3D PDC bit model predicts higher cutter loads
Historically, PDC bit modeling has incorporated the assumption that cutter forces are constant for a full revolution of the bit. This assumption places considerable limits on the model's ability to simulate drilling in nonhomogeneous rock and in cases where the bit whirls. Recent studies have shown that cutter damage caused by impact loading is a primary cause of PDC bit failure. These impacts may be caused by both bit whirl and drilling through nonhomogeneous rock. The 3D model presented provides the capability to evaluate cutter loading for both conditions. It shows that the cutter loads for common drilling situations may be as much as 10 times greater than those calculated with previously available 2D models.
- OSTI ID:
- 5465260
- Journal Information:
- SPE Drilling and Completion (Society of Petroleum Engineers); (United States), Journal Name: SPE Drilling and Completion (Society of Petroleum Engineers); (United States) Vol. 8:4; ISSN 1064-6671; ISSN SDCOE5
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
422000 -- Engineering-- Mining & Underground Engineering-- (1980-)
DRILL BITS
DRILLING
DRILLING EQUIPMENT
DYNAMIC LOADS
EQUIPMENT
NATURAL GAS WELLS
OIL WELLS
PERFORMANCE
STATIC LOADS
WELL DRILLING
WELLS