Interpretation Model of Gas-injected Tracer for Well Groups in Fracture-vuggy Reservoirs

doi:10.11885/j.issn.1674-5086.2020.11.15.01

Abstract

Abstract: The conventional gas injection tracer interpretation method for sandstone reservoirs is based on the assumption of continuum, which is not suitable for large-scale fracture-vuggy reservoirs with discrete combinations of fractures and caves. A physical and mathematical model of gas tracer interpretation between injection and production wells in fractured-vuggy reservoirs has been established. The model considers the radial migration and diffusion of gas tracers in large-scale cave areas and the transmission of one-dimensional migration and two-dimensional diffusion in fractures. In this way, the distribution coefficient between wells, phases, and fractures are introduced. The model is solved and the theoretical recovery curve of gas tracer concentration is drawn. The parameter sensitivity analysis of the model is carried out, and the influence of the size of the cavern, the number and length of fractures, the diffusion coefficient, the gas injection rate, and the amount of tracer injection on the output curve is explored. Studies have shown that the larger the cave, the later the peak of the concentration curve appears; the longer the crack length, the lagging of the peak, the more the number of bars and the more the peak. The measured response curve of gas injection tracer in the TK425 Well Group of Tahe Oilfield is fitted and interpreted, and the volume of the karst cave area and the fracture channel between injection and production wells are calculated. The gas injection tracer interpretation model for fractured-vuggy reservoirs can effectively determine the connectivity between wells, calculate formation parameters, understand the distribution of reservoirs, and provide theoretical support for gas injection to improve recovery.

Key words: fracture-vuggy reservoir, gas tracer, dynamic monitoring, discrete fracture-cavity combination, migration and diffusion

CLC Number:

TE331

LIU Xueli, ZOU Ning, LIU Jianyi, XIANG Rui, LIU Zhibin. Interpretation Model of Gas-injected Tracer for Well Groups in Fracture-vuggy Reservoirs[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2023, 45(1): 81-88.

0
/ / Recommend

Add to citation manager EndNote|Ris|BibTeX

URL: http://journal15.magtechjournal.com/Jwk_xnzk/EN/10.11885/j.issn.1674-5086.2020.11.15.01

http://journal15.magtechjournal.com/Jwk_xnzk/EN/Y2023/V45/I1/81

References

[1] 李阳,范智慧. 塔河奥陶系碳酸盐岩油藏缝洞系统发育模式与分布规律[J]. 石油学报,2011,32(1):101-106. LI Yang, FAN Zhihui. Developmental pattern and distribution rule of the fracture-cavity system of Ordovician carbonate reservoirs in the Tahe Oilfield[J]. Acta Petrolei Sinica, 2011, 32(1):101-106.
[2] 李阳. 塔河油田碳酸盐岩缝洞型油藏开发理论及方法[J]. 石油学报, 2013,34(1):115-121. doi:10.7623/syxb201301013 LI Yang. The theory and method for development of carbonate fractured-cavity reservoirs in Tahe Oilfield[J]. Acta Petrolei Sinica, 2013, 34(1):115-121. doi:10.7623/syxb201301013
[3] LI Yang, KANG Zhijiang, XUE Zhaojie, et al. Theories and practices of carbonate reservoirs development in China[J]. Petroleum Exploration and Development, 2018, 45(4):712-722. doi:10.1016/S1876-3804(18)30074-0
[4] 李小波,彭小龙,史英,等. 井间示踪剂测试在缝洞型油藏的应用[J]. 石油天然气学报,2008,30(6):271-274,393. LI Xiaobo, PENG Xiaolong, SHI Ying, et al. Application of interwell tracer testing in fracture-cavity reservoirs[J]. Journal of Oil and Gas Technology, 2008, 30(6):271-274, 393.
[5] 李凡. 气体示踪剂监测技术的研究与应用[D]. 青岛:中国石油大学(华东), 2013. LI Fan. Research and application of gas tracer monitoring technology[D]. Qingdao:China University of Petroleum, 2013.
[6] AL-QASIM A, KOKAL S, HARTVIG S, et al. Reservoir description insights from inter-well gas tracer test[C]. SPE 197967-MS, 2019. doi:10.2118/197967-MS
[7] BRIGHAM W E, SMITH D H. Prediction of tracer behavior in five-spot flow[C]. SPE 1130-MS, 1965. doi:10.2118/1130-MS
[8] 梅正星. 利用示踪过程曲线计算示踪剂回收率和地下过水管道系统体积[J]. 水文地质工程地质,1988(4):61-43. doi:10.16030/j.cnki.issn.1000-3665.1988.04.022 MEI Zhengxing. Using tracer process curve to calculate tracer recovery rate and underground water pipeline system volume[J]. Hydrogeology and Engineering Geology, 1988(4):61-43. doi:10.16030/j.cnki.issn.1000-3665.1988.04.022
[9] TANG J S. Extended Brigham model fo residual oil saturation measurement by partitioning tracer tests[C]. SPE 84874-PA, 2005. doi:10.2118/84874-PA, 2005, 10(2):175-183.
[10] 周丽梅,郭平,刘洁,等. 利用示踪剂资料讨论塔河缝洞性油藏井间连通方式[J]. 成都理工大学学报(自然科学版), 2015,42(2):212-217. doi:10.3969/j.issn.1671-9727.2015.02.09 ZHOU Limei, GUO Ping, LIU Jie, et al. Study on inter well connectivity of carbonate rock reservoir with fractures and caves by tracer in Tahe Oilfield, Xinjiang, China[J]. Journal of Chengdu University of Technology(Science& Technology Edition), 2015, 42(2):212-217. doi:10.3969/j.issn.1671-9727.2015.02.09
[11] 于金彪,宋道万,秦学杰,等. 井间示踪剂解释模型研究[J]. 油气地质与采收率, 2003,10(6):42-44,8. doi:10.3969/j.issn.1009-9603.2003.06.015 YU Jinbiao, SONG Daowan, QIN Xuejie, et al. Study on interpretation model of interwell tracer[J]. Petroleum Geology and Recovery Efficiency, 2003, 10(6):42-44, 8. doi:10.3969/j.issn.1009-9603.2003.06.015
[12] 孙建华,柳红春,刘鹏程,等. 井间示踪监测技术在高含水油田提高采收率技术中的应用[J]. 新疆石油学院学报,2003,15(2):56-59, 62. doi:10.3969/j.issn.1673-2677.2003.02.014 SUN Jianhua, LIU Hongchun, LIU Pengcheng, et al. The application of the trace supervise technique of between-wells in high water-cut oilfields for enhancing recovery rate technique[J]. Journal of Xinjiang Petroleum Institute, 2003, 15(2):56-59, 62. doi:10.3969/j.issn.1673-2677.2003.02.014
[13] 刘同敬,姜汉桥,黎宁,等. 井间示踪测试在剩余油分布描述中的应用[J]. 大庆石油地质与开发,2008,27(1):74-77. doi:10.3969/j.issn.1000-3754.2008.01.020 LIU Tongjing, JIANG Hanqiao, LI Ning, et al. Application of interwell tracer testing in describing remaining oil distribution[J]. Petroleum Geology& Oilfield Development in Daqing, 2008, 27(1):74-77. doi:10.3969/j.issn.1000-3754.2008.01.020
[14] 崔萍,刘义坤. 利用示踪剂方法确定油藏地层参数和剩余油饱和度[J]. 石油地质与工程,2009,23(6):55-58. doi:10.3969/j.issn.1673-8217.2009.06.017 CUI Ping, LIU Yikun. Determination on formation parameter and remaining oil saturation by using tracer[J]. Petroleum Geology and Engineering, 2009, 23(6):55-58. doi:10.3969/j.issn.1673-8217.2009.06.017
[15] MULKERN M E, ASADI M, MCCALLUN S. Fracture extent and zonal communication evaluation using chemical gas tracers[C]. SPE 138877-MS, 2010. doi:10.2118/138877-MS
[16] HUSEBY O K, SAGEN J, DUGSTAD O. Gas tracer transport-correct formulation and fast post-processing simulation technique[C]. SPE 142991-MS, 2011. doi:10.2118/142991-MS
[17] 李牧. 缝洞型油藏注气示踪剂解释方法研究[D]. 成都:西南石油大学,2017. LI Mu. Research on the interpretation method of gas injection tracer in fracture-cavity reservoirs[D]. Chengdu:Southwest Petroleum University, 2017.
[18] MORAL J D, ABAD B, PANADERO A, et al. Numerical simulation of gas tracers for reservoir characterization, a case study[C]. SPE 196624-MS, 2019. doi:10.2118/196624-MS
[19] 孔祥言. 高等渗流力学[M]. 合肥:中国科学技术大学出版社,2010. KONG Xiangyan. Advanced seepage mechanics[M]. Hefei:University of Science and Technology of China Press, 2010.