Application of instantaneous wavelet absorption analysis technology:case study on offshore gas detection in China

Analysis of twinkling fluctuation phenomena of cored wires;

Various of instant harmonic current detecting methods which have already been existed at present are analyzed and compared , aiming at the shortcomings of these methods , a new instant harmonic current detecting method is proposed , and the rightness of this method is analyzed theoretically , the feasibility of this method is demonstrated by the results of computer simulation.

Based on the post-stack seismic processing,channel saM bodies were detected by coherenee and attribute extraction analysis,then techniques of transient wavelet absorption and the attribute ex- traction analysis were used to verify gas-containing probability in the detected sand bodies,and the false bright spots cause.