Method and system for streamer depth control

摘要

Depth and tilt control systems for geophysical sensor streamers and methods of use are discussed. Such systems may include a plurality of tilt sensors disposed at spaced apart locations along the geophysical sensor streamer, each tilt sensor having a first tilt sensing element arranged to measure tilt of the geophysical sensor streamer proximate the associated spaced apart location, a plurality of LFD control devices, each disposed proximate one of the tilt sensors along the geophysical sensor streamer, and a plurality of microcontrollers, each microcontroller in signal communication with at least one of the LFD control devices and its associated tilt sensor, wherein each microcontroller is capable of utilizing the tilt measured by the associated tilt sensor to selectively operate the associated LFD control device to cause the geophysical sensor streamer to align with a selected depth profile.

主权项

1. A method for depth and tilt control of a geophysical sensor streamer, comprising:
towing the geophysical sensor streamer in a body of water; measuring tilt along the longitudinal dimension of the geophysical sensor streamer with tilt sensors at a plurality of spaced apart locations along the geophysical sensor streamer; communicating the tilt measurements from the plurality of tilt sensors to a controller, the controller using the tilt measurements to cause deflecting the geophysical sensor streamer proximate each of the tilt measurements to align the geophysical sensor streamer along a selected depth profile; deflecting the geophysical sensor streamer in the vertical plane proximate at least one spaced apart location in response to the measured tilt at that location to cause the geophysical sensor streamer to align with a selected depth profile.