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Zheng Su, Yuncheng Cao, Nengyou Wu and Yong He
Gas hydrates have been attracted a great deal of attention because of their potential as an energy substitute and the climate implications. Drilling and sampling research on the hydrate deposit in the Shenhu Area on the northern continental slope of the ...
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Yi Wang, Jing-Chun Feng, Xiao-Sen Li, Yu Zhang and Gang Li
Natural gas hydrate accumulations were confirmed in the Dongsha Area of the South China Sea by the Guangzhou Marine Geological Survey 2 (GMGS2) scientific drilling expedition in 2013. The drilling sites of GMGS2-01, -04, -05, -07, -08, -09, -11, -12, and...
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Jingsheng Lu, Guangrong Jin, Dongliang Li, Deqing Liang, Yong He, Lingli Shi, Yiqun Zhang and Youming Xiong
Gas from natural gas hydrate (NGH) is priced competitively with gas prices. Most marine NGH is stored in low cementing strata, which easily cause sand production problems, restricting the commercial production and environmental safety of NGH?s developmen...
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Xuyang Guo, Yan Jin, Jingyu Zi, Jiaying Lin, Bolong Zhu, Qian Wen and Qi Jing
Sand production has been identified as a key reason limiting sustained and commercial gas production in methane-hydrate-bearing sediments. Production tests in Canada and Japan were terminated partially because of excessive sand production in pilot wells....
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Jingsheng Lu, Decai Lin, Dongliang Li, Deqing Liang, Long Wen, Siting Wu, Yiqun Zhang, Yong He, Lingli Shi and Youming Xiong
Sand production and sand control studies in non-diagenetic reservoirs are the weak point in the conventional petroleum industry. However, natural gas hydrate (NGH) mainly exists in non-diagenetic strata, and sand production occurs during exploitation, wh...
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Dong Lin, Yuhuan Bu, Changyou Xiang, Chang Lu, Huajie Liu and Shenglai Guo
The decomposition of hydrates can cause serious sand production and collapse problems, hindering the long-term effective production of hydrates. This study proposes a theory for framework reconstruction and reinforcement for deep-water hydrate layers bas...
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Yue Qiu, Xiangfu Wang, Zhaofeng Wang, Wei Liang and Tongbin Zhao
In order to study the influence of damage on the gas production of natural gas hydrate, a multi-physical field theoretical model considering damage effect and coupling thermal-hydraulic-mechanical-chemical (THMC) was established by theoretical analysis a...
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Pranav Thoutam, Parvin Ahmadi Sefiddashti, Faizan Ahmad, Hani Abulkhair, Iqbal Ahmed, Abdulmohsen Al-saiari, Eydhah Almatrafi, Omar Bamaga and Sina Rezaei Gomari
This study considers the integration of multistage flash (MSF) desalination with hydrate-based desalination (HBD) precursor to improve MSF performance in terms of distillate production, longevity, and operational conditions. This is accomplished by a com...
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Jinan Guan, Yian Liang, Shujia Wang, Lihua Wan, Shuanshi Fan, Pibo Su, Wei Zhang and Deqing Liang
The stratigraphic-diffusive type of gas hydrate system is formed by microbial methane produced in a shallow slope space when flowing laterally into hydrate stable zones and is worth studying for both energy supply and academic understanding. A deposition...
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Miaozi Zheng, Renjie Yang, Jianmin Zhang, Yongkai Liu, Songlin Gao and Menglan Duan
Based on the whole life cycle process of the economic exploitation of natural gas hydrate, this paper proposes the basic problem of stabilizing the wellbore for the basic conditions that must be met to ensure the integrity of the wellbore for exploitatio...
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Yiqun Zhang, Wei Wang, Panpan Zhang, Gensheng Li, Shouceng Tian, Jingsheng Lu and Bo Zhang
Sand production is one of the main problems restricting the safe, efficient and sustainable exploitation of marine natural gas hydrate. To explore the sand-control effects of gravel packing, experiments that simulate hydrate extraction in the water-rich ...
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Chen Chen, Lin Yang, Rui Jia, Youhong Sun, Wei Guo, Yong Chen and Xitong Li
Natural gas hydrate (NGH) concentrations hold large reserves of relatively pure unconventional natural gases, consisting mainly of methane. Depressurization is emerging as the optimum conversion technology for converting NGH in its reservoir to its const...
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Khadijeh Qorbani, Bjørn Kvamme and Tatiana Kuznetsova
The ongoing search for new sources of energy has brought natural gas hydrate (NGH) reservoirs to the forefront of attention in both academia and the industry. The amount of gas reserves trapped within these reservoirs surpasses all of the conventional fo...
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Yi Wang, Chun-Gang Xu, Xiao-Sen Li, Gang Li and Zhao-Yang Chen
A complete set of scaling criteria for gas hydrate reservoir of five-spot well system case is derived from the 3D governing equations, involving the mass balance equation, the energy balance equation, the kinetic model, the endothermic model and the phas...
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Jing-Chun Feng, Gang Li, Xiao-Sen Li, Bo Li and Zhao-Yang Chen
To evaluate the gas production performance of the hydrate accumulations in the South China Sea, a numerical simulation with warm brine stimulation combined depressurization has been conducted. A dual horizontal well system is considered as the well confi...
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Gang Li, Xiao-Sen Li, Keni Zhang, Bo Li and Yu Zhang
Based on currently available data from site measurements and the preliminary estimates of the gas production potential from the hydrate accumulations at the SH7 site in the Shenhu Area using the depressurization method with a single horizontal well place...
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Jiafei Zhao, Chuanxiao Cheng, Yongchen Song, Weiguo Liu, Yu Liu, Kaihua Xue, Zihao Zhu, Zhi Yang, Dayong Wang and Mingjun Yang
The heat transfer analysis of hydrate-bearing sediment involved phase changes is one of the key requirements of gas hydrate exploitation techniques. In this paper, experiments were conducted to examine the heat transfer performance during hydrate formati...
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Evgeny Chuvilin, Gennadiy Tipenko, Boris Bukhanov, Vladimir Istomin and Dimitri Pissarenko
The thermal interaction of a gas production well with ice-rich permafrost that bears relict gas hydrates is simulated in Ansys Fluent using the enthalpy formulation of the Stefan problem. The model admits phase changes of pore ice and hydrate (ice meltin...
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Yasuhiko H. Mori, Jun-ichi Ochiai and Ryo Ohmura
This article reports our novel idea about the thermal stimulation of seabed hydrate reservoirs for the purpose of natural gas production. Our idea is to use submarine heat pumps, which are to be placed near the hydrate reservoir and work to recover therm...
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Christian Deusner, Nikolaus Bigalke, Elke Kossel and Matthias Haeckel
The recovery of natural gas from CH4-hydrate deposits in sub-marine and sub-permafrost environments through injection of CO2 is considered a suitable strategy towards emission-neutral energy production. This study shows that the inj...
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