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《OIL & GAS GEOLOGY》 1997-03
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RESERVOIR HETEROGENEITY MODEL OF THE SECOND OIL BEARING SET OF THE THIRD MEMBER OF SHAHEJIE FORMATION IN LENGDONG REGION

Lin Chengyan\ \ Xin Quanlin\ \ Liu Zerong (Petroleum University,Doying,Shandong) Zhang Xueru (Liaohe Petroleum Exploration Bureau,Panjin,Liaoning)  
According to the variations in permeability and grain size mid value obtained from rook cores and well log,the second oil bearing set of the third member of Shahejie Formation in Lendong region,western Liaohe Depression could be divided into positive rhythm(A),reverse rhythm(B),composite rhythm(C),homogeneous rhythm(D) 4 heterogeneous models and 20 sub type models.Within 4 sedimentary microfacies,models A,C,D hold the highest percentage in Ⅳ,Ⅱ,Ⅲ and Ⅰ facies respectively,whereas model B shows little difference in microfacies. From facies Ⅰ to facies Ⅳ,the thickness of sand gravel stone decreases,the content of argillaceous rock increases,grain size mid value gets smaller and the permeability becomes bigger.The variation coefficient of permeability and heterogeneity increases from facies Ⅰ to facies Ⅲ,but that of facies Ⅳ is the smallest.
【Fund】: 中国石油天然气总公司八五重点攻关项目
【CateGory Index】: P618.130.2
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