Method and device for dynamic control of delays in gun controller

A computing device for controlling a delay of an air-gun in an aquatic seismic source during an aquatic seismic survey, the computing device comprising:

• an interface for receiving an attribute of the air-gun during the aquatic seismic survey, wherein the attribute is obtained after firing the air-gun with a delay time and the attribute is indicative of an asynchronization time of the air-gun;
• and
• a processor connected to the interface and configured to,
• calculate, 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;
• determine whether the asynchronization time is within a given range;
• instruct the computing device to (1) wait for a predetermined time before calculating again the asynchronization time of the air-gun if the asynchronization time is within the given range, or (2) calculate an updated asynchronization time for the air-gun based on the attribute if the asynchronization time is not within the given range;
• and
• send the updated asynchronization time to a gun controller of the air-gun for adjusting the delay time so that the gun controller fires the air-gun using the adjusted delay time.

A computer readable media non-transitorily storing executable codes which when executed on a computer make the computer perform 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 given range, or (2) calculate an updated asynchronization time for the air-gun based on the attribute if the asynchronization time is not within the given range;
• and
• sending the updated asynchronization time to a gun controller of the air-gun for adjusting the delay time so that the gun controller fires the air-gun using the adjusted delay time.