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The Annotation and Application of Energy Half-time Attribute
- Publisher: European Association of Geoscientists & Engineers
- Source: Conference Proceedings, 78th EAGE Conference and Exhibition 2016, May 2016, Volume 2016, p.1 - 5
Abstract
Energy half-time, coherent, RMS amplitude and dominant frequency attributes are common seismic attributes in seismic data interpretation and reservoir prediction now. However, the essential meaning of energy half-time has seldom been concerned. The article explains energy half-time in detail through formula, model test and real application. The result possesses guiding effects on practical production. The studies show that: 1) Energy half-time reflects relative change of energy in analysis time window. 2) The preferred size of analysis time window is close to the length of wavelet. 3) The midpoint in falling edge of energy half-time corresponds to point of interface. It’s the sign which separates reservoir and surrounding rock. 4) Compared with energy half-time calculated directly, center-of-mass method is smoother and better for low S/N data. 5) Energy half-time can also identify weak signal preferably.