COLOSSUSPremium Liner Hanger System

COLOSSUS

The COLOSSUS* premium rotational liner hanger system was designed to meet such challenges. Each component is engineered to optimize the load, pressure, and bypass ratings of the complete system and can be pushed, pulled, and rotated as required to work the string to total depth.

Hydraulically set and released, this system is designed for deepwater and deep onshore wells, high-pressure, high-temperature (HPHT) environments, and horizontal, extended-reach, tight, and deviated wellbores requiring high-hanging and drill-down capabilities.

Deep wells create special challenges for liner hanger systems. In highly deviated

boreholes, for example, the liner hanger must withstand high-

torque and high-tensile loads.Using the COLOSSUS liner hanger system can reduce casing costs, improve cement jobs, minimize formation damage, and maximize well control during the comple-tion operation.

FROM CONCEPT TO COMPLETION

The COLOSSUS liner hanger system has been developed through research, testing, and reli-able field performance.

Design. During the new product design phase, engineers study the effects of pressure and temperature on liner hanger system compo-nents, including rapid analysis of the forces, stresses, and movement in the wellbore, and numerical screening techniques such as finite-element analysis. These programs are applicable to both simple and complex well conditions and help optimize product design

and reduce product development cycle time. The results and feedback required to design a successful well completion provide precise design specifications for manufacturing.

Manufacturing. Schlumberger uses the latest computer numerical control machine tool technologies to precisely manufacture liner hanger components according to design specifications.

Qualification testing. Temperature, pressure, and load prerelease tests are conducted on system components at engineering test facilities in Houston to meet both industry-

and client-specific requirements. Testing parameters are visually monitored, fully documented, and compliant with ISO 14310 V3 and V0 industry standards.

Liner hanger components are tested individu-ally for hanging and load capacity, pressure and temperature conditions, tensile and torsional capabilities, and for torque, burst, and collapse resistance. The entire liner hanger system is function tested to ensure that each component will work in conjunction with the others when deployed in the well.

Protect the integrity of your completion.

COLOSSUS LINER HANGER SYSTEM

The COLOSSUS liner hanger system features a high-capacity rotating liner hanger (HCHR), a PV liner top packer, a running tool with optional release mechanisms—hydraulic (CRT), mechanical (RRT), hydromechanical (RRT-HM)—and cementing accessories.

HCHR high-capacity rotating liner hanger■ Enhanced hanging capacity■ Fully pocketed slips■ Anti-preset mechanism■ Optimized bypass

Landing collar■ Collar that ensures rapid

and complete drillout

Float collar■ Collar used when running and

cementing liner casing strings■ Collar that prevents uncured cement

in annulus from cycling back to liner after displacement

LWPC liner wiper plug ■ Pro�le for pump-down plug

to latch and seal■ Mechanism for wiping cement

from inside liner and keeping it separated from displacing �uid

■ Locking mechanism to protect against backpressure

■ Antirotation feature that reduces drillout time

Reamer �oat shoe ■ Shoe that enables system

to reach target depth

RBS rotational ball seat stub assembly■ Fullbore clearance after ball seat shears■ Fullbore geometry assembly design that

ensures that ball seat is completely tripped and retained in fullbore open position

■ Hydraulically activated shear mechanism■ Variable shear pressure settings

RCB retrievable cementing bushing■ Full-circle locking lugs in bushing for optimum pressure resistance■ Small piston area that reduces force on workstring during

circulating and cementing process■ Capability of retrieving bushing with setting tool,

leaving full opening to the liner

CRT collet running tool■ Ability to carry heavy liner loads ■ Clutch that transmits high torque to the liner■ Backup mechanical release

Rotating dog assembly■ Rotation of workstring

for ef�cient load transfer■ Premium tool joint connections

for high-torque applications■ High-performance bearing■ High tensile rating to match

system tensile capacity

Junk bonnet■ Blockage of debris from tieback receptacle■ Positive latch system that prevents premature release■ Built-in bypass for balanced pressure across tieback receptacle■ Secondary shear release capability

PDPC pump-down plug■ Plug for separating cement

and displacement �uid■ Locking mechanism to

protect against backpressure

PV liner top packer■ ISO-14310 V3 and V0 quali�ed■ Antiswab element design■ Standard hold-down slips■ Premium connections

Tieback receptacle■ Receptacle that permits

landing, sealing, and extension of additional liner above main liner

SYSTEM APPLICATIONS■ Deepwater and deep onshore wells ■ High-pressure, high-temperature

environments■ Horizontal, extended-reach, tight, and

deviated wellbores■ Wells requiring drilldown capability

■ Enhances well stability and safety by – allowing long, heavy liners to rotate

during cementing– preventing upward movement of the liner– reducing weight on the wellhead

SYSTEM BENEFITS■ Minimizes completion time by

– deploying drilldown liner system– rotating the liner when running in hole– circulating at high rates– tripping at a high speed

■ Reduces well costs by – reducing the amount of casing required to

complete the well– deploying hanger in drilldown applications

Hydraulic-set, hydraulic-release system

HCHR high-capacity rotating liner hanger■ Enhanced hanging capacity■ Fully pocketed slips■ Anti-preset mechanism■ Optimized bypass

Landing collar■ Collar that ensures rapid

and complete drillout

Float collar■ Collar used when running and

cementing liner casing strings■ Collar that prevents uncured cement

in annulus from cycling back to liner after displacement

LWPC liner wiper plug ■ Pro�le for pump-down plug

to latch and seal■ Mechanism for wiping cement

from inside liner and keeping it separated from displacing �uid

■ Locking mechanism to protect against backpressure

■ Antirotation feature that reduces drillout time

Reamer �oat shoe ■ Shoe that enables system

to reach target depth

RBS rotational ball seat stub assembly■ Fullbore clearance after ball seat shears■ Fullbore geometry assembly design that

ensures that ball seat is completely tripped and retained in fullbore open position

■ Hydraulically activated shear mechanism■ Variable shear pressure settings

RCB retrievable cementing bushing■ Full-circle locking lugs in bushing for optimum pressure resistance■ Small piston area that reduces force on workstring during

circulating and cementing process■ Capability of retrieving bushing with setting tool,

leaving full opening to the liner

CRT collet running tool■ Ability to carry heavy liner loads ■ Clutch that transmits high torque to the liner■ Backup mechanical release

Rotating dog assembly■ Rotation of workstring

for ef�cient load transfer■ Premium tool joint connections

for high-torque applications■ High-performance bearing■ High tensile rating to match

system tensile capacity

Junk bonnet■ Blockage of debris from tieback receptacle■ Positive latch system that prevents premature release■ Built-in bypass for balanced pressure across tieback receptacle■ Secondary shear release capability

PDPC pump-down plug■ Plug for separating cement

and displacement �uid■ Locking mechanism to

protect against backpressure

PV liner top packer■ ISO-14310 V3 and V0 quali�ed■ Antiswab element design■ Standard hold-down slips■ Premium connections

Tieback receptacle■ Receptacle that permits

landing, sealing, and extension of additional liner above main liner

The high-capacity rotating liner hanger (HCHR) is designed for deep, challenging wells and HPHT environments. Its slip-cone design distributes axial and radial loading through the hanger and delivers increased hanging capacity over cone-type hangers.

The pocketed slips facilitate drilldown operations. A high- performance bearing allows the long, heavy liners to rotate to improve cement integrity.

FEATURES

■ Proprietary slip-cone design that delivers lower and more uniform stresses in casing and mandrel

■ Hydraulic setting mechanism■ Slip-cone design that eliminates

cone collapse ■ Slip design and hardness com-

patibility with high-grade casing■ Anti-preset mechanism that aids

in completion of challenging wells■ High-performance bearing that

allows rotation of heavy liners during cementing operations

■ Standard premium connections

The PV weight-set liner top packer is ISO 14310 V3 and V0 qualified and rated to a differ-ential pressure of 10,000 psi [68.94 MPa] in most sizes.

During running and cementing operations, a cementing packoff maintains a seal between the work string and the liner.

The packer includes an integral retrievable cementing bushing profile, which is designed to elim inate the need for a separate adapter in the liner hanger assembly.

FEATURES

■ Antiswab element design■ Compatibility with mechanical-

or hydraulic-release setting tools■ High torque capacity to rotate

long liners■ Integral mandrel and setting

adapter design■ Tested to 10,000 psi [68.94 MPa]

and 400 degF [204.4 degC]

High-Capacity Rotating Hanger PV Liner Top Packer Collet Running Tool Right-Hand-Release Running Tool

The collet running tool (CRT) is a hydraulic-release running tool that requires no rotation to be released from the liner, thereby making it suitable for applications with high-inclination wells. The clutch and premium tool joint connections permit high-torque rotating and drilldown throughout the liner system.

In cases in which a rotational liner hanger is deployed, this tool enables the liner to be rotated after the liner hanger is set. A backup mechanical-release mechanism ensures the tool’s release from the liner.

FEATURES

■ Special clutch design that transmits high torque to liner

■ Variable shear-pressure settings

■ Optional standing valve profile in bottom sub for contingency release

The right-hand-release running tool (RRT) is a mechanical- or hydromechanical-release tool designed for systems that require high torque to enable the liner to be drilled during the operation.

In cases in which a rotational liner hanger is deployed, this running tool enables the liner to be rotated after the liner hanger is set. It can be configured into a hydraulic- or mechanical-release tool. The tensile and torque ratings make it suitable for challenging liner hanger applications.

FEATURES

■ Conversion kit option for mechanical or hydraulic release

■ Hydraulic lock feature that reduces risk of premature liner release

■ Right-hand running-thread–type release

■ Standing-valve profile to facilitate release if ball seats are washed out

Three-Phase Operations Support Process

Design■ Collect and validate well parameters ■ Select optimum liner hanger equipment■ Simulate torque and drag, surge and swab

Execute■ Register hook load versus string depth■ Simulate axial force buckling effect■ Monitor torque limits■ Record changes in circulating pressures,

string weight, pressure and temperature, reverse circulation volume, and flow rate

Evaluate■ Review operations and provide postjob

analysis■ Evaluate performance of the equipment■ Recommend liner hanger system for

optimizing operations■ Store feedback in a secure database

Operations SupportMatching the best-performing liner hanger system with a particular well’s parameters requires a deep understanding of the well- bore environment and its potential challenges. A dedicated team of Schlumberger engineers works with you to understand these chal-lenges and recommend the appropriate liner hanger system for the operation. Their engineering knowledge and expertise, our innovative tool designs, and our simulation software help streamline liner hanger de-ployment, optimize the operation, minimize risks, and reduce costs.

This selection-feedback cycle is based on a three-phase process of design, execution, and evaluation.

Design. Schlumberger completion engineers help you select the optimum liner hanger equipment based on your specific well requirements and parameters, including depth, liner length, wellbore deviation, and

pressures and temperatures. They use simulation software to create torque and drag models and surge and swab models to ensure that buckling and failure of tools are avoided and that operations can be com-pleted correctly the first time—as planned and on budget.

Execution. Sophisticated software is put in place at the rig site to record key well parameters. Engineers monitor the liner hanger operation, record key parameters, and provide expertise onsite for optimal running speeds.

Evaluation. Engineers view the actual well parameter data and run additional simulations to review the details of the operation. The results enable them to provide a postjob analy-sis and evaluate the performance of the liner hanger system. All the information is stored in a secure database for future reference.

One trusted source for your completions

Schlumberger expanded

its Completions product

portfolio in 2010 to

include the full line of

Smith International liner

hangers and accessories.

These systems complement

existing Schlumberger

technologies and allow

you to complete your

wells using equipment

and services from one

trusted source.

Expert, personalized support

www.slb.com/linerhangers

*Mark of SchlumbergerConfidence in Completions is a mark of Schlumberger.Copyright © 2011 Schlumberger. All rights reserved. 10-CO-0160

COLOSSUS

The COLOSSUS premium rotating

liner hanger system, designed

for deepwater and deep onshore

wells and high-pressure, high-

temperature environments,

helps protect the integrity of your

completion.

Confidence in Completions