Remaining Oil Distribution And Potential Exploitation In High Water Cut Period Reservoir Of Shuanghexiqv Oilfield

The Chang6reservoir of Shuanghexiqv oilfield NO.6water injection satition of Yongning production plant is selected as a researching aim.The reservoir has been keep producting for almost14years from May2000,which means the development of oilfield is now in the High water cut stage with time lapse,the condition of underground fluid and remaining oil distribution are more complicated, while the exploitation effect getting worse and the development getting more difficult. In order to improve the recovery efficiency further and the oilfield could develop sustainable and efficient.We need to do a in-depth research on regularities of remaining oil distribution and its influencing factors to realize how the potential exploitation work should be done, which has important implications in production adjustment and Improvement of the ultimate recovery.With a comprehensively apply of the geology, logging and reservoir dynamic data, and the theory guidance of sedimentology, well log geology, development geology, reservoir engineering, Firs of all, make a comprehensive and meticulous research on reservoir geological characteristics after small layer contrast of Chang6reservoir, On this basis, descripte the reservoir comprehensivly and creat structure model and property model by Petrel, make numerical simulation studies of the target strata and production history matching by Eclipsse, then Combined with development status and production performance analysis to make a series of reasonable schemes on remaining oil potential exploitation, to realize the efficient development in the study area.Through the research, the original oil reserve in place is659.1×104t while the calculated volume is639.94×104t, the reserve volume is calculated with Petrel showing the matching accuracy degree is so high that the error is only2.9%. It is demonstrated that the geological model could meet content of the research of numerical simulation and remaining oil distribution. While the well accumulation history of both liquid and oil match is also very precise and the errors are all less than5%. So it is demonstrated that simulation in this area is fit for anticipating the remaining oil distribution. Fanally, make rational calculation for variese schemes and integrate all the schemes into one whole approachto after all the research on exploitation technology, thereby giving the guide to the potential tapping exploitation in future.