PDC-bit performance under simulated borehole conditions

Journal Article · Wed Sep 01 00:00:00 EDT 1993 · SPE Drilling Engineering (Society of Petroleum Engineers); (United States)

DOI:https://doi.org/10.2118/20412-PA· OSTI ID:5869441

Anderson, E E ^[1]; Azar, J J ^[2]

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1. Conoco Drilling Technology Development Group, Ponca City, OK (United States)
2. Univ. of Tulsa, OK (United States). Drilling Research Projects

Laboratory drilling tests were used to investigate the effects of pressure on polycrystalline-diamond-compact (PDC) drill-bit performance. Catoosa shale core samples were drilled with PDC and roller-cone bits at up to 1,750-psi confining pressure. All tests were conducted in a controlled environment with a full-scale laboratory drilling system. Test results indicate, that under similar operating conditions, increases in confining pressure reduce PDC-bit performance as much as or more than conventional-rock-bit performance. Specific energy calculations indicate that a combination of rock strength, chip hold-down, and bit balling may have reduced performance. Quantifying the degree to which pressure reduces PDC-bit performance will help researchers interpret test results and improve bit designs and will help drilling engineers run PDC bits more effectively in the field.

• OSTI ID: 5869441
• Journal Information: SPE Drilling Engineering (Society of Petroleum Engineers); (United States), Vol. 8:3; ISSN 0885-9744
• Country of Publication: United States
• Language: English

Related Subjects

42 ENGINEERING
02 PETROLEUM
03 NATURAL GAS
DRILL BITS
DESIGN
PERFORMANCE TESTING
BENCH-SCALE EXPERIMENTS
EXPERIMENTAL DATA
NATURAL GAS WELLS
OIL WELLS
PERFORMANCE
WELL DRILLING
DATA
DRILLING
DRILLING EQUIPMENT
EQUIPMENT
INFORMATION
NUMERICAL DATA
TESTING
WELLS
422000* - Engineering- Mining & Underground Engineering- (1980-)
020300 - Petroleum- Drilling & Production
030300 - Natural Gas- Drilling
Production
& Processing