Effects of pore pressure and mud filtration on drilling rates in a permeable sandstone

Journal Article · Sun Sep 01 04:00:00 EDT 1985 · J. Pet. Technol.; (United States)

DOI:https://doi.org/10.2118/12117-PA· OSTI ID:6323045

Black, A D; Dearing, H L; DiBona, B G

During laboratory drilling tests in a permeable sandstone, the effects of pore pressure and mud filtration on penetration rates were measured. Four water-based muds were used to drill four saturated sandstone samples. The drilling tests were conducted at constant borehole pressure while different backpressures were maintained on the filtrate flowing from the bottom of the sandstone samples. Bit weight was varied also. Filtration rates were measured while circulating mud during drilling and with the bit off bottom. Penetration rates were found to be related qualitatively to the difference between the filtration rates measured while drilling and circulating. There was no observed correlation between standard API filtration measurements and penetration rate.

• Research Organization: Drilling Research Laboratory Inc.
• OSTI ID: 6323045
• Journal Information: J. Pet. Technol.; (United States), Journal Name: J. Pet. Technol.; (United States) Vol. 37:10; ISSN JPTJA
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
BENCH-SCALE EXPERIMENTS
CRYSTAL STRUCTURE
DRILLING
DRILLING EQUIPMENT
DRILLING FLUIDS
DRILLS
EQUIPMENT
FLUIDS
HYDRAULIC CONDUCTIVITY
MEASURING METHODS
MICROSTRUCTURE
PERFORMANCE
PERMEABILITY
POROSITY
PRESSURE EFFECTS
RESERVOIR PRESSURE
RESERVOIR ROCK
ROCKS
SANDSTONES
SEDIMENTARY ROCKS
STANDARDS
WELL DRILLING