油气藏评价与开发 >
2023 , Vol. 13 >Issue 2: 215 - 222
DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2023.02.010
存在部分渗透断层的条带状复合油藏试井解释模型
收稿日期: 2021-08-18
网络出版日期: 2023-04-26
基金资助
国家科技重大专项“致密油体积压裂试井方法研究”(2017ZX05071005);黑龙江省自然科学基金“考虑复杂裂缝系统的致密油藏渗流理论及产能分析方法研究”(LH2022E023)
Well test analysis model for ribbon-shaped composite reservoirs with partially permeable faults
Received date: 2021-08-18
Online published: 2023-04-26
条带状复合油藏中断层是多种多样的，储层中断层的存在影响了井底压力变化特征，断层的位置以及井位更是加大了试井解释模型建立与求解的难度。因此，亟需建立具有一定渗透能力的断层且井位于条带状油藏任意位置的试井解释模型。基于断层的部分渗透性，考虑流体性质及复合储层的性质，分别建立了井位于条带状复合油藏断层和储层中任意位置时的试井物理模型和数学模型，利用Fourier变换和Laplace变换方法，得到了考虑部分渗透断层的试井数学模型拉氏空间解。绘制了压力及压力导数试井典型曲线，进行了试井典型曲线的特征和敏感性分析。通过对井位于任意位置时的试井典型曲线特征的说明，充分阐述了考虑断层部分渗透性及井位置的重要性，对考虑部分渗透断层的条带状复合油藏试井解释方法研究具有重要意义。
邢翠巧 , 尹洪军 , 张野 , 付京 . 存在部分渗透断层的条带状复合油藏试井解释模型[J]. 油气藏评价与开发, 2023 , 13(2) : 215 -222 . DOI: 10.13809/j.cnki.cn32-1825/te.2023.02.010
There are many kinds of faults in ribbon-shaped composite reservoirs, which affects the change of bottom hole pressure. The location of faults and wells make it more difficult to establish and solve the model of well test analysis. Therefore, it is urgent to establish a well testing analysis model with partially permeable faults and in any location of wells in ribbon-shaped reservoir. Based on the partial permeability of the fault and considering the properties of the fluid and the composite reservoir, the physical model and the mathematical model of the ribbon-shaped composite fault and reservoir are established respectively. And then, the Laplace space solution considering partial permeability fault is obtained by Fourier transform and Laplace transform. The pressure and pressure derivative curves are drawn. The characteristics and sensitivity of the typical curves and the influence of well location on the typical curves of well testing are analyzed. And the importance of considering the partial permeable of the faults and well location is fully explained. It is of great significance to the research on well test interpretation method for ribbon-shaped composite reservoirs with partially permeable faults.
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