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The Study Of Avo Inversion And Gas-bearing Identify Technology Method To Heterogeneous Reservoir

Posted on:2003-08-05Degree:MasterType:Thesis
Country:ChinaCandidate:D XuFull Text:PDF
GTID:2120360062486565Subject:Earth Exploration and Information Technology
Abstract/Summary:PDF Full Text Request
In this paper, author consider the combination of theory with practice especially .In the process of study, the AVO method technology and technology of seismic data process and the study of interpretation were combined .On the basis of extensive absorbing the advance technology inside and outside, the theory of generalized linear inversion AVO and non-linear AVO inversion and weighted stacking technology were discussed detailed to the characteristic of heterogeneous reservoir. Then, the forward and inversion of those methods were performed. The methods were realized directly inversion of the Possion's ratio from CDP gather and gas-bearing identify. By applied the late theory of AVO technology, after inputting the P wave section and S wave section, the P wave and S wave impedance were obtained by applying simulate anneal inversion and used the log as a constrain condition, eventually, obtain the elastic parameter u and X by P and S impedance. Then, the gas-bearing will be identified by u and X .By applying this method, the AVO combination inversion of prestack and post were realized. In addition, the integrate interpretation method for lithology and physics parameter of lithology and the trap of AVO are discussed in this paper also.The flow charts for those methods are presented in this paper, those programs for those method are completed in the FORTRAN and DELPHI language. After applying those program to Xinchang Hexingchang and Luodai and other survey, the better geology effect was obtained, it show that those method have the better utility and extensive develop foreground.
Keywords/Search Tags:AVO, possion's ratio, inversion, weighted stacking, elastic parameter
PDF Full Text Request
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