Depth control in coiled tubing operations
Depth correction
Depth measurement of slickline
Derrick assembly capable of conveying pipe sections between...
Derrick for drilling
Derrick mounted apparatus for the manipulation of pipe
Derrick tilting system
Derrickless tubular servicing system and method
Desanding apparatus and system
Design and control of multiple tubing string well systems
Design of wear compensated roller cone drill bits
Designing drilling pattern for excavating rock cavern
Designing drilling pattern for excavating rock cavern
Destruction process for rigid thermal insulation installed...
Detachable anchor bolt mixing head for use in mine roof...
Detachable apparatus for preventing differential pressure...
Detachable drill bit for impact drilling
Detachable shoe plates for large diameter drill bits
Detachable torque transmitting tool joint
Detecting acoustic signals from a well system