2016年12月第35卷第6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. 06.011
Dee.，2016 Vol. 35 No. 6
考虑应力敏感的致密气藏水平井产能计算方法
谷建伟’于秀玲’马宁？田同辉”张以根”
（1.中国石油大学石油工程学院，山东青岛266580；2.大庆油田有限责任公司第二采油厂，黑龙江大庆163414；
3.中国石化胜科油田分公司，山东东营257015）
捕要：除启动压力梯度外致密气减还存在应力敏感，在实验确定应力敏感参数的基础上，引人虚拟裂缝概念利用保角变换方法，考虑应力敏感和启动压力梯度建立了气藏水平井产能方程，同时分析了应力敏感、启动压力梯度、水平井长度等对产能的影响。结果表明：产能方程与试采产能的误差小于7%，验证了产能方程的可靠性；应力敏感和启动压力梯度均使产能降低，其中应力敏感占主要作用：应力敏感在低并底流压时对产能影响严重，启动压力梯度在高井底流压时对产能影响较大；水平井长度是影响产能的主控因素。该研究丰富了致密气藏水平井产能计算方法，并为水平并长度和生产压差的优化提供了理论指导。
关键调：致密气截；水平井：产能计算；应力敏感；启动压力梯度；虚拟裂缝：保角变换；影响因素
文章编号：1000-3754（2016）06-0057-06
中图分类号：TE348
文献标识码：A
PRODUCTIVITYCALCULATINGMETHODOFTHEHORIZONTAL
WELLSINTIGHTGASRESERVOIRSCONSIDERING
THESTRESSSENSITIVITY
GU Jianwei', YU Xiuling', MA Ning", TIAN Tonghui', ZHANG Yigen
f1.College ofPetroleumEngineering,ChinaUniversityof PetroleumQingdao266580,China;2.No.2 Production Plant of Daqing Oifield Co Lid., Daqing 163414, China; 3. Sinopec Shengli Oilfield Company,
Dongying 257015, China)
Abstract: in addition to threshold pressure gradient, tight gas reservoirs have the stress sensitivity. Based on the stress sensitive parameters determined by the experiments, the concept of the virtual fracture was introduced, and the horizontal well productivity equation considering the stress sensitivity and threshold pressure gradient was de-rived from the conformal transformation. At the same time, the influences of the stress sensitivity, threshold pres-sure gradient and horizontal well length on the productivity were analyzed. The results show that the error between the productivity and test productivity equations is less than 7% and the reliability of the equation is verified; the stress sensitivity and threshold pressure gradient can reduce the productivity, and the former is the main influencing factor; when the bottomhole flowing pressure is rather lower, the stress sensitivity influences the productivity signifi-aaeonooaaensoaao
收稿日期：2016-01-12
改回日期；2016-08-20
基金项目：国家油气重大专项“复杂油气激精细表征及剩余油分布预测”（2011ZX05009-003）。作者简介：谷建伟，男，1971年生，教授，博士，从事油气田开发方面的教学科研工作。
E-mail : gjwLcp@ 163. com
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