Method Of Development Of Chepaizi Oilfield Badaowanzu Reservoir

Chepaizi oilfield Chepai1 area Badaowan oil deposit was first found on 25 of April in2011,with the J1b3 oil deposit been developed during 2567.0m to 2576.0m in depth,whose production rate is 16.6 ton every day.In order to develop Badaowan oil deposit effectively,it is need to study how to develop it in proper way.There are some main problems.First one is that the zone is a new one without too much study about geological engineering and dynamic rule condition.The page is based on the theories of Sedimentary petrology,Industrial geology of petroleum,Reservoir engineering,Petroleum physics and Numerical reservoir simulation.We have established the stratigraphic framework through hierarchical control and isochronous correlation of the cycles,which could offer the fundamental geological condition for development.In order to supplement the formation energy we use early injection because of the small formation press and saturation depress.With the dynamic data and relevant expermental data have evaluate the effect of water injection and sensibility of depositor.so as to develop reservoir effectively.Having predicted the recovery including elastic recovery,dissolved gas drive recovery and water drive recovery and at the same time we have predicted the ultimate recovery through the rectified C value way and many other ways.Predicting ultimate recovery has guiding role for construction of productivity,well pattern,numbers of oil well and water well and intensity of water injection.Optimized the well pattern through the analysis of factors that affect the well pattern.At last we get the reasonable density of well pattern through intersection method of figure.Generally speaking we use some rock samples to do relative permeability test to get a relative reasonable curve because of the difference of location of well difference of depth of the same well,difference of lithology and physicial properties.On the basis of geological model we build up the black oil model of the Badaowan reservoir while coarsens the geological model.With the reservoir of numerical simulation we argument the feasibility of filling hole.of typical well.At the same time we evaluated the effect of water injection through productivity of production well to determine the reasonable amount of waterinjection,reasonable injection-production ratio.Last determined the reasonable oil production ratio through the coMParison of formation depress,change of moisture content,cumulative oil production.