Two Types Of Oil Reservoir Characteristics And Residual Oil Distribution In The East Block Of The South First Area Of Daqing Oilfield

South East blocks into high water cut stage,the remaining oil distribution is more complex than before,the underground situation more changeable,the development of a more serious contradiction.At the same time,it is necessary to enter the two stage of production,to find out the remaining oil in this period,and to establish a reasonable method of controlling the liquid to control the rising speed of water.It is the main means to maintain the output,and it is also an important measure to maintain the healthy development of the block.This paper mainly focuses on the fine reservoir description and residual oil distribution in the east block of the south one area.The research includes the basic profile of the block and the research of each mining stage,the study on the characteristics of the sedimentary characteristics and reservoir,the characteristics of the distribution of the remaining oil and the main distribution layers.In the course of the study,the main work is done in several aspects: first,collecting the fine small layer data of the block,the data of the perforation arrangement,and so on.The two is to sum up the sedimentary facies,heterogeneity and sand body connectivity of the block by using the data.The three is to establish the geological model of the block by using the digital model software,to carry out the numerical simulation and to draw the remaining oil.Distribution map;Four main achievements have been obtained in this paper: one is the understanding of the tectonic reservoir in the whole block,and the research area is one of the well developed blocks in the two types of oil reservoirs,rich in oil and gas resources,not only with a unified pressure system,but also with a unified oil and water contact surface,and the bottom water and the edge water are inactive.The two is to block the lithology is mainly sandstone and argillaceous sandstone has a certain amount of oil shale interlayer.The three is the high heterogeneity of the rhythmic feature of the development of two main rhythm.Four blocks were developed two subfacies mainly developed 4 types of sand body.The four is the remaining oil distribution of block characteristics for imperfect injection production of remaining oil and well control for residual oil and residual oil at the top of thick oil layer.