Measuring and transmitting apparatus for use in a drill string
Measuring casing coupler apparatus
Measuring device and drilling device for deep drillings
Measuring device for detecting a body moving in relation to...
Measuring properties of low permeability formations
Measuring torque and hook load during drilling
Measuring while drilling apparatus mud pressure signal valve
Measuring while drilling tool
Measuring while drilling tool
Mechanical actuator for a downhole tool
Mechanical actuator with electronic adjustment
Mechanical anchor setting system
Mechanical and fluid jet drilling method and apparatus
Mechanical bi-directional isolation valve
Mechanical directional drilling jar
Mechanical drive packer
Mechanical expansion system
Mechanical hammer
Mechanical jar
Mechanical jarring devices for use in drilling