Analysis Of Artificial Fracturing Well Productivity Of Low Permeability Oil Reservoirs

At present, our country has already entered a stage of large-scale mining of low permeability oil reservoirs efficient and reasonable development of low permeability reservoirs has become the main topic for China and the world. For low permeability reservoir oil production in conventional mining methods with low or no production of this particularity, the exploration of low permeability reservoir must to take fracturing production stimulation measures.The paper begins with a brief review of low permeability reservoirs at home and abroad artificial fractured wells capacity analysis of the course of development, and then expounded the basic characteristics of the low permeability reservoir and special percolation mechanism, followed by analysis of the main artificial fracture stimulation technology, clarify the the fracturing mechanism established artificial fracture model, artificial fracture seepage field and to improve the capacity of the reservoir seepage. On this basis, Combined with the seepage theory, the artificial fracturing well productivity calculation model is established, the artificial fracturing well productivity formula is deduced, analyzes the start-up pressure gradient, media deformation coefficient on the influence of the artificial fracturing well productivity of low permeability oil reservoirs. Finally take a typical low permeability oilfield in ordos basin as an example, analyze the reliability of the model, capacity calculation results consistent with the scope of the actual output block, indicating that the model has a strong practical and good accuracy.