Focussing ultrasound transducer
Folded hydrophone array for narrow marine vehicles
Folded sagnac sensor array
Folded sagnac sensor array
Folded sagnac sensor array
Folded shell projector (FSP)
Force or pressure feedback control for seismic vibrators
Forced acoustic dipole and forced acoustic multipole array...
Formation absorption seismic method
Formation fracture detection using instantaneous characteristics
Formation of sonar channels by charge-coupled devices
Forward looking echosounder
Forward-looking sonar and underwater image display system
Forward-looking sonar and underwater image display system
Fracture clusters identification
Fracture clusters identification
Fracture detection logging tool
Fracture investigation by resonance sweeping technique
Free flooding hydrophone mounting
Free-floating altitude stabilized system