碳酸盐岩边水油藏线性水侵特征分析

An Analysis of Linear Water Invasion Characteristics of Carbonate Edge-water Reservoirs

摘要

假设油藏为矩形油藏，且封闭水体线性分布于油藏一侧，分别推导和建立了关于裂缝型碳酸盐岩油藏、缝洞型碳酸盐岩油藏的非稳态线性水侵模型。采用现代数学方法对模型进行求解，并编程绘制碳酸盐岩边水油藏的线性水侵曲线，对两类碳酸盐岩边水油藏的水侵曲线进行了对比分析以及绘制了无限大水体时的水侵曲线。此外，通过绘制不同参数下的缝洞型碳酸盐岩油藏水侵曲线，对该类油藏的水侵特征及水侵规律进行了分析。最后，结合塔里木盆地缝洞型碳酸盐岩边水油藏现场数据对水侵模型进行了实例应用分析。研究结果表明：1）裂缝型碳酸盐岩油藏水侵曲线后期出现一个上升阶段，缝洞型碳酸盐岩油藏水侵曲线后期出现两个上升阶段；2）窜流系数影响水侵曲线上升阶段出现的早晚；3）储集系数影响水侵曲线相应阶段位置的高低；4）水体距离影响水侵曲线后期所有阶段的位置高低；5）充分认识碳酸盐岩油藏边水水侵特征和水侵规律是合理高效开发碳酸盐岩油藏的重要保障。

Abstract

The unsteady linear water invasion models of fractured carbonate reservoir and fracture-vuggy carbonate reservoir were deduced and established respectively, assuming the reservoir was rectangular and the closed water body was linearly distributed on one side of the reservoir. Then the models were solved by modern mathematical methods, and the linear water invasion curves of carbonate edge-water reservoir were plotted. The water invasion curves of two kinds of carbonate edge-water reservoirs were compared and analyzed, and the water invasion curves of infinite water body were also drawn. In addition, the characteristics and rules of water invasion were analyzed by drawing water invasion curves of fracture-vuggy carbonate reservoirs under different parameters. Finally, the water invasion model was applied and analyzed combined with the field data of fracture-vuggy carbonate edge-water reservoir from Tarim Basin. The results show that: 1) There is one ascending stage in the late stage of water invasion curve for fracture carbonate reservoir, and two ascending stages in the late stage of water invasion curve for fracture-vuggy carbonate reservoir. 2) The interporosiy flow coefficient affects the occurrence of the ascending stage of water invasion curve. 3) Storage coefficient affects the position of the corresponding stage of water invasion curve. 4) Water distance affects the position of all stages in the late stage of water invasion curve. 5) It is an important guarantee for the rational and efficient development of carbonate reservoir to fully understand the characteristics and rules of water invasion.

关键词

矩形油藏 / 碳酸盐岩边水油藏 / 线性水侵模型 / 水侵曲线 / 水侵特征

Key words

rectangular reservoirs / carbonate edge-water reservoirs / linear water invasion model / water invasion curve / water invasion characteristics

参考文献

[1] LI Mingqiang, MA Zike, TANG Song, et al. Water invasion law of carbonate gas reservoir of Longwangmiao Formation in Moxi Area, Sichuan Basin[J]. Natural Gas Geoscience, 2024, 35(2): 366-378. doi: 10.11764/j.issn.1672-1926.2023.08.002

[2] WU Tingting, ZHU Hua, LI Longxin, et al. Water-invasion patterns and ways to deal with water in ultra-deep carbonate gas reservoirs with multiple fractures[J]. Natural Gas Exploration and Development, 2023, 46(3): 49-58. doi: 10.12055/gaskk.issn.1673-3177.2023.03.006

[3] LIU Qunming, TANG Haifa, LÜ Zhikai, et al. Study on gas-water distribution and water invasion law under different fracture development models in ultra-deep gas reservoir: Taking Keshen 2, 9 and 8 Gas Reservoirs of Tarim Basin as examples[J]. Natural Gas Geoscience, 2023, 34(6): 963-972. doi: 10.11764/j.issn.1672-1926.2023.01.004

[4] YUE Shijun, LIU Yingru, XIANG Yiwei, et al. A new method for calculating dynamic reserves and water influx of water-invaded gas reservoirs[J]. Lithologic Reservoirs, 2023, 35(5): 153-160. doi: 10.12108/yxyqc.20230515

[5] LIU Huaxun, GAO Shusheng, YE Liyou, et al. Change laws of water invasion performance in fractured-porous water-bearing gas reservoirs and key parameter calculation methods[J]. Natural Gas Industry, 2020, 40(6): 90-99. doi: 10.3787/j.issn.1000-0976.2020.06.009

[6] ZHOU Mengfei, LI Xizhe, HU Yong, et al. Physical simulation experimental technology and mechanism of water invasion in fractured-porous gas reservoir: A review[J]. Energies, 2021, 14(3): 3918. doi: 10.3390/en14133918

[7] XIE Peng, CHEN Pengyu, ZHAO Hailong, et al. Water invasion characteristics and residual gas distribution in fractured-porous carbonate reservoirs[J]. Xinjiang Petroleum Geology, 2023, 44(5): 583-591. doi: 10.7657/XJPG20230510

[8] FANG Feifei, SHEN Weijun, LI Xizhe, et al. Experimental study on water invasion mechanism of fractured carbonate gas reservoirs in Longwangmiao Formation, Moxi Block, Sichuan Basin[J]. Environmental Earth Sciences, 2019, 78(10): 316. doi: 10.1007/s12665-019-8325-x

[9] LI Lu, DU Chunhui, HOU Xianhai, et al. Application study on calculation method of water volumetric parameters of fractured-vuggy carbonate reservoir in Tahe Oilfield[J]. Journal of Guangdong University of Petrochemical Technology, 2021, 31(6): 5-8. doi: 10.3969/j.issn.2095-2562.2021.06.002

[10] LIU Xue, ZHANG Zhanhua, HUANG Jing, et al. Estimation method of natural water bodies in the fracture cavity carbonate reservoir[J]. Journal of Shaanxi University of Science & Technology, 2018, 36(4): 97-101. doi: 10.3969/j.issn.1000-5811.2018.04.018

[11] DENG Hui, YANG Shenglai, LIU Yicheng, et al. A new method for predicting water-invasion laws in fractured-vuggy carbonate gas reservoirs with bottom water[J]. Natural Gas Exploration and Development, 2023, 46(2): 37-43. doi: 10.12055/gaskk.issn.1673-3177.2023.02.005

[12] FANG Jingyuan, MA Hongli, ZENG Li, et al. Research on water invasion pattern of bedrock gas reservoir in Dongping 1 Block of Dongping Gas Field[J]. Natural Gas and Oil, 2023, 41(3): 103-110. doi: 10.3969/j.issn.1006-5539.2023.03.015

[13] XIAO Yang, CAI Zhenzhong, JIANG Tongwen, et al. The study on water drive characteristic curve of fractured-vuggy carbonate reservo[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2012, 34(6): 87-93. doi: 10.3863/j.issn.1674-5086.2012.06.012

[14] QIN Zhengshan, HE Yongming, DING Yangyang, et al. Water invasion performance and main controlling factors for edge-water gas reservoirs[J]. Lithologic Reservoirs, 2024, 36(4): 178-188. doi: 10.12108/yxyqc.20240416

[15] ZHANG Jiqun, DENG Baorong, HU Changjun, et al. Computation method for water influx in different layers of natural edge water[J]. Petroleum Exploration and Development, 2016, 43(5): 825-831. doi: 10.1016/S1876-3804(16)30098-2

[16] LIU Bin, KANG Kai, ZHANG Lei, et al. Remaining oil distribution and potential tapping in the gas-cap area of gas-cap strong edge water reservoirs: A case study of CB Oilfield in Bohai Sea[J]. Complex Hydrocarbon Reservoir, 2022, 15(4): 58-64. doi: 10.16181/j.cnki.fzyqc.2022.04.011

[17] ZHANG Yuxiang, YANG Shenglai, PANG Jieqiong, et al. Experimental study on development law of natural water flooding of layered edge water sandstone reservoirs[J]. Journal of Xi^′an Shiyou University (Natural Science) , 2020, 35(6): 45-53. doi: 10.3969/j.issn.1673-064X.2020.06.007

[18] YUE Baolin, ZHU Xiaolin, LIU Bin, et al. Research on migration law of natural energy development interface in gas cap edge water narrow oil ring reservoir[J]. Natural Gas and Oil, 2021, 39(5): 74-79. doi: 10.3969/j.issn.1006-5539.2021.05.011

[19] LI Zhongcheng, FANG Feifei, ZHAI Yujia, et al. Study on the mobility and flow mechanism of aquifer water in carbonate gas reservoirs[J]. Lithosphere, 2022, 12: 4107615. doi: 10.2113/2022/4107615

[20] HU Yong, LE Ping, GUO Chunqiu, et al. Experimental study on water invasion in full-diameter cores from fractured carbonate reservoirs[J]. Xinjiang Petroleum Geology, 2023, 44(4): 479-484. doi: 10.7657/XJPG20230413

[21] FANG Feifei, SHEN Weijun, GAO Shusheng, et al. Experimental study on the physical simulation of water invasion in carbonate gas reservoirs[J]. Applied Sciences, 2017, 7(7): 697. doi: 10.3390/app7070697

[22] CHEN Pengyu, LIU Huiqing, ZHAO Hailong, et al. Microscopic characteristics of water invasion and residual gas distribution in carbonate gas reservoirs[J]. Energy Science & Engineering, 2021, 9(11): 2151-2164. doi: 10.1002/ese3.972

[23] CHENG Hong, JIANG Lin, LI Chenggang. Experimental study on production characteristics of bottom water fractured-vuggy reservoir[J]. Geofluids, 2022, 7456697. doi: 10.1155/2022/7456697

[24] GU Shaohua, ZENG Daqian, SUN Bing, et al. High definition water intrusion numerical simulation of Puguang gas reservoir with tens of millions of grid[J]. Fault-Block Oil and Gas Field, 2020, 27(6): 774-777, 793. doi: 10.6056/dkyqt202006020

[25] GENG Shaoyang, LI Chengyong, ZHAI Shuo, et al. Modeling the mechanism of water flux in fractured gas reservoirs with edge water aquifers using an embedded discrete fracture model[J]. Journal of Energy Resources Technology, 2023, 145(3): 033002. doi: 10.1115/1.4055202

[26] STEHFEST H . Numerical inversion of laplace transforms[J]. Communications of the ACM, 1970, 13(1): 47-49.

[27] YU Qingyan, MU Zhenbao, LIU Pengcheng, et al. Calculation methods of water influx in gas reservoirs with aquifers[J]. Xinjiang Petroleum Geology, 2017, 38(5): 586-591. doi: 10.7657/XJPG20170513

[28] PANG Jin, HUO Yuchen, XU Shenhao, et al. Prediction method for water invasion in carbonate gas reservoir with bottom water before water breakthrough[J]. Special Oil & Gas Reservoirs, 2025, 32(3): 86-93. doi: 10.3969/j.issn.1006-6535.2025.03.010

[29] XUE Ting, JI Yu, CHENG Liangbing, et al. A new method for determining dynamic reserves and water energy in water drive gas reservoir[J]. Petroleum Geology & Oilfield Development in Daqing, 2022, 41(1): 63-68. doi: 10.19597/j.issn.1000-3754.202101034