Roller Cone Bits - Oil & Gas Products 2006-2007 - Varel International

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C h a l l e n g e r T C I - S e a l e d R o l l e r B e a r i n g B i t s Advanced Cutting Structures Semi-Round Top Gage Protection Advanced Shirttail Contouring Shirttail Protection (see page 7) Replaceable Jet Nozzle Replaceable Center Jet Nozzle (J Feature)** PREMIUM OPTIONS* • Diamond Enhanced Back Row (D Feature) • Diamond Enhanced Gage and Back Rows (DD Feature) • Fully Diamond Enhanced Cutting Structure (DDD Feature) • Tungsten Carbide Coated Cones (E Feature) • Center Jet Nozzle (J Feature)** • Stabilization Inserts (R Feature) • Leading Edge Shirttail Inserts (S Feature) • Diamond Enhanced and Hardfacing (Z Feature) Shown: 17 1/2” CR04JMRS STANDARD FEATURES • Gage Protection (G Feature) • Mud Motor Shirttail Hardfacing (M Feature) 16 * optional features available at extra cost ** optional feature (on 8 3/8” & larger bits only) available at extra cost
A v a i l a b i l i t y C h a r t Advanced Cutting Structures Challenger tungsten carbide insert (TCI) cutting structures are designed to be durable, while maintaining the highest efficiency in rock destruction. Insert row placement and insert spacing are determined using Varel’s proprietary algorithms designed to reduce wear, prevent tracking, promote efficient drilling and ensure uniform loading across the bit face. Gage Protection Advanced gage protection is standard on all Challenger TCI bits. Semi-round top (SRT) tungsten carbide inserts on the back row aid in cutting the wall of the hole. These resist wear better than flat-topped inserts. Diamond Enhanced Back Row (D Feature)* One third of the carbide back row inserts is replaced with polycrystalline diamond (PCD)-capped inserts to increase gage holding in abrasive applications. Diamond Enhanced Gage and Back Rows (DD Feature)* One third of the back row and all gage inserts utilize PCDcapped inserts to maximize gage holding. Fully Diamond Enhanced Cutting Structure (DDD Feature)* All inserts are PCD-capped to extend bit life in the most abrasive applications. Shirttail Contouring Extensive shirttail contouring and clearance from the wall of the hole ensures that fine cuttings are carried away from the seal area, providing longer seal life. TCI - Sealed Roller Bearing Bit Availability BIT TYPE IADC Inches (in) Millimeters (mm) CR04 415 16, 17 ½ 406.4, 444.5 CR12 435 14 ¾ 374.6 CR13 435 16 406.4 CR14 435 16, 17 ½ 406.4, 444.5 CR18 445 16, 17 ½, 23 406.4, 444.5, 584.2 ETR24 515 17 ½, 24 444.5, 609.6 V515 515 26 660.4 CR34 535 14 ¾ 374.6 CR35 545 14 ¾ 374.6 ETR38 545 17 ½ 444.5 Center Jet Nozzle (J Feature)** A fourth interchangeable jet is installed in the center of the bit to reduce bit balling or provide extra flow capacity. (Available in 8 3/8" and larger bits only) Shale Diverting Insert/Shale Groove — Standard Challenger bits feature an innovative, stepped shale burn insert. This stepped design is more effective in diverting cuttings away from the seal, prolonging seal life. 17 * optional features available at extra cost ** optional feature (on 8 3/8” & larger bits only) available at extra cost
Page 2 and 3: T a b l e o f C o n t e n t s About
Page 4 and 5: V a r e l R o l l e r C o n e D r i
Page 6 and 7: F e a t u r e s Cutting Structures
Page 8 and 9: P r e m i u m O p t i o n s Diamond
Page 10 and 11: J o u r n a l B e a r i n g F e a t
Page 12 and 13: C h a l l e n g e r T C I - S e a l
Page 14 and 15: C h a l l e n g e r T C I - S e a l
Page 16 and 17: C h a l l e n g e r S t e e l T o o
Page 20 and 21: C h a l l e n g e r S t e e l T o o
Page 22 and 23: S t e e l T o o t h - O p e n B e a
Page 24 and 25: R o l l e r C o n e R e f e r e n c
Page 26 and 27: B i t S h i p p i n g W e i g h t s
Page 28: World Headquarters Dallas, Texas US

Roller Cone Bits - Oil & Gas Products 2006-2007 - Varel International

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