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The Application Of Seismic Inversion Technology In Subtle Traps

Posted on:2011-06-20Degree:MasterType:Thesis
Country:ChinaCandidate:P P LiFull Text:PDF
GTID:2120360302492658Subject:Mineral prospecting and exploration
Abstract/Summary:PDF Full Text Request
In the higher degree of exploration basin, with oil and gas exploration and development deepening, the exploration of structural traps has been slow out of the mainstream trend, of which instead are non-structural traps, look for subtle traps exploration target.The key of identification and description of s lithosomic bodies is lithologic and stratigraphic based exploration of subtle traps. Seismic Inversion Technology to improve the interpretation of geophysical data of conventional geological resolution, and to varying degrees, to improve the level of the reservoir parameters can be identified. Under the guidance of the depositional model, can effectively identify reservoir type, distribution, geometry and configuration of relations with source, reservoir, and cover; provide the scientific basis for exploration of subtle traps.On the most commonly used seismic inversion software and inversion methods, the Paper has a comprehensive analysis. The tow study areas are Yingtai oil field on central depression belt of the Songliao basin and Hainan area on the structural belt of Haiwaihe-Yuedong. Based on sequence stratigraphic framework and depositional systems analysis, under the guidance of the depositional model, use the InverTrace-Constrained Sparse Spike Inversion module of Jason software, carried out seismic inversion and reservoir horizontal prediction research for the study areas, provide a favorable basis for reservoir distribution and favorable target prediction.Above the nose like structure of Yingtai oil field, developing EW-trending and nearly north and south small-scale faults.Qingshankou one and two oil bear formations developing delta front sand, and the delta lobes come from different source area converge here. The sand distribution on the impedance inversion profiles corresponds well with the seismic profiles. Area for further exploration should focus on the construction - lithologic reservoir. From the idea of search for structure -lithologic traps, we recommend 4 wells in the study area.Through carried out seismic inversion on the Dongying oil bear formations of Haiwaihe-Yuedong, and combined the research of sequence and deposition, predicted two favorable exploration areas in the study area, and identify lithologic traps type in the different favorable areas, determine a favorable exploration target.
Keywords/Search Tags:seismic inversion, subtle trap, reservoir
PDF Full Text Request
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