Results 21 to 30 of about 3,486 (198)

Numerical Investigation of Depressurization through Horizontal Wells in Methane-Hydrate-Bearing Sediments Considering Sand Production

Journal of Marine Science and Engineering, 2022
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.
Xuyang Guo, Yan Jin, Jingyu Zi, Jiaying Lin, Bolong Zhu, Qian Wen, Qi Jing   +6 more
doaj   +1 more source

Numerical Simulation of Gas Production and Reservoir Stability during CO₂ Exchange in Natural Gas Hydrate Reservoir

Energies, 2022
The prediction of gas productivity and reservoir stability of natural gas hydrate (NGH) reservoirs plays a vital role in the exploitation of NGH. In this study, we developed a THMC (thermal-hydrodynamic-mechanical-chemical) numerical model for the ...
Qingping Li, Shuxia Li, Shuyue Ding, Zhenyuan Yin, Lu Liu, Shuaijun Li   +5 more
doaj   +1 more source

Modeling of the Frictional Behavior at the Contact Surface between the Different Materials Constituting Methane Hydrate Production Well

Journal of MMIJ, 2018
Depressurization process is regarded as the most effective process for gas recovery method from the viewpoints of gas productivity and economic efficiency among in-situ dissociation processes of Methane Hydrate (MH) existing in marine sediments. However,
Masayo KAKUMOTO, Yasuhide SAKAMOTO, Kuniyuki MIYAZAKI, Kazuo AOKI, Akira TAKIGUCHI, Aya YASUI, Jiro MORI   +6 more
doaj   +1 more source

An Experimental Investigation of Feasibility of Gas Huff and Puff for Recovering Crude Oil with Different Viscosities [PDF]

Journal of Petroleum Science and Technology, 2017
Investigating multi cyclic gas (N2 and CO2) huff and puff have been conducted by long sandpack simulations with four different crude oils from Jiangsu oilfield.
Jiang Ping, Zhang Lei, Ge Jijiang, Zhang Guicai, Yuan Yufeng, Wang Yang, Pei Haihua   +6 more
doaj   +1 more source

Numerical Investigation of Hydrate Dissociation Performance in the South China Sea with Different Horizontal Well Configurations

Energies, 2014
Based on the available measurement data and literature on the hydrate deposits of the South China Sea, a numerical simulation with a new dual horizontal well system has been carried out.
Jing-Chun Feng, Xiao-Sen Li, Gang Li, Bo Li, Zhao-Yang Chen, Yi Wang   +5 more
doaj   +1 more source

Numerical Simulation of Gas Production Behavior Using Stepwise Depressurization with a Vertical Well in the Shenhu Sea Area Hydrate Reservoir of the South China Sea

Journal of Marine Science and Engineering
Stepwise depressurization is an important depressurization strategy in the development of natural gas hydrates. This work numerically analyzes the effects of different depressurization gradients and constant pressure durations on gas and water production
Tinghui Wan, Zhanzhao Li, Hongfeng Lu, Mingming Wen, Zongheng Chen, Lieyu Tian, Qi Li, Jia Qu, Jingli Wang   +8 more
doaj   +1 more source

Evolution law of physical parameters and hydrate reservoir productivity under multi-stage depressurization

Petroleum
In the process of gas hydrate depressurization production, the reasonable depressurization rhythm and depressurization amplitude have significant impact on improving production and reducing engineering geological risks. Considering the basic stability of
Na Wei, Chao Zhang, Li Zhou, Shenghui Zhang, Shouwei Zhou, Liehui Zhang, Jinzhou Zhao, Richard B.Coffin, Bjørn Kvamme   +8 more
doaj   +1 more source

Comparison and Optimization of Methane Hydrate Production Process Using Different Methods in a Single Vertical Well

Energies, 2018
Natural gas hydrate (NGH) is a potential type of clean and efficient energy that is widely distributed in the ocean and permafrost, and most of the present researches are mainly focused on finding out efficient exploitation methods. Taking the effects of
Yun-Pei Liang, Shu Liu, Qing-Cui Wan, Bo Li, Hang Liu, Xiao Han   +5 more
doaj   +1 more source

Experimental Study on CO₂ Sequestration in Marine Environments During Hydrate Recovery by Depressurization Combined with Replacement

Journal of Marine Science and Engineering
To protect the environment, sequestering CO2 during the extraction of natural gas hydrates is a highly promising carbon-neutral technology. We investigated methane extraction and CO2 storage by a combined depressurization and CO2-injection method. In the
Chi Zhang, Jianzhong Zhao, Dong Yang, Qiang Gao   +3 more
doaj   +1 more source

Ferroelectric Quantum Dots for Retinomorphic In‐Sensor Computing

Advanced Materials, EarlyView.
This work has provided a protocol for fabricating retinomorphic phototransistors by integrating ferroelectric ligands with quantum dots. The resulting device combines ferroelectricity, optical responsiveness, and low‐power operation to enable adaptive signal amplification and high recognition accuracy under low‐light conditions, while supporting ...
Tingyu Long, Huanyu Zhou, Jaewan Ko, Hongwei Tan, Jaemin Lim, Yanfei Zhao, Daehan Kang, Eojin Yoon, Gyeong‐Tak Go, Somin Kim, Seung‐Woo Lee, Chan‐Yul Park, Hyojun Choi, Hyeran Kim, Hyung Joong Yun, Sung Hyuk Park, Kwan Sik Park, Jeong Woo Park, Mungeun Kim, Yong Soo Cho, Ho Won Jang, Wenqiang Yang, Min Hyuk Park, Wan Ki Bae, Sebastiaan van Dijken, Joona Bang, Tae‐Woo Lee   +26 more
wiley   +1 more source