System for recovery of petroleum from petroleum impregnated medi
Temperature compensated strain measurement
Temperature logging while drilling
Testing method and apparatus ground liquefaction and dynamic...
Testing of ram and annular blowout preventers
Thermal well-test method
Tool assembly and monitoring applications using same
Tool for measuring pressure in an oil well
Tool for testing earth formations in boreholes
Tool for testing earth formations in boreholes
Tool for testing earth formations in boreholes
Tool for testing earth formations in boreholes
Torque swivel and method of using same
Torque transmitting and indicating device for well drilling appa
Traction apparatus
Tubing end locating apparatus for wellbores
Tubing expansion
Tubing plug apparatus for performing down-hole pressure tests
Ultrasonic cylindrical resonator to facilitate bubble point...
Ultrasonic inspection apparatus for vertical members