Application exploration of wide field electromagnetic method for identification of longitudinal and lateral water intrusion fronts of deep edge-water gas reservoirs

ZHANG LIANJIN; LI TAO; TANG SONG; ZHANG MINZHI; ZHANG CHUN; PANG YU; LI SHUN; LI QIU

doi:10.13809/j.cnki.cn32-1825/te.2025114

Petroleum Reservoir Evaluation and Development >

0 20251112 - 20251113

DOI: https://doi.org/10.13809/j.cnki.cn32-1825/te.2025114

Application exploration of wide field electromagnetic method for identification of longitudinal and lateral water intrusion fronts of deep edge-water gas reservoirs

ZHANG LIANJIN ,
LI TAO ,
TANG SONG ,
ZHANG MINZHI ,
ZHANG CHUN ,
PANG YU ,
LI SHUN ,
LI QIU

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1. PetroChina Research Institute of Exploration and Development, Southwest Oil & Gasfield Company, Chengdu, Sichuan 610041, China;
2. PetroChina Central Sichuan Oil and Gas District, Southwest Oil & Gasfield Company, Suining, Sichuan 629000, China

Received date: 2025-03-10

Online published: 2025-11-12

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Abstract

China is rich in deep and ultra-deep natural gas resources. The cumulative proven geological reserves of natural gas are nearly 5×10¹² m³, and the cumulative natural gas production exceeds 5 000 ×10⁸ m³. It is an important strategic field for ensuring national energy security. However, deep and ultra-deep gas reservoirs are all water-bearing gas reservoirs and are generally developed using sparse well patterns. Under the condition of sparse well pattern development, it is difficult to accurately depict the leading edge of water invasion, which has become a key factor restricting the efficient development of deep/ultra-deep water-bearing gas reservoirs. This study leveraged the advantages of the wide field electromagnetic method that could distinguish gas zones, gas-water transition zones, and water zones through differences in inversion resistivity. Taking well group 1 of the Longwangmiao Formation gas reservoir, Moxi area, Sichuan Basin as the research object, a three-dimensional wide field electromagnetic detection of 2 km² was conducted. The geoelectric characteristics from 5 000 m underground were obtained, a set of fluid identification methods integrating vibration and electricity was formed, and a geoelectric model was constructed. The wide field electromagnetic method was used for the first time to identify the leading edge of water invasion in deep edge-water gas reservoirs. The results showed that: (1) based on the linear regression relationship between well-logging resistivity and the wide field inversion resistivity, it was determined that the wide field electromagnetic inversion resistivity in the water zones of well group 1 was less than 227 Ω·m, the wide field electromagnetic inversion resistivity in the gas-water transition zones ranged from 227 Ω·m to 383 Ω·m, and the wide field electromagnetic inversion resistivity in the pure gas zones was greater than 383 Ω·m. (2) The edge water advanced relatively uniformly from well 1 into the interior of the gas reservoir without obvious water invasion channels. The leading edge of the water invasion showed uneven water invasion characteristics, with an overall water invasion rate of approximately 50 m/a. (3) The well group should adopt a water control strategy combining drainage and control. The daily drainage capacity of well 1 was 300 to 400 m³/d, and the daily gas production capacity of the internal wells should be reduced from the current 200×10⁴ m³/d to below 150×10⁴ m³/d. This achievement has broad application prospects in the description of gas-water distribution in deep/ultra-deep gas reservoirs, the characterization of the leading edge of water invasion, and precise water control.

Key words： wide field electromagnetic method; deep edge-water gas reservoir; resistivity; water invasion front; water control strategy

Cite this article

ZHANG LIANJIN , LI TAO , TANG SONG , ZHANG MINZHI , ZHANG CHUN , PANG YU , LI SHUN , LI QIU . Application exploration of wide field electromagnetic method for identification of longitudinal and lateral water intrusion fronts of deep edge-water gas reservoirs[J]. Petroleum Reservoir Evaluation and Development, 0 : 20251112 -20251113 . DOI: 10.13809/j.cnki.cn32-1825/te.2025114

References

[1] 何继善. 广域电磁法和伪随机信号电法[M]. 北京: 高等教育出版社, 2010.
HE Jishan.Wide-area electromagnetic method and pseudo-random signal electrical method[M]. Beijing: Higher Education Press, 2010.
[2] 何继善. 频率域电法的新进展[J]. 地球物理学进展, 2007, 22(4): 1250-1254.
HE Jishan.The new development of frequency domain electro-prospecting[J]. Progress in Geophysics, 2007, 22(4): 1250-1254.
[3] 何继善. 广域电磁测深法研究[J]. 中南大学学报(自然科学版), 2010, 41(3): 1065-1072.
HE Jishan.Wide field electromagnetic sounding methods[J]. Journal of Central South University (Science and Technology), 2010, 41(3): 1065-1072.
[4] 何继善, 李帝铨, 戴世坤. 广域电磁法在湘西北页岩气探测中的应用[J]. 石油地球物理勘探, 2014, 49(5): 1006-1012.
HE Jishan, LI Diquan, DAI Shikun.Shale gas detection with wide field electromagnetic method in North-western Hunan[J]. Oil Geophysical Prospecting, 2014, 49(5): 1006-1012.
[5] 徐锦通, 汤井田. 基于谱元法的广域电磁法三维正演模拟[J]. 地球物理学报, 2022, 65(4): 1461-1471.
XU Jintong, TANG Jingtian.Spectral element method for 3D wide field electromagnetic method forward modeling[J]. Chinese Journal of Geophysics, 2022, 65(4): 1461-1471.
[6] 何继善, 李帝铨, 戴世坤. 广域电磁法在湘西北页岩气探测中的应用[J]. 石油地球物理勘探, 2014, 49(05): 1006-1012
HE Jishan, LI Diquan, DAI Shikun.Shale gas detection with wide field electromagnetic method in North-western Hunan[J]. Oil Geophysical Prospecting, 2014, 49(5): 1006-1012.
[7] 王宏宇. 广域电磁法探测含油富集区试验研究[D]. 长沙: 中南大学, 2013.
WANG Hongyu.A research of wide field electromagnetic method applied in screening oil enrichment area[D]. Changsha: Central South University, 2013.
[8] 王若, 王妙月. 可控源音频大地电磁数据的反演方法[J]. 地球物理学进展, 2003, 18(2): 197-202.
WANG Ruo, WANG Miaoyue.Inversion method of controlled source audio-frequency magnetotelluric data[J]. Progress in Geophysics, 2003, 18(2): 197-202.
[9] 何继善, 佟铁钢, 柳建新. aⁿ序列伪随机多频信号数学分析及实现[J]. 中南大学学报自然科学版, 2009, 40(6): 1666-1671.
HE Jishan, TONG Tiegang, LIU Jianxin.Mathematical analysis and realization of aⁿ sequence pseudo-random multi-frequencies signal[J]. Journal of Central South University(Science and Technology), 2009, 40(6): 1666-1671.
[10] 王家映. 我国大地电磁探测研究新进展[J]. 地球物理学报, 1997, 40, 206-217.
WANG Jiaying.NEW DEVELOPMENT OF MAGNETOTELLURIC SOUNDING IN CHINA[J]. Chinese Journal of Geophysics, 1997, 40, 206-217.
[11] 何继善, 李帝铨, 戴世坤. 广域电磁法在湘西北页岩气探测中的应用[J]. 石油地球物理勘探, 2014, 49(5): 1006-1012.
HE Jishan, LI Diquan, DAI Shikun.Shale gas wide area electromagnetic method in shale gas exploration in northwestern Hunan[J]. Oil Geophysical Prospecting, 2014, 49(5): 1006-1012.
[12] 凌帆, 朱裕振, 周明磊. 广域电磁法在南华北盆地长山隆起页岩气资源潜力评价中的应用[J]. 物探与化探, 2017, 41(2): 369-376.
LING Fan, ZHU Yuzheng, ZHOU Minglei.Application of wide area electromagnetic method to shale gas resource potential assessment in the Long Hills Uplift, South China Basin[J]. Geophysical and Geochemical Exploration, 2017, 41(2): 369-376.
[13] 童明慧. 广域电磁法在青海省都兰县八宝山地区的应用效果[D]. 吉林大学, 2018.
TONG Minghui.Application of the Wide Field Electromagnetic Method to Babaoshan Area in Dulan Connty, Qinghai Province[D]. Jilin University·China, 2018.
[14] 王宏宇, 李帝铨, 柳建新, 等. 广域电磁法在鄂尔多斯盆地西南缘含油富集区探测中的应用[J]. 地球物理学进展, 2020, 35(3): 1038-1047.
WANG Hongyu, LI Diquan, LIU Jianxing, et al.Application of wide-area electromagnetic method in exploration of oil-rich areas in the southwest margin of Ordos Basin[J]. Progress in Geophysics, 2020, 35(3) : 1038-1047.
[15] 颜晓华, 黄佳, 李芳书. 广域电磁法压裂监测技术在致密砂岩气藏中的应用-以川中金秋气田为例[J]. 非常规油气, 2024, 11(4): 121-134.
YAN Xiao hua, Huang Jia, LI Fangshu. Application of wide field electromagnetic method fracturing monitoring technology in tight sandstone gas reservoir: A case study of Jinqiu Gas Field in central Sichuan[J]. Unconventional Oil & Gas, 2024, 11(4): 121-13.
[16] 李明强, 马梓珂, 唐松, 等. 四川盆地磨溪地区龙王庙组碳酸盐岩气藏水侵规律[J]. 天然气地球科学, 2024, 35(2): 366-378.
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.
[17] 冯曦, 钟兵, 杨学锋, 等. 有效治理气藏开发过程中水侵影响的问题及认识[J]. 天然气工业, 2015, 35(2): 35-40.
FENG Xi, ZHONG Bing, YANG Xuefeng, et al.Effective water influx control in gas reservoir development: Problems and countermeasures[J]. Natural Gas Industry, 2015, 35(2): 35-40.
[18] 谢武仁, 杨威, 李熙喆, 等. 四川盆地川中地区寒武系龙王庙组颗粒滩储层成因及其影响[J]. 天然气地球科学, 2018, 29(12): 1715-1726.
XIE Wuren, YANG Wei, LI Xiezhe, et al.The origin and influence of the grain beach reservoirs of Cambrian Longwangmiao Formation in Central Sichuan area, Sichuan[J]. Natural Gas Geoscience, 2018, 29(12): 1715-1726.
[19] 冯曦, 杨学锋, 邓惠, 等. 根据水区压力变化特征辨识高含硫边水气藏水侵规律[J]. 天然气工业, 2013, 33(1): 75-78.
FENG Xi, YANG Xuefeng, DENG Hui, et al.Identification of the water invasion law in high-sulfur and edge-water gas reservoirs based on the characteristics of pressure variation in the water zone[J]. Natural Gas Industry, 2013, 33(1): 75-78.
[20] 李滔, 李闽, 荆雪琪, 等. 孔隙尺度各向异性与孔隙分布非均质性对多孔介质渗透率的影响机理[J]. 石油勘探与开发, 2019, 46(3): 569-579.
LI Tao, LI Min, JING Xueqi, et al.Influence mechanism of pore-scale anisotropy and pore distribution heterogeneity on permeability of porous media[J]. Petroleum Exploration and Development, 2019, 46(3): 569-579.
[21] 胡勇, 陈颖莉, 李滔. 气田开发中"气藏整体治水"技术理念的形成、发展及理论内涵[J]. 天然气工业, 2022, 42(09): 10-20.
HU Yong, CHENG Yingli, LI Tao.The formation development and theoretical connotations of "overall water control of gas reservoir" technology in gas field development[J]. Natural Gas Industry, 2022, 42(9): 10-20.
[22] 郑冰. 过渡区条件下广域电磁法探测深度问题的理论研究[J]. 物探与化探, 2016, 40(1): 78-82.
ZHENG Bin.A theoretical study of the detection depth of WFEM under the condition of transition zone[J]. Geophysical and Geochemical Exploration, 2016, 40(1): 78-82.
[23] 周印明, 王金海, 胡晓颖, 等. 基于矢量位和标量位的广域电磁法三维有限元数值模拟[J]. 石油地球物理勘探, 2021, 56(1): 181-189.
ZHOU Yingming, WANG Jinhai, HU Xiaoying, et al.WFEM 3D finite element numerical simulation based on the vector potential and scalar potential[J]. Oil Geophysical Prospecting, 2021, 56(1): 181-189.
[24] 李帝铨, 王中乐, 刘子杰, 等. 新元煤矿富水区广域电磁法精细探测[J]. 地球物理学进展, 39(1): 0174-0182.
LI Diquan, WANG Zhongle, LIU Zijie, et al.Fine detection of wide field electromagnetic method in water-rich area of Xinyuan Coal mine[J]. Progress in Geophysics, 39(1): 0174-0182.
[25] 谭章坤, 古志文, 尹雪波, 等. 广域电磁法地热勘探应用效果[J]. 四川地质学报, 2021, 41(1).
TANG Zhangkun, GU Zhiwen, YING Xuebo, et al.Effect of the Application of Wide-Field Electromagnetic Method in geothermal exploration[J]. Acta Geologica Sichuan, 2021, 41(1).

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