Data relay for casing mounted sensors, actuators and generators
Data relay system for instrument and controller attached to...
Data telemetry system for multi-conductor wirelines
Data transmission in pipeline systems
Data transmission system for downhole logging tools
Data-fusion receiver
Device and method for transmitting information by electromagneti
Device for providing an electrically insulated connection...
Digital hydraulic well control system
Direct switching modulation for electromagnetic borehole telemet
Directional signal and noise sensors for borehole...
Disposable electromagnetic signal repeater
Down hole transmission system
Downhole clock synchronization apparatus and methods for use...
Downhole communication
Downhole component with multiple transmission elements
Downhole data transmission
Downhole inductively coupled digital electronic system
Downhole instruments for well operations
Downhole power and communication system