Inventor
STEIGER RONALD P
US15 patents
Patents
15 patentsUS5226310AJul 13, 1993
Methods and apparatuses for measurement of the strengths, pore pressures, and mechanical properties of low permeability geologic materials
EXXON PRODUCTION RESEARCH CO131 citations97
US5285692AFeb 15, 1994
Methods for measuring physical parameters of a low permeability rock formation in situ
EXXON PRODUCTION RESEARCH CO54 citations95
US5205164AApr 27, 1993
Methods for determining in situ shale strengths, elastic properties, pore pressures, formation stresses, and drilling fluid parameters
EXXON PRODUCTION RESEARCH CO69 citations95
US5159828ANov 3, 1992
Microaccumulator for measurement of fluid volume changes under pressure
EXXON PRODUCTION RESEARCH CO69 citations95
US5275063AJan 4, 1994
Measurement of hydration behavior of geologic materials
EXXON PRODUCTION RESEARCH CO86 citations94
US5265461ANov 30, 1993
Apparatuses and methods for measuring ultrasonic velocities in materials
EXXON PRODUCTION RESEARCH CO78 citations94
US5435187AJul 25, 1995
End-cap-to-piston coupling for triaxial test apparatus
EXXON PRODUCTION RESEARCH CO80 citations92
US5253518AOct 19, 1993
Apparatuses and methods for adjusting a material's fluid content and effective stresses
EXXON PRODUCTION RESEARCH CO58 citations92
US5198415AMar 30, 1993
Nontoxic, nonchloride, water-base, inhibitive fluid to stabilize water sensitive shale
EXXON PRODUCTION RESEARCH CO37 citations92
US4876512AOct 24, 1989
Method for rapidly determining the swelling-clay content in shales and shaly sandstone formations by high-frequency dielectric constant measurements
EXXON PRODUCTION RESEARCH CO25 citations90
US4602690AJul 29, 1986
Detachable apparatus for preventing differential pressure sticking in wells
EXXON PRODUCTION RESEARCH CO24 citations82
US5359903ANov 1, 1994
Load cell
EXXON PRODUCTION RESEARCH CO17 citations81
US4979393ADec 25, 1990
Process for rapidly determining the solids content in drilling fluids
EXXON PRODUCTION RESEARCH CO19 citations73
US4427080AJan 24, 1984
Apparatus for preventing differential sticking in wells
EXXON PRODUCTION RESEARCH CO11 citations73
US5010301AApr 23, 1991
Method for determining the swelling clay content of cement mixtures by dielectric measurements
EXXON PRODUCTION RESEARCH CO14 citations71