The Study Of Reservoir Assessment For Shabei Oil Field Sha 20 Well Block

As an important stage of the work for exploration and development,reservoir evaluation is the key to the integration of exploration and development,and one of the keys to the operation flow.This research has an important significance for the steble and up yield.Becouse the reservoirs of Shabei Oil Field of Sha 19 and 20 well block Jurassic Xishanyao Formation have mad it successful,met the condition to evaluate and exploit the reservoirs of S205 and Sha 20 well North block Jurassic Xishanyao Formation.In this paper,the three-dimensional fine interpretation of the Sanan fault block has been carried out again,and 3 layers of structural maps have been worked out,such as the Xishanyao Formation,the lower coal seam of Eight Dou Formation and the group sand layer roof of Wutong Formation.And the traps of Sha 8 well east fault block,Sha 9 well West fault block,Sha 9 well South block and Sha 13 well North fault block on the East and West sides of the Shabei oil field were respectively described.Meanwhile,in order to prepare the favorable target for the rolling exploration and development in the lower part of the Shanan fault block,the control factors of the reservoir were studied,the reservoir type and the scale were predicted,and the exploration prospects of the Jurassic and the following strata were displayed.Based on the comprehensive evaluation of the reservoir area in Sha 20 well,the paper further and finely explained the implementation of fault block traps in the west block of Sha 20 well,the fault block of Sha 20 well and the block 15 of Sha 15.And the structural features,reservoir distribution,control factors and distribution of oil and gas reservoirs were studied.The development wells,such as S202 well,S203 well,S204 well,S205 well,and S206 well were demonstrated,including 2 development and control well.It also carried out the evaluation and tracking research of fault block reservoir in Sha 20 well and the West fault block of Sha 20 well,and calculates the proved reserves in S202 well block and S203 well block.Through the above research,the purpose of reservoir expansion and new capacity is realized.