【作者】 贾方；

【导师】 方德庆； 马世忠；

【作者基本信息】 东北石油大学 ， 矿产普查与勘探， 2011， 硕士

【摘要】 目前国内大部分油田已进入开发中后期,随着开发的不断深入,用合理有效的方法寻找并挖潜剩余油显得尤为重要。开展储层精细描述、单砂体内部建筑结构及内部流动单元研究,加深油田地质情况认识,为寻找剩余油提供依据。大庆油田北一区断东葡Ⅰ2曲流河沉积储层,发育有大型复合河道砂体,通过可分性研究,可将葡Ⅰ2小层进一步划分成葡Ⅰ21、葡Ⅰ22两个河流期沉积时间单元,葡Ⅰ21沉积时间单元发育的是曲流河砂体及大型高弯曲分流河道砂体,葡Ⅰ2：沉积时间单元发育泛滥平原相的高弯曲的大型复合曲流带砂体。曲流河道在侧向加积的过程中形成薄夹层,对单砂体内部4级界面侧积薄夹层的建筑结构研究,包括4级侧积界面倾向、倾角、结构体规模和夹层空间分布模式。为进入高含水期油田的开发揭示出了更为复杂的储层内部结构,反映出非常强的储层非均质性,结合目的层剩余油的研究,为总结出储层内剩余油的分布特征,为持续、高效开发油田,提高采收率具有重要的现实意义。更多还原

【Abstract】 At present the domestic majority of oil fields entered the developed part, with de velopment unceasing thoroughly, seeks for and taps latent potentialities the remaining oil with the reasonable effective method appears especially important.The fine descripti on of reservoir,the internal construction structure of the single sand and the internal m obile unit research, the deepening oil field geology situation knew provide the basis to seek for the remaining oil.The PⅠ2 of beiyi area of daqing oil field is meandering river reservoir,developin g with large scale complex channel sand.Through thoroughly investigate, PⅠ2 of Beiy i area was subdivided into two sedimentary units(PⅠ21, PⅠ22).The sedimentary unit of PⅠ21 develop meandering river sand and large scale and high bending distributary channel. The sedimentary unit of PⅠ22 develop high bending with large compound meandering sand body of flood plain facies.Monosandstone is formed with the lateral deposit of meandering river. The research of the architecture of point bar including te ndency and dip and scale and distribution space.Entered the high watery time, the mul tiple well pattern encryption three extraction stage after the oil field to promulgate the more complex reservoir internal structure, reflected very strong reservoir anisotropism, the union goal level remaining oil’s research, to summarize in the reservoir. The outc ome of this text provided full geological references for exploration of remaining oil in the point bar of meandering stream channel and had geological direction to selection of producing methods.更多还原