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优化基质酸化对获得最有效的增产处理十分重要。找到最佳流速成为许多文章的主题,其中一些文章关注寻找一个最佳Damkohler数。该方法只有在已知线性岩心纵横比时才可找到一个独特的解决方案。此外,在不同的实验室,最佳Damkohler数的突破孔容不同,而且仅仅是调整到一标准曲线。本文弥补了不同实验室使用不同纵横比带来的数据间的差距。采用了最小化突破孔容的方法,孔容是孔隙速度的函数。要使用Damkohler数,需要知道所有岩石的反应速率,但在已经发表的文章中无法获得。因此,该模型使用了温度而非反应速率。本文分析了许多常规盐酸的测试结果,并考虑了温度、酸液浓度、岩心的纵横比、孔隙度及渗透率的差异。所得的全局函数可描述全部数据,数据急剧减小,形成一条标准曲线。从该标准曲线中可以预测在不考虑纵横比的情况下对给定岩石进行的一系列实验所得的最佳泵注速度。新方法通过考虑单一数学描述中酸液浓度、岩心的纵横比、测试温度和岩石形态的不同实验室的线性岩心测试数据,使酸蚀蚓孔得到优化和改进。
Optimizing substrate acidification is important for obtaining the most efficient stimulation. Finding the best flow rate becomes the subject of many articles, some of which focus on finding the best Damkohler number. This method finds a unique solution only when the linear core aspect ratio is known. In addition, in different laboratories, the breakthrough of the best Damkohler number of holes is different, and only adjusted to a standard curve. This article makes up for the gap between the data that different labs use with different aspect ratios. A method of minimizing breakthrough pore volume is used, and pore volume is a function of pore velocity. The use of Damkohler numbers requires knowledge of the reaction rates of all rocks, but is not available in published articles. Therefore, the model uses temperature rather than reaction rate. This paper analyzes the results of many routine hydrochloric acid tests, taking into account differences in temperature, acid concentration, core aspect ratio, porosity and permeability. The resulting global function can describe all the data, the data drastically reduced to form a standard curve. From this standard curve, it is possible to predict the optimum pump injection speed obtained from a series of experiments on a given rock without regard to the aspect ratio. The new method optimizes and improves erodible wormholes by taking into account linear core test data from different laboratories in a single mathematical description of acid concentration, core aspect ratio, test temperature, and rock morphology.