Patent ID: 9354345
Filing Date: 2016-05-31
CPC Classification: G01V

Claim Text:
1. A method for controlling a delay of an air-gun in an aquatic seismic source during an aquatic seismic survey, the method comprising: firing the air-gun with a delay time; receiving an attribute of the air-gun during the aquatic seismic survey, wherein the attribute is indicative of an asynchronization time of the air-gun; calculating, based on a time-delay algorithm that uses the attribute, the asynchronization time of the air-gun, wherein the asynchronization time is a time difference between (i) a time when the air-gun is desired to fire according to a nominally designed time and (ii) an actual time when the air-gun actually fires; determining whether the asynchronization time is within a given range; instructing a controller to (1) wait for a predetermined time before calculating again the asynchronization time of the air-gun if the asynchronization time is within the range, or (2) calculate an updated asynchronization time for the air-gun based on the attribute if the asynchronization time is not within the range; sending the updated asynchronization time to a gun controller of the air-gun for adjusting the delay time; and firing the air-gun using the adjusted delay time.