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9-7/8, 12-1/4 Inch Tricone and Vanguard STL Drill Bits (5 Units)

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Quantity: 5 Units
Product Location: Washington, United States

Seller Description

9 7/8” Tricone Bits Features (3 Units) - New
 
Located in Washington

  • IADC: 7-4-2
  • Bearing and Seal: Non-sealed roller bearing
  • Number of rows: 5-5-4
  • Number of cutters: 173
  • Main cutter shape/ Cutter exposure: Conical compacts / 6.8mm
  • Gage row cutter shape: Spherical compacts
  • Outlet diameter of nozzle: 12.7
  • Shank: 6 5/8 REG

Recommended operating parameters WOB:145 ~ 295(KN)

Rotary speed: 80 ~ 50 (rpm)
The above parameters are only for reference. Optimized parameters are determined by drilling process and

lithology of formations on site

Applicable formations:
Hard with high compressive strength and high abrasiveness, such as granite, limestone, sandy shale, dolomite and chert, etc.

______________________________________________

12 1/4” Tricone Bits Features (1 Unit) - New
Located in Washington

  • IADC: 5-3-7
  • Bearing and Seal: Rubber O-ring sealed journal bearing
  • Number of rows: 5-5-4
  • Number of cutters: 175
  • Main cutter shape/ Cutter exposure: Offset crested scoop compact/ 9.9mm
  • Gage row cutter shape: Offset wedge compact
  • Size of noozle: 32.89x26.97
  • Size of center nozzle e: NO
  • Shank: 6 5/8 REG
  • Recommended makeup torque: 37.9 ~ 43.3 (NK.m)

Recommended operating parameters WOB:150 ~ 320(KN)

Rotary speed: 110 ~ 40(rpm)
The above parameters are only for reference. Optimized parameters are determined by drilling process and lithology of formations on site.

Applicable formations
Medium soft with low compressive strength and hard abrasive stringers, such as hard shale , hard gypsolyte, soft limestone, sandstone and dolomite with stringers, etc.

______________________________________________

9-7/8” Vanguard STL drill bit (1 Unit) - Used
Located in Texas

Tested in laboratory to prove out the new (at that time which is the current standard) hard-face material to protect the base steel of the roller cones and body. 

This Bit (IADC 157, model EP7588, serial number 5220216) also features sealed bearings with metal faced seals, and grease pressure compensators for downhole use at each cone.  

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