pressure depletion drive

A Model with pressure decline curve for acid fracturing wells;

酸压井压后压力递减分析模型

The pressure decline analysis method for acid fracturing well is a kind of "curve fitting" method whose main idea is simulating the physical and chemical changes before and after pump off,and whose main line is the material balance equation.

为了对酸化压裂井压后裂缝参数进行准确的分析和解释,以模拟停泵前后裂缝内的物理、化学变化过程为思路,以停泵后缝内的物质平衡方程为主线,建立酸化压裂井停泵后的缝内压力递减模型,并提出了针对酸化压裂井裂缝参数解释、评估的“曲线拟合”法。

On the basis of analysis of pressure decline curve in hydraulic fracturing, the key of 2-D fracture model analysis is the determination of fitting pressure.

在水力压裂压力递减曲线分析中 ,对二维裂缝模型分析问题的关键是拟合压力的确定 ,因为拟合压力的准确程度将直接影响压裂液滤失系数、裂缝几何尺寸等参数的可靠性。