支撑裂缝长期导流能力数值计算

NUMERICAL CALCULATION OF LONG-TERM CONDUCTIVITY OF PROPPING FRACTURES

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 th e long-term conductivity of propping fractures was studied by FCES-100 and the e xperimental results show that closure pressure and time are main factors affecti ng the conductivity of haydite with a certain radius. The function expression of the conductivity changing with the closure pressure and time was regressed by s tatistical principle on the basis of a lot of experimental data, and its accurac y was tested through practical application. The result is useful to scientific r esearch and fracturing on spot. Furthermore, it is a new attempt to calculate th e long-term conductivity of propping fractures.