f Modelling air gun array performance specifications

Air gun arrays have been the preferred source for hydrocarbon exploration for nearly 25 years. One of the challenges over that period has been the computer simulation of the array signatures. The acoustic signal from an array of many air guns is sufficiently complex to thwart many early attempts at accurate modelling. As a result, it was not possible to predict the performance of an array under deteriorating conditions of operation such as the failure of specific guns. operating specifications were deduced from sparse information obtained from far field signature recordings and they carried the risk of being conservatively described without being comprehensive in coverage.