关键词: 灰色系统, 储盖组合, 精细评价, 指标, 分析方法, 应用实例, 效果

Abstract: By the use of logging,coring,production test and concerning geology data to match,fit and extract parameters,the eigenvalue as well as its accuracy and distinguishability were statistically analyzed,and the formation lithology, physical properties,oil-bearing property and cap quality were evaluated.A cording to the characteristics of Donghe sandstone in the Silurian,Devonian and Carboniferous formations in Tazhong Oilfield,the parameters,standards and weight coefficients for fine evaluation about reservoir-cap combination are presented on the basis of the gray system.A method for the fine evaluation and the handling examples were given.In accordance to the integrated interpretation results of some oilfields,such as Tarim,Liaohe,north China,Er-lian,Yan-chang,the reservoir-cap strata parameters,driving pressure,breaking pressure in main intended zones were calculated.Meanwhile,the formation lithology,physical properties,oil-bearing property and cap quality were analyzed, and the relationship between reservoir strata and cap strata is interpreted.The results may be the basis for prospecting various reservoirs.

Key words: gray system, reservoir-cap combination, fine evaluation, standards, analysis method, application examples, effect