Quantitative source testing ? a comparison between an 60?000lbs vibrator and an 80?000lbs vibrator

Abstract

The Quantitative Quality Analysis (QQA) method provides an alternative to subjective analysis of source tests by using analytical measurements on the seismic signal. This is achieved by measuring a number of wavelet attributes of the seismic signal to determine seismic quality. This provides an objective method to determine quality. The QQA method is demonstrated on a vibratory source test where a 60?000lbs M26 vibrator is compared with an 80?000lbs M30 vibrator on a prospect in Australia. The combination of these attributes show the QQA method can clearly differentiate between a 60?000lbs and 80?000lbs vibratory source in a manner which is consistent with expert subjective analysis.