现代地质Issue(1)：119-130,12.
济阳坳陷特低渗透油藏地质多因素综合定量分类评价
Comprehensively Quantitative Reservoir Classification and Evaluation Based on Geological Multivariate Analysis of Extra-low Permeability Reservoirs in Jiyang Depression
摘要
Abstract
On the basis of quantitative characterization of development effect and geological features of extra-low permeability reservoirs,the main controlling geology factors of development effect are analyzed.And the grey correlation analysis is used to classify and evaluate the extra-low permeability reservoirs in Jiyang Depression comprehensively and quantitatively together with geological multivariate analysis.Finally,it forms a comprehen-sively quantitative classification and evaluation method based on geological multivariate analysis for extra-low permeability reservoir.The key technologies of this method are the use of development effect to characterize comprehensive feature of extra-low permeability reservoir,the application of grey correlation analysis,and research transiting from single well to blocks.The result shows that sedimentary facies of extra-low permeability reservoirs in Jiyang Depression are mainly beach-bar sands,turbidites and sandy conglomerates.And extra-low permeability reservoirs have the geological characteristics of great burial depth,fine and uniform size,slim pore throat,single-layer thin thickness and scattered distribution,low ratio reserve abundance and poor fluidity.The item of cumulative production deviation is defined to characterize development effect,and it is used to reflect comprehensive features of extra-low permeability reservoirs,and it’s main controlling geological factors are thick-ness layer ratio of oil layer,thickness layer ratio of sandstone,mean grain size,reservoir middle-depth,perme-ability,porosity and ratio reserve abundance.Extra-low permeability reservoirs in Jiyang Depression can be gen-erally divided into 3 different types based on comprehensively quantitative reservoir classification and evaluation. As for typeⅠ,the comprehensive evaluation score is greater than 0. 6 and cumulative production deviation is greater than 4,500,and it has the best development effect.The comprehensive evaluation score of typeⅡran-ges from 0. 4 to 0. 6 and cumulative production deviation varies between -2,500 and 4,500,and it has medi-um development effect.The comprehensive evaluation score of type Ⅲis less than 0. 4 and cumulative produc-tion deviation is less than -2,500,and its development effect is worse.By making full use of development data in the study area to test the result,it is found that classification and evaluation result is in accordance with actu-al production.TypeⅠand typeⅡof extra-low permeability reservoirs should be the preferential object for devel-opment and production of vertical well and horizon well at present.关键词
特低渗透油藏/地质特征/开发效果/主控因素/灰色关联分析/分类评价/济阳坳陷Key words
extra-low permeability reservoir/geological feature/development effect/main controlling factor/grey correlation analysis/classification and evaluation/Jiyang Depression分类
能源科技引用本文复制引用
操应长,杨田,王艳忠,宋丙慧,郭迎春,孙渡..济阳坳陷特低渗透油藏地质多因素综合定量分类评价[J].现代地质,2015,(1):119-130,12.基金项目
国家科技重大专项项目（2011 ZX05009－003）；中央高校基本科研业务费专项资金资助项目（14CX06070A）；国家自然科学基金、石油化工联合基金重点项目（U1262203）。 （）
