The Architecture Research Of The Meandering River In The Horizontal Well Of The Beiyi Area

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.