 6 13-7/8" 9.43”

12-1/4" 6 14-1/4" 9.43”

8 9-5/8"

11-5/8" 6 13-7/8" 10.47”

12-1/4" 6 14-1/4" 10.47”

13-3/4" 6 15-3/4" 10.47”

9 9-7/8"

11-5/8" 6 13-5/8" 10.72”

12-1/4" 6 14-1/4" 10.72”

13-3/4" 6 15-1/4" 10.72”

10 10-3/4"

12-1/4" 6 13-3/8" 11.65”

13-3/4" 6 15-5/8" 11.65”

14-3/4" 6 16-1/8" 11.65”

11 11-3/4"

13-3/4" 8 15-3/8" 12.61”

14-3/4" 8 16-3/8" 12.61”

15-1/2" 8 17-3/8" 12.61”

12 13-3/8" 16" 8 18-5/8" 14.27”

17-1/2" 8 19-1/8" 14.27”

13 13-5/8" 16" 8 18-5/8" 14.52”

17-1/2" 8 19-1/8" 14.52”

14 14" 16" 8 18-5/8" 14.90”

17-1/2" 8 19-1/8" 14.90”

15 16" 20" 10 21-5/8" 16.93”

22" 10 24-1/8" 16.93”

16 18-5/8" 22" 10 23-1/4" 19.58”

24" 10 26-3/4" 19.58”

17 20" 24" 10 25-5/8" 20.96”

26" 10 21-1/8" 20.96”


33

HINGED SEMI- RIGID NON-WELD

BOW SPRING CENRALIZER

MODEL : WC-HNSRC (WC-40401)

HINGED SEMI- RIGID WELD BOW

SPRING CENRALIZER

MODEL : WC-HWSRC (WC-40402)

SLIP ON SEMI RIGID NON WELD

BOW SPRING CENRALIZER

MODEL : WC-SWSRC (WC-40403)

Available in the size range 4 ½ ‖ to

20‖, this device ensures high efficiency

in casing jobs on deviated and

horizontal wells. Combining the

features of a standard spring bow

and rigid centralizer, it has bows

manufactured from alloy steel

tempered for exact hardness and a

non- weld design to eliminate brittle

spots. The spring characteristics of its

double crested profile permit

compression to facilitate movement

through tight spot.

dog legs. Compared to other Spring Bow Centralizers this device attains higher stand-off because of its higher restoring force.


34

Table “C” - SEMI RIGID BOW SPRING CENTRALIZERS [WC-HNSRC/WC-HWSRC/WC-SWSRC]

Sl.No. Casing Size Hole Size No.of Bow Max. O.D Max. Comp.O.D

1 4-1/2"

6" 4 6-1/8" 5.41”

6-1/4" 4 6-3/8" 5.41”

6-1/2" 4 6-5/8" 5.41”

7-7/8" 4 8" 5.41”

2 5"

6-1/2" 4 6-5/8" 5.92”

6-3/4" 4 6-7/8" 5.92”

7-7/8" 4 8" 5.92”

8-1/2" 4 8-5/8" 5.92”

3 5-1/2"

7-7/8" 4 8" 6.43”

8-1/2" 4 8-5/8" 6.43”

8-3/4" 4 8-7/8" 6.43”

9-7/8" 4 10" 6.43”

4 6-5/8" 8-1/2" 4 8-5/8" 7.57”

5 7"

8-1/2" 4 8-5/8" 7.97”

8-3/4" 4 8-7/8" 7.97”

9-7/8" 4 10" 7.97”

6 7-5/8" 9-7/8" 4 10" 8.60”

7 8-5/8"

10-5/8" 6 10-3/4" 9.58”

11-5/8" 6 11-3/4" 9.58”

12-1/4" 6 12-3/8" 9.58”

8 9-5/8"

11-5/8" 6 11-3/4" 10.63”

12-1/4" 6 12-3/8" 10.63”

13-3/4" 6 14" 10.63”

9 9-7/8"

11-5/8" 6 12" 10.88”

12-1/4" 6 12-3/4" 10.88”

13-3/4" 6 14-1/4" 10.88”

10 10-3/4"

12-1/4" 6 12-3/4" 11.81”

13-3/4" 6 14-1/4" 11.81”

14-3/4" 6 15-1/4" 11.81”

11 11-3/4"

13-3/4" 8 14-1/4" 12.77”

14-3/4" 8 15-1/4" 12.77”

15-1/2" 8 16" 12.77”

12 13-3/8" 16" 8 16-1/2" 14.43”

17-1/2" 8 18" 14.43”

13 13-5/8" 16" 8 16-1/2" 14.68”

17-1/2" 8 18" 14.68”

14 14" 16" 8 16-1/2" 15.06”

17-1/2" 8 18" 15.06”

15 16" 20" 10 20-1/2" 17.08”

22" 10 22-1/2" 17.08”

16 18-5/8" 22" 10 22-1/2" 19.74”

24" 10 24-1/2" 19.74”

17 20" 24" 10 24-1/2" 21.12”

26" 10 26-1/2" 21.12”


35

HINGED NON WELD POSITIVE BOW

CENTRALIZER

MODEL: WC-HNPBC (WC-40201)

HINGED WELD POSITIVE BOW

CENTRALIZER

MODEL: WC-HWPBC (WC-40202)

SLIP-ON WELD POSITIVE BOW

CENTRALIZER

MODEL: WC-SWPBC (WC-40203)

WELLCARE non weld positive

centralizers are uniquely designed with

flat bottom U profile of different depths.

The flat U profile is fitted in self locking

retaining lips for firm and positive hold.

The centralizers significantly reduce

frictional drag while being used in

deviated holes. They provide almost 100%

standoff when run inside a cased

hole. They are supplied 1/4‖/6mm less

than the inside diameter of the casing or

hole size in which the centralizer is to be

run.

The non weld design eliminates brittle

spots, enhancing durability. WELLCARE

non weld positive centralizers are

available in a size range of 4 ½ ‖ to 20‖.

Available in the size range 4 ½ ‖ to 20‖,

these centralizers are uniquely designed

with flat bottom U profile of different

depths permitting maximum fluid

passage.

Available with straight bows for

c a s i n g operations, this device provides

nearly 100% stand-off (Concentricity)

when run inside a case hole. The

self locking design ensures firm hold. Its

non-welded structure, eliminates brittle

spots and enhances durability.


36

Table “D”-POSITIVE BOW CENTRALIZERS [WC-HNPBC/HWPBC/SWPBC]

Sl. No. CASING SIZE HOLE SIZE No. Of Bows CENTRALIZER OD

1 4-1/2" 6-1/8" 4 5.787”

8-1/2" 4 8.071”

2 5" 8-1/2" 4 8.268”

5-7/8" 4 5.512”

3 5-1/2" 8-1/2" 4 8.228”

9-5/8" 4 9.094”

4 6-5/8" 8-1/2" 4 8.228”

9-5/8" 4 9.370”

5 7" 8-1/2" 4 8.189”

9-5/8" 4 9.213”

6 7-5/8" 9-5/8" 4 9.291”

8-1/2" 4 8.150”

7 8-5/8" 9-5/8" 4 9.252”

12-1/4" 4 12.008”

8 9-5/8" 12-1/4" 6 11.870”

13-3/8" 6 13.012”

9 9-7/8" 12-1/4" 6 11.909”

13-3/8" 6 12.736”

10 10-3/4" 12-1/4" 8 12.008”

13-3/8" 8 13.031”

11 11-3/4"

12-1/4" 8 11.890”

13-3/8" 8 13.012”

13-1/2" 8 12.028”

12 13-3/8" 16" 8 15.669”

17-1/2" 8 17.126”

13 13-5/8" 16" 8 15.689”

17-1/2" 8 17.067”

14 14" 16" 8 15.768”

17-1/2" 8 16.909”

15 16" 18-1/2" 8 18.327”

20" 8 19.783”

16 18-5/8"

22" 10 21.585”

24" 10 4.646”

26" 10 21.585”

17 20"

22" 10 20.364”

24" 10 23.514”

26" 10 25.719”


37

HI TURBOLIZER

HINGED NON WELD BOW

SPRING TURBOLIZER

MODEL : WC-HNBST (WC-40501)

HINGED WELD BOW SPRING

TURBOLIZER

MODEL : WC-HWBST (WC-40502) SLIP ON WELD BOW SPRING

TURBOLIZER

MODEL : WC-SWBST (WC-40503)

Available in the size range 4

1/2 ‖ to 20‖, this sturdy non-weld device induces a spiral flow pattern in the slurry thereby increasing displacement efficiency. Fitted with s p e c i a l l y designed multi-direction turbo fins made of alloy steel in annealed state this device improves the cleaning action of drilling fluids, distributes the cement slurry into wellbore irregularities and minimizes channeling.

For Specification refer to Table ―A‖ & ―B‖


38

HEAVY DUTY WELD

SPIRALIZER -L

MODEL : WC-HVS-L (WC-40701)

HEAVY DUTY WELD

SPIRALIZER -R

MODEL : WC-HVS-R (WC-40702)

HEAVY DUTY WELD

CENTRALIZER

MODEL : WC-HVC (WC-40703)

WELLCARE Heavy Duty Weld

Centralizers are high quality w e l d e d

product which m e e t or exceed API

10D specifications. The centralizers

h a v e bow springs strongly welded to

the end collars under r eq u i r ed

temperature conditions with correct

grade electrode.

Integral hinges folded on the inside

stay intact even under extreme stress.

The end collars are available in latch-on

design with high strength steel locking

p i n for maximum structural toughness.

With a choice of six different bow

heights the r i g h t c o m b i n a t i o n for

casing open hole c o n figuration c a n be

achieved.

WELLCARE Spiralizer, is designed specifically for h i g h l y d e v i a t e d o r horizontal wells. The steel construction

ensures extra strength and superior

toughness The design of the blades

provide minimum friction reducing drag

forces while running in the pipe. The

Spiralizers are available in spiral and

straight blades which resist high side

loads. While giving maximum standoff

the blades create vortex flow to optimize

mud displacement. The centralizers are

available in 4½ ‖ to 13 3/8‖.

For Specification refer to Table ―E‖

SLIP-ON WELD SPIRALIZER-L


39

SLIP-ON WELD SPIRALIZER-L

Model : WC-SWS-L (WC-40801)

SLIP-ON WELD SPIRALIZER-R

Model : WC-SWS-R (WC-40802)

SLIP-ON WELD CENTRALIZER

Model : WC-SWC (WC-40803)

WELLCARE Slip –ON Weld Spiralizer are

high quality w e l d e d product which

m e e t or exceed API 10D

specifications. The centralizers h a v e

bow springs strongly welded to the end

collars under r eq u i r ed temperature

conditions with correct grade electrode.

Integral hinges folded on the inside

stay intact even under extreme stress.

The end collars are available in latch-on

design with high strength steel locking

pin for maximum structural toughness.

With a choice of six different bow

heights the right combination for casing

open hole c o n figuration c a n be

achieved.

WELLCARE Slip-on Weld Centralizer, is

designed specifically for h i g h l y d e v i a t

e d o r horizontal wells. The steel

construction ensures extra strength and

superior toughness The design of the

blades provide minimum friction reducing

drag forces while running in the pipe. The

Spiralizers are available in spiral and

straight blades which resist high side

loads. While giving maximum standoff

the blades create vortex flow to optimize

mud displacement. The centralizers are

available in 4½ ‖ to 13 3/8‖.


40

Table “E” - SLIP ON WELDED BOW SPRING CENTRALIZERS

Sl.No. Casing Size Hole Size No.of Bow O.D MAX. COMP. OD

1 4-1/2"

6" 4 7-1/8" 5.41

6-1/4" 4 7-1/8" 5.41

6-1/2" 4 7-5/8" 5.41

7-7/8" 4 9-1/8" 5.41

2 5"

6-1/2" 4 7-5/8" 5.92

6-3/4" 4 7-7/8" 5.92

7-7/8" 4 9-1/8" 5.92

8-1/2" 4 10-1/8" 5.92

3 5-1/2"

7-7/8" 4 9-1/8" 6.43

8-1/2" 4 10-1/4" 6.43

8-3/4" 4 10-1/4" 6.43

9-7/8" 4 11-1/4" 6.43

4 6-5/8" 8-1/2" 4 9-5/8" 7.57

5 7"

8-1/2" 4 9-5/8" 7.97

8-3/4" 4 10-1/8" 7.97

9-7/8" 4 11-5/8" 7.97

6 7-5/8" 9-7/8" 4 10-3/4" 8.60

7 8-5/8"

10-5/8" 6 11-3/4" 9.58

11-5/8" 6 13-7/8" 9.58

12-1/4" 6 14-1/4" 9.58

8 9-5/8"

11-5/8" 6 13-7/8" 10.63

12-1/4" 6 14-1/4" 10.63

13-3/4" 6 15-3/4" 10.63

9 9-7/8"

11-5/8" 6 13-5/8" 10.88

12-1/4" 6 14-1/4" 10.88

13-3/4" 6 15-1/4" 10.88

10 10-3/4"

12-1/4" 6 13-3/8" 11.81

13-3/4" 6 15-5/8" 11.81

14-3/4" 6 16-1/8" 11.81

11 11-3/4"

13-3/4" 8 15-3/8" 12.77

14-3/4" 8 16-3/8" 12.77

15-1/2" 8 17-3/8" 12.77

12 13-3/8" 16" 8 18-5/8" 14.43

17-1/2" 8 19-1/8" 14.43

13 13-5/8" 16" 8 18-5/8" 14.68

17-1/2" 8 19-1/8" 14.68

14 14" 16" 8 18-5/8" 15.06

17-1/2" 8 19-1/8" 15.06

15 16" 20" 10 21-5/8" 17.08

22" 10 24-1/8" 17.08

16 18-5/8" 22" 10 23-1/4" 19.74

24" 10 26-3/4" 19.74

17 20" 24" 10 25-5/8" 21.12

26" 10 21-1/8" 21.12


41

CASTED STEEL SPIRALIZER-L

Model: WC-CSP-SL (WC-40104)

CASTED STEEL SPIRALIZER-R

Model: WC-CSP-SR (WC-40108)

CASTED STEEL CENTRALIZER

Model: WC-CST-S (WC-40103)

CASTED ALUMINIUM SPIRALIZER-L

Model: WC-CSP-AL (WC-40102)

CASTED ALUMINIUM SPIRALIZER-R

Model: WC-CSP-AR (WC-40107)

CASTED ALUMINIUM CENTRALIZER

Model: WC-CSTS-A (WC-40101)

CASTED ZINC SPIRALIZER-L

Model: WC-CSP-ZL (WC-40106)

CASTED ZINC SPIRALIZER-R

Model: WC-CSP-ZR (WC-40109)

CASTED ZINC CENTRALIZER

Model: WC-CST-Z (WC-40105)

WELLCARE manufactures straight and

spiral blade solid centralizers. The solid

centralizers are made of one piece high

grade corrosion resistant aluminum cast

and non sparking metal-zinc alloy. They

are high impact and shock resistant,

possess high tensile and yield strengths

and are wellhead friendly.

WELLCARE straight blade solid

centralizers provide maximum

casing/wellbore standoff, the

prime requisite of an excellent primary

cement job. This is irrespective of lateral

loads. The straight blades are self

cleaning in nature and designed to

enhance flow.

Straight blade solid centralizers can

endure steep temperatures in the

wellbore. Friction factor is minimal,

with reduced drag and torque, ensuring

maximum fluid passage.

WELLCARE spiral blade solid

centralizers provide the utmost wall

contact and fluid swirl. They give

optimum flow area in highly deviated and

horizontal wells. The casing effectively

reaches TD due to the sloping rare ends

reducing drag. The slope also ensures

that no balling between the vanes

takes place, as scraping, gouging or

digging into the formation is eliminated.

Spiral Blade Solid Centralizers

WELLCARE Spiral Blade Solid

Centralizers were developed in

response to the need for better

cementing in highly deviated and

horizontal wells. WELLCARE Spiral

Blade Solid Centralizers are designed to

provide optimum flow area. The 360

degrees over lapping solid vane

provide maximum wall contact

and fluid swirl. Reduced flow area

between the spiral blades produces a

vortex motion of the fluids for more fluid

velocity with direction. WELLCARE

Spiral blade Solid centralizer is made of

high strength corrosion resistant cast

aluminum and also non-sparking zinc

alloy. The 300

slope of the vane end

reduce drag and aids the casing in

reaching TD. This gentle flow from the

body to the height of the vane will

eliminate scraping, gouging or digging

into the formation and consequently

reduce balling between the vanes.

WELLCARE Spiral Blade Solid

Centralizer has high impact and shock

resistance combined with tensile and

yield strength as well as resists corrosion.


42


43

Straight Blade Solid Centralizer


centralizers provide the right features for

getting a good primary cementing job

with maximum casing/ wellbore standoff.


centralizers are constructed of one piece

high strength corrosion resistant

cast aluminum and also non- sparking

zinc alloy. WELLCARE straight blade

solid centralizers provide ultimate drag

and torque reduction with maximum

fluid bypass. With low friction

factor WELLCARE straight blade solid

centralizers withstand high wellbore

temperatures while providing maxi.

horizontal standoff.

WELLCARE centralizers are wellhead

friendly and have high impact with

shock resistance, along with optimum

tensile and yield strength.


44

Table “F”- SOLID CASTED SPIRALIZER/CENTRALIZER

Sl.No. Casing Size Hole Size No.of Bow I.D O.D

1 2-7/8” 4-1/8” 4 2.969 3-49/64”

6,6-1/8” 4 2.969 5-41/64”

2 3-1/2” 6-1/8” 4 3.594 5-41/64”

3 4” 6-1/8” 4 4-3/32” 5-41/64”

4 4-1/2"

6" 4 4.606 5-3/4"

6-1/4" 4 4.606 6"

6-1/2" 4 4.606 6-1/4"

7-7/8" 4 4.606 7-5/8"

5 5"

6-1/2" 4 5.118 6-1/4"

6-3/4" 4 5.118 6-1/2"

7-7/8" 4 5.118 7-5/8"

8-1/2" 4 5.118 8-1/4"

6 5-1/2"

6-3/4" 4 5.630 6-1/2"

7-7/8" 4 5.630 7-5/8"

8-1/2" 4 5.630 8-1/4"

8-3/4" 4 5.630 8-1/2"

7 6-5/8" 8-1/2" 5 6.772 8-1/4"

8 7"

8-1/2" 5 7.165 8-1/4"

8-3/4" 5 7.165 8-1/2"

9-7/8" 5 7.165 9-5/8"

9 7-5/8" 9-7/8" 5 7.795 9-5/8"

10 8-5/8"

10-5/8" 6 8.780 10-3/8"

11-5/8" 6 8.780 11-3/8"

12-1/4" 6 8.780 12"

11 9-5/8"

11-5/8" 6 9.823 11-3/8"

12-1/4" 6 9.823 12"

13-3/4" 6 9.823 13-1/2"

12 9-7/8"

11-5/8" 6 10.079 11-3/8"

12-1/4" 6 10.079 12"

13-3/4" 6 10.079 13-1/2"

13 10-3/4"

12-1/4" 6 11.004 12"

13-3/4" 6 11.004 13-1/2"

14-3/4" 6 11.004 14-1/2"

14 11-3/4"

13-3/4" 7 11.969 13-1/2"

14-3/4" 7 11.969 14-1/2"

15-1/2" 7 11.969 15-1/4"

15 13-3/8" 16" 8 13.622 15-3/4"

17-1/2" 8 13.622 17-1/4"

16 13-5/8" 16" 8 13.878 15-3/4"

17-1/2" 8 13.878 17-1/4"

17 14" 16" 8 14.252 15-3/4"

17-1/2" 8 14.252 17-1/4"

18 16" 20" 10 16.280 19-3/4"

22" 10 16.280 21-3/4"

19 18-5/8" 22" 10 18.937 21-3/4"

24" 10 18.937 23-3/4"

20 20" 24" 10 20.315 23-3/4"

26" 10 20.315 25-3/4"


45

CONDUCTOR PIPE CENTRALIZER

Model: WC-CRPC (WC-40601)

Conductor Pipe Centralizer are being used in

Oil Well Rig are available with us for

different hole size varying from 20‖to 30‖

for respective casing sizes.

WELLCARE Conductor pipe centralizers

provide the right features for getting a

good primary cementing job with

maximum casing/ wellbore standoff.

WELLCARE Conductor pipe

centralizers are constructed of one piece

high strength corrosion resistant.

WELLCARE Conductor Pipe centralizers

provide ultimate drag and torque

reduction with maximum fluid bypass.

With low friction factor WELLCARE

Conductor pipe centralizers withstand

high wellbore temperatures while

providing maxi. horizontal standoff.

WELLCARE centralizers are wellhead

friendly and have high impact with

shock resistance, along with optimum

tensile and yield strength.


46

STOP COLLARS

TYPES OF STOP

COLLARS

Hinge Bolted

S/C

Slip On Set

Screw Stop

Collar

Hinge Set Screw

Stop Collar

Hinge Spiral Nail

S/C


47

PERFORMANCE OF STOP COLLAR :

Stop collars are being tested in accordance

with API 10D-2/ISO 10427-2 to evaluate

their performance characteristics reliable to

suite filed applications.

The test casing is within the tolerances as

indicated in ISO 11960 for non-upset pipe.

Burrs or Similar defects being removed prior

to testing.

The outer sleeve should provide a load

surface to distribute the load to the stop

device (as shown in Fig.-2).

Holding force being recorded at the starting

point of slippage of stop collar and till the

end of the test for displacement of stop

collar along the casing up-to 4 inch.


48

Hinged Bolted Stop Collars

MODEL : WC-SCHB ( WC-40901)

An economical collar suitable for subcritical

annular tolerances. Available in the size range 4

½ ‖ to 20‖, it has a cross bolt design which

makes it an efficient and user friendly device

Hinged Spiral Nail Stop Collars

MODEL : WC-SCHN (WC-40902)

Available in the size range 4 ½ ‖ to 20‖, this

device can be set in both upset and non-upset

casing to provide maximum clearance during

rotation.

It has a groove in the middle into which a

spiral nail can be driven for improved grip on the

casing. The broader band firmly grips the collar

into position around the casing.

Hinged Stop Collars with Set Screw

MODEL : WC-SCSS-1 (WC-40903)


device has a high cost-utility ratio. This hinged

collar with a row of set screws positions easily

and firmly around the casing.

Slip-on Stop Collars with Set Screws

MODEL : WC-SCSS (WC-40904)

This slip-on set screw device is recommended

for small hole operations. Available in size

range 2-7/8‖ to 20‖ and is gripped by a row of

screws, this is a heavy duty device


49

Wire Bristle Scratch

MODEL : WC-SCWS (WC-41001)

Consists of a hinged collar radiating into

bristles. Each bristle is made of hardened &

tempered wire with two scratching elements.

Available in the size range 4 ½ ‖ to 20‖ these

scratchers improve the cement bond between

the casing and porous formations while

reinforcing the cement column.

Wellbore Wipers

MODEL: WC-SCWW (WC-41101)

Consisting of loop wire cables of tempered

steel laced into a collar, these wipers clean the

well bore efficiently by permitting removed

filter cake to pass, thereby providing excellent

reinforcement to the cement column especially

under close spacing.

Available in size range 4 ½ ‖ to 20


50

Hinged Baskets

MODEL : WC-HWB (WC-41201)


device consists of flexible steel spring bows

welded to slip-on collars. Bows are hardened

and tempered for maximum strength and

uniformity. It is run on casing or liners above

weak or porous formations to provide

protection from hydrostatic pressure generated

by the cement column. Its overlapping metal

fins provide flexibility and fluid passage while

maintaining optimum support characteristics.

Slip-ON Baskets

MODEL : WC-SWB (WC-41202)


device consists of flexible steel spring bows

welded to slip-on collars. Bows are hardened

and tempered for maximum strength and

uniformity. It is run on casing or liners above

weak or porous formations to provide

protection from hydrostatic pressure generated

by the cement column. Its overlapping metal

fins provide flexibility and fluid passage while

maintaining optimum support characteristics.


51

CEMENTING HEAD

The Plug Dropping Cement Head is designed to

drop Wellcare’s Stage Collar cementing plugs or

conventional top and bottom cementing plugs.

Cement Heads are available in either single or

Double cavity configurations.

Cement Head is manufactured utilizing API

grade steels with connections for API 8 Round,

buttress and premium threads. Cementing Heads

are available in a wide range of working

Pressures from 3,000 psi / 20 Mpa to 10,000 psi /

68 Mpa. All cement heads are hydrostatically

tested prior to shipment. Design of Cement Head

incorporates such features as quick release

retainer bar, double gland seals for positive

sealing of indicating wires, fully detachable

cementing manifold and an integral pressure

relief system to allow for pressure equalization.

Optional features include plug cavity sweep arm

for confirming plug release, rotating release

retainer bars and quick

change casing connectors. The cement head

manifold is supplied with either ball valves or

plug valves rated to the same working pressure

as the cement heads. Cement Heads are available

in sizes 2 3/8" / 60mm through 20" / 508mm

MODEL: WC-CTHD-2


Double Cavity Cement Head

Plug Valve

Quick Change Casing

Connector

Rotating Release Retainer Bars

Acme Thread Casing

Connector

MODEL: WC-CTHD-1


Double Cavity Cement Head PLUG CAVITY SWEEP ARMS

STANDARD QUICK RELEASE

RETAINER BARS

ACME THREADED CASING

CONNECTOR

Corporate Office Works

Plot No.67, Sector-17A Plot No. F 209,210

Dist: Gurgaon IID, RIICO Industrial Area

Haryana-122001 Khuskhera, Dist. Alwar

Email Id: Rajasthan-301707

[email protected] Email Id: [email protected]

Phone No.: 01493-250357 Fax No.: 01493-250157

Visit us at www.wellcareoiltools.com

MANUFACTURER OF:- Completion Systems (Packers)

Bridge Plug & Cement Retainers

Liner Hanger Systems

Flow Control Systems

Completion Accessories

Cementing Products

(Float Equipments & Centralizers)

Oil Field Elastomers (Plugs, Swab Cups etc)

Gas Lift Equipments

WELLCARE OIL TOOLS PVT. LTD.

Casing Accessories , completion tools, liner hanger system

Design

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