摘要
针对目前对水平裂缝井产量的影响因素认识不够充分和增产效果评价不够完善,对水平裂缝井产量的影响因素和增产效果评价进行了深入的研究。结合油藏工程理论和数值模拟技术,考虑裂缝导流能力随时间的变化和地层弹性膨胀能等因素对压后产量的影响,以水平裂缝井在生产过程中的渗流特性为理论前提,采用二维柱坐标模型,建立了含水油藏水平裂缝井中油藏-裂缝系统的压力方程和饱和度方程,采用有限差分法对压力方程和饱和度方程进行差分离散求解。实例计算表明:建立的水平裂缝井压后产能预测模型,可以分析影响水平裂缝井产量的地层因素和裂缝因素,计算压后增产效果。对于优化浅层油气藏压裂设计方案具有一定的指导意义。
For the facts that affecting factors of production are inadequately realized and that stimulation effectiveness appraisal is far from perfect for horizontally fractured wells,therefore,the affecting factors of production and stimulation effectiveness appraisal for horizontally fractured wells need to be deeply researched.Combining reservoir engineering theory and numerical simulation technology,considering the factors of fracture conductivity change with time and elastic expansion energy and so on,which has an influence on post-fracturing production,under theory premise of flowing characteristics for horizontally fractured wells during production operation,by using 2-D cylindrical coordinate model,the pressure equations and saturation equations of reservoir and fracture system are established for horizontally fractured wells with water-cut reservoir.The finite difference method is applied,and these equations are discretized,and Visual Basic language is used to develop the software for resolving above problems.Calculating results show that,the development software can be used to analyze fracture factors and layer factors that affect the production,and calculate post-fracturing stimulation effectiveness for horizontally fractured wells,and the achieved results of the analysis and calculation have important guiding meaning for fracturing design to shallow oil and gas reservoir.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2010年第4期77-81,共5页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
国家自然科学基金项目(50774064)
关键词
水平裂缝井
影响因素
增产效果
数值模拟
有限差分法
horizontally fractured wells
affecting factors
stimulation effectiveness
numerical simulation
finite difference method
