姬塬油田压裂水平井开发技术政策研究

Technology Policy Research of Development by Fracturing Horizontal Wells in Jiyuan Oilfield

低渗透油藏水平并开发效果，既受到低渗透油藏地质条件的影响，也与水平井的设计及压裂参数相关。、以长庆姬塬油田罗1井区地质模型为基础，利用数值模拟技术进行了低渗透油藏水平井开发的相关技术政策研究。通过系统研究．得出姬塬油田合理的井网型式为直井注水压裂水平井采油，五点注采井网中水平井的最优无因次长度在0．5～0．6之间．最优无因次裂缝半长在0．6～0．7之间，最优裂缝务数为5奈，最优裂缝导流能力为30μm·cm，合理地层压力保持水平在1．1～1．2之间，同时得到井网合理的注采参数．

Based on geological model of well Luol area in Changqing Jiyuan oilfield, this paper utilizes numerical simulation technique to perform related technical policy research on the horizontal well development of low permeability oil reservoirs. Systematical research shows that reasonable spacing pattern of Jiyuan oilfield is oil recover）, with horizontal wells through fracturing on vertical intervals by waterflooding. Optimal dimensionless length of horizontal well in five-spot flood system is within 0.5-0.6, with optimal fracture dimensionless haft-length of 0.6-0.7, optimal fracture number of 5, optimal fractme conductivity of 30 μm2·cm, and reasonable formation pressure retaining level within 1.1-1.2. And thus reasonable injectionproduction parameters of well pattern are achieved.