Polish rod temperature sensing system and rod stroking control
Polished rod load transducer
Pore pressure formation evaluation while drilling
Porosity estimation method in carbonate rock
Portable tester for downhole motors
Portable well analyzer
Power control system for subsurface formation testing apparatus
Practical methods to estimate horizontal and vertical...
Precision measuring system for down-hole production logging oil
Preparation unit for a drilling mud testing system
Pressure actuator switch
Pressure and temperature compensation means for a downhole force
Pressure communicating, fluid isolating interface
Pressure controlled test valve system for offshore wells
Pressure core barrel flushing system
Pressure gauge
Pressure interference testing for estimating hydraulic...
Pressure loss identifying apparatus and method for a drilling mu
Pressure measurement system
Pressure monitoring technique and applications involving wells