南海北部神狐海域天然气水合物热激发开采潜力的数值模拟分析

doi:10.11978/j.issn.1009-5470.2012.05.011

Abstract

Abstract: Natural gas hydrate is a new potential energy, so how the gas can be effectively produced from hydrate deposits becomes a hot research topic. Heat stimulation is regarded as another important way for producing hydrate besides depressurization. However, production efficiency and economic feasibility of gas production by heat stimulation are not well understood. In this paper, a physical model for predicting gas production from hydrate deposits by heat stimulation through a vertical well is constructed. The model defines a laminar hydrate system of unit thickness. The reservoir system is discretized densely. We numerically simulate the production potential of hydrate deposit through thermal stimulation by employing the TOUGH+HYDRATE simulator with the characteristic parameters of Shenhu hydrate on the northern continental slope of the South China Sea. Then, we compare and analyze the efficiency of heat stimulations with a pure depressurization operation. Our research shows that the radioactive radius of the high-temperature heat source at the well is very small and that the hydrate dissociation rate is slow. The contribution of thermal injection operation is very small in the inter-productions of heat stimulation and depressurization, and the hydrate dissociation in the processes are mainly aroused by the operation of depressurization.

Key words: gas hydrate, heat stimulation, numerical simulation, Shenhu area>

CLC Number:

P618.13

SU Zheng,HE Yong,WU Neng-you,. Numerical simulation on production potential of hydrate deposits by thermal stimulation[J].Journal of Tropical Oceanography, 2012, 31(5): 74-82.

References

[1] SLOAN E D, KOH C A. Clathrate Hydrates of Natural Gases[M]. 3rd ed. Boca Raton: CRC Press, 2008: 537?550.
[2] MORIDIS G J, COLLETT T, DALLIMORE S, et al. Numerical studies of gas production from several methane hydrate zones at the Mallik Site, Mackenzie Delta, Canada[J]. Journal of Petroleum Science and Engineering, 2004, 43: 219?239.
[3] 郝永卯, 薄启炜, 陈月明, 等. 天然气水合物降压开采实验研究[J]. 石油勘探与开发, 2006, 33(2): 217?220.
[4] 杜庆军, 陈月明, 李淑霞, 等. 天然气水合物注热开采数学模型[J]. 石油勘探与开发, 2007, 34(4): 470?473.
[5] MORIDIS G J, REAGAN M T, KIM S J, et al. Evaluation of the gas production potential of marine hydrate deposits in the Ulleung Basin of the Korean East Sea [J]. SPE Journal, 2009, 14(4): 759?781.
[6] MORIDIS G J, REAGAN M T. Strategies for gas production from oceanic class 3 hydrate accumulations[C]. Houston: Offshore Technology Conference, 2007: OTC 18865.
[7] MORIDIS G J, REAGAN M T. Gas production from oceanic class 2 hydrate accumulations[C]. Houston: Offshore Technology Conference, 2007: OTC 18866.
[8] MORIDIS G J, KOWALSKY M B, PRUESS K. Depressurization-induced gas production from class 1 hydrate deposits [J]. SPE Reservoir Evaluation and Engineering, 2007, 10(5): 458?481.
[9] MORIDIS G J, COLLETT T S, BOSWELL R, et al. Toward production from gas hydrates: current status, assessment of resources, and simulation-based evaluation of technology and potential[J]. SPE Reservoir Evaluation & Engineering, 2009, 12(5): 745?771.
[10] MCDONNELL S L, MAX M D, CHERKIS N Z, et al. Tectono-sedimentary controls on the likelihood of gas hydrate occurrence near Taiwan[J]. Marine Petroleum and Geology, 2000: 9-936.
[11] WANG P, PRELL W, BLUM P. Ocean Drilling Program Leg 184 scientific prospectus South China Sea, site 1144, 184[C] // WANG P, PRELL W, BLUM P. Proceedings of the ocean drilling program, initial reports. College Station, USA: Ocean Drilling Program, Publications Distribution Center, 2000: 1-97.
[12] WU NENGYOU, YANG SHENGXIONG, ZHANG HAIQI, et al. Preliminary discussion on gas hydrate reservoir system of Shenhu Area, North Slope of South China Sea: Proceedings of the 6th International Conference on Gas Hydrates (ICGH 2008), 5700, Vancouver, British Columbia, CANADA, 6?10 July 2008[C/OL]. [2011-07-29]. https: //circle.ubc.ca/bitstream/handle/2429/1177/5700.pdf?sequence=1
[13] WU NENGYOU, YANG SHENGXIONG, ZHANG HAIQI, et al. Gas hydrate system of Shenhu Area, Northern South China Sea: wire-line logging, geochemical results and preliminary resources estimates[C]. Houston: Offshore Technology Conference, 2010: OTC 20485.
[14] MORIDIS G J, KOWALSKY M. Gas production from unconfined Class 2 hydrate accumulations in the oceanic subsurface[M]// MAX M, JOHNSON A H, DILLON W P, et al. Economic Geology of Natural Gas Hydrates. Kluwer Academic/Plenum Publishers, 2006: 249?266.
[15] SU Z, MORIDIS G J, ZHANG K, et al. Numerical investigation of gas production strategy for the hydrate deposits in the Shenhu area[C]. Houston: Offshore Technology Conference, 2010: OTC 20551.
[16] LI G, MORIDIS G J, ZHANG K, LI X. Evaluation of gas production potential from marine gas hydrate deposits in Shenhu area of South China Sea[J]. Energy Fuels 2010, 24: 6018-6033.
[17] CATHLES L M. Changes in sub-water table fluid flow at the end of the Proterozoic and its implications for gas pulsars and MVT lead-zinc deposits [J]. Geofluids, 2007, 7: 209-226.
[18] MORIDIS G J, KOWALSKY M B, PRUESS K. TOUGHFx/ HYDRATE v1. 0 user’s manual: A code for the simulation of system behavior in hydrate-bearing geologic media[M]. Berkeley: Lawrence Berkeley National Laboratory, 2005: 165?187.
[19] VAN GENUCHTEN M T. A closed-form equation for predicting the hydraulic conductivity of unsaturated soils [J]. Soil Sci Soc Am J, 1980, 44: 892?898.
[20] 苏正, 曹运诚, 杨睿, 等. 南海北部神狐海域天然气水合物热开发效率的数值分析研究. 现代地质[J]. 2011, 25(3)?: 1?9.

Numerical simulation on production potential of hydrate deposits by thermal stimulation

PDF (PC)

Like

Knowledge

Cited

Abstract

Cite this article

share this article

References

Related Articles 15

Metrics

Comments

Recommended 0

[1]	WANG Xu, QU Ke, WANG Zijun, YANG Yuanping, WANG Chao, ZHANG Liangbin. Numerical simulation study on the effect of wind on the hydrodynamic characteristics of undular tidal bores seawall [J]. Journal of Tropical Oceanography, 2024, 43(5): 116-130.
[2]	WU Hongbo, LUO Feng, CHEN Zhipeng, ZHU Fei, ZENG Jingwei, ZHANG Chi, LI Ruijie. A novel pattern for predicting the effects of mangrove ecological reconstruction [J]. Journal of Tropical Oceanography, 2024, 43(4): 86-97.
[3]	ZHANG Zheran, HU Junyang, ZHOU Kai, ZHANG Penghui, XING Jiuxing, CHEN Shengli. Storm surge simulations of the coastal area of Shenzhen using different types of typhoon meteorological fields—a case study of Typhoon Mangkhut^* [J]. Journal of Tropical Oceanography, 2023, 42(6): 1-14.
[4]	ZHANG Min, WU Hangxing, LU Yibin, LU Diwen, MI Jie, ZHU Donglin, CHEN Bo. Impact of the coastal reclamations on topography evolution in the Qinzhou Bay, Guangxi [J]. Journal of Tropical Oceanography, 2023, 42(2): 124-131.
[5]	GU Jinghua, ZHU Jianrong, JIN Zhi. Numerical simulation of oil film drift and diffusion after oil spill accident at the Baosteel wharf in the Changjiang Estuary [J]. Journal of Tropical Oceanography, 2022, 41(6): 159-170.
[6]	WANG Renzheng, SHAN Zhengduo, MENG Siyu, GONG Xiang. Interannual variation of subsurface chlorophyll maximum in the northern South China Sea [J]. Journal of Tropical Oceanography, 2021, 40(6): 63-75.
[7]	ZHANG Hua, WEN Xixi, PENG Shiqiu. Numerical simulation of barotropic tides in Mozambique Strait and its adjacent coastal area and energy budget analysis^* [J]. Journal of Tropical Oceanography, 2021, 40(2): 7-16.
[8]	Juan Li, Junliang Liu, Shuqun Cai. Numerical simulation of oceanic near-inertial energy induced by Typhoon Conson [J]. Journal of Tropical Oceanography, 2020, 39(2): 35-43.
[9]	SONG Ruiyou, YU Junfeng, CHAO Caixia, SONG Peng, PAN Guangchao. Fracture identification technique and its application in gas and hydrate exploration [J]. Journal of Tropical Oceanography, 2020, 39(1): 120-129.
[10]	LIU Jinlong, WANG Shuhong, Asiri Obeysekara, XIANG Jiansheng, Pablo Salinas, Christopher Pain, Jonny Rutqvist, YAN Wen. Codes coupling method for simulating hydraulic fracturing within the gas hydrate stability zone [J]. Journal of Tropical Oceanography, 2020, 39(1): 94-105.
[11]	Yan XU, Xiangquan LIU, Rengang SONG, Xianrong CEN, Shuangxi GUO, Shengqi ZHOU. Numerical simulation of diffusive convection staircase [J]. Journal of Tropical Oceanography, 2019, 38(1): 11-18.
[12]	Yi HUANG, Shuhong WANG, Wen YAN, Jun CHENG. Gas hydrate dissociation event and its relationship with submarine slide in Dongsha Area of northern South China Sea [J]. Journal of Tropical Oceanography, 2018, 37(4): 61-69.
[13]	Guangjian ZHONG, Ruwei ZHANG, Hai YI, Changmao FENG, Zhongquan ZHAO. The characteristics of shallow gas reservoir developed in the northern continental slope of South China Sea [J]. Journal of Tropical Oceanography, 2018, 37(3): 80-85.
[14]	Jiliang WANG, Shiguo WU, Yongjian YAO, Bo LI. Advances in geophysical research on gas hydrate reservoirs on the east continental margin of India [J]. Journal of Tropical Oceanography, 2017, 36(6): 90-99.
[15]	Wen WU, Yuhan YAN, Dehai SONG. Study on the tidal dynamics in Daya Bay, China — Part I. Observation and numerical simulation of tidal dynamic system [J]. Journal of Tropical Oceanography, 2017, 36(3): 34-45.