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Division and recognition of architecture interfaces of fan-delta front reservoir: taking Dujiatai reservoir of Jin-99 block in Huanxiling Oilfield,Liaohe Basin as an example
Pages: 7-13+4
Year: Issue:  1
Journal: Journal of Xi'an Petroleum Institute(Natural Scien

Keyword:  fan-delta frontreservoir architecturearchitecture interfacewell logging responseJin-99 blockHuanxiling oilfield;
Abstract: In order to find out the architecture characteristics and distribution mode of fan-delta front reservoirs,taking Dujiatai reservoir of Jin-99 block in Huanxiling Oilfield of Liaohe Basin as an example,the characteristics of the architecture units of fan-delta front reservoirs are analyzed,the grading system of architecture interfaces is proposed and the qualitative identification standard and the quantitative determination mode for the architecture interfaces of single sandbody are established according to core and well logging data based on reservoir architecture theory and high-resolution sequence stratigraphy. The research results show that the third and the fourth grade architecture interfaces in fan-delta front reservoirs are main seepage barrier in the single sandbody,and they control the formation and distribution of remaining oil. The fourth grade architecture interfaces mainly include the flood shale,the argillaceous layers on the top of braided river channel and debouch bar. The third grade architecture interfaces mainly include the fine grained sediment on the top of sand-body and the lag deposit in the bottom of single braided river channel. Both of them have the distinct logging response characteristics.
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