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Geophysical Joint Inversion For Reservoir Delineation Of Northern Erdos

Posted on:2006-12-23Degree:DoctorType:Dissertation
Country:ChinaCandidate:C Q YuFull Text:PDF
GTID:1100360155951278Subject:Earth Exploration and Information Technology
Abstract/Summary:PDF Full Text Request
The paper studied primarily the technology and the method on the geophysical joint inversion by the geophysics data,Elaborated the geophysical inversion foundation method research, the seismic after with emphasis has guaranteed a technical, the elastic parameter inversion method and folds the inversion technology. The paper take the China second sedimentary basin –Erdos basin seismic exploration difficult problem as the research object,Has developed the seismic inversion method technology and the application domain. Erdos basin is our country gas reserves most areas and our country transport the natural gas from the west to the east most powerful production base, Has the reservoir wave impedance difference to be small but the cap rock to clamp the strong reflection coal bed and so on not to favor the seismic exploration the characteristic. Launches the seismic in view of these difficult problems to process the new method there search,Will certainly to promote the seismic exploration method progress,And enhances the oil gas exploration the economic efficiency. The paper innovation is mainly manifests in following several aspects: 1. In the wave impedance cannot the effective discrimination reservoir and in the adjacent formation difficult situation,Established this local lithological character, the nature, contained the disposition and the elastic parameter relationship,And explicitly pointed out,The poisson's ratio is the effective parameter which the distinction contains was mad,In hole fluid type control poisson's ratio. The oil well logging and the seismic correlation indicated the reservoir wave impedance and the porosity have the very good relevance,And contains with the penetration coefficient was mad the degree of saturation has the good relevance,But misses with the shale content relevance. This conclusion showed may (joint inversion through the seismic inversion to forecast in particular) the reservoir porosity and contains the disposition. 2. Clamps the strong reflection coal bed in view of the home court caprock to cause the in-depth transmission energy greatly for the difficulty which weakens,This article studied for the first time applies the transmission to compensate the technology and the union folds sometime ago between displaces the image formation technology,Further enhanced the in-depth seismic wave field to nurture the divine or pristine element within oneself the processing level.(Folded foreland for the home court deep reservoir lithological character analysis to shake wave field attribute research) to build the reliable foundation. 3. Has studied the elastic impedance and the P wave and the S wave joint inversion...
Keywords/Search Tags:geophysical inversion, guarantees a processing, elastic inversion, AVO technology, seismic joint inversion, reservoir forecast, sedimentary facies forecast, qualitysynthetic evaluation
PDF Full Text Request
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