Inventor
CHANG SHU-KONG
US22 patents
⚠️ This page may combine multiple inventors who share the name “CHANG SHU-KONG”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
SCHLUMBERGER TECHNOLOGY CORP
20 patentsUS6109372AAug 29, 2000
Rotary steerable well drilling system utilizing hydraulic servo-loop
SCHLUMBERGER TECHNOLOGY CORP252 citations98
US5077697ADec 31, 1991
Discrete-frequency multipole sonic logging methods and apparatus
SCHLUMBERGER TECHNOLOGY CORP129 citations98
US6373248B1Apr 16, 2002
Nuclear magnetic resonance logging with azimuthal resolution
SCHLUMBERGER TECHNOLOGY CORP72 citations96
US6366089B1Apr 2, 2002
Nuclear magnetic resonance logging with azimuthal resolution
SCHLUMBERGER TECHNOLOGY CORP56 citations96
US6255817B1Jul 3, 2001
Nuclear magnetic resonance logging with azimuthal resolution
SCHLUMBERGER TECHNOLOGY CORP66 citations96
US5977768ANov 2, 1999
Nuclear magnetic resonance logging with azimuthal resolution
SCHLUMBERGER TECHNOLOGY CORP83 citations96
US4698792AOct 6, 1987
Method and apparatus for acoustic dipole shear wave well logging
SCHLUMBERGER TECHNOLOGY CORP62 citations96
US5852587ADec 22, 1998
Method of and apparatus for sonic logging while drilling a borehole traversing an earth formation
SCHLUMBERGER TECHNOLOGY CORP117 citations95
US5331604AJul 19, 1994
Methods and apparatus for discrete-frequency tube-wave logging of boreholes
SCHLUMBERGER TECHNOLOGY CORP67 citations95
US5796677AAug 18, 1998
Method of sonic logging while drilling a borehole traversing an earth formation
SCHLUMBERGER TECHNOLOGY CORP85 citations94
US5594706AJan 14, 1997
Downhole processing of sonic waveform information
SCHLUMBERGER TECHNOLOGY CORP98 citations94
US7643374B2Jan 5, 2010
Slowness-frequency projection display and animation
SCHLUMBERGER TECHNOLOGY CORP19 citations92
US5753812AMay 19, 1998
Transducer for sonic logging-while-drilling
SCHLUMBERGER TECHNOLOGY CORP112 citations92
US5309404AMay 3, 1994
Receiver apparatus for use in logging while drilling
SCHLUMBERGER TECHNOLOGY CORP26 citations92
US5265067ANov 23, 1993
Methods and apparatus for simultaneous compressional, shear and Stoneley logging
SCHLUMBERGER TECHNOLOGY CORP55 citations92
US4951267AAug 21, 1990
Method and apparatus for multipole acoustic logging
SCHLUMBERGER TECHNOLOGY CORP84 citations91
US5923167AJul 13, 1999
Pulsed nuclear magnetism tool for formation evaluation while drilling
SCHLUMBERGER TECHNOLOGY CORP48 citations90
US4850450AJul 25, 1989
Logging tool housing with acoustic delay
SCHLUMBERGER TECHNOLOGY CORP41 citations90
US4703460AOct 27, 1987
Method and apparatus for acoustic dipole direct shear wave well logging
SCHLUMBERGER TECHNOLOGY CORP50 citations89
US7603238B2Oct 13, 2009
Analysis of time-series data using singularities
SCHLUMBERGER TECHNOLOGY CORP8 citations80