Research Of Remaining Oil Distribution And Development Adjustment Of Deep Imbedded, Low Permeability Reservoirs In The Binding Part Of Wen And Pu

The binding part of Wen and Pu of Zhongyuan oilfield is a typical reservoir of deep imbedded, low permeability and high pressure. Because of it’s complicated structure, imperfect i/p system and low water flooding effect, we use the quantitative description combined with the q ualitative analysis to describe the reservoir and make out the remaining oil distribution.Based on the geology and development situation of the binding part of Wen and Pu oil region, through the flooding diagram analysis and layer utilization, get out the distribution of the remaining oil. Through detailed geological modeling software, we establish a three-dimensional geological model of the target block, and use reservoir simulation software Eclipse to establish numerical model of the target block, we fit the target block by 10 years of production history, evaluate the quality of history matching and give the quantitative description of remaining oil.Based on the result, theoretical analysis method was used to implement the i/p adjustment of the target block. Through developed way of exploitation, new layer division and well pattern and well space optimization, etc., a development plan was brought to effect for development in this area. As low permeability reservoirs depend on the natural energy of formation can not provide enough production capacity, we studied various parameters impact on the productivity theoretically. Fracture parameters under study include:crack length of the production wells, crack length of the injection wells, flow conductivity, pressure of production wel s, pressure of injection wel s and pressure anisotropy of formation.