Deep-well thermal flowmeter
Density neutron self-consistent caliper
Depth measurement of slickline
Depth referencing system for a borehole gravimetry system
Detection of drilling oil filtrate invasion in a core
Detection of fracturing events using derivatives of fracturing p
Determination of drill bit rate of penetration from surface meas
Determination of fracturing fluid loss rate from pressure declin
Determination of oil shale yield from well log data
Determination of steam quality in thermal injection wells
Determining location and composition of liquid contaminants in g
Determining stresses and length changes in well production tubin
Device and method for determining the orientation of fractures i
Device for blocking at a given torque a rotating machine driven
Device for measuring properties of underground water and method
Device for measuring stresses transmitted by a shaft, in particu
Device for measuring the flow of fluid in a well
Device for simultaneously measuring various parameters of the dr
Device for surveying subterranean spaces or caverns
Digital mineral logging system