CAJ | 학술논문

为深入研究致密砂岩储层的非均质性，利用钻井岩心资料、测井资料和测试分析资料，对鄂尔多斯盆地高桥地区上古生界致密砂岩储层的非均质性进行了深入分析。结果表明，研究区山西组-下石盒子组储集砂体的非均质性与沉积作用关系密切，垂向加积作用导致储集砂体物性在垂向上表现为规律不明显的正韵律或突变正韵律；侧积作用导致储集砂体物性在垂向上表现为强烈的正韵律；前积作用导致储集砂体物性在垂向上表现为规律明显的反韵律。漫流沉积作用导致储集砂体物性在垂向上表现为变化不大或略微反韵律。从层内非均质性上看，盒8段和山西组储层均具有较强的非均质性。其中山2段的储层非均质性较山1段的强，盒8下的储层非均质性较盒8上的强。4个亚层中属盒8上的均质性最好。从层间非均质性上看：不同层位差异较大。从平面非均质性上看，高桥地区盒8段和山西组储层在平面上不同地区表现出较强的非均质性。
위심입연구치밀사암저층적비균질성，이용찬정암심자료、측정자료화측시분석자료，대악이다사분지고교지구상고생계치밀사암저층적비균질성진행료심입분석。결과표명，연구구산서조-하석합자조저집사체적비균질성여침적작용관계밀절，수향가적작용도치저집사체물성재수향상표현위규률불명현적정운률혹돌변정운률；측적작용도치저집사체물성재수향상표현위강렬적정운률；전적작용도치저집사체물성재수향상표현위규률명현적반운률。만류침적작용도치저집사체물성재수향상표현위변화불대혹략미반운률。종층내비균질성상간，합8단화산서조저층균구유교강적비균질성。기중산2단적저층비균질성교산1단적강，합8하적저층비균질성교합8상적강。4개아층중속합8상적균질성최호。종층간비균질성상간：불동층위차이교대。종평면비균질성상간，고교지구합8단화산서조저층재평면상불동지구표현출교강적비균질성。
The heterogeneity characteristics of the Paleozoic tight sandstone reservoirs in Gaoqiao area of Ordos Basin are studied in detail in this paper by using core data ,logging data ,and test data .The results show that there is a close rela-tionship between heterogeneity and sedimentation of the Shanxi Formation and Xiashihezi Formation sandbodies .The sandbodies formed by vertical accretion show vertical positive rhythm or flanges positive rhythm with no obvious trend .In contrast,those sandbodies formed by lateral accretion show strong vertical positive rhythm .Sandbodies formed by progra-dation have apparent vertical anti-rhythm.Sandbodies of overland flow deposition display little change or a slight vertical counter-rhythm.He8 and Shanxi Fm reservoirs show strong intralayer heterogeneity .The heterogeneity of Shan2 segment is stronger than that of Shan1,while the heterogeneity of lower He8 segment is stronger than that of upper He8 segment. Among these four sub-layers,the upper He8 segment is most homogeneous .Interlayer heterogeneity significantly varies a-mong different layers .He8 segment and Shanxi Formation also show strong lateral reservoir heterogeneity in Gaoqiao area .