Simulation of hydrate and free gas reservoirs based on random medium theory

LI Canping; BAO Binghuang; CHANG Liang; ZHANG Hairong; CHEN Fengying; WANG Rui; HUANG Yuhui

doi:10.16562/j.cnki.0256-1492.2023112701

Marine Geology & Quaternary Geology > 2025 > 45(1): 199-209. > DOI: 10.16562/j.cnki.0256-1492.2023112701

LI Canping，BAO Binghuang，CHANG Liang，et al. Simulation of hydrate and free gas reservoirs based on random medium theory[J]. Marine Geology & Quaternary Geology，2025，45(1)：199-209. DOI: 10.16562/j.cnki.0256-1492.2023112701

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Simulation of hydrate and free gas reservoirs based on random medium theory

LI Canping^{1, 2,},
BAO Binghuang¹,
CHANG Liang³,
ZHANG Hairong^{1, 2},
CHEN Fengying^{1, 2},
WANG Rui^{1, 2, ,},
HUANG Yuhui¹

1.
School of Electronics and Information Engineering, Guangdong Ocean University, Zhanjiang 524088, China
2.
Guangdong Provincial Engineering and Technology Research Center of Marine Remote Sensing and Information Technology, Zhanjiang 524088, China
3.
Research Institute of Geophysical Exploration, Jilin Oilfield Company, PetroChina, Songyuan 138000, China

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Received Date: November 26, 2023
Revised Date: June 19, 2024

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Abstract

Abstract

To deeply study the reservoir formation and occurrence characteristics of hydrates, establish geological models for studying the seismic response characteristics of hydrates and free gas reservoirs, and further provide a theoretical guidance for hydrate exploration and identification, hydrates and free gas reservoirs were simulated based on random medium theory. First, according to the actual occurrence status and characteristics of hydrates and free gas in the formation, the contour templates of the occurrence area for hydrate and free gas were established. Secondly, two types of reservoir random medium models were established based on the random medium theory. Finally, based on the contour templates of the occurrence area, the established random medium model was used to achieve numerical simulation of velocity of hydrate areas and free gas areas in the reservoir, and the velocity models for hydrate reservoir and free gas reservoir were established. To approach more closely to the actual geological environment where hydrates are located, uniform velocity formations were individually set up above the hydrate reservoir and below the free gas reservoir, and undulating stratigraphic interfaces were constructed, thus establishing a velocity model for four layer medium undulating interfaces. Compared with actual formations rich in hydrate, the model reflected the complex non-uniformity of hydrate and free gas distribution in hydrate reservoirs, and better simulated the large-scale hydrate and free gas storage areas in formations rich in hydrate.
- gas hydrate,
- free gas,
- reservoir,
- random medium,
- numerical simulation

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References (34)

References

[1]	张金华, 魏伟, 魏兴华, 等. 我国主要冻土区天然气水合物形成条件及成藏模式探讨[J]. 中国石油勘探, 2013, 18(5):74-78 doi: 10.3969/j.issn.1672-7703.2013.05.009 ZHANG Jinhua, WEI Wei, WEI Xinghua, et al. Discussion about natural gas hydrate formation conditions and accumulation pattern in China’s major permafrost regions[J]. China Petroleum Exploration, 2013, 18(5):74-78.] doi: 10.3969/j.issn.1672-7703.2013.05.009
[2]	Guerin G, Goldberg D, Meltser A. Characterization of in situ elastic properties of gas hydrate-bearing sediments on the Blake Ridge[J]. Journal of Geophysical Research: Solid Earth, 1999, 104(B8):17781-17795. doi: 10.1029/1999JB900127
[3]	Holbrook W S, Hoskins H, Wood W T, et al. Methane hydrate and free gas on the Blake Ridge from vertical seismic profiling[J]. Science, 1996, 273(5283):1840-1843. doi: 10.1126/science.273.5283.1840
[4]	马在田, 宋海斌, 孙建国. 海洋天然气水合物的地球物理探测高新技术[J]. 地球物理学进展, 2000, 15(3):1-6 doi: 10.3969/j.issn.1004-2903.2000.03.001 MA Zaitian, SONG Haibin, SUN Jianguo. Geophysical prospecting high technologies of marine gas hydrates[J]. Progress in Geophysics, 2000, 15(3):1-6.] doi: 10.3969/j.issn.1004-2903.2000.03.001
[5]	潘冬阳, 陈晨, 谢雪恋. 南海天然气水合物储层的叠后地震属性分析[J]. 西部探矿工程, 2020, 32(11):46-49 doi: 10.3969/j.issn.1004-5716.2020.11.014 PAN Dongyang, CHEN Chen, XIE Xuelian. Post-stack seismic attribute analysis of gas hydrate reservoirs in the South China Sea[J]. West-China Exploration Engineering, 2020, 32(11):46-49.] doi: 10.3969/j.issn.1004-5716.2020.11.014
[6]	胡中平, 孙建国, 赵群. 利用地震方法识别天然气水合物[J]. 勘探地球物理进展, 2002, 25(6):23-27 HU Zhongping, SUN Jianguo, ZHAO Qun. Identification of gas hydrate with seismic method[J]. Progress in Exploration Geophysics, 2002, 25(6):23-27.]
[7]	宋海斌. 天然气水合物体系动态演化研究(Ⅰ): 地质历史演变[J]. 地球物理学进展, 2003, 18(2):188-196 doi: 10.3969/j.issn.1004-2903.2003.02.003 SONG Haibin. Researches on dynamic evolution of gas hydrate system (Ⅰ): its development in geological history[J]. Progress in Geophysics, 2003, 18(2):188-196.] doi: 10.3969/j.issn.1004-2903.2003.02.003
[8]	李文, 于兴河, 曾小明, 等. 南海北部陆坡神狐海域水合物调查区新近系地震相与沉积相[J]. 海洋地质前沿, 2013, 29(1):17-26 LI Wen, YU Xinghe, ZENG Xiaoming, et al. Study of Neogene sesimic and sedimentary facies in the hydrate survey area of Shenhu region on the north margin of South China Sea[J]. Marine Geology Frontiers, 2013, 29(1):17-26.]
[9]	杨胜雄, 梁金强, 陆敬安, 等. 南海北部神狐海域天然气水合物成藏特征及主控因素新认识[J]. 地学前缘, 2017, 24(4):1-14 YANG Shengxiong, LIANG Jinqiang, LU Jing'an, et al. New understandings on the characteristics and controlling factors of gas hydrate reservoirs in the Shenhu area on the northern slope of the South China Sea[J]. Earth Science Frontiers, 2017, 24(4):1-14.]
[10]	宁伏龙, 梁金强, 吴能友, 等. 中国天然气水合物赋存特征[J]. 天然气工业, 2020, 40(8):1-24 doi: 10.3787/j.issn.1000-0976.2020.08.001 NING Fulong, LIANG Jinqiang, WU Nengyou, et al. Reservoir characteristics of natural gas hydrates in China[J]. Natural Gas Industry, 2020, 40(8):1-24.] doi: 10.3787/j.issn.1000-0976.2020.08.001
[11]	Dai J C, Xu H B, Snyder F, et al. 2004. Detection and estimation of gas hydrates using rock physics and seismic inversion: examples fromthe northern deepwater Gulf of Mexico[J]. The Leading Edge, 2004, 23(1):60-66. doi: 10.1190/1.1645456
[12]	范金, 刘洋廷, 张晓波, 等. 天然气水合物赋存地层的地震波场模拟及对比[J]. 海洋科学进展, 2021, 39(2):290-303 doi: 10.3969/j.issn.1671-6647.2021.02.012 FAN Jin, LIU Yangting, ZHANG Xiaobo, et al. Simulation and comparison of seismic wave fields in natural gas hydrate formations[J]. Advances in Marine Science, 2021, 39(2):290-303.] doi: 10.3969/j.issn.1671-6647.2021.02.012
[13]	陈鸣, 孙殿强, 吴进波, 等. 琼东南盆地松南低凸起天然气水合物储层精细表征及勘探方向预测[J]. 成都理工大学学报:自然科学版, 2022, 49(1):24-35 CHEN Ming, SUN Dianqiang, WU Jinbo, et al. Fine characterization and exploration direction prediction of gas hydrate reservoirs in Songnan Low Uplift, Qiongdongnan Basin, South China Sea[J]. Journal of Chengdu University of Technology (Science & Technology Edition), 2022, 49(1):24-35.]
[14]	樊奇, 朱振宇, 庞维新, 等. 琼东南盆地水合物富集区储层特征及勘探启示[J]. 地球科学, 2024, 49(4):1421-1430 FAN Qi, ZHU Zhenyu, PANG Weixin, et al. Reservoir characteristics and exploration implications of gas hydrate enrichment area, Qiongdongnan Basin[J]. Earth Science, 2024, 49(4):1421-1430.]
[15]	孟大江, 路允乾, 张宝金, 等. 叠前反演技术在天然气水合物储层预测中的应用[J]. 特种油气藏, 2023, 30(2):51-57 doi: 10.3969/j.issn.1006-6535.2023.02.007 MENG Dajiang, LU Yunqian, ZHANG Baojin, et al. Application of Pre-stack inversion technology in gas hydrate reservoir prediction[J]. Special Oil & Gas Reservoirs, 2023, 30(2):51-57.] doi: 10.3969/j.issn.1006-6535.2023.02.007
[16]	吴能友, 黄丽, 胡高伟, 等. 海域天然气水合物开采的地质控制因素和科学挑战[J]. 海洋地质与第四纪地质, 2017, 37(5):1-11 WU Nengyou, HUANG Li, HU Gaowei, et al. Geological controlling factors and scientific challenges for offshore gas hydrate exploitation[J]. Marine Geology & Quaternary Geology, 2017, 37(5):1-11.]
[17]	何家雄, 钟灿鸣, 姚永坚, 等. 南海北部天然气水合物勘查试采及研究进展与勘探前景[J]. 海洋地质前沿, 2020, 36(12):1-14 HE Jiaxiong, ZHONG Canming, YAO Yongjian, et al. The exploration and production test of gas hydrate and its research progress and exploration prospect in the northern South China Sea[J]. Marine Geology Frontiers, 2020, 36(12):1-14.]
[18]	Ikelle L T, Yung S K, Daube F. 2-D random media with ellipsoidal autocorrelation functions[J]. Geophysics, 1993, 58(9):1359-1372. doi: 10.1190/1.1443518
[19]	Ergintav S, Canitez N. Modeling of multi-scale media in discrete form[J]. Journal of Seismic Exploration, 1997, 6(1):77-96.
[20]	Müller T M, Shapiro S A. Green's function construction for 2D and 3D elastic random media[C]//SEG Technical Program Expanded Abstracts 1999. SEG, 1999:1797.
[21]	奚先, 姚姚. 二维随机介质及波动方程正演模拟[J]. 石油地球物理勘探, 2001, 36(5):546-552 doi: 10.3321/j.issn:1000-7210.2001.05.005 XI Xian, YAO Yao. 2-D random media and wave equation forward modeling[J]. Oil Geophysical Prospecting, 2001, 36(5):546-552.] doi: 10.3321/j.issn:1000-7210.2001.05.005
[22]	奚先, 姚姚. 二维横各向同性弹性随机介质中的波场特征[J]. 地球物理学进展, 2004, 19(4):924-932 doi: 10.3969/j.issn.1004-2903.2004.04.037 XI Xian, YAO Yao. The wave field characteristics of 2-D transversely isotropic elastic random medium[J]. Progress in Geophysics, 2004, 19(4):924-932.] doi: 10.3969/j.issn.1004-2903.2004.04.037
[23]	奚先, 姚姚. 非平稳随机介质模型[J]. 石油地球物理勘探, 2005, 40(1):71-75 doi: 10.3321/j.issn:1000-7210.2005.01.018 XI Xian, YAO Yao. Non-stationary random medium model[J]. Oil Geophysical Prospecting, 2005, 40(1):71-75.] doi: 10.3321/j.issn:1000-7210.2005.01.018
[24]	奚先, 姚姚. 弹性随机介质模型的特征频率[J]. 地球物理学进展, 2005, 20(3):681-687 doi: 10.3969/j.issn.1004-2903.2005.03.017 XI Xian, YAO Yao. The characteristic frequency of the elastic random medium models[J]. Progress in Geophysics, 2005, 20(3):681-687.] doi: 10.3969/j.issn.1004-2903.2005.03.017
[25]	奚先, 姚姚, 顾汉明. 随机溶洞介质模型及其波场模拟[J]. 地球物理学进展, 2005, 20(2):365-369 doi: 10.3969/j.issn.1004-2903.2005.02.018 XI Xian, YAO Yao, GU Hanming. Random cavity medium model and the wave field simulation[J]. Progress in Geophysics, 2005, 20(2):365-369.] doi: 10.3969/j.issn.1004-2903.2005.02.018
[26]	李灿苹, 刘学伟, 勾丽敏, 等. 冷泉活动区天然气水合物上覆水体中气泡羽状流的数值模拟[J]. 中国科学: 地球科学, 2013, 43(3):391-399 LI Canping, LIU Xuewei, GOU Limin, et al. Numerical simulation of bubble plumes in overlying water of gas hydrate in the cold seepage active region[J]. Science China: Earth Sciences, 2013, 43(3):391-399.]
[27]	李灿苹, 勾丽敏, 尤加春, 等. 冷泉活动区气泡羽状流数值模型研究[J]. 海洋地质与第四纪地质, 2017, 37(5):141-150 LI Canping, GOU Limin, YOU Jiachun, et al. Study on numerical models about bubble plumes in the cold seepage active region[J]. Marine Geology & Quaternary Geology, 2017, 37(5):141-150.]
[28]	Korn M. Seismic waves in random media[J]. Journal of Applied Geophysics, 1993, 29(3-4):247-269. doi: 10.1016/0926-9851(93)90007-L
[29]	李灿苹, 刘学伟, 李敏锋, 等. 非均匀地质体散射波特征初探[J]. 石油物探, 2006, 45(2):134-140 doi: 10.3969/j.issn.1000-1441.2006.02.004 LI Canping, LIU Xuewei, LI Minfeng, et al. Preliminary study on scattering wave characteristics of heterogeneous geologic bodies[J]. Geophysical Prospecting for Petroleum, 2006, 45(2):134-140.] doi: 10.3969/j.issn.1000-1441.2006.02.004
[30]	李灿苹. 散射波特征与非均匀地质体对应关系研究[D]. 中国地质大学(北京)博士学位论文, 2006 LI Canping. A study on corresponding relationship between scattering wave characteristics and heterogeneous geologic bodies[D]. Doctor Dissertation of China University of Geosciences (Beijing), 2006.]
[31]	李灿苹, 王南萍, 李志宏. Von Karman型自相关函数模拟随机介质[J]. 物探与化探, 2010, 34(1):98-102 LI Canping, WANG Nanping, LI Zhihong. The application of Von Karman type autocorrelation function to modeling random media[J]. Geophysical and Geochemical Exploration, 2010, 34(1):98-102.]
[32]	杨金秀, Davies R, 肖佃师, 等. BSR及其下伏游离气区的分布特征与控制因素[J]. 石油与天然气地质, 2016, 37(1):87-92 doi: 10.11743/ogg20160112 YANG Jinxiu, Davies R, XIAO Dianshi, et al. Distributions of BSR and underlying free gas zones and related controlling factors[J]. Oil & Gas Geology, 2016, 37(1):87-92.] doi: 10.11743/ogg20160112
[33]	吴淑玉, 徐华宁, 刘俊, 等. 南海神狐海域非均质性天然气水合物储层的分频反演[J]. 海洋地质与第四纪地质, 2020, 40(6):106-120 WU Shuyu, XU Huaning, LIU Jun, et al. Frequency-divided inversion method of heterogenous natural gas hydrates reservoir in the Shenhu area, South China Sea[J]. Marine Geology & Quaternary Geology, 2020, 40(6):106-120.]
[34]	梁劲, 王宏斌, 郭依群. 南海北部陆坡天然气水合物的地震速度研究[J]. 现代地质, 2006, 20(1):123-129 doi: 10.3969/j.issn.1000-8527.2006.01.015 LIANG Jin, WANG Hongbin, GUO Yiqun. Study of seismic velocity about gas hydrates in the northern slope of the South China Sea[J]. Geoscience, 2006, 20(1):123-129.] doi: 10.3969/j.issn.1000-8527.2006.01.015