2016年8月第35卷第4期
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI:10.3969/J.ISSN.1000-3754.2016.04.009
考虑多因素的低渗油藏水平井注采井距
何勇明张天宇李军（成都理工大学能源学院，四川成都610059）
Aug，2016 Vol. 35 Ne. 4
摘要：为改善低渗透油截开发中直井注人压力较高、注水效果较差的情况，利用水平并注水开发低渗油藏。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索的井距计算方法。通过对比分析和实例计算，与前人公式的计算结果相比，同时考患这3个因素的方程计算合理并距有所减小，更符合实际情况。
关键词：低渗透油藏；水平井；水平井注水；压力损失；两相渗流；井距
中图分类号：TE348
文献标识码：A
文章编号：1000-3754（2016）04-0049-06
HORIZONTALWELLINJECTION-PRODUCTIONSPACINGSFORTHE
LOW-PERMEABILITYOILRESERVOIRS CONSIDERING
THEMULTIPLEINFLUENCINGFACTORS
HEYongming,ZHANG Tianyu,LI Jun
(College of the Energy, Chengdu University of Technology, Chengdu 610059, Chino)
Abstract: 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 res ervoir 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 eeaee 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.
Key words: low-permeability oil reservoir; horizontal well; horizontal well waterflooding: pressure loss; two-phase flow;well spacing
与中、高渗透油藏相比，利用直井注水开发低渗透油藏，主要间题为注人压力大，注入量低，井
收稿日期：2016-01-07
改回日期：2016-04-28
距较近，地层压力保持难度大，经济性较差[1-2)。随着水平井技术的成熟，钻井成本的降低，利用水
基金项目：四川省教育厅基金“低渗透裂缝性油藏形状因子研究”（13ZB0065）。
作者简介：何勇明，男，1973年生，教授，博士，主要从事油气田开发方面的科研教学工作。
E-mail:hymhym.hym@ 163. com。
万方数据