Study On Reservoir Injection/Production Project Of Fanxue Area, Dingbian

In recent years, Fanxue oil region became a large oil field for which nearly one hundred million tons oil reserves.For improving the use of oil reserves、ensuring a steady increase in oil production in the future、changing oil production rate to a reasonable level and achieving the stable and increasing target, oil field water injection will be very important for the development process in the future.Firstly, the paper elaborates the regional tectonic background and sedimentary paleoenvironment of studying area of Yanchang, then studies the reservoirs status of Fanxue, and summaries the characteristics of reservoir exploitation of Yanchang; Secondly, it proposes the depositional model and of Yanchang before giving the main phase flag of Yanchang and studying the division of sedimentary facies and combination of sequence profile sand skeleton, then summaries the characteristics of reservoir diagenesis、reservoir characteristics of the microstructure and distribution of reservoir properties and reservoir distribution of Yanchang, so completes the sedimentary facies and reservoir characteristics of Fanxue; Thirdly, it summaries the characteristics of reservoir development of Yanchang by elaborating reservoir development principles of Yanchang and many experiments, then proposes optimization of injection zone block problem, thus completes the study for reservoir development principles and optimization of injection zone block problem; The last, it determines the rational number of injection wells and analysises the feasibility of water injection by the experiments of trend of oil sands water efficient micromodel and factors, so completes the preliminary identification of injection well pattern and the preferred of pilot group of injection wells, followed by calculating injector with a group of water, finally solves reservoir injection program design of Yanchang.In the above the basis of theoretical analysis and experimental study, the paper finally summaries7relevant conclusions and proposes the proposal of studying relative permeability experiments and spread the direction of the reservoir study of micro-cracks of Yanchang.