Abstract：Comparing with oil,the gas in formation has clear seismic characters of absorbing high frequency component,decreasing velocity.which made detection of gas reservoir directly by seisurology more easily realize.In a process of using multiple seismic parameters to directly detect gas reservoir,the key factor is distinguishing the reasonableness of models being made-up(that is space regularity of sample models and parametric model),so that the distribution of selected samples in high-dimensional space is more concernel by the people.Application of non-linear mapping algorithm can analyze and study the distribution. The paper through taking errors function equivalent to general potential energy of elastic network node in high-dimensional space having been constrained to 2-D place,then the normalization processing of data and multi-iteration using Newton's method are carried out,which results in N pairs of coordinate that minimized the errors function,being as non-linear mapping result in 2-D plane.The application to real data achieved some effects after development of applied software of non-linear mapping algorithm.
韩文功, 王金铎, 于建国, 王兴谋. 非线性映照判别模型实现气藏地震检测[J]. 石油地球物理勘探, 2002, 37(5): 524-529.
Han Wengong, Wang Jinduo, Yu Jianguo, Wang Xingmou. Realizing seismic detection of gas reservoir by using non-linear mapping to distinguish model. OGP, 2002, 37(5): 524-529.
