Sealed-Bearing Roller Reamer Reduces Torque, Increases ROP, and Saves USD 57,000 | Schlumberger
Tech Report
Location
United States, North America
Details

South Central Oklahoma Oil Province, Grady County

Lithology
Sandstone, shell

Depth in
1,490 ft

Depth out
10,389 ft

Job cutter revolutions
1,725,000

Total cutter revolutions
2,423,000

Background
The operator needed to improve ROP and reduce trip time while drilling the vertical section of wells in the South Central Oklahoma Oil Province to kickoff point. Downhole tool failures and multiple bit trips were common in offset wells while reaming through the highly abrasive sandstone formation to kickoff points.
Products Used

Sealed-Bearing Roller Reamer Reduces Torque, Increases ROP, and Saves USD 57,000

Roller reamer drills 8,893 ft in 123 hours with one bit in hard, abrasive sandstone formation

Cutter assemblies had been used on a prior job, accumulating 697,000 revolutions over 58 hours. An additional 1,725,000 revolutions were accumulated during this 123-hour run for a total of 2,423,000 revolutions and 181 hours. The cutter bearings were still in good condition for continued drilling in the hard abrasive sandstone formation.
Cutter assemblies had been used on a prior job, accumulating 697,000 revolutions over 58 hours. An additional 1,725,000 revolutions were accumulated during this 123-hour run for a total of 2,423,000 revolutions and 181 hours. The cutter bearings were still in good condition for continued drilling in the hard abrasive sandstone formation.
Products Used

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