The Research Of DaQingZi Oilfield Tract Intergral Fracturing Design Method

The technique of Intergral Fracturing exploitation is as follows: Fracture crumb of certain fracture length, fluid conductance capacity and fracture orientation is put into the reservoir model, we can predict a series of changes the fracture crumb acting on oil production and oil scavenge efficiency, make the study of the harmony and matching between the fracture crumb and various reservoir condition, find out its optimal state. The theory of Production Engineering, Geology Engineering and Reservoir Engineering and the technique of reservoir numerical simulation are applied in this article. The optimum research approach of fracture penetration ratio, fracture conductance capacity and exploitation Parameter are discussed in depth here. A series of technical and systematic approach are summarizes in this article. For example, how hydrofracture matches with the reservoir considering the reservoir or the tract a working unit. We also describe how reservoir dynamic change influence the recovery ratio. That is, how to optimize hydrofracture so as to accommodate to the well pattern system under the condition of fixed-well pattern system. Taking the actural oilfield situation into account, we put forward the position relation between the hydrofracture scale and the pattern arrangement quantificationally. The project have studied the exploitation well pattern system and hydrofracture system combinationally. The research will provide an important principle for the pattern arrangement and the hydrofracture arrangement. On the base of the research of intergral fracturing design method of low permeability oil well and water oil tract, Conductance capacity optimum of individual well limited conductive vertical fracture well is stated according to seppage flow mechanism. The theoretical analysis and calculational method are involved. Quantificational optimum analysis method and simple calculational expression of vertical fracture oil well are given here. The result can provide guidance for the producing reserves and provide practical technique for economical and effective exploitation for Group Corporation, so the design method has superior technical and economic value.