PULSED MARINE SOURCE

摘要

Systems and methods for generating seismic signal include using a conventional airgun array and specifically detunes the timing of the array so individual airguns are not fired at the same time and with their interacting bubbles form a unique composite pulse that can be separated by various means out of a seismic record to form the shotpoint. The advantage of this approach is a lower overall noise envelope in the water minimizing impact on the marine mammals and it allows multiple arrays to be fired in close spatial and timing proximity with minimal to no interference.

主权项

1. A method for acquiring seismic data comprising:
a) initiating firing of individual seismic sources at start of a shot point, wherein two or more of the plurality of seismic sources fire asynchronously in a selected sequence to generate a coded seismic signal; b) collecting seismic data from the coded seismic signal; c) inverting the seismic data; and d) generating an output trace via computing device using the inverted seismic data.