Journal of Jilin University(Earth Science Edition) ›› 2018, Vol. 48 ›› Issue (6): 1854-1864.doi: 10.13278/j.cnki.jjuese.20170292

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Numerical Evaluation of Electrical Resistance Tomography Monitoring of Sea Bed Basement Effect on Methane Leaks During Hydrate Production

Wu Jingxin1, Guo Xiujun1,2,3, Jia Yonggang1,2,3, Sun Xiang1, Li Ning1   

  1. 1. College of Environmental Science and Engineering, Ocean University of China, Qingdao 266100, Shandong, China;
    2. Shandong Provincial Key Laboratory of Marine Environment and Geological Engineering(Ocean University of China), Qingdao 266100, Shandong, China;
    3. Key Laboratory of Marine Environment and Ecology, Ministry of Education, Qingdao 266100, Shandong, China
  • Received:2018-09-07 Published:2018-11-26
  • Supported by:
    Supported by National Key Research and Development Program of China (2017YFC0307701) and National Natural Science Foundation of China (41772307, 41427803)

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Abstract: In order to effectively detect methane leakage of a sedimentary layer, we designed an in situ electricity monitoring system used in sea floor. The Shenhu gas hydrate production area in South China Sea was selected as the target area, and the corresponding geological models and resistivity models were established to evaluate the detection the capability of the system for methane leakage. The resistivity profiles with different acquisition parameters were calculated and analyzed by simulating and monitoring them with the designed electrical system. The simulation results indicate that the seawater forms a low-resistance stripe concomitant anomaly in a depth range of the detection profile, which suppress electrical signals in corresponding to its position. The top position of the concomitant anomaly can be defined as the effective monitoring depth. The effective monitoring depth is directly affected by the electrode distance, and the effective monitoring depth of the 10 m dipole-dipole array is about 50 m. Within the effective monitoring depth, the detection profile has a good reflection in a layered, agglomerate methane gathering area and a slow methane leaking area. The relative resistivity profiles obtained from the data processing can better reflect the boundaries of methane accumulation zones than electrical profiles. This in situ electricity monitoring system can effectively monitor the spatial variation of a methane leakage area in real time.

Key words: gas hydrate, methane leakage, electrical resistivity tomography, abnormal characteristics of detection profile

CLC Number: 

  • P738
[1] Li X S, Xu C G, Zhang Y, et al. Investigation into Gas Production from Natural Gas Hydrate:A Review[J]. Applied Energy, 2016, 172:286-322.
[2] Nagakubo S, Arata N, Yabe I, et al. Environmental Impact Assessment Study on Japan's Methane Hydrate R&D Program[J]. Fire Ice, 2011, 11:4-11.
[3] Waarum I K, Sparrevik P, Kvistedal Y, et al. Innovative Methods for Methane Leakage Monitoring near Oil and Gas Installations[C]//Offshore Technology Conference. Houston:Offshore Technology Conference, 2016:OTC-27036-MS.
[4] Takahashi H, Asakawa E, Hayashi T, et al.Development of Ocean Bottom Multi-Component Seismic System for Methane Hydrate Dissociation Monitoring[C]//Offshore Technology Conference. Houston:Offshore Technology Conference, 2013:OTC-24115-MS.
[5] Schütze C, Sauer U, Beyer K, et al. Natural Analogues:A Potential Approach for Developing Reliable Monitoring Methods to Understand Subsurface CO2 Migration Processes[J]. Environmental Earth Sciences, 2012, 67(2):411-423.
[6] Mendonça C A, Doherty R, Amaral N D, et al. Resistivity and Induced Polarization Monitoring of Biogas Combined with Microbial Ecology at a Brownfield Site[J]. Interpretation, 2015, 3(4):SAB43-SAB56.
[7] Terry N, Slater L, Comas X, et al. Free Phase Gas Processes in a Northern Peatland Inferred from Autonomous Field-Scale Resistivity Imaging[J]. Water Resources Research, 2016, 52(4):2996-3018.
[8] Breen S J, Carrigan C R,LaBrecque D J, et al. Bench-Scale Experiments to Evaluate Electrical Resistivity Tomography as a Monitoring Tool for Geologic CO2 Sequestration[J]. International Journal of Greenhouse Gas Control, 2012, 9:484-494.
[9] 尚可旭, 郭秀军, 吴景鑫,等. 冷泉气体渗漏过程海洋多电极电阻率法探测效果模拟分析[J]. 海洋学报, 2017, 39(11):85-96. Shang Kexu, Guo Xiujun, Wu Jingxin, et al. Detecting Cold Spring Gas Leakage in Seabed Sediment with Marine Multi-Eletrode Resistivity Method:Numerical Simulation and Experiment[J]. Haiyang Xuebao, 2017, 39(11):85-96.
[10] Zhang H Q, Yang S X, Wu N Y, et al. Successful and Surprising Results for China's First Gas Hydrate Drilling Expedition[J]. Fire in the Ice:Methane Hydrate Newsletter, 2007, 7(3):6-9.
[11] 吴时国, 董冬冬, 杨胜雄,等. 南海北部陆坡细粒沉积物天然气水合物系统的形成模式初探[J]. 地球物理学报, 2009,52(7):1849-1857. Wu Shiguo, Dong Dongdong, Yang Shengxiong, et al. Genetic Model of the Hydrate System in the Fine Grain Sediments in the Northern Continental Slope of South China Sea[J]. Chinese Journal of Geophysics, 2009, 52(7):1849-1857.
[12] 杨胜雄, 张明, 梁金强,等. 神狐海域钻探发现大型天然气水合物矿体[J]. 中国地质调查成果快讯, 2016, 3(21):6-8. Yang Shengxiong, Zhang Ming, Liang Jinqiang, et al. Discovery of Large Natural Gas Hydrate Orebody in Drilling of the Shenhu Area[J]. News of the Achievements of China's Geological Survey, 2016, 3(21):6-8.
[13] 苏丕波, 尉建功. 神狐海域首次发现Ⅱ型天然气水合物[J]. 中国地质调查成果快讯, 2016,3(21):23-26. Su Pibo, Wei Jiangong. First Discovery of Type Ⅱ Gas Hydrates of the Shenhu Area[J]. News of the Achievements of China's Geological Survey, 2016, 3(21):23-26.
[14] 胡高伟, 李彦龙, 吴能友, 等. 神狐海域W18/19站位天然气水合物上覆层不排水抗剪强度预测[J]. 海洋地质与第四纪地质, 2017, 37(5):151-158. Hu Gaowei, Li Yanlong, Wu Nengyou, et al. Undrained Shear Strength Estimation of the Cover Layer of Hydrate at Site W18/19 of Shenhu Area[J]. Marine Geology & Quaternary Geology, 2017, 37(5):151-158.
[15] Sun J, Ning F, Li S, et al. Numerical Simulation of Gas Production from Hydrate-Bearing Sediments in the Shenhu Area by Depressurising:The Effect of Burden Permeability[J]. Journal of Unconventional Oil & Gas Resources, 2015, 12:23-33.
[16] 尚久靖, 郭依群, 龚跃华,等. 神狐海域天然气水合物钻探区沉积体系研究[J]. 中国地质调查成果快讯, 2016, 3(21):19-22. Shang Jiujing, Guo Yiqun, Gong Yuehua, et al. Study on Sedimentary System of Gas Hydrate Drilling Area of the Shenhu Area[J]. News of the Achievements of China's Geological Survey, 2016, 3(21):19-22.
[17] 陈忠, 颜文, 陈木宏,等. 海底天然气水合物分解与甲烷归宿研究进展[J]. 地球科学进展, 2006, 21(4):394-400. Chen Zhong, Yan Wen, Chen Muhong, et al. Advances in Gas Hydrate Dissociation and Fate of Methane in Marine Sediment[J]. Advances in Earth Science, 2006, 21(4):394-400.
[18] 乔少华, 苏明, 杨睿,等. 运聚体系:天然气水合物不均匀性分布的关键控制因素初探[J]. 新能源进展, 2013(3):245-256. Qiao Shaohua, Su Ming, Yang Rui, et al. Migration and Accumulation System:The Key Control Factors of Heterogeneous Distribution of Gas Hydrate[J]. Advances in New and Renewable Energy, 2013(3):245-256.
[19] Naudts L, Greinert J, Poort J, et al. Active Venting Sites on the Gas-Hydrate-Bearing Hikurangi Margin, off New Zealand:Diffusive-Versus Bubble-Released Methane[J]. Marine Geology, 2010, 272(1/2/3/4):233-250.
[20] 王秀娟, 吴时国, 王吉亮,等. 南海北部神狐海域天然气水合物分解的测井异常[J]. 地球物理学报, 2013, 56(8):2799-2807. Wang Xiujuan, Wu Shiguo, Wang Jiliang, et al. Anomalous Wireline Logging Data Caused by Gas Hydrate Dissociation in the Shenhu Area, Northern Slope of South China Sea[J]. Chinese Journal of Geophysics, 2013, 56(8):2799-2807.
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