支撑裂缝长期导流能力数值计算

NUMERICAL CALCULATION OF LONG-TERM CONDUCTIVITY OF PROPPING FRACTURES

温庆志 张士诚 王秀宇 朱松文

Wen Qingzhi Zhang Shicheng Wang Xiuyu Zhu Songwen

中国石油大学石油天然气工程学院, 北京 102249 大港油田公司采油三厂, 河北沧州 061001

运用FCES-100裂缝导流仪,研究了闭合压力、时间等因素对支撑裂缝长期导流能力的影响程度。实验表明,对一定粒径的陶粒,闭合压力和时间是影响导流能力的主要因素。在大量实验数据的基础上,应用统计原理,回归出长期导流能力随闭合压力和时间变化的函数表达式,并通过现场运用,验证了其准确性,对科学研究以及现场压裂施工具有指导意义,同时也是支撑裂缝长期导流能力计算方法的新尝试。

The effect of closure pressure, time, etc. on the long-term conductivity of propping fractures was studied by FCES-100 and the experimental results show that closure pressure and time are main factors affecting the conductivity of haydite with a certain radius. The function expression of the conductivity changing with the closure pressure and time was regressed by statistical principle on the basis of a lot of experimental data, and its accuracy was tested through practical application. The result is useful to scientific research and fracturing on spot. Furthermore, it is a new attempt to calculate the long-term conductivity of propping fractures.

10.3969/j.issn.1000-7393.2005.04.021