Distinguishing true basement from dikes and sills encountered in
Down hole apparatus for sensing and storing values of physical p
Down hole method for determination of formation properties
Down hole power conversion means for fully utilizing batteries
Down hole reservoir fluid sampler
Down hole steam quality measurement
Down hole tool for determination of formation properties
Downhole cable tension measuring apparatus
Downhole depth correlation
Downhole fluid property measurement tool
Downhole force measuring device
Downhole formation pump
Downhole gravity tool
Downhole inspection system
Downhole measurements using very short fractures
Downhole memory gauge protection system
Downhole penetrometer
Downhole pressure and/or temperature gauges
Downhole pressure gauge converter
Downhole pressure measurements of drilling mud