Xi Ren Gou Oil Reservoir Description And Comprehensive Technology Research

In recent years, with the deepening of exploration and development of oil field, lowpermeability and extra low permeability oil field, has gradually become the main force of theoil field exploration and development in our country, the proportion of low permeability oilfield increases, low permeability. Petroleum geological reserves of our country is currently inthe development, accounting for28%of the total reserves of oil reserves of extra lowpermeability, low permeability, low permeability oil and gas reservoir with poor reservoirproperties, low single well production, development difficulty, high cost, difficult to keepproduction stable characteristics. Must be carried out after fracturing, will obtain the economicyield. A lot of research data show that, in low permeability reservoir has plastic and lowvelocity non Darcy percolation (start pressure), from the current domestic block developmentexperience in low permeability oilfield, low permeability reservoir well put into productionafter most initial production declining quickly, displacement pressure gradient is large, and thewater injection development after water injection performance of different problems thedegree of difference, well slow effect etc.. The passive situation so it is easy to form low at theinitial stage of development.Xi Ren Gou oilfield is located in the Erdos in North Shaanxi Slope on the western edge ofthe original drive type, elastic solution gas drive, low pressure, low permeability, ultra-lowpermeability reservoir. This dissertation studied and analyzed the geological characteristics ofoil reservoir Xi Ren Gou (including stratigraphic characteristics, structural characteristics,reservoir characteristics and so on), a detailed evaluation and analysis team oilfield waterflooddevelopment in recent years, the development of the use of numerical simulation andthree-dimensional simulation method on late oil zone were optimized and the optimizationformulation with the scheme and the scheme of comprehensive treatment, the paper putsforward the principle of reservoir development, formation division principle, has determinedthe development mode, and gives the extension of9, extension10, Chang2reservoir after therelevant design parameters of oil field development. Field test results show that, the schemeeconomically feasible, and betting horizon extension of9, Yan10, Chang2reservoirreformation effect is ideal, the significant slowdown in the pace of recovery, dynamic liquid level obviously decreased the formation energy. In the promotion of production at the sametime, the block of some production wells appear obvious rise of injected water, that affected bythe reservoir heterogeneity, fingering has affected the production, the need for measures toimprove the water condition, at the same time, some wells as production parameters has led tounreasonable part by well earlier water breakthrough, to formulate reasonable productionparameters in the development process in the late.Low permeability oil or super (super) in low permeability oilfield will be the mainresource base for quite a long period of increasing reserves and production, according to XiRen Gou extra low permeability reservoir study in reservoir description and comprehensivetreatment plan, will enhance the provide theory basis and technical support for reasonabledevelopment policy formulation reservoir development effect, reservoir low permeability,which has good guidance for extra low permeability oil field development benefit maximum.