低渗透油藏CO2混相驱注采耦合波及特征及气窜阶段定量划分方法

崔传智; 苏鑫坤; 姚同玉; 张传宝; 吴忠维; 郑文宽; 张营华; 李弘博

doi:10.3969/j.issn.1006-6535.2022.04.012

特种油气藏 >

2022 , Vol. 29 >Issue 4: 90 - 95

DOI: https://doi.org/10.3969/j.issn.1006-6535.2022.04.012

油藏工程

低渗透油藏CO₂混相驱注采耦合波及特征及气窜阶段定量划分方法

崔传智 ,
苏鑫坤 ,
姚同玉 ,
张传宝 ,
吴忠维 ,
郑文宽 ,
张营华 ,
李弘博

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1.非常规油气开发教育部重点实验室,山东青岛 266580;
2.中国石油大学(华东),山东青岛 266580;
3.中国石化胜利油田分公司,山东东营 257015

崔传智(1970—),男,教授、博士生导师,1993年毕业于石油大学(华东)油藏工程专业,2005年毕业于中国地质大学(北京)矿产普查与勘探专业,获博士学位,现主要从事油气渗流理论、油气田开发技术等方面的教学与科研工作。

收稿日期: 2021-12-17

修回日期: 2022-05-12

网络出版日期: 2023-01-09

基金资助

国家自然科学基金“致密油藏多段压裂水平井时空耦合流动模拟及参数优化方法”(51974343)

收起

Sweep Characteristics of CO₂ Miscible Flooding with Injection-Recovery Coupling in Low Permeability Reservoirs and Quantitative Classification of Gas Channeling Stages

Cui Chuanzhi ,
Su Xinkun ,
Yao Tongyu ,
Zhang Chuanbao ,
Wu Zhongwei ,
Zheng Wenkuan ,
Zhang Yinghua ,
Li Hongbo

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1. Key Laboratory of Unconventional Oil and Gas Development, Ministry of Education, Qingdao, Shandong 266580, China;
2. China University of Petroleum (East China), Qingdao, Shandong 266580, China;
3. Sinopec Shengli Oilfield Company, Dongying, Shandong 257015, China

Received date: 2021-12-17

Revised date: 2022-05-12

Online published: 2023-01-09

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摘要

针对CO₂混相驱注采耦合波及特征认识不清,气窜阶段无法定量识别的问题,运用数值模拟方法,分析CO₂混相驱注采耦合波及特征,明确气窜程度表征指标和划分标准。结果表明:与CO₂连续气驱相比,注采耦合开发通过增压储能、放压释能过程,地下渗流场不断变化,扩大气驱波及面积,延迟气窜时间,提高油藏最终采出程度;新方法计算的气窜阶段划分结果与矿场监测数据吻合,可作为矿场气窜阶段识别的依据;储层孔隙度越大,注采耦合开发无气采油阶段变长,气窜发育阶段推迟;生产井离注气井越近,气体突破时间越早,反九点法井网、排状井网、五点法井网进入完全气窜时间分别为3 148、4 120、5 610 d。研究成果可为低渗透油藏CO₂混相驱注采耦合开发提高采收率提供理论指导。

关键词： 低渗透油藏; CO₂混相驱; 注采耦合; 气窜阶段; 波及特征; 定量表征

本文引用格式

崔传智 , 苏鑫坤 , 姚同玉 , 张传宝 , 吴忠维 , 郑文宽 , 张营华 , 李弘博 . 低渗透油藏CO₂混相驱注采耦合波及特征及气窜阶段定量划分方法[J]. 特种油气藏, 2022 , 29(4) : 90 -95 . DOI: 10.3969/j.issn.1006-6535.2022.04.012

Abstract

As the sweeping characteristics of CO₂ miscible flooding with injection-production coupling are not clearly understood and the gas channeling stage cannot be quantitatively identified, numerical simulation was applied to analyze the sweeping characteristics of CO₂ miscible flooding with injection-production coupling and determine the characterization indicators and classification standard of the gas channeling degree. The results showed that, compared with CO₂ continuous gas flooding, the development with injection-production coupling expanded the sweeping range of the gas flooding, delayed the time of gas channeling and improved the final recovery percent of the reservoir through pressurization, energy storage, pressure release and energy release; the results of gas channeling stages calculated by the new method were consistent with the field monitoring data, which can be used as the basis for the identification of the gas channeling stage in the mine; the greater the reservoir porosity, the longer the gas-free oil production stage and the later the gas channeling development stage; the closer the production well was to the gas injection well, the earlier the gas breakthrough time was, and the duration of complete gas channeling was 3 148 d, 4 120 d and 5 610 d for the inverse nine-spot pattern, row pattern and five-spot pattern, respectively. The research results can provide theoretical guidance for the enhanced oil recovery of low permeability reservoirs under development by CO₂ miscible flooding with injection-production coupling.

Key words： low-permeability reservoir; CO₂ miscible flooding; injection-production coupling; gas channeling stage; sweep characteristics; quantitative characterization

参考文献

[1] 李士伦,汤勇,侯承希.注CO₂提高采收率技术现状及发展趋势[J].油气藏评价与开发,2019,9(3):1-8.
LI Shilun,TANG Yong,HOU Chengxi.Present situation and development trend of CO₂ injection enhanced oil recovery technology[J].Reservoir Evaluation and Development,2019,9(3):1-8.
[2] 沈平平,江怀友,陈永武,等.CO₂注入技术提高采收率研究[J].特种油气藏,2007,14(3):1-4,11.
SHEN Pingping,JIANG Huaiyou,CHEN Yongwu,et al.EOR study of CO₂ injection[J].Special Oil & Gas Reservoirs,2007,14(3):1-4,11.
[3] 王业飞,高苗,谭龙,等.裂缝-基质模型CO₂混相注入提高原油采收率[J].油气地质与采收率,2018,25(5):87-92.
WANG Yefei,GAO Miao,TAN Long,et al.Experimental investigation of miscible CO₂ injection for enhanced oil recovery in fracture-matrix model[J].Petroleum Geology and Recovery Efficiency,2018,25(5):87-92.
[4] 张海龙.CO₂混相驱提高石油采收率实践与认识[J].大庆石油地质与开发,2020,39(2):114-119.
ZHANG Hailong.Practice and understanding of enhancing the oil recovery by CO₂ miscible flooding[J].Petroleum Geology & Oilfield Development in Daqing,2020,39(2):114-119.
[5] 张艳梅,万文胜,李琛,等.彩9井区西山窑组特高含水油藏CO₂混相驱先导试验[J].特种油气藏,2021,28(6):121-128.
ZHANG Yanmei,WAN Wensheng,LI Chen,et al.Pilot test of CO₂ miscible displacement for extra high water cut reservoir in Xishanyao formation,well block Cai9[J].Special Oil ＆ Gas Reservoirs,2021,28(6):121-128.
[6] 李金志.胜利油田低渗透油藏CO₂混相驱合理注采井距研究[J].油气地质与采收率,2020,27(3):64-69.
LI Jinzhi.Reasonable well spacing for CO₂ miscible flooding in low-permeability reservoirs of Shengli Oilfield[J].Petroleum Geology and Recovery Efficiency,2020,27(3):64-69.
[7] 刘小波.CO₂混相驱技术在特低渗透滩坝砂油藏的开发实践及效果评价[J].油气地质与采收率,2020,27(3):113-119.
LIU Xiaobo.Application and evaluation of CO₂ miscible flooding in extra-low permeability beach-bar sand reservoirs[J].Petroleum Geology and Recovery Efficiency,2020,27(3):113-119.
[8] 谭龙,王晓光,程宏杰,等.玛湖致密砾岩油藏注烃类气混相驱油藏数值模拟[J].西南石油大学学报(自然科学版),2021,43(5):193-202.
TAN Long,WANG Xiaoguang,CHENG Hongjie,et al.Numerical simulation research on hydrocarbon gas miscible flooding reservoir in Mahu Conglomerate Reservoir[J].Journal of Southwest Petroleum University (Science & Technology Edition),2021,43(5):193-202.
[9] 王瑞,袁士宝,王建,等.复杂断块油藏注采耦合技术提高采收率机理[J].大庆石油地质与开发,2018,37(6):38-42.
WANG Rui,YUAN Shibao,WANG Jian,et al.Mechanism of the injection-production coupling technique for complex fault-block oil reservoirs[J].Petroleum Geology & Oilfield Development in Daqing,2018,37(6):38-42.
[10] 宋力.注采耦合技术提高采收率机理研究[J].石化技术,2019,26(5):91-92.
SONG Li.Study on mechanism of enhanced oil recovery by injection-production coupling technology[J].Petrochemical Industry Technology,2019,26(5):91-92.
[11] 崔传智,高敏,张戈,等.注采耦合挖潜断层夹角区剩余油效果与优化[J].中国科技论文,2018,13(23):2648-2653.
CUI Chuanzhi,GAO Min,ZHANG Ge,et al.Effect and optimization of residual oil with injection-production coupling technique in the fault angle area[J].China Sciencepaper,2018,13(23):2648-2653.
[12] 李承龙.特低渗透油藏CO₂驱气窜影响因素及规律[J].特种油气藏,2018,25(3):82-86.
LI Chenglong.Gas Channeling influencing factors and patterns of CO₂-flooding in ultra-low permeability oil reservoir[J].Special Oil & Gas Reservoirs,2018,25(3):82-86.
[13] 冯祥,宫汝祥,李敬松.多元热流体吞吐井间气窜程度表征与预测研究[J].非常规油气,2018,5(6):55-61.
FENG Xiang,GONG Ruxiang,LI Jingsong.Study on the characterization and prediction of gas channeling in multiple thermal fluid[J].Unconventional Oil & Gas,2018,5(6):55-61.
[14] 高慧梅,何应付,赵淑霞,等.低渗透油藏CO₂驱气窜影响因素分析及模糊评判预测[J].中国海上油气,2014,26(4):63-66.
GAO Huimei,He Yingfu,ZHAO Shuxia,et al.Control-factor analysis and fuzzy-evaluation prediction of gas channeling during CO₂ flooding in low-permeability oil reservoirs[J].China Offshore Oil and Gas,2014,26(4):63-66.
[15] 杨红,余华贵,江绍静,等.非均质性气窜对CO₂驱油影响量化实验研究[J].石油化工高等学校学报,2015,28(5):55-59.
YANG Hong,YU Huagui,JIANG Shaojing,et al.Quantitative study of the influence of heterogeneity gas channeling on CO₂ flooding[J].Journal of Petrochemical Universities,2015,28(5):55-59.
[16] 郝宏达,侯吉瑞,赵凤兰,等.低渗透非均质油藏CO₂非混相驱窜逸控制实验[J].油气地质与采收率,2016,23(3):95-100,115.
HAO Hongda,HOU Jirui,ZHAO Fenglan,et al.Experiments of gas channeling control during CO₂ immiscible flooding in low permeability reservoirs with heterogeneity[J].Petroleum Geology and Recovery Efficiency,2016,23(3):95-100,115.
[17] 张世明.低渗透油藏CO₂驱气窜通道识别方法[J].油气地质与采收率,2020,27(1):101-106.
ZHANG Shiming.Study on identification method for gas channeling of CO₂ flooding in low permeability reservoirs[J].Petroleum Geology and Recovery Efficiency,2020,27(1):101-106.
[18] 赵习森,石立华,王维波,等.非均质特低渗透油藏CO₂驱气窜规律研究[J].西南石油大学学报(自然科学版),2017,39(6):131-139.
ZHAO Xisen,SHI Lihua,WANG Weibo,et al.CO₂ channeling sealing in ultra-low-permeability reservoirs[J].Journal of Southwest Petroleum University (Science & Technology Edition),2017,39(6):131-139.
[19] 韦琦,侯吉瑞,郝宏达,等.特低渗油藏CO₂驱气窜规律研究[J].石油科学通报,2019,4(2):145-153.
WEI Qi,HOU Jirui,HAO Hongda,et al.Laboratory study of CO₂ channeling characteristics in ultra-low-permeability oil reservoirs[J].Acta Petrolei Sinica,2019,4(2):145-153.
[20] 李兆敏,张习斌,李松岩,等.氮气泡沫驱气体窜流特征实验研究[J].中国石油大学学报(自然科学版),2016,40(5):96-103.
LI Zhaomin,ZHANG Xibin,LI Songyan,et al.Experimental study on gas channeling problem of N₂ foam flooding[J].Journal of China University of Petroleum(Edition of Natural Sciences),2016,40(5):96-103.
[21] 高云丛,赵密福,王建波,等.特低渗油藏CO₂非混相驱生产特征与气窜规律[J].石油勘探与开发,2014,41(1):79-85.
GAO Yuncong,ZHAO Mifu,WANG Jianbo,et al.Performance and gas breakthrough during CO₂ immiscible flooding in ultra-low permeability reservoirs[J].Petroleum Exploration and Development,2014,41(1):79-85.
[22] YANG Wenzhe,ZHANG Liang,LIU Yu,et al.Dynamic stability characteristics of fluid flow in CO₂ miscible displacements in porous media[J].RSC Advances,2015,5(44):34839-34853.
[23] LIU Y,TENG Y,JIANG L,et al.Displacement front behavior of near miscible CO₂ flooding in decane saturated synthetic sandstone cores revealed by magnetic resonance imaging[J].Magnetic Resonance Imaging,2017,37:171-178.

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