Journal ArticleDOI
Unlocking the deepwater natural gas hydrate's commercial potential with extended reach wells from shallow water: Review and an innovative method
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In this article, an innovative method for unlocking the deepwater natural gas hydrate (NGH) commercial potential with ERWs from shallow water is proposed, taking full advantage of the formation geothermal heat beneath shallow water, combining depressurization with the thermal simulation technique though linking the deep-water NGH reservoirs with multiple free gas deposits in shallower water with a single wellbore.Abstract:
Deepwater natural gas hydrate (NGH) is generally accepted as a promising energy source for humanity in the coming future due to its huge amount of available reserves on earth. However, as deepwater NGH reservoirs always have restricted accessibility, harsh engineering conditions and high operation risk, their development has been considered technically and economically less viable. Worldwide field production tests have indicated that the current techniques are not able to commercially develop deepwater NGH independently. Therefore, technological revolutions for deepwater NGH development is pressing to unlock deepwater NGH's commercial potential. The purpose of this work is twofold. First, the state-of-art research on the NGH reservoirs development and extended reach wells (ERWs) technology are comprehensively reviewed. In addition to summarize the previous research achievements, the limitations and insightful suggestions are put forward for future deepwater NGH development. Second, inspired by the development of ERWs technology and its great success in maximum depletion of the offshore unconventional oil & gas reservoirs, an innovative method for unlocking the deepwater NGH's commercial potential with ERWs from shallow water is proposed. With the benefits of improving the deepwater NGH reservoirs drainage, taking full advantage of the formation geothermal heat beneath shallow water, combining depressurization with the thermal simulation technique though linking the deepwater NGH reservoirs with multiple free gas deposits in shallower water with a single wellbore, getting free of engineering and geological risks in deepwater, minimizing the cost and environmental footprint, the innovative method may promote the commercial viability of deepwater NGH development and trigger the next boom in the unconventional oil & gas development after shale gas.read more
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Journal ArticleDOI
Sand Production Management during Marine Natural Gas Hydrate Exploitation: Review and an Innovative Solution
Nengyou Wu,Yanlong Li,Qiang Chen,Changling Liu,Yurong Jin,Yurong Jin,Mingjian Tan,Lin Dong,Gaowei Hu +8 more
TL;DR: In this article, sustainable, efficient, and safe NGH development is discussed in the context of natural gas hydrate (NGH) as a promising alternative energy source for renewable energy.
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Optimization and analysis of gravel packing parameters in horizontal wells for natural gas hydrate production
Yanlong Li,Yanlong Li,Nengyou Wu,Deli Gao,Deli Gao,Qiang Chen,Changling Liu,Daoyong Yang,Yurong Jin,Yurong Jin,Fulong Ning,Mingjian Tan,Gaowei Hu +12 more
TL;DR: In this article, a virtual horizontal well located at the site SH2, northern South China Sea is involved to optimize packing operation parameters and analyze factors that affect the safety and effectiveness of packing operation.
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Ice behaviors and heat transfer characteristics during the isothermal production process of methane hydrate reservoirs by depressurization
TL;DR: In this article, different reservoir temperatures (276.2, 277.2 and 278.2 K) and production pressures (2.3, 2.6 and 3.1 MPa) were employed to investigate the methane hydrate production process.
Journal ArticleDOI
Recent Advances on Natural Gas Hydrate Exploration and Development in the South China Sea
Jian-Wu Liu,Xiao-Sen Li +1 more
TL;DR: In this paper, natural gas hydrate (NGH) is regarded as the next alternate energy resource to meet the energy transition for a net-zero society, and the world's gas demand is rapidly increasing.
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Thermodynamics analysis and temperature response mechanism during methane hydrate production by depressurization
TL;DR: In this paper , the thermodynamics behaviors and temperature response mechanism during methane hydrate production by depressurization are still unclear, and the results reveal the temperature response differences before, in and after the hydrate dissociation process and provide direct thermodynamic criterion for the field monitoring of methane hyrate production.
References
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Journal ArticleDOI
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Journal ArticleDOI
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TL;DR: In this article, a numerical simulation with a new dual horizontal well system has been carried out, where warm brine stimulation combined with depressurization is employed as the production method, and the simulation results show that the effects of hydrate dissociation rate, gas to water ratio, and energy ratio are all better than the previous work in which the dual horizontal wells are placed in the same vertical plane.
Journal ArticleDOI
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