Hybrid well communication system
Identically programmed intelligent electrodes for use in...
Impedance-matched drilling telemetry system
Impedance-matched drilling telemetry system
Inductive coupler for well tools
Inductively-coupled system for receiving a run-in tool
Information transmitting apparatus using tube body
Insulated drill collar gap sub assembly for a toroidal coupled t
Laterally translatable data transmission apparatus
Logging device data dump probe
Logging or measurement while tripping
Logging sondes for use in boreholes
Logging while tripping with a modified tubular
Long range multiple point wireless control and monitoring system
Magnetic signalling in pipelines
Magnetic signalling in pipelines
Measurement while drilling electromagnetic telemetry system...
Measurement while drilling mud pulser control valve mechanism
Measuring tool for collecting down hole information and metering
Method and apparatus enhanced acoustic mud pulse telemetry