论文部分内容阅读
本文着重研究了高能气体压裂过程中,井温随时间的变化规律。用爆炸力学的计算方法,对美国提供的实测资料进行了理论计算,得出了可以直接定量计算和预测在实际的压力—时间变化规律下对应的温度—时间变化规律。研究结果与美国及原苏联的研究结果基本符合,证明爆燃石井下温度远低于火药爆然时的瞬时温度。文中指出,改变与控制点火方式就可以控制燃烧速度及爆压值,进而达到控制井温的目的,利用井温的变化过程可以找到井下解堵的办法等。这些为高能气体压裂的现场实施提供了理论依据。
This paper focuses on the study of well temperature variation with time in the process of high-energy gas fracturing. Using the method of explosion mechanics, the theoretical data provided by the United States were calculated and the corresponding temperature-time variation under the actual pressure-time variation law was obtained. The results of the study are basically in line with the findings of the United States and the former Soviet Union, proving that the downhole temperature of deflagration rock is much lower than the instantaneous temperature of explosive powder. The article pointed out that changing and controlling the ignition mode can control the burning rate and the burst pressure, and thus achieve the purpose of controlling the temperature of the well, using the process of changing the temperature of the well to find out the ways of downhole plugging. These provide the theoretical basis for the field implementation of high-energy gas fracturing.