VAREL Mining

7/23/2019 VAREL Mining

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ROTARY

PERCUSSIONSYSTEM

The synergy of speedand versatility.


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Performance Synergy

The RPS tool employs the efficient application of the compressed

air energy, not just maximum striking force per blow. This application

is highly complimentary to existing rotary drilling forces, and that

complimentary SYNERGY is utilized in three ways to maximize rate

of penetration and overall performance:

Percussion EnergyThe RPS system delivers additional energy to the bit, supplementing the energy delivered by the

rotational and pull-down forces of standard rotary drilling. Unlike DTH hammers, this energy comes

in relatively low impact bursts, up to 30 times a second. The axial forces of percussion energy result

in a pulverization zone that can be up to twice the length of the striking cutter (TCI, mill tooth, other)

in depth. This pulverization zone creates two opportunities for synergy to occur:

Additional material removed by the digging movement of the rotary forces Assist in completely burying the carbide / cutter

RPS Unique Cutting ActionPercussion blows combine with rotational forces to deliver impacts similar to chipping or chiseling.

These blows are applied 16-30 times a second to smooth out torque, resulting in:

Less vibration Cleaner, straighter bore gage Better, larger cuttings Opportunity to maintain or increase rotary pull downAbility to maintain or increase rotary RPMs Opportunity for more aggressive cutting structures

The combination of all these benefits creates the opportunity to drill more aggressively while

maintaining safe and smooth drill operations.

RPS VersatilityWith RPS, you are able to drill a much broader array of geological formations and drilling conditions

with greater ease and higher performance.

Drill in softer formations with a more aggressive bit and still be able to penetratelayers of harder rock.

Drill in hard formations with a hard formation bit and still drill efficiently through

soft clays or alluvium. Mitigates concern over water or other bore intrusions that might cause the tool to stop.Drilling can continue in straight rotary mode.

Switching out bits is easy all RPS tools are built with API bit connections.


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RPS GENERAL SPECIFICATIONS

Model O.D. Bit Sizes

RPS54 5.50" (139.7mm) 6.125 6.75" (155.575 - 171.45 mm)

RPS65 6.625" (168.275 mm) 7.875 8.50" (200.025 - 215.9 mm)

RPS75 7.625"(193.675 mm) 9 9.875" (228.6 - 250.825 mm)

RPS85 8.625"(219.075 mm) 10.625 11" (269.875 - 279.4 mm)

RPS92 9.250"(234.95 mm) 11 12.25" (279.4 - 311.15 mm)

RPS106 10.750" (273.05 mm) 12.25 15" (311.15 - 381 mm)

RPS133 13.375" (339.725 mm) 15 16" (381 - 406.4 mm)

Rotary Percussion System (RPS)*

Varels patented RPS percussion tools provide

unparalleled performance, versatility and reliability

to virtually any rotary drilling environment. Designed

for air rotary operations, the RPS delivers increased

rate of penetration, reduced total drilling cost and

more value to the bottom line with its unique ability

to harness rotary and percussion forces.

Features

Patented design allowing air rotary rig drillers to combineand leverage rotary drilling methods with percussion

energies for maximum rate of penetration

Operates on any air rotary drill rig with as little as 80 psi

Geological Applications

The RPS system builds upon roller cone versatility;providing enhanced performance in both soft and

hard formations

More effectively navigates transition zones and highlyfractured formations; providing straighter boreholes and

reducing bending stresses on drill steel

Mining & Industrial ApplicationsWater Well Construction

Construction Industry

Blast-hole Operations

U.S. Patent No. 7,377,338

RPS and RPS Logo

are trademarks of

Varel International

Non-standard products are available upon request. Please allow 8 10 weeks for delivery

of non-standard RPS products. Non-standard products require a 50% non-refundable

deposit with remaining portion due upon receipt.

Case

Piston

Top S

Split RetainingRing

Scree

Wear

Drive

Exhau

Drive

Mand

RP B


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ROTARY PERCUSSION BIT AVAILABILITY

Diameter Soft > Medium Medium > Hard Hard > Very HardPin

SizeApprox

Size Inches mm 1 2 3 1 2 3 1 2 3 Inches lbs

RPS54 6-3/4 171 RP43 RP50 RP60 3-1/2 46

RPS65 7-7/8 200 RP43 RP53 4-1/2 76

RPS65 8-1/2 216 RP40 RP67 4-1/2 83

RPS75 9 229 RP43 RP53 4-1/2 96

RPS75 9-7/8 251 RP53 RP63 RP67 6-5/8 145

RPS85 10-5/8 270 RP30 RP43 RP53RP63

RP63GRP67 6-5/8 157

RPS92 12-1/4 311 RP60 RP67 6-5/8 225

PS106 12-1/4 311 RP60 RP67 6-5/8 225

PS106 13-3/4 350 6-5/8 292

PS106 15 382 RP60 7-5/8 450

PS133 15 382 RP60 7-5/8 450

PS133 16 406 RP60 7-5/8 460

CO threads available upon request.

ditional sizes will be available in the future.

RP Series Bits

Varel RP Series bits are based on the companys highly successful line

of RidgebackMarathon blast hole mining bits. RP bits are engineered

to stand up to the demands of rotary percussion tools and maximize

the performance available from rotary percussion systems drilling.

These bits incorporate the following enhancements:

Heavy duty welding process in the dome of the bit above the cones

Use of patented HETTMtungsten carbide inserts to provide for a toughened, impact resistantcutting structure

Three peripheral plates each welded over the bit seams adjacent to the nozzle bosses to addstructural strength to the RP series bits

In combination these features make RP bits the best option for RPS applications.

www.varelintl.com


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Bit Selection and Use

For maximum efficiency to be gained with the RPS tool, its imperative

to choose an optimal drill bit for the system. Due to the tremendous

amount of energy concentrated at the bit, a high quality bit is required

for success.

Critical components of drill bit selection should include:

Consideration of the synergies realized by utilizing bits with more aggressivecutting structures.

Confirm that products are high quality and built or modified to withstand theadditional forces resulting from the percussion energy, particularly axial forces

Cutting Structure Considerations

Compare current drill bit selection to one with a more aggressive cutting structure. It is suggestedto use the most aggressive structure possible for increased ROP.

Pay close attention to bit wear patterns. Bearing failure may indicate carbides are being fullyburied in formation, causing the body or cones to absorb additional energy that is not used

for cutting. This may indicate an opportunity to increase cutting structure aggressiveness.

General Guidelines

With RPS the customer is able to drill a muchbroader array of geological formations.

Drill in softer formations with a more aggressivebit and still drill effectively through harder formations.

Drill in hard formations with a hard formation bit andstill drill efficiently through softer formations.

No stoppage in drilling due to influx of formation fluidas the system does not hinder standard rotary drilling.


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VAREL INTERNATIONAL

CORPORATE HEADQUARTERS

1625 West Crosby, Suite 124

Carrollton, TX 75006 U.S.A.

Toll Free: +1.800.827.3526

Phone: +1.972.242.1160

Fax: +1.972.242.8770

Email: [email protected]

VAREL INTERNATIONAL

SAN ANGELO

958 Arroyo Street Bldg D

San Angelo, TX 76904 USA

Phone: +1.325.513.6257


SOUTH AMERICA

VAREL INTERNATIONAL

Ind. L.P. Sucursal del Peru

Las Poncianas 105/107

La Molina Vieja

Lima 12, Peru

Phone: +51.1.365.2529

Phone: +51.1.365.5178

Fax: +51.1.365-8305Cellular: +51.1.9999.60283.989

16430.989 164302



ASIA-PACIFIC

VAREL INTERNATIONAL

(Australia Pty Ltd)

Riseley Corporate Centre

Suite 31, 135, Riseley Street

Booragoon, WA 6154 Australia

Phone: +61.8.9315.9999

Fax: +61.8.9315.9800


VAREL INTERNATIONAL

EUROPE, AFRICA AND

MIDDLE EAST

14 Rue Gaillon - 75002 Paris, France

Phone: + 33 5 59 14 48 41

Mob: +33 6 32 52 59 90

Fax: + 33 5 59 98 78 62


VAREL INTERNATIONAL ENERGY SERVICES, INC. 2013

VAREL Mining

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