Feasibility Study Of A Class Of Three Oil Recovery In The Transitional Zone Of The North Development Zone

The Oilfield Polymer Flooding Oil Technology in high water cut stage, the tertiary oil recovery technology faces new challenges, in Xingbei development area of pure oil a reservoir of tertiary oil recovery potential decreased year by year, three types of reservoirs in tertiary recovery test is still carried out. Transitional zone a, two with a kind of reservoir development and pure oil similar, Pu I 1 ~ 3 reservoir movable geological reserves of 1909 million tons. The water drive development adjustment and increasing difficulty. So it is necessary to carry out the transitional zone of a reservoir three times on the feasibility of production and lay a solid foundation for the continuous stable production of reserve base.This paper analyzes the major reservoirs in Xingbei development area transition zone three production feasibility, from the reservoir development, storage characteristics, determine the polymer flooding injection parameters, well spacing, well network deployment feasibility elaboration, and according to the actual economic benefits of selected optimal well distribution plan. By well seismic combination of transition with a kind of reservoir sand bodies are depicted in detail, according to the transition zone has deployed well reservoir development and production situation of, the implementation of the Pu I 1 ~ 3 oil remaining geological reserves, to predict the plane distribution of remaining oil; to carry out different polymer injection parameters of indoor drive oil experiment, and to choose the best polymer injection parameters, and to evaluate the effect of flooding. In the transition zone existing well pattern based development well network scheme, combining with the numerical simulation technology for different well spacing, well network, layer system combination development effect evaluation, and selects the optimum well pattern, well spacing and layer system combination, initially formed transitional zone of tertiary oil recovery well network deployment method.