Download Workover Bit Brochure - Varel International

L2IADC Code 211Compressive Strengths:All Regular Circulation:Gage Types:4,000 to 10,000 (psi)2-15/16" and larger“A” ToothFormations: Wide range of medium formations such as altered limestones,shales, anhydrite and other formations with medium compressive strengths.Features: Moderately skewed cone design. Teeth hardfaced on one flankto resist abrasion. Vented “A” type gage gives high rates of penetration.L1IADC Code 321Compressive Strengths:All Regular Circulation:Gage Types:8,000 – 18,000 (psi)3-1/2" and larger“A” ToothFormations: Specifically designed for fast penetration in formations thatare hard, but not particularly abrasive.Features: Designed to conform to latest drilling techniques requiringheavier weights. Similar in design to the LH1, but does not havewebbed heel row.LH1IADC Code 331Compressive Strengths:All Regular Circulation:Gage Types:9,000 – 20,000 (psi)2-7/8" and larger“U” ToothFormations: Hard formations, such as pyrite, chert, dolomites, graniteporphyry and other formations which have high compressive strengthsand are abrasive.Features: Closely spaced, strong short teeth for maximum crushingand chipping.www.varelintl.com

DURATECH BITSThis steel tooth series of products delivers rapid rate of penetration (ROP)and new hardmetal protection for life-enhancing durability in the mostdemanding environments. This series incorporates Varel's new technologysealed bearing system. DuraTech bits can withstand the added stressthat operators place on bits when additional weight and greater RPMsare necessary.The series is designed to provide:• Added durability in abrasive environments• Increased ROP• Directional responsiveness• A solution for sticky shale drillingCOMPASS BITSRe-entries, multi-laterals, and coiled tubing drilling all require steerability,reliability and efficient rate of penetration. Engineered with applicationspecific technology, the new Compass Series Slimhole Bits provideexcellent steerability and high rates of penetration even when weighton bit is limited.These tungsten carbide insert bits are equipped with a patentedbearing package to provide long, reliable performance in deep hole,long reach sections where increased RPMs in motor applications arecommonly encountered.PDC BITSVarel's leading lines of matrix and steel body PDC drill bits are alsoavailable for workover applications including coiled tubing, compositeplugs and drilling ahead in motor applications. Remedial PDC bits areavailable in sizes ranging from 3-1/2” to 8-1/2”, please contact yourVarel Representative for specific information.

Connection OptionsOur availability chart highlights bits that are available with either 4-Thread N-Rod connection or standard API connection.Workover Bit AvailabilityDiameter Soft / Medium Pin SizeInches mm IADC 211 IADC 321 IADC 3312 7/8 73.1 LH1 4 THD N Rod2 15/16 74.7 L2 LH1 4 THD N Rod3 76.2 LH1 4 THD N Rod3 1/8 79.4 L2 4 THD N Rod3 1/4 82.6 L2 4 THD N Rod3 3/8 85.8 L2 4 THD N Rod3 1/2 88.9 L2 L1 2 3/83 5/8 92.1 L2 L1 2 3/83 3/4 95.3 L2 LH1 2 3/83 7/8 98.5 L2 L1 LH1 2 3/84 101.6 L2 L1 LH1 2 3/84 1/8 104.8 L2 L1 LH1 2 3/84 1/4 108.0 L2 LH1 2 3/84 1/2 114.3 L2 LH1 2 3/84 5/8 117.5 L2 2 7/84 3/4 120.7 L2 L1 LH1 2 7/84 7/8 123.9 L2 LH1 2 7/85 127.0 L2 LH1 2 7/85 1/8 130.2 L2 2 7/85 1/4 133.4 L2 2 7/85 3/8 136.6 L2 2 7/85 1/2 139.7 L2 2 7/85 5/8 142.9 L2 3 1/25 3/4 146.1 L2 3 1/25 7/8 149.3 L2 3 1/26 152.4 L2 3 1/26 1/8 155.6 L2 L1 3 1/26 1/4 158.8 L2 3 1/26 1/2 165.1 L2 3 1/26 5/8 168.3 L2 3 1/26 3/4 171.5 L2 3 1/27 7/8 200.1 L2 4 1/28 1/2 215.9 L2 4 1/2www.varelintl.com

lbsApprox Wt Compass Series DuraTech Serieskg4 1.85 2.35 2.35 2.36 2.36 2.38 3.68 3.610 4.510 4.5 DT410 4.510 4.510 4.511 5.0 CM3413 5.913 5.9 CM44 DT413 5.9 CM4415 6.823 10.419 8.619 8.619 8.6 CM34, CM5523 10.4 CM18, CM24, CM34, CM48, CM5519 8.623 10.4 CM24, CM3427 12.2 CM18, CM24, CM25, CM28, CM34, CM44, CM45, CM48 DT427 12.2CM24, CM25, CM28, CM34, CM38, CM35, CM44, CM47,CM48, CM54, CM55, CM57, CM6727 12.2 CM24, CM25, CM28, CM34, CM38, CM44, CM48 DT129 13.2 CM24, CM47, CM55, CM54 DT129 13.232 14.5 CM24, CM34, CM38, CM44, CM47, CM54, CM5570 31.8 DT175 34.0 DT3

Workover Bits forremedial, re-entryAND frac plugdrilling ApplicationsWorld HeadquartersDallas, Texas USATel: 1.800.827.3526Tel: +1.972.242.1160Fax: +1.972.242.8770info@varelintl.com© VAREL INTERNATIONAL 2011