Numerical Well Testing Analysis of Multi-well Interference from Multi-fractured Horizontal Wells

doi:10.11885/j.issn.1674-5086.2023.09.08.02

Abstract

Abstract: Interwell interference cannot be ignored especially in tight and unconventional oil and gas reservoirs since adjacent wells may be communicated through natural fractures or even hydraulic fractures due to tight well spacing. Currently, the well testing models are focused on an individual well with simple fractures. It lacks the well testing model considering multiple wells with complex fracture networks. It is necessary to develop the numerical well testing method of multi-well interference, and analyze the impact of adjacent wells and fracture network parameters on the pressure transient behavior of the observed wells. Thus, this work proposes a numerical well test model of multiple fractured horizontal wells with complex fracture networks. The accuracy and advantages of the proposed model are validated. The effect of well interference, adjacent well's production, nonuniform fracture aperture, fracture networks, fracture conductivity of hydraulic and natural fractures on the pressure transient behavior are analyzed. Well-developed natural fractures lead to better interwell connectivity, and the adjacent wells influence the fracture linear flow, fracture radial flow, elliptical flow, and final radial flow period. When the natural fractures are not well developed, the adjacent wells affect the middle and late pressure behavior of the observation well. The developed multiwell numerical well testing model in this work considers the complex fracture networks, irregular fractures, nonuniform gas production profile, and interwell interference, which can characterize early pressure behavior and pressure differences among matrix, fracture and other grids more clearly. It enriches the numerical well testing analysis method of tight and unconventional oil and gas reservoirs.

Key words: tight oil and gas reservoirs, multi-fractured horizontal wells, complex fracture networks, multi-well interference, numerical well testing, pressure behavior analysis

CLC Number:

TE353

HE Youwei, CHEN Zhangchi, TANG Yong, ZHAO Guoqing, WU Keyu. Numerical Well Testing Analysis of Multi-well Interference from Multi-fractured Horizontal Wells[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2025, 47(4): 96-112.

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URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2023.09.08.02

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2025/V47/I4/96

References

[1] PUCHYR P J. A numerical well test model[C]. SPE 21815-MS, 1991. doi: 10.2118/21815-MS
[2] 孙双双，何勇明，邓美洲，等. 基于孔隙结构分形维数的水驱气藏见水井产能预测模型[J]. 西安石油大学学报（自然科学版）， 2024， 39（3）:62-67， 107. doi: 10.3969/j.issn.1673-064X.2024.04.009 SUN Shuangshuang, HE Yongming, DENG Meizhou, et al. Productivity prediction model for water-breakthrough gas wells in water-flooding gas reservoirs based on fractal dimension of pore structure[J]. Journal of Xi'an Shiyou University (Natural Science Edition), 2024, 39(3): 62-67, 107. doi: 10.3969/j.issn.1673-064X.2024.04.009
[3] 姚军，吴明录. 部分射开井流线数值试井解释模型及压力响应[J]. 石油勘探与开发， 2009， 36（4）:513-518. doi: 10.3321/j.issn:1000-0747.2009.04.017 YAO Jun, WU Minglu. Streamline numerical well-testing interpretation model and pressure response for partially perforated wells[J]. Petroleum Exploration and Development, 2009, 36(4): 513-518. doi: 10.3321/j.issn:10000747.2009.04.017
[4] 姚军，吴明录，胡航. 碱-聚合物复合驱油藏流线数值试井解释模型及其应用[J]. 石油学报， 2008， 29（6）:894-898， 902. doi: 10.7623/syxb200806020 YAO Jun, WU Minglu, HU Hang. Streamline numerical well-testing interpretation model for alkaline-polymer combination flooding reservoirs and its application[J]. Acta Petrolei Sinica, 2008, 29(6): 894-898, 902. doi: 10.7623/syxb200806020
[5] 姚军，吴明录，戴卫华，等. 流线数值试井解释模型[J]. 石油学报， 2006， 27（3）:96-99. doi: 10.7623/syxb200603021 YAO Jun, WU Minglu, DAI Weihua, et al. Streamline numerical well test interpretation model[J]. Acta Petrolei Sinica, 2006, 27(3): 96-99. doi: 10.7623/syxb200603021
[6] 吕秀凤，刘振宇，张瞳阳. 数值试井分析的有限元法[J]. 大庆石油学院学报， 2005， 29（5）:16-19. doi: 10.3969/j.issn.2095-4107.2005.05.005 LÜ Xiufeng, LIU Zhenyu, ZHANG Tongyang. Finite element method of the numerical well test analysis[J]. Journal of Daqing Petroleum Institute, 2005, 29(5): 16-19. doi: 10.3969/j.issn.2095-4107.2005.05.005
[7] 樊冬艳. 基于离散裂缝模型分段压裂水平井试井理论及解释方法研究[D]. 青岛:中国石油大学（华东）， 2013. FAN Dongyan. Well test theory and interpretation method of multi-fractured horizontal wells based on the discrete fracture model[D]. Qingdao: China University of Petroleum, 2013.
[8] 王培玺. 低渗透油藏压裂水平井试井解释方法研究[D]. 青岛:中国石油大学（华东）， 2012. WANG Peixi. Research on well testing interpretation method of fractured horizontal well in low permeability reservoirs[D]. Qingdao: China University of Petroleum, 2012.
[9] JACKSON R R, BANERJEE R. Advances in multilayer reservoir testing and analysis using numerical well testing and reservoir simulation[C]. SPE 62917-MS, 2000. doi: 10.2118/62917-MS
[10] 杨坚，姚军，王子胜，等. 底水碳酸盐岩油藏数值试井模型及其应用[J]. 油气地质与采收率， 2006， 13（6）:63-65. doi: 10.3969/j.issn.1009-9603.2006.06.019 YANG Jian, YAO Jun, WANG Zisheng, et al. Numerical well test model of bottomwater carbonate reservoir and its application[J]. Petroleum Geology and Recovery Efficiency, 2006, 13(6): 63-65. doi: 10.3969/j.issn.10099603.2006.06.019
[11] 咸玉席，陈超峰，封猛，等. 页岩油藏裂缝网络多相渗流数值模拟研究[J]. 石油钻探技术， 2021， 49（5）:94-100. doi: 10.11911/syztjs.2021090 XIAN Yuxi, CHEN Chaofeng, FENG Meng, et al. Numerical simulation of multiphase flow in fracture networks in shale oil reservoir[J]. Petroleum Drilling Techniques, 2021, 49(5): 94-100. doi: 10.11911/syztjs.2021090
[12] 李玉坤. 复杂断块油藏无网格数值试井[D]. 青岛:中国石油大学（华东）， 2007. LI Yukun. Meshless numerical well-test on complex faultblock reservoir[D]. Qingdao: China University of Petroleum, 2007.
[13] 廖新维，刘立明. 三维两相流数值试井模型[J]. 石油大学学报（自然科学版）， 2003， 27（6）:42-44. doi: 10.3321/j.issn:1000-5870.2003.06.012 LIAO Xinwei, LIU Liming. Three-dimensional two-phase flow numerical well testing model[J]. Journal of the University of Petroleum, China, 2003, 27(6): 42-44. doi: 10.3321/j.issn:1000-5870.2003.06.012
[14] 何佑伟，贺质越，汤勇，等. 基于机器学习的页岩气井产量评价与预测[J]. 石油钻采工艺， 2021， 43（4）:518-524. doi: 10.13639/j.odpt.2021.04.016 HE Youwei, HE Zhiyue, TANG Yong, et al. Shale gas well production evaluation and prediction based on machine learning[J]. Oil Drilling & Production Technology, 2021,43(4): 518-524. doi: 10.13639/j.odpt.2021.04.016
[15] 张庆，何封，何佑伟. 基于机器学习的页岩气井井间干扰评价及预测[J]. 油气藏评价与开发， 2022， 12（3）:487-495. doi: 10.13809/j.cnki.cn32-1825/te.2022.03.011 ZHANG Qing, HE Feng, HE Youwei. Well interference evaluation and prediction of shale gas wells based on machine learning[J]. Petroleum Reservoir Evaluation and Development, 2022, 12(3): 487-495. doi: 10.13809/j.cnki.cn32-1825/te.2022.03.011
[16] 刘曰武，陈慧新，张大为，等. 存在邻井影响条件下的油井数值试井分析[J]. 油气井测试， 2002， 11（5）:4-7. doi: 10.3969/j.issn.1004-4388.2002.05.002 LIU Yuewu, CHEN Huixin, ZHANG Dawei, et al. Numerical well test analysis of oil wells under the influence of adjacent wells[J]. Well Testing, 2002, 11(5): 4-7. doi: 10.3969/j.issn.1004-4388.2002.05.002
[17] 张烈辉，向祖平，李允，等. 井间干扰对油水两相流数值试井曲线的影响[J]. 水动力学研究与进展（A辑）， 2006， 21（6）:805-810. doi: 10.3969/j.issn.1000-4874.2006.06.017 ZHANG Liehui, XIANG Zuping, LI Yun, et al. The interwell interference effect on numerical well test curve of oil-water-ph[J]. Chinese Journal of Hydrodynamics, 2006, 21(6): 805-810. doi: 10.3969/j.issn.1000-4874.2006.06.017
[18] 万义钊，刘曰武，吴能友，等. 基于离散裂缝的多段压裂水平井数值试井模型及应用[J]. 力学学报， 2018， 50（1）:147-156. doi: 10.6052/0459-1879-17-319 WAN Yizhao, LIU Yuewu, WU Nengyou, et al. A numerical well test model for multi-fractured horizontal wells based on discrete-fracture model and its application[J]. Chinese Journal of Theoretical and Applied Mechanics, 2018, 50(1): 147-156. doi: 10.6052/0459-1879-17-319
[19] 褚洪杨. 致密油藏多段压裂水平井存在井间干扰下试井分析方法研究[D]. 北京:中国石油大学（北京）， 2021. ZHU Hongyang. Well test analysis for multiple multifractured horizontal wells in tight oil reservoirs with well interference[D]. Beijing: China University of Petroleum, 2021.
[20] 王慧萍，吴嘉鑫，王锋，等. 考虑缝间流量不对称的裂缝井干扰试井分析方法[J]. 科学技术与工程， 2021， 21（2）:529-537. doi: 10.3969/j.issn.1671-1815.2021.02.016 WANG Huiping, WU Jiaxin, WANG Feng, et al. Interference well-test model for fractured well considering rate asymmetry along fracture wings[J]. Science Technology and Engineering, 2021, 21(2): 529-537. doi: 10.3969/j.issn.1671-1815.2021.02.016
[21] 何佑伟，谢义翔，乔宇，等. 非常规油气藏不规则复杂裂缝表征方法[J]. 石油实验地质， 2024， 46（4）:748-759. doi: 10.11781/sysydz202404748 HE Youwei, XIE Yixiang, QIAO Yu, et al. Characterization of irregular complex fractures in unconventional oil and gas reservoirs[J]. Petroleum Geology & Experiment, 2024, 46(4): 748-759. doi: 10.11781/sysydz202404748
[22] 叶义平，钱根葆，徐有杰，等. 页岩油压裂水平井变导流能力试井模型研究[J]. 西南石油大学学报（自然科学版）， 2021， 43（1）:111-119. doi: 10.11885/j.issn.16745086.2019.10.09.04 YE Yiping, QIAN Genbao, XU Youjie, et al. Well test analysis of multi-stage horizontal well with varying conductivity in naturally fractured shale oil reservoir[J]. Journal of Southwest Petroleum University (Science & Technology Edition), 2021, 43(1): 111-119. doi: 10.11885/j.issn.16745086.2019.10.09.04
[23] KARIMI-FARD M, DURLOFSKY L J, AZIZ K. An efficient discrete fracture model applicable for general purpose reservoir simulators[J]. SPE 79699-MS, 2003. doi: 10.2523/79699-MS