Numerical Simulation Of Secondary Development In Daqing Oilfield Xing7 District

Xing7 district has 3 sets of water flooding well network, are the basis of well network, a network network encryption adjustment and two encryption adjustment wellss, the water flooding wells water was more than 91%.This area from top to bottom develop 98 monolayers, main Layers is PI1-PI3, which is divided into 9 sedimentary units, non-major layers is divided into 89 sedimentary units. PI1₁, PI1₂ and PI2₁¹ unit belong to the in front of the underwater distributary plain deposit, PI2₁², PI3₁, PI2₂ units belong to underwater delta distributary plain deposit, PI3₂, PI3₃ units belong delta distributary plain deposit. The average thickness of sandstone in main layers is 18.51 m, The effective thickness is 11.29 m. Non-major layers belong to In front of the large river-delta depositional system, mainly for the stable distribution of the front sheet sand and untabulated reservoir deposition, poorly overall development.Used Petrel software to establish the S-P-G resevior geological model, the vertical grid refinement to 0.2m; Based on the modelling results of Petrel software, used FloGrid module of Eclipse software to generat the grid geological model data, established the grid geometry model and attribute model suitable for numerical simulation, conducted numerical simulation of different batches in Xing7 distrct.According to the characteristics of block reservoir development and well pattern arrangement, the class 1 layer develop better, can be divided into two layers of expoitation, the class 3 layer cevelpoment small, thin and poor resevior do not have a separate three encryption adjustment potential, three encryption adjustment wells must consider the use of other wells.