Abstract：Underground gas storage(UGS) in oil-gas fields is an underground gas storage space reconstructed from depleted oil and gas reservoirs, and it is the most important type of gas storage. Compared with foreign UGS in oilgas fields, domestic UGS geological bodies are mostly complex fault blocks with deep burial, poor reservoir permeability, and strong heterogeneity. The unique and complicated geological conditions in China pose great challenges to the safe operation of UGS geological bodies. Microseismic monitoring technology can monitor the rock fracture in real time and is the most direct monitoring approach for the geological body activities of UGS. Therefore, based on the principle of microseismic monitoring and the definition of geological body integrity of UGS, this paper studies the data processing method according to the characteristics of microseismic monitoring data of UGS. Taking Hutubi UGS in Xinjiang as an example, this paper carries out microseismic monitoring data processing and interpretation and evaluates its UGS geological body integrity. The results are as follows:① Microseismic monitoring technology plays an important role in ensuring the geological body safety of UGS and can monitor rock fracture activities of faults, cap rocks, and bottom rock in real time. ② During the study period, the UGS geological body of Hutubi is relatively stable, and there is no obvious aggregation of microseismic events and the occurrence of large magnitude microseismic events near the reservoir depth, but it still needs long-term monitoring. ③Microseismic monitoring can realize three-dimensional monitoring and has a wider monitoring range and richer monitoring information than conventional monitoring methods.
江同文, 王锦芳, 王正茂, 等. 地下储气库与天然气驱油协同建设实践与认识[J]. 天然气工业, 2021, 41(9):66-74.JIANG Tongwen, WANG Jinfang, WANG Zhengmao, et al. Practice and understanding of collaborative construction of underground gas storage and natural gas flooding[J]. Natural Gas Industry, 2021, 41(9):66-74.
[2]
李建中, 徐定宇, 李春. 利用枯竭油气藏建设地下储气库工程的配套技术[J]. 天然气工业, 2009, 29(9):97-99.LI Jianzhong, XU Dingyu, LI Chun. The matching technologies of rebuilding underground gas storages on the depleted oil and gas reservoirs[J]. Natural Gas Industry, 2009, 29(9):97-99.
[3]
谢丽华, 张宏, 李鹤林. 枯竭油气藏型地下储气库事故分析及风险识别[J]. 天然气工业, 2009, 29(11):116-119.XIE Lihua, ZHANG Hong, LI Helin. Accident analysis and risk identification of underground gas storage rebuilt upon the depleted oil and gas reservoirs[J]. Natural Gas Industry, 2009, 29(11):116-119.
[4]
曾大乾, 张广权, 张俊法, 等. 中石化地下储气库建设成就与发展展望[J]. 天然气工业, 2021, 41(9):125-134.ZENG Daqian, ZHANG Guangquan, ZHANG Junfa, et al. Sinopec's UGS construction achievement and development prospect[J]. Natural Gas Industry, 2021, 41(9):125-134.
[5]
阳小平, 程林松, 何学良, 等. 地下储气库断层的完整性评价[J]. 油气储运, 2013, 32(6):578-582.YANG Xiaoping, CHENG Linsong, HE Xueliang, et al. Fault's integrity assessment of underground gas storage[J]. Oil & Gas Storage and Transportation, 2013, 32(6):578-582.
朱礼萍. 国内外地下储气库监测技术概述[J]. 石油管材与仪器, 2022, 8(4):1-7.ZHU Liping. An overview of monitoring technology for underground natural gas storage[J]. Petroleum Tubular Goods & Instruments, 2022, 8(4):1-7.
[9]
王建夫, 张志胜, 安国印, 等. 气体示踪技术在盐穴地下储气库微泄漏监测中的应用[J]. 天然气工业, 2021, 41(12):156-164.WANG Jianfu, ZHANG Zhisheng, AN Guoyin, et al. Application of gas tracer technology to micro-leakage monitoring of salt-cavern underground gas storage[J]. Natural Gas Industry, 2021, 41(12):156-164.
[10]
陈晓源, 谭羽非. 地下储气库天然气泄漏损耗与动态监测判定[J]. 油气储运, 2011, 30(7):513-516.CHEN Xiaoyuan, TAN Yufei. Gas leak loss and dynamic monitoring determination of underground gas storage[J]. Oil & Gas Storage and Transportation, 2011, 30(7):513-516.
[11]
魏路路, 井岗, 徐刚, 等. 微地震监测技术在地下储气库中的应用[J]. 天然气工业, 2018, 38(8):41-46.WEI Lulu, JING Gang, XU Gang, et al. Application of microseismic monitoring technology in underground gas storage[J]. Natural Gas Industry, 2018, 38(8):41-46.
[12]
KRAAIJPOEL D A, NIEUWLAND D A, DOST B. Microseismic monitoring and sub seismic fault detection in an underground gas storage[C]. 4th EAGE Passive Seismic Workshop, 2013, cp-337-00017.
[13]
CESCA S, GRIGOLI F, HEIMANN S, et al. The 2013 September-October seismic sequence offshore Spain:A case of seismicity triggered by gas injection[J]. Geophysical Journal International, 2014, 198(2):941-953.
[14]
廖伟, 刘国良, 戴勇, 等. 气藏型储气库微地震监测系统设计及应用——以新疆H储气库为例[J]. 天然气地球科学, 2020, 31(11):1654-1662.LIAO Wei, LIU Guoliang, DAI Yong, et al. Design and application of micro-seismic monitoring system for gas reservoir-type gas storage:Case study of Xinjiang H gas storage[J]. Natural Gas Geoscience, 2020, 31(11):1654-1662.
[15]
宋鸿林, 张长厚, 王根厚. 构造地质学[M]. 北京:地质出版社, 2013.
[16]
郑雅丽, 孙军昌, 邱小松, 等. 油气藏型储气库地质体完整性内涵与评价技术[J]. 天然气工业, 2020, 40(5):94-103.ZHENG Yali, SUN Junchang, QIU Xiaosong, et al. Connotation and evaluation technique of geological integrity of UGSs in oil-gas fields[J]. Natural Gas Industry, 2020, 40(5):94-103.
[17]
魏国齐, 郑雅丽, 邱小松, 等. 中国地下储气库地质理论与应用[J]. 石油学报, 2019, 40(12):1519-1530.WEI Guoqi, ZHENG Yali, QIU Xiaosong, et al. Geological theory and application of underground gas storage in China[J]. Acta Petrolei Sinica, 2019, 40(12):1519-1530.
[18]
陈勉, 金衍, 张广清. 石油工程岩石力学[M]. 北京:科学出版社, 2008.
[19]
魏路路, 姚宴波, 韦正达, 等. 微地震监测技术在气田水回注中的应用[J]. 石油地球物理勘探, 2018, 53(增刊2):168-173.WEI Lulu, YAO Yanbo, WEI Zhengda, et al. Microseismic monitoring for water reinjection in a gas field[J]. Oil Geophysical Prospecting, 2018, 53(S2):168-173.
[20]
王维波, 官强, 高明, 等. 利用残差网络和地震发射层析成像的微地震事件检测[J]. 石油地球物理勘探, 2022, 57(2):251-260.WANG Weibo, GUAN Qiang, GAO Ming, et al. Detection of microseismic events based on residual network and seismic emission tomography[J]. Oil Geophysical Prospecting, 2022, 57(2):251-260.
[21]
ZHOU W, WANG L, GUAN L, et al. Microseismic event location using an inverse method of joint P-S phase arrival difference and P-wave arrival difference in a borehole system[J]. Journal of Geophysics and Engineering, 2015, 12(2):220-226.
[22]
CASTELLANOS F, VAN DER BAAN M. Microseismic event locations using the double-difference algorithm[J]. CSEG Recorder, 2013, 38(3):26-37.
[23]
BANCROFT J C, WONG J, Han L. Sensitivity of locating a microseismic event when using analytic solutions and the first arrival times[C]. SEG Technical Program Expanded Abstracts, 2010, 29:2191-2195.
ZHEBEL O, EISNER L. Simultaneous microseismic event localization and source mechanism determination[J]. Geophysics, 2015, 80(1):KS1-KS9.
[30]
LIANG C, YU Y, YANG Y, et al. Joint inversion of source location and focal mechanism of microseismicity[J]. Geophysics, 2016, 81(2):KS41-KS49.
[31]
刘福田. 震源位置和速度结构的联合反演(Ⅰ)——理论和方法[J]. 地球物理学报, 1984, 27(2):167-175.LIU Futian. Simultaneous inversion of earthquake hypocenters and velocity structure(Ⅰ):Theory and method[J]. Chinese Journal of Geophysics, 1984, 27(2):167-175.
