Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane Leakage
Methane leakage during natural gas hydrate (NGH) exploitation is one of the important challenges restricting its safe development, which necessitates further investigation. However, only a few experimental studies have been conducted to characterize the relationship between methane (CH<sub>4&l...
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
MDPI AG
2022-05-01
|
| Series: | Journal of Marine Science and Engineering |
| Subjects: | |
| Online Access: | https://www.mdpi.com/2077-1312/10/5/668 |
| _version_ | 1797498768319315968 |
|---|---|
| author | Yan Xie Jingchun Feng Liwei Sun Junwen Wang Weiqiang Hu Bo Peng Yujun Wang Yi Wang |
| author_facet | Yan Xie Jingchun Feng Liwei Sun Junwen Wang Weiqiang Hu Bo Peng Yujun Wang Yi Wang |
| author_sort | Yan Xie |
| collection | DOAJ |
| description | Methane leakage during natural gas hydrate (NGH) exploitation is one of the important challenges restricting its safe development, which necessitates further investigation. However, only a few experimental studies have been conducted to characterize the relationship between methane (CH<sub>4</sub>) leakage and NGH exploitation. The CH<sub>4</sub> leakage mechanism and controlling factors in the hydrate dissociation process are still unclear. A coupled simulator has been developed to study the CH<sub>4</sub> hydrate exploitation and the possible leakage of CH<sub>4</sub>. The new system overcomes the difficulty of constructing hydrate-free overlying strata and seawater in previous studies and can simulate the in situ natural environment containing hydrate reservoirs, overlying strata and overlying seawater as well. In addition, the simulator integrates the spatial distribution of temperature, pressure and electric resistance in hydrate reservoir systems, and allows for the visual monitoring of the overlying strata and the sampling of overburden gas and liquids. The effectiveness of the coupled simulations was verified through experimental testing. The coupled simulations allowed for the characterization of the CH<sub>4</sub> leakage mechanism and can be used to develop safe strategies for NGH exploitation. |
| first_indexed | 2024-03-10T03:38:06Z |
| format | Article |
| id | doaj.art-e06025e4a84545a6a715f88a5e7cc890 |
| institution | Directory Open Access Journal |
| issn | 2077-1312 |
| language | English |
| last_indexed | 2024-03-10T03:38:06Z |
| publishDate | 2022-05-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Journal of Marine Science and Engineering |
| spelling | doaj.art-e06025e4a84545a6a715f88a5e7cc8902023-11-23T11:40:05ZengMDPI AGJournal of Marine Science and Engineering2077-13122022-05-0110566810.3390/jmse10050668Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane LeakageYan Xie0Jingchun Feng1Liwei Sun2Junwen Wang3Weiqiang Hu4Bo Peng5Yujun Wang6Yi Wang7Research Centre of Ecology & Environment for Coastal Area and Deep Sea, Guangdong University of Technology, Guangzhou 510006, ChinaResearch Centre of Ecology & Environment for Coastal Area and Deep Sea, Guangdong University of Technology, Guangzhou 510006, ChinaResearch Centre of Ecology & Environment for Coastal Area and Deep Sea, Guangdong University of Technology, Guangzhou 510006, ChinaResearch Centre of Ecology & Environment for Coastal Area and Deep Sea, Guangdong University of Technology, Guangzhou 510006, ChinaResearch Centre of Ecology & Environment for Coastal Area and Deep Sea, Guangdong University of Technology, Guangzhou 510006, ChinaGuangdong Eco-Engineering Polytechnic, Guangzhou 510520, ChinaGuangdong Eco-Engineering Polytechnic, Guangzhou 510520, ChinaKey Laboratory of Gas Hydrate, Guangzhou Institute of Energy Conversion, Chinese Academy of Sciences, Guangzhou 510640, ChinaMethane leakage during natural gas hydrate (NGH) exploitation is one of the important challenges restricting its safe development, which necessitates further investigation. However, only a few experimental studies have been conducted to characterize the relationship between methane (CH<sub>4</sub>) leakage and NGH exploitation. The CH<sub>4</sub> leakage mechanism and controlling factors in the hydrate dissociation process are still unclear. A coupled simulator has been developed to study the CH<sub>4</sub> hydrate exploitation and the possible leakage of CH<sub>4</sub>. The new system overcomes the difficulty of constructing hydrate-free overlying strata and seawater in previous studies and can simulate the in situ natural environment containing hydrate reservoirs, overlying strata and overlying seawater as well. In addition, the simulator integrates the spatial distribution of temperature, pressure and electric resistance in hydrate reservoir systems, and allows for the visual monitoring of the overlying strata and the sampling of overburden gas and liquids. The effectiveness of the coupled simulations was verified through experimental testing. The coupled simulations allowed for the characterization of the CH<sub>4</sub> leakage mechanism and can be used to develop safe strategies for NGH exploitation.https://www.mdpi.com/2077-1312/10/5/668natural gas hydratemethane leakageCH<sub>4</sub> hydrate dissociationsimulatordynamic separation |
| spellingShingle | Yan Xie Jingchun Feng Liwei Sun Junwen Wang Weiqiang Hu Bo Peng Yujun Wang Yi Wang Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane Leakage Journal of Marine Science and Engineering natural gas hydrate methane leakage CH<sub>4</sub> hydrate dissociation simulator dynamic separation |
| title | Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane Leakage |
| title_full | Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane Leakage |
| title_fullStr | Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane Leakage |
| title_full_unstemmed | Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane Leakage |
| title_short | Coupled Simulation of Hydrate-Bearing and Overburden Sedimentary Layers to Study Hydrate Dissociation and Methane Leakage |
| title_sort | coupled simulation of hydrate bearing and overburden sedimentary layers to study hydrate dissociation and methane leakage |
| topic | natural gas hydrate methane leakage CH<sub>4</sub> hydrate dissociation simulator dynamic separation |
| url | https://www.mdpi.com/2077-1312/10/5/668 |
| work_keys_str_mv | AT yanxie coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage AT jingchunfeng coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage AT liweisun coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage AT junwenwang coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage AT weiqianghu coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage AT bopeng coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage AT yujunwang coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage AT yiwang coupledsimulationofhydratebearingandoverburdensedimentarylayerstostudyhydratedissociationandmethaneleakage |