Stoneley wave-derived. delta. t shear log

Conference · Sun Jan 01 04:00:00 EST 1984

OSTI ID:6621051

Liu, O Y

This paper shows how ..delta..t shear can be determined by applying an iterative inversion method to the Stoneley wave in open holes. The Stoneley phase velocity depends not only on the formation shear modulus but also on other formation and borehole properties. Therefore, accurate shear velocity can be determined only by utilizing Stoneley velocity in combination with formation compressional velocity, bulk density, borehole fluid compressional velocity, fluid density, and borehole size. A computer program has been written to merge all necessary logging data and to carry out the computation automatically. A solid elastic tool with various reduced effective radii and a rigid tool are included in the model. The usefulness of the Stoneley wave-derived ..delta..t shear to applications such as sanding prediction is illustrated for slow formations where the shear head wave is not observable in the borehole.

• Research Organization: Schlumberger Well Services, Houston, TX
• OSTI ID: 6621051
• Report Number(s): CONF-8406110-
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200 -- Natural Gas-- Reserves
Geology
& Exploration
99 GENERAL AND MISCELLANEOUS
990220 -- Computers
Computerized Models
& Computer Programs-- (1987-1989)
COMPUTER CODES
COMPUTERIZED SIMULATION
DENSITY
ELASTICITY
FLOW RATE
FLUIDS
GEOLOGIC DEPOSITS
GEOPHYSICS
ISOTROPY
MECHANICAL PROPERTIES
MINERAL RESOURCES
NATURAL GAS DEPOSITS
PETROLEUM DEPOSITS
PHYSICAL PROPERTIES
RESERVOIR FLUIDS
RESERVOIR ROCK
RESOURCES
SHEAR
SIMULATION
SONIC LOGGING
SOUND WAVES
TENSILE PROPERTIES
WELL LOGGING