碳酸水-原油体系中CO2分子的扩散行为

doi:10.7623/syxb202101006

石油学报 ›› 2021, Vol. 42 ›› Issue (1): 64-72.DOI: 10.7623/syxb202101006

碳酸水-原油体系中CO₂分子的扩散行为

魏兵¹, 尚晋², 蒲万芬¹, 赵金洲¹, Kadet Valeriy³

1. 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;
2. 中国石油新疆油田公司百口泉采油厂新疆克拉玛依 834000;
3. 古勃金国立石油与天然气大学俄罗斯莫斯科 119991

收稿日期:2020-04-10 修回日期:2020-11-29 出版日期:2021-01-25 发布日期:2021-02-05
通讯作者: 魏兵,男,1983年8月生,2006年获曲阜师范大学化学工程专业学士学位,2013年获加拿大新不伦瑞克大学化学工程专业博士学位,现为西南石油大学教授、博士生导师,主要从事非常规油藏提高采收率方法与理论研究。
作者简介:魏兵,男,1983年8月生,2006年获曲阜师范大学化学工程专业学士学位,2013年获加拿大新不伦瑞克大学化学工程专业博士学位,现为西南石油大学教授、博士生导师,主要从事非常规油藏提高采收率方法与理论研究。Email:bwei@swpu.edu.cn
基金资助:
国家自然科学基金面上项目"基于纤丝纳米材料（CNF）高稳泡沫驱体系的构筑及液膜夹断-分离行为研究"（No.51974265）、国家重点基础研究发展计划（973）项目"陆相致密油高效开发基础研究"（2015CB250900）和国家科技重大专项"缝洞型油藏注气方式和技术政策研究（2016ZX05053-09）"资助。

Diffusion of CO₂ molecules in the carbonated water-crude oil system

Wei Bing¹, Shang Jin², Pu Wanfen¹, Zhao Jinzhou¹, Kadet Valeriy³

1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Sichuan Chengdu 610500, China;
2. Baikouquan Oil Production Plant, PetroChina Xinjiang Oilfield Company, Xinjiang Karamay 834000, China;
3. Gubkin Russia State University of Oil and Gas, Moscow 119991, Russia

Received:2020-04-10 Revised:2020-11-29 Online:2021-01-25 Published:2021-02-05

摘要/Abstract

摘要： CO₂分子在油水相间的扩散传质行为对于致密油藏注CO₂提高采收率具有重要意义。通过融合实验测定数据和理论扩散模型，利用试错法同时确定了碳酸水-原油二元体系中CO₂分子在油、水两相中的扩散系数。重点研究了油水混合体系的初始压力对扩散系数的影响规律，深入探讨了扩散过程中油水相密度、CO₂浓度、油水界面移动以及CO₂在油相中扩散前缘位置的变化过程。研究结果表明：①随着CO₂从水相扩散进入油相，碳酸水-原油体系压力增大，60℃下，扩散10 h，初始压力分别为15.39 MPa、19.25 MPa和22.82 MPa（实验1—实验3）体系，压力增加24%~31%；②在两相界面附近，水相密度及水相中CO₂浓度逐渐降低，而油相密度及油相中的CO₂浓度逐渐升高，导致油相体积膨胀，水相体积收缩，两相界面向水相方向移动；③初始压力越高，扩散系数越大。实验1—实验3水相和油相中CO₂扩散系数的增幅分别为52.0%和9.2%，表明水相中CO₂扩散系数对初始压力更敏感；④初始压力越高，相同扩散时间内CO₂在油相中的扩散前缘运移越远，扩散100 h后，实验1—实验3前缘位置运移距离分别为4.11 cm、4.32 cm和4.43 cm。

关键词: 扩散传质, 致密油, 扩散系数, 试错法, 扩散前缘, 界面特征

Abstract: The mass transfer by diffusion of CO₂ molecules between oil and aqueous phases is of great significance to the enhanced oil recovery by CO₂ flooding in tight reservoirs. Through combining experimental measurement data with theoretical diffusion model, this paper simultaneously determines the diffusion coefficients of CO₂ molecules in oil and aqueous phases in the carbonated water-crude oil binary system using the trial-and-error method. This study focuses on the influence of initial pressure of the oil-water mixing system on the diffusion coefficient, and deeply explores the variations of the density of oil-aqueous phases, CO₂ concentration, oil-water interface movement, and CO₂ diffusion front position in the oil phase during diffusion. The results show that:(1)As CO₂ diffuses from the aqueous phase into the oil phase, the pressure of the carbonated water-crude oil system increases. After 10 hours of diffusion at 60℃, the pressure is increased by 24% to 31% for the initial pressures of 15.39,19.25 and 22.82 MPa (Experiments 1 to 3). (2)Near the two-phase interface, the density of the aqueous phase and CO₂ concentration in the aqueous phase gradually decrease, while the density of the oil phase and CO₂ concentration in the oil phase gradually increases, causing the volume of the oil phase to expand and that of the aqueous phase to shrink, and the two-phase interface moves toward the aqueous phase. (3)The higher the initial pressure, the greater the diffusion coefficient. The CO₂ diffusion coefficient in the aqueous and oil phase in experiments 1 to 3 is increased by 52% and 9.2%, respectively, indicating that the CO₂ diffusion coefficient in the aqueous phase is more sensitive to the initial pressure. (4)The higher the initial pressure, the farther the CO₂ diffusion front migrates in the oil phase within the same time period. After 100 hours of diffusion, the migrating distances of the front positions in experiment 1 to 3 are 4.11 cm, 4.32 cm and 4.43 cm, respectively.

Key words: mass transfer by diffusion, tight oil, diffusion coefficient, trial-and-error method, diffusion front, interface characteristics

中图分类号:

TE357.4

魏兵, 尚晋, 蒲万芬, 赵金洲, Kadet Valeriy. 碳酸水-原油体系中CO₂分子的扩散行为[J]. 石油学报, 2021, 42(1): 64-72.

Wei Bing, Shang Jin, Pu Wanfen, Zhao Jinzhou, Kadet Valeriy. Diffusion of CO₂ molecules in the carbonated water-crude oil system[J]. Acta Petrolei Sinica, 2021, 42(1): 64-72.

参考文献

[1] 彭军,韩浩东,夏青松,等.深埋藏致密砂岩储层微观孔隙结构的分形表征及成因机理——以塔里木盆地顺托果勒地区柯坪塔格组为例[J].石油学报,2018,39(7):775-791.
PENG Jun,HAN Haodong,XIA Qingsong,et al.Fractal characterization and genetic mechanism of micro-pore structure in deeply buried tight sandstone reservoirs:a case study of Kalpintag Formation in Shuntuoguole area,Tarim Basin[J].Acta Petrolei Sinica,2018,39(7):775-791.
[2] 毕海滨,段晓文,郑婧,等.致密油生产动态特征及可采储量评估方法[J].石油学报,2018,39(2):172-179.
BI Haibin,DUAN Xiaowen,ZHENG Jing,et al.Production dynamic characteristics and recoverable reserve estimation method of tight oil[J].Acta Petrolei Sinica,2018,39(2):172-179.
[3] 贾承造,郑民,张永峰.中国非常规油气资源与勘探开发前景[J].石油勘探与开发,2012,39(2):129-136.
JIA Chengzao,ZHENG Min,ZHANG Yongfeng.Unconventional hydrocarbon resources in China and the prospect of exploration and development[J].Petroleum Exploration and Development,2012,39(2):129-136.
[4] 樊建明,王冲,屈雪峰,等.鄂尔多斯盆地致密油水平井注水吞吐开发实践——以延长组长7油层组为例[J].石油学报,2019,40(6):706-715.
FAN Jianming,WANG Chong,QU Xuefeng,et al.Development and practice of water flooding huff-puff in tight oil horizontal well,Ordos Basin:a case study of Yanchang Formation Chang 7 oil layer[J].Acta Petrolei Sinica,2019,40(6):706-715.
[5] 蒲万芬,王崇阳,李一波,等.致密油储层CO₂驱核磁共振实验研究[J].科学技术与工程,2017,17(7):30-34.
PU Wanfen,WANG Chongyang,LI Yibo,et al.Nuclear magnetic resonance (NMR)experimental study of CO₂ flooding in tight reservoir[J].Science Technology and Engineering,2017,17(7):30-34.
[6] 魏海峰,凡哲元,袁向春.致密油藏开发技术研究进展[J].油气地质与采收率,2013,20(2):62-66.
WEI Haifeng,FAN Zheyuan,YUAN Xiangchun.Review on new advances in foreign tight oil development technology and their enlightenment[J].Petroleum Geology and Recovery Efficiency,2013,20(2):62-66.
[7] WEI Bing,GAO Hao,PU Wanfen,et al.Interactions and phase behaviors between oleic phase and CO₂ from swelling to miscibility in CO₂-based enhanced oil recovery (EOR)process:A comprehensive visualization study[J].Journal of Molecular Liquids,2017,232:277-284.
[8] 韩海水,李实,姚小琪,等.基于摩尔密度的原油-CO₂体系膨胀能力预测方法[J].石油学报,2018,39(4):456-462.
HAN Haishui,LI Shi,YAO Xiaoqi,et al.Swelling ability prediction method of crude oil-CO₂ system based on molar density[J].Acta Petrolei Sinica,2018,39(4):456-462.
[9] LEE J H,KIM G W,LEE K S.Evaluation of hybrid EOR as polymer-assisted carbonated waterflood in calcite cemented sandstone reservoir[R].OTC 28125,2017.
[10] 叶金桥.CO₂-原油-水体系相间作用及其对驱油的影响[D].青岛:中国石油大学(华东),2016.
YE Jinqiao.Phase interaction of CO₂-oil-water system and its impact on oil flooding[D].Qingdao:China University of Petroleum,2016.
[11] 于海洋,杨中林,刘俊辉,等.致密油藏碳化水驱提高采收率方法[J].大庆石油地质与开发,2019,38(2):166-174.
YU Haiyang,YANG Zhonglin,LIU Junhui,et al.EOR method by the carbonated water injection (CWI)for tight oil reservoirs[J].Petroleum Geology and Oilfield Development in Daqing,2019,38(2):166-174.
[12] ZOU Jiandong,LIAO Xinwei,CHEN Zhiming,et al.Integrated PVT and coreflooding studies of carbonated water injection in tight oil reservoirs:a case study[J].Energy & Fuels,2019,33(9):8852-8863.
[13] RIAZI M R.A new method for experimental measurement of diffusion coefficients in reservoir fluids[J].Journal of Petroleum Science and Engineering,1996,14(3/4):235-250.
[14] ZHANG Y P,HYNDMAN C L,MAINI B B.Measurement of gas diffusivity in heavy oils[J].Journal of Petroleum Science and Engineering,2000,25(1/2):37-47.
[15] LI Zhaowen,DONG Mingzhe,LI Shuliang,et al.A new method for gas effective diffusion coefficient measurement in water-saturated porous rocks under high pressures[J].Journal of Porous Media,2006,9(5):445-461.
[16] LI Songyan,WANG Yifan,ZHANG Kaiqiang,et al.Diffusion behavior of supercritical CO₂ in Micro-to nanoconfined pores[J].Industrial & Engineering Chemistry Research,2019,58(47):21772-21784.
[17] LI Songyan,QIAO Chenyu,LI Zhaomin,et al.The effect of permeability on supercritical CO₂ diffusion coefficient and determination of diffusive tortuosity of porous media under reservoir conditions[J].Journal of CO₂ Utilization,2018,28:1-14.
[18] LI Songyan,QIAO Chenyu,ZHANG Chao,et al.Determination of diffusion coefficients of supercritical CO₂ under tight oil reservoir conditions with pressure-decay method[J].Journal of CO₂ Utilization,2018,24:430-443.
[19] 李宾飞,叶金桥,李兆敏,等.高温高压条件下CO₂-原油-水体系相间作用及其对界面张力的影响[J].石油学报,2016,37(10):1265-1272.
LI Binfei,YE Jinqiao,LI Zhaomin,et al.Phase interaction of CO₂-oil-water system and its effect on interfacial tension at high temperature and high pressure[J].Acta Petrolei Sinica,2016,37(10):1265-1272.
[20] SHU Guanli,DONG Mingzhu,CHEN Shengnan,et al.Mass transfer of CO₂ in a carbonated water-oil system at high pressures[J].Industrial & Engineering Chemistry Research,2016,56(1):404-416.
[21] ZOU Jiandong,LIAO Xinwei,LI Xiaoming,et al.An experimental study on carbonated water injection of core samples from tight oil reservoirs from Ordos Basin[R].SPE 191474,2018.
[22] ZOU Jiandong,LIAO Xinwei,ZHAO Xiaoliang,et al.An experimental study of the dynamic mass transfer process during carbonated water injection[R].IPTC 190482019.
[23] ZHANG Xiang,WEI Bing,SHANG Jing,et al.Alterations of geochemical properties of a tight sandstone reservoir caused by supercritical CO₂-brine-rock interactions in CO₂-EOR and geosequestration[J].Journal of CO₂ Utilization,2018,28:408-418.
[24] BISWESWAR G,AL-HAMAIRI A,JIN S.Carbonated water injection:an efficient EOR approach.A review of fundamentals and prospects[J].Journal of Petroleum Exploration and Production Technology,2020,10(2):673-685.

碳酸水-原油体系中CO₂分子的扩散行为

Diffusion of CO₂ molecules in the carbonated water-crude oil system

PDF

可视化

摘要/Abstract

引用本文

使用本文

参考文献

相关文章 15

编辑推荐

Metrics

本文评价

[1]	付锁堂, 金之钧, 付金华, 李士祥, 杨伟伟. 鄂尔多斯盆地延长组7段从致密油到页岩油认识的转变及勘探开发意义[J]. 石油学报, 2021, 42(5): 561-569.
[2]	何媛媛, 张斌, 桂丽黎, 张国卿, 袁莉. 从原油地球化学特征看致密油聚集机制——以柴达木盆地西部扎哈泉油藏为例[J]. 石油学报, 2020, 41(9): 1060-1072.
[3]	魏兵, 陈神根, 赵金洲, 蒲万芬, 魏发林, 相华, Kadet Valeriy. 纳米纤维高稳泡沫在裂缝中的生成和运移规律[J]. 石油学报, 2020, 41(9): 1135-1145.
[4]	康毅力, 田键, 罗平亚, 游利军, 刘雪芬. 致密油藏提高采收率技术瓶颈与发展策略[J]. 石油学报, 2020, 41(4): 467-477.
[5]	李相方, 冯东, 张涛, 孙政, 何敏侠, 刘庆, 刘文远, 赵文, 李靖. 毛细管力在非常规油气藏开发中的作用及应用[J]. 石油学报, 2020, 41(12): 1719-1733.
[6]	任俊豪, 任晓海, 宋海强, 韩登林, 王晨晨, 盛广龙, 吕伟峰. 基于分子模拟的纳米孔内甲烷吸附与扩散特征[J]. 石油学报, 2020, 41(11): 1366-1375.
[7]	王付勇, 曾繁超, 赵久玉. 低渗透/致密油藏驱替-渗吸数学模型及其应用[J]. 石油学报, 2020, 41(11): 1396-1405.
[8]	孙科, 刘慧卿, 王腾, 张红玲, 谢建勇. 致密油藏压裂后衰竭开采单井可采储量预测新方法[J]. 石油学报, 2020, 41(10): 1238-1247.
[9]	冯其红, 徐世乾, 任国通, 王森, 李昱垚. 致密油多级压裂水平井井网参数分级优化[J]. 石油学报, 2019, 40(7): 830-838.
[10]	田孝茹, 张元元, 卓勤功, 于志超, 郭召杰. 准噶尔盆地玛湖凹陷下二叠统风城组致密油充注特征——碱性矿物中的流体包裹体证据[J]. 石油学报, 2019, 40(6): 646-659.
[11]	樊建明, 王冲, 屈雪峰, 成良丙, 薛婷. 鄂尔多斯盆地致密油水平井注水吞吐开发实践——以延长组长7油层组为例[J]. 石油学报, 2019, 40(6): 706-715.
[12]	王拥军, 童敏, 孙圆辉, 张元中, 袁大伟. 四川盆地大安寨段介壳灰岩致密油储层特征[J]. 石油学报, 2019, 40(1): 42-55.
[13]	毕海滨, 段晓文, 郑婧, 周明庆, 高日丽, 祁越, 梁坤, 孟昊. 致密油生产动态特征及可采储量评估方法[J]. 石油学报, 2018, 39(2): 172-179.
[14]	庞正炼, 陶士振, 张琴, 张天舒, 杨家静, 范建玮, 袁苗. 四川盆地侏罗系致密油二次运移机制与富集主控因素[J]. 石油学报, 2018, 39(11): 1211-1222.
[15]	戚超, 王晓琦, 王威, 刘洁, 妥进才, 刘可禹. 页岩储层微观裂缝三维精细表征方法[J]. 石油学报, 2018, 39(10): 1175-1185.