致密油藏多重介质非线性渗流压力响应分析

兰州理工大学学报 ›› 2022, Vol. 48 ›› Issue (4): 71-75.

致密油藏多重介质非线性渗流压力响应分析

康浩¹, 李林凯^*2,3, 高建⁴, 侯美伶¹, 刘胜利¹, 张继敏³

1.河北师范大学中燃工学院, 河北石家庄 050024;
2.西南石油大学油气藏地质及开发工程国家重点实验室, 四川成都 610500;
3.西南石油大学石油与天然气工程学院, 四川成都 610500;
4.中国石油勘探开发研究院, 北京 100083

收稿日期:2021-08-25 出版日期:2022-08-28 发布日期:2022-10-09
通讯作者: 李林凯(1986-),男,山东泰安人,博士,讲师.Email:linkai_li@126.com
基金资助:
四川省科技计划(2022JDRC0097),国家重点研发计划(2019YFC0312304),油气藏地质及开发工程国家重点实验室项目(PLN201914),国家科技重大专项大型油气及煤层气开发(2016ZX05017),河北省教育厅科技项目(QN2018158)

Pressure analysis of nonlinear flow in multiple media of tight oil reservoir

KANG Hao¹, LI Lin-kai^2,3, GAO Jian⁴, HOU Mei-ling¹, LIU Sheng-li¹, ZHANG Ji-min³

1. College of Engineering, Hebei Normal University, Shijiazhuang 050024, China;
2. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu 610500, China;
3. Petroleum Engineering School, Southwest PetroleumUniversity, Chengdu 610500, China;
4. Research Institute of Petroleum Exploration and Development,PetroChina, Beijing 100083, China

Received:2021-08-25 Online:2022-08-28 Published:2022-10-09

摘要/Abstract

摘要： 为了达到高效开发致密油藏的目的,通过分析致密油藏的介质特点及渗流规律,建立了致密油藏多重介质数学模型,运用牛顿-拉普生迭代法求得了模型的数值解,验证了模型的正确性.分别研究了非线性渗流参数、窜流系数、弹性储容比、边界条件对试井曲线的影响.结果表明,非线性渗流特征主要影响了裂缝与基质之间的物质交换,当大裂缝与小裂缝、大裂缝与基质之间的窜流能力相同时,压力导数曲线上仅出现一个凹子;当窜流能力不同时,压力导数曲线上将会出现两个凹子.基质储容比的增加会同时导致两个凹子深度的增加,而微裂缝储容比的增加仅仅加大了第一个凹子的深度.

关键词: 致密油, 非线性流, 压力分析, 多重介质, 数值解

Abstract: In order to realize the efficient development of the tight oil reservoirs, the multi-media mathematical model of multiple media tight oil reservoir is established on basis of flow equation analysis. The numerical solution of the model is obtained by the Newton-Raphson iteration method, which is used for the validation of the model. Then, the effects of nonlinear flow parameter, cross flow coefficient, elastic storativity ratio, and boundary conditions on well test curves are studied, respectively. Results show that the nonlinear seepage characteristic mainly affects the material exchange between fracture and matrix. When the cross flow ability between large-small fracture and large fracture-matrix is the same, there is only one caviton on the pressure derivative curve. Otherwise, there will be two cavitons. The increase of matrix storativity ratio lead to the increase of the depth of the two concavities at the same time, but the increase of micro fracture storativity ratio only increases the depth of the first caviton.

Key words: tight oil, nonlinear flow, pressure analysis, multiple media, numerical solution

中图分类号:

TE357

康浩, 李林凯, 高建, 侯美伶, 刘胜利, 张继敏. 致密油藏多重介质非线性渗流压力响应分析[J]. 兰州理工大学学报, 2022, 48(4): 71-75.

KANG Hao, LI Lin-kai, GAO Jian, HOU Mei-ling, LIU Sheng-li, ZHANG Ji-min. Pressure analysis of nonlinear flow in multiple media of tight oil reservoir[J]. Journal of Lanzhou University of Technology, 2022, 48(4): 71-75.

参考文献

[1] LI L,JIANG H,LI J,et al.An analysis of stochastic discrete fracture networks on shale gas recovery [J].Journal of PetroleumScience and Engineering,2018,167:78-87.
[2] 李国欣,朱如凯.中国石油非常规油气发展现状、挑战与关注问题 [J].中国石油勘探,2020,25(2):1-13.
[3] 谢玉洪,蔡东升,孙晗森.中国海油非常规气勘探开发一体化探索与成效 [J].中国石油勘探,2020,25(2):27-32.
[4] 白晓虎,齐银,何善斌,等.致密储层水平井压裂-补能-驱油一体化重复改造技术 [J].断块油气田,2021,28(1):63-67.
[5] LI L,GUO X,ZHOU M,et al.Numerical modeling of fluid flow in tight oil reservoirs considering complex fracturing networks and Pre-Darcy flow [J].Journal of Petroleum Science and Engineering,2021,207:109050.
[6] 郑太毅,刘先贵,杨正明,等.致密油藏注天然气提高采收率应用研究进展 [J].应用化工,2020,49(1):190-195.
[7] 王伟,康胜松,高峰,等.基于模糊C均值聚类与Bayes判别的致密油储层分类评价 [J].特种油气藏,2020,27(5):118-124.
[8] CARLSON E S,MERCER J C.Devonian shale gas production:mechanisms and simple models [J].Journal of Petroleum Technology,1991,43(4):476-482.
[9] 苏玉亮,王文东,周诗雨,等.体积压裂水平井三线性流模型与布缝策略 [J].石油与天然气地质,2014(3):435-440.
[10] 姚军,殷修杏,樊冬艳,等.低渗透油藏的压裂水平井三线性流试井模型 [J].油气井测试,2011,20(5):1-5.
[11] 刘启国,岑雪芳,李隆新,等.多段压裂水平井三线性流模型适用性研究 [J].油气藏评价与开发,2018,8(2):63-67,72.
[12] 任岚,黄鑫.致密油藏体积压裂水平井分区复合产能模型 [J].大庆石油地质与开发,2018,37(2):157-163.
[13] 姜瑞忠,杨仁峰,马勇新,等.低渗透油藏非线性渗流理论及数值模拟方法 [J].水动力学研究与进展(A辑),2011,26(4):444-452.
[14] WANG X,SHENG J J.Effect of low-velocity non-Darcy flow on well production performance in shale and tight oil reservoirs [J].Fuel,2017,190:41-46.
[15] REN X,LI A,FU S,et al.Experimental study on the oil-water relative permeability relationship for tight sandstone considering the nonlinear seepage characteristics [J].Journal of Petroleum Science and Engineering,2018,161:409-416.