Micro Mechanism of Oil Displacement by Water Gas Dispersion System

doi:10.11885/j.issn.1674-5086.2022.09.30.02

Abstract

Abstract: Low permeability reservoirs have small pores, fine throats and large seepage resistance, and the recovery percent of conventional water drive is only about 20%. Gas injection development is not only limited by gas sources, but also seriously affected by gas channeling and other problems; therefore, it is urgent to develop key technologies to continuously improve oil recovery in low permeability reservoirs. The oil displacement technology of water gas dispersion system is a new technology to improve oil recovery. This technology can realize the control of seepage resistance and supplement energy at the same time, thus greatly improving the water displacement efficiency of low permeability reservoirs. In order to understand the micro oil displacement mechanism of water gas dispersion system, the flow characteristics and distribution laws of fluid in the displacement process were recorded, identified and quantitatively calculated through water drive, gas drive and water gas dispersion system oil displacement experiments by means of micro etching model, high-speed camera acquisition and ImagePro-Plus6.0 software identification. The experimental study shows that the main producing area of water drive is the main channel, and the remaining oil is mainly distributed in the edges and corners of the model; the characteristics of CO₂ gas channeling are obvious, the gas mainly flowing in the pore center and forming a water/oil film on the pore wall; the most remarkable feature of water gas dispersion system for oil displacement is that it mixes with the oil phase “highly” after entering the pores. The mixed microbubbles can not only produce “plugging” effect, increasing the seepage resistance of the main channel, but also promote the subsequent fluid to change direction and enter the small pores that are not swept by water drive or gas drive, with obvious effect of expanding the swept volume. And it can significantly displace the remaining oil at the edges and corners, and even recover all the residual oil in the blind end. The oil recovery efficiency of water drive, gas drive and water gas dispersion system drive is 71.6%, 82.0% and 91.0%, and water gas dispersion system plays a prominent role in improving oil displacement efficiency.

Key words: micro mechanism, water gas dispersion system, seepage resistance, swept volume, oil displacement efficiency

CLC Number:

TE311

SHANG Zhenhao, WU Jiazhong, XIONG Wei, ZHANG Moxi, CHEN Xinglong. Micro Mechanism of Oil Displacement by Water Gas Dispersion System[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2025, 47(3): 112-123.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2022.09.30.02

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2025/V47/I3/112

References

[1] 李道品. 低渗透油田开发概论[J]. 大庆石油地质与开发, 1997(3): 36-40, 79. doi: 10.19597/j.issn.1000-3754.1997.03.010 LI Daopin. Introduction to low permeability oilfield development[J]. Petroleum Geology & Oilfield Development in Daqing, 1997(3): 36-40, 79. doi: 10.19597/j.issn.1000-3754.1997.03.010
[2] 李道品,罗迪强,刘雨芬,等. 低渗透砂岩油田开发[M]. 北京:石油工业出版社, 1997. LI Daopin, LUO Diqiang, LIU Xufen, et al. Development of low permeability sandstone oilfield[M]. Beijing: Petroleum Industry Press, 1997.
[3] 李道品,张连春. 开发低渗透油田莫失良机[J]. 中国石油企业, 2004(12): 44-45. doi: 10.3969/j.issn.1672-4267.2004.12.013 LI Daopin, ZHANG Lianchun. Seize the opportunity to develop low permeability oilfields[J]. China Petroleum Enterprise, 2004(12): 44-45. doi: 10.3969/j.issn.1672-4267.2004.12.013
[4] 李阳. 低渗透油藏CO₂ 驱提高采收率技术进展及展望[J]. 油气地质与采收率, 2020, 27(1): 1-10. doi: 10.13673/j.cnki.cn37-1359/te.2020.01.001 LI Yang. Technical advancement and prospect for CO₂ flooding enhanced oil recovery in low permeability reservoirs[J]. Petroleum Geology and Recovery Efficiency, 2020, 27(1): 1-10. doi: 10.13673/j.cnki.cn37-1359/te.2020.01.001
[5] 曹静静,杨矞琦. 国内低渗透油藏提高采收率技术现状及展望[J]. 四川化工, 2017, 20(6): 17-21. CAO Jingjing, YANG Yuqi. The present situation and prospect of enhancing low permeability reservoir recovery technology in China[J]. Sichuan Chemical Industry, 2017, 20(6): 17-21.
[6] 王成俊,洪玲,高瑞民,等. 低渗透油藏提高采收率技术现状与挑战[J]. 非常规油气, 2018, 5(3):102-108. doi: 10.3969/j.issn.2095-8471.2018.03.018 WANG Chengjun, HONG Ling, GAO Ruimin, et al. Current status and challenges of enhanced oil recovery technologies for low permeability reservoirs[J]. Unconventional Oil & Gas, 2018, 5(3): 102-108. doi: 10.3969/j.issn.2095-8471.2018.03.018
[7] 潘凌,方全堂,段永刚. 低渗油藏非均质性对采收率的影响因素研究[J]. 西南石油大学学报(自然科学版), 2012, 34(3): 111-115. doi: 10.3863/j.issn.1674-5086.2012.03.016 PAN Ling, FANG Quantang, DUAN Yonggang. Mechanism research of the impact of heterogeneity on the low permeability reservoir recovery[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2012, 34(3): 111-115. doi: 10.3863/j.issn.1674-5086.2012.03.016
[8] 孙永鹏,陈超,戴彩丽,等. 特低渗油藏活性流体压驱提高采收率机制[J]. 中国石油大学学报(自然科学版), 2024, 48(6): 141-148. doi: 10.3969/j.issn.1673-5005.2024.06.015 SUN Yongpeng, CHEN Chao, DAI Caili, et al. Enhanced oil recovery mechanisms of active fluid high-pressure flooding in ultra-low permeability oil reservoirs[J]. Journal of China University of Petroleum (Edition of Natural Science), 2024, 48(6): 141-148. doi: 10.3969/j.issn.1673-5005.2024.06.015
[9] 刘创新,高红艳,秦德文,等. 地应力—岩石力学分析在东海低渗透致密砂岩气藏水平井压裂中的应用[J]. 世界石油工业, 2024, 31(3): 78-89. doi: 10.20114/j.issn.1006-0030.20240429001 LIU Chuangxin, GAO Hongyan, QIN Dewen, et al. Insitu stress and rock mechanics analysis in the application of hydraulic fracturing for horizontal wells in the low-permeability and tight sandstone gas reservoirs of the East China Sea[J]. World Petroleum Industry, 2024, 31(3): 78-89. doi: 10.20114/j.issn.1006-0030.20240429001
[10] 伍家忠,韩海水,王秉合,等. 低渗透储层油/水/岩相互作用机制及离子匹配提高采收率方法
[J]. 中国石油大学学报(自然科学版), 2023, 47(1): 116-124. doi: 10.3969/j.issn.1673-5005.2023.01.012 WU Jiazhong, HAN Haishui, WANG Binghe, et al. Interaction of reservoir oil/water/rock and EOR method of ion matching in low permeability reservoir[J]. Journal of China University of Petroleum (Edition of Natural Science), 2023, 47(1): 116-124. doi: 10.3969/j.issn.1673-5005.2023.01.012
[11] 刘辉,李楠,汪周华,等. 低渗灰岩油藏气水均衡驱替主控参数合理界限及开发效果评价
[J]. 中国石油大学学报(自然科学版), 2024, 48(5): 115-121. doi: 10.3969/j.issn.1673-5005.2024.05.012 LIU Hui, LI Nan, WANG Zhouhua, et al. Reasonable limits of main controlling parameters for balanced displacement by gas-water injection in low permeability limestone reservoirs and their performance evaluation[J]. Journal of China University of Petroleum (Edition of Natural Science), 2024, 48(5): 115-121. doi: doi: 10.3969/j.issn.1673-5005.2024.05.012
[12] 邓晓辉,许晶禹,吴应湘,等. 动态微气泡浮选除油技术研究[J]. 工业水处理, 2011, 31(4): 89-90. doi: 10.3969/j.issn.1005-829X.2011.04.027 DENG Xiaohui, XU Jingyu, WU Yingxiang, et al. Research on the technology of oil removal by dynamic state micro-bubbles flotation[J]. Industrial Water Treatment, 2011, 31(4): 89-90. doi: 10.3969/j.issn.1005-829X.2011.04.027
[13] 薛自求,大隅多加志,小出仁. 利用弹性波检测多孔质饱和砂岩中的二氧化碳流动状态[J]. 岩石力学与工程学报, 2003, 22(6): 1002-1007.doi: 10.3321/j.issn:1000-6915.2003.06.021 XUE Ziqiu, OHSUMI TAKASHI, KOIDE HITOSHI. Seismic wave velocity monitoring of CO₂ migration in porous sandstones saturated with water[J]. Chinese Journal of Rock Mechanics and Engineering, 2003, 22(6): 1002-1007. doi: 10.3321/j.issn:1000-6915.2003.06.021
[14] 汪周华,范琨鹏,赵建飞,等. 非常规储层微纳米孔隙介质中流体相态研究进展[J]. 世界石油工业, 2024, 31(3): 68-77. doi: 10.20114/j.issn.1006-0030.20231017001 WANG Zhouhua, FAN Kunpeng, ZHAO Jianfei, et al. Research progress of fluid phase behavior in micro-nano porous media of unconventional reservoirs[J]. World Petroleum Industry, 2024, 31(3): 68-77. doi: 10.20114/j.issn.1006-0030.20231017001
[15] 陈兴隆,伍家忠,韩海水,等. 水气分散体系的超声波振荡生成方法及驱油实验研究[J]. 天然气与石油, 2021, 39(4): 48-52. doi: 10.3969/j.issn.1006-5539.2021.04.009 CHEN Xinglong, WU Jiazhong, HAN Haishui, et al. Formation of gas bubble-water dispersion system using ultrasonic vibration method and research on its impact on ultimate oil recovery[J]. Natural Gas and Oil, 2021, 39(4): 48-52. doi: 10.3969/j.issn.1006-5539.2021.04.009
[16] 俞宏伟,李实,陈兴隆,等. 微分散驱油体系流动性能实验评价[J]. 科学技术与工程, 2013, 13(22): 6426-6429.doi: 10.3969/j.issn.1671-1815.2013.22.012 YU Hongwei, LI Shi, CHEN Xinglong, et al. The evaluation of flow properties for differential oil flooding system[J]. Science Technology and Engineering, 2013, 13(22): 6426-6429. doi: 10.3969/j.issn.1671-1815.2013.22.012
[17] 俞宏伟,马德胜,李实,等. 水气分散体系提高采收率实验研究[J]. 科学技术与工程, 2013, 13(33): 9946-9949.doi: 10.3969/j.issn.1671-1815.2013.33.029 YU Hongwei, MA Desheng, LI Shi, et al. Experimental study of enhance oil recovery by water-gas dispersion flooding system[J]. Science Technology and Engineering, 2013, 13(33): 9946-9949. doi: 10.3969/j.issn.1671-1815.2013.33.029
[18] ZHU Wenxin, ZHENG Xiuhua, LI Guomin. Micro-bubbles size, rheological and filtration characteristics of Colloidal Gas Aphron (CGA) drilling fluids for high temperature well: Role of attapulgite[J]. Journal of Petroleum Science and Engineering, 2020, 186: 106683. doi: 10.1016/j.petrol.2019.106683
[19] LIU Nannan, CHEN Xingdong, JU Binshan, et al. Microbubbles generation by an orifice spraying method in a water-gas dispersion flooding system for enhance oil recovery[J]. Journal of Petroleum Science and Engineering, 2021, 198: 108196. doi: 10.1016/j.petrol.2020.108196
[20] 贾忠伟,杨清彦,兰玉波,等. 水驱油微观物理模拟实验研究[J]. 大庆石油地质与开发, 2002, 21(1): 46-49, 83. doi: 10.3969/j.issn.1000-3754.2002.01.014 JIA Zhongwei, YANG Qingyan, LAN Yubo, et al. Experimental study on the process of water-oil displacement with the micro-model[J]. Daqing Petroleum Geology and Development, 2002, 21(1): 46-49, 83. doi: 10.3969/j.issn.1000-3754.2002.01.014
[21] SHI Xingwang, YANG Zhengming, ZHANG Yapu, et al. Experimental study on multilayer waterflooding in lowpermeability carbonate reservoirs by NMR[C]. Chengdu: International Field Exploration and Development Conference, 2017. doi: 10.1007/978-981-10-7560-5_13
[22] 王瑞飞,孙卫,杨华. 特低渗透砂岩油藏水驱微观机理[J]. 兰州大学学报(自然科学版), 2010, 46(6): 29-33. doi: 10.13885/j.issn.0455-2059.2010.06.012 WANG Ruifei, SUN Wei, YANG Hua. Micro mechanism of water drive in ultra-low permeability sandstone reservoir[J]. Journal of Lanzhou University (Natural Sciences Edition), 2010, 46(6): 29-33. doi: 10.13885/j.issn.0455-2059.2010.06.012
[23] 沈瑞,赵芳,高树生,等. 低渗透纵向非均质油层水驱波及规律实验研究[J]. 油气地质与采收率, 2013, 20(4): 91-93, 117. doi: 10.3969/j.issn.1009-9603.2013.04.023 SHEN Rui, ZHAO Fang, GAO Shusheng, et al. Experimental study on waterflood front and regularity of low permeability longitudinal heterogeneous oil reservoir[J]. Oil & Gas Geology and Recovery Efficiency, 2013, 20(4): 91-93, 117. doi: 10.3969/j.issn.1009-9603.2013.04.023
[24] 宋广寿,高辉,高静乐,等. 西峰油田长8储层微观孔隙结构非均质性与渗流机理实验[J]. 吉林大学学报(地球科学版), 2009, 39(1): 53-59. doi: 10.13278/j.cnki.jjuese.2009.01.016 SONG Guangshou, GAO Hui, GAO Jingle, et al. Experimental study on microscopic pore structure heterogeneity and permeation mechanism of Chang 8 reservoir in Xifeng Oilfield[J]. Journal of Jilin University (Earth Science Edition), 2009, 39(1): 53-59. doi: 10.13278/j.cnki.jjuese.2009.01.016
[25] 吴聃,鞠斌山,陈常红,等. 基于微观驱替实验的剩余油表征方法研究[J]. 中国科技论文, 2015, 10(23): 2707-2710, 2715. doi: 10.3969/j.issn.2095-2783.2015.23.003 WU Dan, JU Binshan, CHEN Changhong, et al. Research on characterization method for residual oil based on microscopic displacement experiments[J]. China Science and Technology Paper, 2015, 10(23): 2707-2710, 2715. doi: 10.3969/j.issn.2095-2783.2015.23.003
[26] 邵东波,谢先奎,张高源,等. 超低渗透砂岩油藏微观渗流特征及驱油效率的影响因素[J]. 地球物理学进展, 2017, 32(4): 1628-1635.doi: 10.6038/pg20170429 SHAO Dongbo, XIE Xiankui, ZHANG Gaoyuan, et al. Micro-flow characteristics and influencing factors of oil displacement efficiency in ultra-low permeability sandstone reservoir[J]. Progress in Geophysics, 2017, 32(4): 1628-1635. doi: 10.6038/pg20170429
[27] LI Wen, YU Hongwei, YANG Zhengming, et al. Experimental study on the sweep law of CO₂ miscible flooding in heterogeneous reservoir in Jilin[J]. Energies, 2022, 15: 5755. doi: 10.3390/en15155755
[28] 秦积舜,韩海水,刘晓蕾. 美国CO₂ 驱油技术应用及启示[J]. 石油勘探与开发, 2015, 42(2): 209-216. doi: 10.11698/PED.2015.02.10 QIN Jishun, HAN Haishui, LIU Xiaolei. Application and enlightenment of carbon dioxide flooding in the United States of America[J]. Petroleum Exploration and Development, 2015, 42(2): 209-216. doi: 10.11698/PED.2015.02.10
[29] 孙长宇,王文强,陈光进,等. 注CO₂ 油气藏流体体系油/水和油/气界面张力实验研究[J]. 中国石油大学学报(自然科学版), 2006, 30(5): 109-112. doi: 10.3321/j.issn:1000-5870.2006.05.026 SUN Changyu, WANG Wenqiang, CHEN Guangjin, et al. Interfacial tension experiment of oil and water, oil and gas for CO₂ injected reservoir fluid system[J]. Journal of China University of Petroleum (Edition of Natural Science), 2006, 30(5): 109-112. doi: 10.3321/j.issn:10005870.2006.05.026
[30] 王宏,梁凯强,杨红,等. 延长油田低渗透油藏二氧化碳驱油影响因素室内实验研究[J]. 广东化工, 2017, 44(8): 76-78, 64. WANG Hong, LIANG Kaiqiang, YANG Hong, et al. The laboratory investigation of CO₂ flooding influence factors for low-permeability reservoir in Yanchang Oilfield[J]. Guangdong Chemical Industry, 2017, 44(8): 76-78, 64.
[31] 祝春生,程林松. 低渗透油藏CO₂ 驱提高原油采收率评价研究[J]. 钻采工艺, 2007, 30(6): 55-57. doi: 10.3969/j.issn.1006-768X.2007.06.020 ZHU Chunsheng, CHENG Linsong. Research on CO₂ flooding in low permeability reservoir[J]. Drilling and Production Technology, 2007, 30(6): 55-57. doi: 10.3969/j.issn.1006-768X.2007.06.020
[32] 陈兴隆,韩海水,李实,等. CO₂ 启动盲端孔隙残余油的微观特征[J]. 油气地质与采收率, 2020, 27(1): 50-56. doi: 10.13673/j.cnki.cn37-1359/te.2020.01.007 CHEN Xinglong, HAN Haishui, LI Shi, et al. Microscopic characteristics of residual oil in dead-end pores initiated by CO₂[J]. Oil & Gas Geology and Recovery Efficiency, 2020, 27(1): 50-56. doi: 10.13673/j.cnki.cn371359/te.2020.01.007
[33] 廖长霖,廖新维,赵晓亮,等. 低渗透非均质性油藏扩大波及体积技术[J]. 大庆石油地质与开发, 2013, 32(5): 118-122. doi: 10.3969/J.ISSN.1000-3754.2013.05.024 LIAO Changlin, LIAO Xinwei, ZHAO Xiaoliang, et al. Technique of enlarging the swept volume in lowpermeability heterogeneous oil reservoirs[J]. Daqing Petroleum Geology and Development, 2013, 32(5): 118-122. doi: 10.3969/J.ISSN.1000-3754.2013.05.024
[34] 殷代印,房雨佳,辛勇亮. 低渗透油藏改变驱替方向微观机理研究[J]. 特种油气藏, 2017, 24(3): 59-63. doi: 10.3969/j.issn.1006-6535.2017.03.011 YIN Daiyin, FANG Yujia, XIN Yongliang. Study on microscopic mechanism of Changing displacement direction in low-permeability reservoirs[J]. Special Oil & Gas Reservoirs, 2017, 24(3): 59-63. doi: 10.3969/j.issn.1006-6535.2017.03.011
[35] CHEN D K, CHEN Z H, ZHAO Z S, et al. The local resistance of gas-liquid twophase flow through an orifice[J]. International Journal of Heat and Fluid Flow, 2012, 7(3): 231-238. doi: 10.1016/0142-727X(86)90027-5
[36] WANG Keliang, LI Xue, SUN Shujie, et al. The screening of oil resistant foaming agents and oil displacement effect evaluation of foam flooding[J]. Applied Mechanics and Materials, 2014, 694: 354-358. doi: 10.4028/www.scientific.net/AMM.694.354
[37] 王哲,曹广胜,白玉杰,等. 低渗透油藏提高采收率技术现状及展望[J]. 特种油气藏, 2023, 30(1): 1-13. doi: 10.3969/j.issn.1006-6535.2023.01.001 WANG Zhe, CAO Guangsheng, BAI Yujie, et al. Development status and prospect of EOR technology in lowpermeability reservoirs[J]. Special Oil & Gas Reservoirs, 2023, 30(1): 1-13. doi: 10.3969/j.issn.1006-6535.2023.01.001
[38] 汪洋,黄延明,同鑫,等. 剩余油研究方法综述[J]. 特种油气藏, 2023, 30(1): 14-21. doi: 10.3969/j.issn.1006-6535.2023.01.002 WANG Yang, HUANG Yanming, TONG Xin, et al. Review of remaining oil research methods[J]. Special Oil & Gas Reservoirs, 2023, 30(1): 14-21. doi: 10.3969/j.issn.1006-6535.2023.01.002
[39] 任梦瑶,石强,辛骅志,等. 砾岩油藏水驱剩余油分布特征及技术对策[J]. 特种油气藏, 2023, 30(1): 147-153. doi: 10.3969/j.issn.1006-6535.2023.01.021 REN Mengyao, SHI Qiang, XIN Huazhi, et al. Characteristics of remaining oil distribution in conglomerate reservoirs after water flooding and technical countermeasures[J]. Special Oil & Gas Reservoirs, 2023, 30(1): 147-153. doi: 10.3969/j.issn.1006-6535.2023.01.021
[40] 刘薇薇,陈少勇,曹伟,等. 不同驱替阶段微观剩余油赋存特征及影响因素[J]. 特种油气藏, 2023, 30(3): 115-122. doi: 10.3969/j.issn.1006-6535.2023.02.014 LIU Weiwei, CHEN Shaoyong, CAO Wei, et al. Occurrence characteristics and influencing factors of micro remaining oil in different displacement stages[J]. Special Oil & Gas Reservoirs, 2023, 30(3): 115-122. doi: 10.3969/j.issn.1006-6535.2023.02.014