缝洞型油藏波动和流动耦合模型井底压力分析

杜鑫; 卢志炜; 李冬梅; 徐燕东; 李培超; 卢德唐

doi:10.21656/1000-0887.390123

缝洞型油藏波动和流动耦合模型井底压力分析

doi: 10.21656/1000-0887.390123

¹中国科学技术大学近代力学系, 合肥 230026;²南加州大学维特比工程学院, 加利福尼亚洛杉矶 90089, 美国;³中石化西北分公司, 乌鲁木齐 834000;⁴上海工程技术大学机械与汽车工程学院,上海 201620

基金项目: 国家科技重大专项(2016ZX05053)

详细信息

作者简介:
杜鑫（1995—），男，硕士生(E-mail: duxin67@mail.ustc.edu.cn)；卢德唐（1965—），男，教授，博士生导师(通讯作者. E-mail: dtlu@ustc.edu.cn).

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出版历程
- 收稿日期: 2018-04-18
- 修回日期: 2018-06-29
- 刊出日期: 2019-04-01

Pressure Transient Analysis of the Fractured Vuggy Reservoir Model Coupling Oil Flow and Wave Propagation

¹Department of Modern Mechanics, University of Science and Technology of China, Hefei 230026, P.R.China;²Viterbi School of Engineering, University of Southern California, Los Angeles, California 90089, USA;³Northwest Oilfield Company of SINOPEC, Urumqi 834000, P.R.China;⁴School of Mechanical and Automotive Engineering, Shanghai University of Engineering Science, Shanghai 201620, P.R.China

Funds: The National Science and Technology Major Project of China(2016ZX05053)

摘要

摘要: 缝洞型油藏储集介质包括基质、裂缝和溶洞.在缝洞型油藏的研究中，由于其复杂的孔隙结构和流动机理，裂缝溶洞基质之间的相互作用通常被简化为粒间窜流，然而实际地层中如果溶洞体积很大，会导致流动过程中压力变化很大，所以溶洞并不能被简化为一种介质.通过联立力学三大守恒方程，洞中的压力是以波的形式在溶洞中传播（类似于一种压力降的形式）的理论首次被提出，进而形成了波动和流动耦合的缝洞型油藏新的试井模型，并与外部地层渗流方程相结合形成新的完备的控制方程组，再通过Laplace变换和数值反演，得到了井底压力及压力导数的双对数曲线典型图版.结果表明，井底压力曲线形态受流动和波动相关的无量纲参数以及与外部地层性质有关的无量纲参数的影响，针对各个参数进行了敏感性分析.同时与新疆油田的某实例井相拟合，发现曲线拟合效果很好，地质解释结果与实际结果符合.
- 缝洞型油藏 /
- 流动和波动耦合 /
- Laplace变换 /
- 数值反演 /
- 双对数曲线
Abstract: Fractured vuggy reservoirs consist of matrix, fractures and vugs. Researchers usually treat the matrix-fracture-vug interaction as inter-porosity flow due to their complex pore system and flow mechanism.In fact, vugs play an important role in fractured vuggy reservoirs and can’t be simplified to one homogeneous medium. The idea that pressure spreading in vugs is in form of wave, which is similar to pressure decline, was proposed. Based on that, an analytical well test model for fractured vuggy reservoirs combined with seepage equations for outer formation was presented. Then the log-log type curves of the wellbore pressure and its derivative were obtained through the Laplace transform and numerical inversion. The results show that, the pressure curve forms were influenced by dimensionless parameters related to flow and wave propagation, also by dimensionless parameters related to the outer formation. Sensitivity analysis of these parameters were done. Lastly, a field example was demonstrated to validate the accuracy of the proposed model, which matched the real geological data well.
- fractured vuggy reservoir /
- coupling of flow and wave propagation /
- Laplace transform /
- numerical inversion /
- log-log plot

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参考文献(25)

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缝洞型油藏波动和流动耦合模型井底压力分析

doi: 10.21656/1000-0887.390123

作者简介:
杜鑫（1995—），男，硕士生(E-mail: duxin67@mail.ustc.edu.cn)；卢德唐（1965—），男，教授，博士生导师(通讯作者. E-mail: dtlu@ustc.edu.cn).

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Pressure Transient Analysis of the Fractured Vuggy Reservoir Model Coupling Oil Flow and Wave Propagation

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留言板

缝洞型油藏波动和流动耦合模型井底压力分析

doi: 10.21656/1000-0887.390123

作者简介: 杜鑫（1995—），男，硕士生(E-mail: duxin67@mail.ustc.edu.cn)；卢德唐（1965—），男，教授，博士生导师(通讯作者. E-mail: dtlu@ustc.edu.cn).

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出版历程

Pressure Transient Analysis of the Fractured Vuggy Reservoir Model Coupling Oil Flow and Wave Propagation

计量

出版历程

目录

作者简介:
杜鑫（1995—），男，硕士生(E-mail: duxin67@mail.ustc.edu.cn)；卢德唐（1965—），男，教授，博士生导师(通讯作者. E-mail: dtlu@ustc.edu.cn).