碳酸盐岩缝洞型油藏流固耦合下的油水两相流动特征

doi:10.7657/XJPG20240409

新疆石油地质 ›› 2024, Vol. 45 ›› Issue (4): 451-459.doi: 10.7657/XJPG20240409

碳酸盐岩缝洞型油藏流固耦合下的油水两相流动特征

刘强¹^,²^,³(), 李静⁴, 李婷²^,³^,⁵, 郑明君²^,³^,⁵, 徐梦佳²^,³^,⁵, 王轩²^,³^,⁵, 吴明扬⁴

1.中国石油塔里木油田分公司，新疆库尔勒 841000
2.中国石油天然气集团有限公司超深层复杂油气藏勘探开发技术研发中心，新疆库尔勒 841000
3.新疆维吾尔自治区超深层复杂油气藏勘探开发工程研究中心，新疆库尔勒 841000
4.中国石油大学（华东）深层油气全国重点实验室，山东青岛 266580
5.中国石油塔里木油田分公司勘探开发研究院，新疆库尔勒 841000

收稿日期:2024-04-08 修回日期:2024-05-10 出版日期:2024-08-01 发布日期:2024-07-23
作者简介:刘强（1970-），男，山东威海人，教授级高级工程师，博士，石油地质，（Email）liuq006@sina.com
基金资助:
中国石油科技项目(2023ZZ16)

Oil-Water Two-Phase Flow Behaviors in Fracture-Cavity Carbonate Reservoirs With Fluid-Solid Coupling

LIU Qiang¹^,²^,³(), LI Jing⁴, LI Ting²^,³^,⁵, ZHENG Mingjun²^,³^,⁵, XU Mengjia²^,³^,⁵, WANG Xuan²^,³^,⁵, WU Mingyang⁴

1. Tarim Oilfield Company, PetroChina, Korla, Xinjiang, 841000, China
2. R&D Center for Ultra-Deep Complex Reservoir Exploration and Development, CNPC, Korla, Xinjiang 841000, China
3. Xinjiang Engineering Research Center for Ultra-Deep Complex Reservoir Exploration and Development, Korla, Xinjiang 841000, China
4. State Key Laboratory of Deep Oil and Gas, China University of Petroleum (East China), Qingdao, Shandong 266580, China
5. Research Institute of Exploration and Development, Tarim Oilfield Company, PetroChina, Korla, Xinjiang, 841000, China

Received:2024-04-08 Revised:2024-05-10 Online:2024-08-01 Published:2024-07-23

摘要/Abstract

摘要：

为提高缝洞型碳酸盐岩油藏采收率，探究其流固耦合下的油水两相流动特性，根据不同介质中的流体流动规律，建立了Stokes-Darcy两相流体流动模型；基于有效应力原理和广义胡克定律，建立了适用于缝洞型碳酸盐岩油藏的油水两相Stokes-Darcy流固耦合数学模型；分别针对有无流固耦合的缝洞型碳酸盐岩油藏，进行了宏观和细观的油水两相流体流动模拟。研究结果表明：油藏有无流固耦合作用，其油水两相流体流动特性在基质区差异较大，在溶洞内差异较小，注水速度对缝洞型碳酸盐岩油藏的油水流动影响较大。

关键词: 碳酸盐岩, 缝洞型油藏, 流固耦合, 油水两相流, 数值模拟

Abstract:

To enhance the recovery of fracture-cavity carbonate reservoirs and investigate the oil-water two-phase flow behaviors under fluid-solid coupling effect, a Darcy-Stokes two-phase flow model was established based on the fluid flow patterns in different media. According to the principles of effective stress and the generalized Hooke’s law, an oil-water two-phase Darcy-Stokes coupled mathematical model suitable for fracture-cavity carbonate reservoirs was developed. Macroscopic and microscopic simulations of oil-water two-phase flows were conducted for carbonate reservoirs with and without fluid-solid coupling effect. The results show a significant difference in oil-water two-phase flow behaviors within the matrix zones of reservoirs with and without fluid-solid coupling effect, but a small difference within cavities. Water injection rate greatly influences oil-water flows in fracture-cavity carbonate reservoirs.

Key words: carbonate rock, fracture-cavity reservoir, fluid-solid coupling, oil-water two-phase flow, numerical simulation

中图分类号:

TE344

刘强, 李静, 李婷, 郑明君, 徐梦佳, 王轩, 吴明扬. 碳酸盐岩缝洞型油藏流固耦合下的油水两相流动特征[J]. 新疆石油地质, 2024, 45(4): 451-459.

LIU Qiang, LI Jing, LI Ting, ZHENG Mingjun, XU Mengjia, WANG Xuan, WU Mingyang. Oil-Water Two-Phase Flow Behaviors in Fracture-Cavity Carbonate Reservoirs With Fluid-Solid Coupling[J]. Xinjiang Petroleum Geology, 2024, 45(4): 451-459.

图/表 9

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参数	取值	参数	取值
基质初始渗透率/mD	0.8	出口压力/MPa	80
基质初始孔隙度	0.02	水相密度/（kg·m^-3）	1 000
基质弹性模量/GPa	34	水相黏度/（mPa·s）	1
基质泊松比	0.21	油相密度/（kg·m^-3）	800
基质Biot系数	0.8	油相黏度/（mPa·s）	1.8
裂缝孔隙度	0.01	最大水平主应力/MPa	180
裂缝初始渗透率/mD	1×10⁵	最小水平主应力/MPa	150
裂缝初始开度/mm	0.2	滑移系数/（m·s^-1）	0.1
裂缝法向刚度/GPa	100	裂缝Biot系数	1
渗流耦合参数/Pa^-1	1×10^-6	注水速度/（m·s^-1）	0.1
初始地层压力/MPa	80	水相、油相相渗指数	1

碳酸盐岩缝洞型油藏流固耦合下的油水两相流动特征

Oil-Water Two-Phase Flow Behaviors in Fracture-Cavity Carbonate Reservoirs With Fluid-Solid Coupling

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