低渗透裂缝性油藏水平井压裂优化设计

发布时间：2018-05-12 23:37

本文选题：低渗透油藏 + 水平井压裂　；参考：《西安石油大学》2015年硕士论文

【摘要】：近年来,随着水平井数量的增多以及大型压裂技术不断发展进步,利用水平井技术结合大规模压裂技术已经成为开发低渗透裂缝性油藏的主要手段。利用数值模拟方法对水平井裂缝参数和施工参数的优化,来指导水平井压裂改造,对提高压裂水平井的开发效果具有重要的现实意义。本文主要基于红河油田水平井压裂后造成含水快速升高、产能大幅递减等问题,应用研究区压裂井资料的统计分析、理论分析、数值模拟综合研究方法,最终得出一套低渗透裂缝性油藏水平井压裂的优化设计。首先,低渗透裂缝性油藏水平井压裂特征分析,基于压裂施工曲线,分析红河油田长8低渗透油藏压窜井特征及原因。第二,低渗透裂缝性油藏水平井压裂后产能分析与裂缝参数优化,通过数值模拟软件(CMG软件),建立单/双水平井的压裂缝不同的几何参数与组合模型,利用裂缝性油藏单渗和双渗计算模型,得到产能图版;考察压窜单一因素对产能的影响,对红河油田长8油藏进行产能预测和裂缝参数优化,提出预防压窜措施。第三,通过优化压裂后裂缝参数,利用压裂设计软件(Fracpro PT软件)优化压裂施工参数。进而针对红河油田长8低渗透裂缝性油藏压裂实例,结合现场资料以及油藏地质状况,提出预防压窜的优化裂缝参数、压裂施工参数,指导现场施工。
[Abstract]:In recent years, with the increasing number of horizontal wells and the continuous development and progress of large-scale fracturing technology, the use of horizontal well technology combined with large-scale fracturing technology has become the main means to develop low-permeability fractured reservoirs. The application of numerical simulation to the optimization of fracture parameters and operation parameters of horizontal wells is of great practical significance to improve the development effect of horizontal wells. Based on the problems of rapid increase of water cut and large decrease of productivity after fracturing in horizontal wells in Honghe Oilfield, this paper applies the statistical analysis, theoretical analysis and numerical simulation comprehensive research method of fracturing well data in the research area. Finally, a set of optimization design of horizontal well fracturing in low permeability fractured reservoir is obtained. Firstly, the fracturing characteristics of horizontal wells in low permeability fractured reservoirs are analyzed. Based on the fracturing curve, the characteristics and causes of fracturing and channeling in Chang8 and low permeability reservoirs in Honghe Oilfield are analyzed. Second, productivity analysis and fracture parameter optimization after fracturing in low permeability fractured reservoir. Through numerical simulation software CMG software, different geometric parameters and combination models of single / double horizontal wells are established. By using the single permeability and double permeability calculation models of fractured reservoir, the productivity chart is obtained, the influence of single factor of pressure channeling on productivity is investigated, the productivity prediction and fracture parameter optimization of Chang 8 reservoir in Honghe Oilfield are carried out, and the measures to prevent pressure channeling are put forward. Thirdly, by optimizing fracture parameters after fracturing, fracturing parameters are optimized by fracturing design software (Fracpro PT). According to the fracturing example of Chang8 low permeability fractured reservoir in Honghe Oilfield, combined with field data and reservoir geological condition, the optimized fracture parameters and fracturing construction parameters to prevent pressure channeling are put forward to guide field operation.
【学位授予单位】：西安石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：TE357

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