何勇明,张天宇,李军
HE Yongming,ZHANG Tianyu,LI Jun

• 1:成都理工大学能源学院

摘要(Abstract)：

为改善低渗透油藏开发中直井注入压力较高、注水效果较差的情况,利用水平井注水开发低渗油藏。前人推导的方程中没有同时考虑启动压力梯度、水平井段压降和油水两相渗流,但是在低渗油藏实际开发中,这3个因素都不能忽略。结合前人研究成果,推导出具有启动压力梯度、水平井段压降和油水两相渗流因素的井距计算方法。通过对比分析和实例计算,与前人公式的计算结果相比,同时考虑这3个因素的方程计算合理井距有所减小,更符合实际情况。
In order to improve the conditions of the rather higher injection pressure and poorer injection effects of the vertical wells for low-permeability oil reservoirs,the horizontal well water injection is widely adopted for the reservoir development. The following three influencing factors were ignored simultaneously by the previously deduced equations: staring pressure gradient,pressure drop of the horizontal interval and oil-water two-phase flows,but in fact they should not be neglected. Integrating with the previous study achievements,the calculating method of the well spacing was derived in the consideration of the above three factors. By means of the contrasting analyses and actual computation,the reasonable well spacing from the integrated equation calculation is a bit shorten and much closer to the reality comparing with the calculated results of the former formulas.

关键词(KeyWords)： 低渗透油藏;水平井;水平井注水;压力损失;两相渗流;井距
low-permeability oil reservoir;horizontal well;horizontal well waterflooding;pressure loss;two-phase flow;well spacing

Abstract:

Keywords:

基金项目(Foundation): 四川省教育厅基金“低渗透裂缝性油藏形状因子研究”(13ZB0065)

作者(Author): 何勇明,张天宇,李军
HE Yongming,ZHANG Tianyu,LI Jun

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