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The Application Of AVO Inversion In Carbonate Rocks In The Right Bank Of Amu Darya

Posted on:2011-11-21Degree:MasterType:Thesis
Country:ChinaCandidate:J MaFull Text:PDF
GTID:2120360302492857Subject:Earth Exploration and Information Technology
Abstract/Summary:PDF Full Text Request
With the rapid development of computer technology, seismic exploration technology has become the world's primary means to find oil and gas resources. Using the relationship of seismic reflection amplitude with offset by detecting hydrocarbon planar distribution is a new seismic exploration techniques developed in recent 20 years. AVO inversion is to use this amplitude versus offset variation of the nature of the fluid within the reservoir estimates and forecast oil and gas. As the AVO inversion is to use pre-stack gathers CRP, extract hidden information in a variety of seismic lithologic parameters, more realistic and objective response to the various characteristics of the underground reservoir. Currently, AVO inversion already have a mature acquisition, processing, interpretation, and analysis mode, the detection of hydrocarbon reservoir and its gradual transition from qualitative research to quantitative description. In recent year, the avo seg the annual meeting in technology as a technology topics for discussion, demonstrate that the technology is very broad application prospects.The right bank of the Amu Darya in Turkmenistan favorable three-dimensional zone of carbonate reservoir development area is mainly reef point. Biological point of reef in the seismic reflection profile characteristics are as Qionglu drape shape, relatively messy internal reflection character, continuity is relatively poor. Carbonate rocks due to favorable distribution of fluid within the complex, in order to further implement the study area, carbonate fluid distribution, the implementation of the distribution of oil and gas, exploration and deployment for the next step well deployment views. In this paper, problems in the study area by AVO inversion techniques in the study area in the AVO plane distribution of property were studied, specifically the following aspects were studied:1.Searches the massive domestic and foreign literature, and further learning and mastering the principles of AVO inversion and the development process, deepened the theoretical understanding of AVO inversion,study the geological implications of AVO parameters and AVO anomaly classification of basic knowledge were summarized. 2. The seismic, geology and logging data was analyzed and compared of the study area,collect the geological characteristics and sedimentary background material, Analysis electrical properties, physical properties of Carbonate, paste crag, salty crag and organic reef in the area, Builds the rationale for the next step practical application.3. Joint stacking velocity, the CRP gathers in the study area, doing part of superposition parameters test of the CRP gathers,and based on the tests of the study area doing some part of the stack gathers, for the follow-up of elastic impedance inversion to provide the appropriate angle gather information.4. Through the CRP gathers of the study area is calculated a variety of seismic attributes section, and Through longitudinal wave impedance index of reflection and transversal wave impedance index of reflection connection, poisson's ratio and Lamey coefficient connection carried out analysis and forecasting the anomalies fluid of the study area.
Keywords/Search Tags:Prestack inversion, CRP gathers, AVO attribute analysis, Attribute intersection analysis
PDF Full Text Request
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