Distribution Of Remaining Oil And Its Production From Eighth Sand-body Of Es2 In The Second Area Shengtuo Oilfield

The total geological reserves of the sand bodies Es2 in Shengtuo Oilfield is 146 million ton,after several years of development,it goes into limit water cut development stage with 97.3% composite water cut and 39.3% degree of reserve recovery.Due to strong reservoir heterogeneity and well pattern type and voidage-injection imbalance,the use situation of reservoir has big difference,and the remaining oil distribution is not clear.Aiming at the problem of the study area,author to the sand bodies Es281 in Shengtuo Oilfield as the research object,on the basis of fine reservoir description,Study of remaining oil distribution and control factors,nailed down the economic and technological boundaries of development indexs consist of fluild,oil and water cut with different oil price,carrying out the research on vector well pattern,well spacing,pressure maintenance,well type and matching process technology,making the adjustment of limit water cut stage oilfield.Through the implementation of the scene,obviously slowing down the riseing of water and the production decline,achieving the purpose of taping the remaining oil and improving development effect.It can be expected that the oil recovery can be increased by 4.45%,the recoverable reserves can be increased by 570,000 tons.It can provide technical reference method for stability of liquids,water control,and structural adjustment for the old oilfied.