Deep-drilling basic research. Volume 1. Summary report. Final report, November 1988-August 1990

Technical Report · Fri Jun 01 00:00:00 EDT 1990

OSTI ID:5505920

Maurer, W C; Andersen, E E; Hood, M; Cooper, G; Cook, N

Maurer Engineering Inc. (MEI) under contract with the Gas Research Institute (GRI), evaluated drilling of deep gas wells to determine future research projects. Three major areas were covered: (1) typical performance figures and procedures for wells exceeding 15,000 ft; (2) capabilities and limitations of alternative drilling mechanisms; and (3) a review of the rock mechanics involved in drilling and wellbore stability. Results of the study showed, that in deep wells seventy percent of the time is spent drilling or tripping due to slow penetration rates and reduced bit life. This is caused by changes in rock properties that are the result of high over burden and drilling fluid pressures. An economic and qualitative analysis evaluated and queued technologies that could increase penetration rates and extend bit life. The candidates providing the best possibility of success and maximum savings are PDC/TSD shear bits, slimhole drilling, roll-cone bits, and downhole motors; of these, improvements in shear bits have the best opportunity for near-term results. The report will serve many readers as a convenient reference for descriptions of deep drilling systems currently used in the U.S., typical performance data, mechanisms of wellbore stability, and descriptions of the entire variety of mechanism used to comminute rock.

• Research Organization: Maurer Engineering, Inc., Houston, TX (United States)
• OSTI ID: 5505920
• Report Number(s): PB-91-195891/XAB; TR-90-7-VOL-1; CNN: GRI-5088-260-1731
• Resource Relation: Other Information: See also Volume 2, PB91-195909. Prepared in cooperation with California Univ., Berkeley. Sponsored by Gas Research Inst., Chicago, IL
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
NATURAL GAS WELLS
WELL DRILLING
RESEARCH PROGRAMS
COMMINUTION
DEPTH 3-6 KM
DRILL BITS
DRILLING RIGS
DRILLS
ECONOMIC ANALYSIS
OVERBURDEN
PERFORMANCE
RESERVOIR FLUIDS
RESERVOIR PRESSURE
ROCK DRILLING
ROCK MECHANICS
STABILITY
TECHNOLOGY ASSESSMENT
WEAR
WELL CASINGS
WELL COMPLETION
DEPTH
DIMENSIONS
DRILLING
DRILLING EQUIPMENT
ECONOMICS
EQUIPMENT
FLUIDS
MECHANICS
WELLS
030300* - Natural Gas- Drilling
Production
& Processing