Patent ID: 9581714
Date: 2017-02-28
CPC Classifications: G01V

Claim:
1. A method for performing a seismic survey, comprising: towing a seismic spread comprising two outer deflectors and two outer streamers in a substantially straight course in a first direction for a predefined distance; after completing towing along a first distance, traveling through a turn wherein the deflectors each travel along a predefined curved path for a radial turn of approximately 180 degrees; after the turn, traveling along a substantially straight course that is substantially parallel to the first course, and towing in an opposite direction to the first direction; and predefining a track for each deflector to travel and, using a control system, automatically adjusting a position of the deflector to maintain the deflector on the predefined track wherein the track of each deflector being separated by a first lateral distance outside of the turn, and being separated by a second lateral distance that is smaller than the first lateral distance when in the turn.