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#           Gas Hydrate Energy Research – 2024 Update                    Active

      By Central Energy Resources Science Center      January 19, 2024    

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Review of International Gas Hydrate Research and Development Activities

Gas hydrates may represent an important future source of energy; however, much remains to be learned about their characteristics and occurrence in nature. Gas hydrates have been encountered, recovered, or inferred to exist in numerous sedimentary basins in Arctic permafrost settings, regions of alpine permafrost, marine sediments of outer continental margins and in deep lakes. Despite the great abundance of potential gas hydrate resources in the world, a large portion of these resources reside in clay-rich sediments and fracture dominated reservoir systems, and are not generally considered producible with existing technology, but may have future potential with the emergence of new technologies. For a large portion of the world, gas hydrate in sand reservoirs has become a viable production target and the focus of the first production testing efforts. Short term production tests in northern Canada and Alaska have demonstrated that natural gas can be produced from hydrates hosted in sand-dominated sediments with existing conventional production technologies. Production can be achieved through the depressurization method and possibly by more complex methods such as molecular substitution (e.g., CO2-CH4 exchange). In 2013, a gas hydrate production test was conducted in a marine setting in the offshore of Japan. An additional test was conducted in Japan in 2017 to further evaluate alternative well completion technologies. Also in 2017, China initiated a 60-day gas hydrate production test in the Shenhu region of the South China Sea. From October 2019 to April 2020 the China Geological Survey conducted a second gas hydrate production test in the Shenhu region. Most recently, in October of 2023, an US and Japanese partnership launched an extended gas hydrate depressurization production test in the Alaska North Slope. This report reviews the results of recent geologic and production testing studies associated with gas hydrate accumulations on the Alaska North Slope, in the Gulf of Mexico, the Nankai Trough in the offshore of Japan, the South China Sea, and the Bay of Bengal in the offshore of India.

 

 

**Recent Gas Hydrate R&D Activities** 

**Alaska North Slope Activities** 

The U.S. Department of Energy (DOE) National Energy Technology Laboratory, the Japan Oil, Gas and Metals National Corporation (JOGMEC), and the U.S. Geological Survey (USGS) are leading an effort to conduct an extended gas hydrate production test in the Alaska North Slope (ANS). The ongoing production test in Alaska required the drilling of an initial stratigraphic test well (STW) to confirm the geologic conditions of the proposed test site. The Hydrate-01 STW was completed in December 2018 in cooperation with the Alaska Prudhoe Bay Unit Interest Owners. With the successful confirmation of the presence of hydrate-bearing reservoirs suitable for production testing at the site of the Hydrate-01 STW, the next goal of the ANS gas hydrate production testing effort was to establish the operational plan for the planned extended depressurization test and the construction of the test site in the Prudhoe Bay Unit. The reported plan for the “Alaska Gas Hydrate Production Field Experiment” is to conduct a long-term (as along as 9-12 months) scientific reservoir response test utilizing depressurization production technology, which was reported to have started in October of 2024. 

References 

https://pubs.acs.org/doi/10.1021/acs.energyfuels.2c00327 

https://pubs.acs.org/doi/full/10.1021/acs.energyfuels.1c04087 

https://www.netl.doe.gov/node/8020 

https://docs.publicnow.com/viewDoc?filename=106881%5CEXT%5C79589B9D7333C86F0A1F06E350FEAE53F45238DC_434496F2E8D39563B40443E93853937279EE4B18.PDF 

https://www.energy.gov/fecm/articles/us-department-energy-and-partners-test-gas-hydrates-reservoir-response-alaska-north 

https://www.energy.gov/fecm/articles/alaska-north-slope-gas-hydrates-site-visit 

https://www.energy.gov/fecm/articles/project-update-doe-and-international-partners-start-conduct-gas-hydrates-production#:~:text=The%20installation%20of%20wells%2C%20which,in%202018%20and%202022%20respectively 

**Gulf of Mexico Activities** 

One of the more significant gas hydrate research projects in the US has been the Gulf of Mexico (GOM) gas hydrate scientific drilling program being led by the University of Texas (UT) Austin and funded by the U.S. Department of Energy (DOE). As part of this effort, UT and their project research partners have published two special issues of the Bulletin of the American Association of Petroleum Geologists that summarize the operational and scientific results of the 2017 UT-GOM2-1 pressure coring expedition in the Gulf of Mexico, which were published in September 2020 and May 2022. The 2017 UT-GOM2-1 pressure coring expedition, as executed in the Green Canyon Block 955 (GC955), was initially described in an industry hazard site review study as a confluence of sand-prone gas hydrate-bearing facies that are closely associated with abundant gas migration pathways. The JIP Leg II logging while drilling expedition conducted in 2009 confirmed the occurrence of gas hydrate associated with the previous seismic inferred sand-prone facies in GC955. In 2014, the DOE partnered with UT to further develop state-of-the-art pressure coring and pressure core evaluation equipment to gather, disseminate, and analyze gas hydrate samples. In May 2017, UT conducted the UT-GOM2-1 gas hydrate pressure coring expedition in Block GC955. UT also established plans for a second conventional and pressure coring expedition to be conducted in the Walker Ridge Block 313 area of the Terrebonne Basin in the Gulf of Mexico. UT has reported that shipboard science operations associated with UT-GOM2-2 Expedition were conducted in August of 2023. 

References 

https://pubs.geoscienceworld.org/aapgbull/issue/104/9 

https://pubs.geoscienceworld.org/aapgbull/issue/106/5 

https://ig.utexas.edu/energy/gom2-methane-hydrates-at-the-university-of-texas/ 

https://ig.utexas.edu/energy/genesis-of-methane-hydrate-in-coarse-grained-systems/expedition-ut-gom2-1/ 

https://ig.utexas.edu/energy/gom2-methane-hydrates-at-the-university-of-texas/gom2-2-expedition/ 

https://ig.utexas.edu/energy/gom2-methane-hydrates-at-the-university-of-texas/gom2-news-media/ 

**Nankai Trough Japan Activities** 

In 2001, the Japan Ministry of Economy, Trade, and Industry (METI) launched a new project entitled “Japan’s Methane Hydrate Exploitation Program,” operated by the Methane Hydrate 2001 Consortium (also known as MH21), to evaluate the resource potential of deepwater gas hydrates in the Nankai Trough. The MH21 program culminated in 2013 with the completion of the first-ever test of gas production from marine gas hydrates. The deepwater drilling vessel D/V Chikyu was used for drilling and coring operations to establish the MH21 Nankai Trough 2012-2013 test site, named the AT1 site. At the AT1 site, one production well (AT1-P), two monitoring wells (AT1-MC and MT1), and one core well (AT1-C) were established in 2012. The cumulative gas and water produced during the 6 day 2013 test were approximately 119,500 m3 and 1,250 m3, respectively. Based on the results of this first test, a second test was designed and executed in 2016 to acquire more quantitative data for the assessment of various offshore gas hydrate production completion technologies. In June of 2017, METI announced the completion of the second gas hydrate production test in the Nankai Trough. The amount of gas produced from the first of two wells established during the 2017 Nankai Trough gas hydrate production test was approximately 35,000 m3 in a total of 12 days; a second well produced approximately 200,000 m3 of gas in a total in 24 days. 

References 

https://pubs.acs.org/doi/10.1021/acs.energyfuels.6b03143 

https://pubs.rsc.org/en/content/articlelanding/2019/ra/c9ra00755e#!divAbstract 

https://www.mh21japan.gr.jp/english/news_264.html 

**South China Sea Activities** 

Since 2003, the China Geological Survey (CGS) has been assessing natural gas hydrate resources in the Shenhu area in the South China Sea (SCS). In 2015 and 2016, the CGS carried out two gas hydrate scientific drilling expeditions and discovered several significant gas hydrate occurrences. In 2017, the CGS conducted their first gas hydrate production test in the Shenhu area of the SCS. The test lasted for 60 days with a total volume of produced gas exceeding 309,000 m3. The China Ministry of Natural Resources reported on 27-March-2020 that several breakthroughs were made during a second gas hydrate production test in the SCS. The March 2020 test was also conducted in the Shenhu area at a water depth of 1,225 m; the test produced 861,400 m3 of gas, with an average daily gas production rate of 28,700 m3. The second gas hydrate depressurization test in the Shenhu area featured directional drilling and a horizontal completion, reservoir stimulation, and the deployment of advanced sand control systems. In comparison to the first test, both the cumulative gas production volumes and the daily gas production rates were much greater during the second test in 2020. 

References 

https://www.sciencedirect.com/science/article/pii/S209651921930014X 

https://www.sciencedirect.com/science/article/pii/S2096519220300719 

**Bay of Bengal India Activities** 

The India National Gas Hydrate Program (NGHP) was initiated by the Ministry of Petroleum and Natural Gas (MoP&NG) in 1997 and is coordinated by the Directorate General of Hydrocarbons. The NGHP has supported numerous laboratory, modeling, and field studies, including the NGHP-01 Expedition in 2006 and NGHP-02 Expedition in 2015. During the NGHP-01 Expedition, a total of 21 drill sites were established in the Kerala-Konkan (1 site), Krishna-Godavari (15 sites), Mahanadi (4 sites), and Andaman (1 site) deep offshore areas. NGHP-01 drilling results yielded evidence of gas hydrate at most of the sites established during the expedition. Gas hydrates discovered during NGHP-01 were found to be mostly filling fractures in fine-grained sediments, a morphology that is generally not considered conducive to exploitation by conventional production methods. In response to the results of the NGHP-01 Expedition, NGHP-02 was designed with the primary goal of discovering and characterizing the geologic controls on highly saturated gas hydrate occurrences in sand reservoirs that are believed to be more suitable for production. The NGHP-02 Expedition was led by the Oil and Natural Gas Corporation Limited of India on the behalf of the MoP&NG. The analysis of the data and core samples collected during the NGHP-02 Expedition confirmed the presence of extensive sand-rich depositional systems throughout the deepwater portions of the Krishna-Godavari and Mahanadi Basins in the Bay of Bengal. Two areas of the Krishna-Godavari Basin, referred to as Areas B and C under the NGHP-02 effort, was shown to contain substantial gas hydrate accumulations in sand-rich systems and therefore represent candidate sites for future potential energy exploitation. 

References

https://www.sciencedirect.com/journal/marine-and-petroleum-geology/vol/108/suppl/C 

https://www.sciencedirect.com/science/article/pii/S0264817219302284

### Study Area

### Contacts

#### Timothy  S Collett

##### Senior Scientist

Central Energy Resources Science Center

tcollett@usgs.gov

303-236-5731

### Explore Search

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                            - Research
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View All **

link

November 2, 2018

####                 Gas Hydrates              

Energy and Minerals Mission Area, Energy Resources Program, Central Energy Resources Science Center, Deep Sea Exploration, Mapping and Characterization

link

November 2, 2018

####   Gas Hydrates

Learn More

April 27, 2022

####                 Scientific results of the Hydrate-01 Stratigraphic Test Well Program, Western Prudhoe Bay Unit, Alaska North Slope              

Energy Resources Program, Central Energy Resources Science Center

March 1, 2022

####                 Planning and operations of the Hydrate 01 Stratigraphic Test Well, Prudhoe Bay Unit, Alaska North Slope              

Energy Resources Program, Central Energy Resources Science Center, Geology, Geophysics, and Geochemistry Science Center

October 1, 2019

####                 India National Gas Hydrate Program Expedition 02 Summary of Scientific Results: Gas hydrate systems along the eastern continental margin of India              

Energy Resources Program, Central Energy Resources Science Center

October 1, 2019

####                 Preface: Marine gas hydrate reservoir systems along the eastern continental margin of India: Results of the National Gas Hydrate Program Expedition 02              

Energy Resources Program, Central Energy Resources Science Center

October 1, 2019

####                 India National Gas Hydrate Program Expedition-02: Operational and technical summary              

Energy Resources Program, Central Energy Resources Science Center

October 1, 2019

####                 India National Gas Hydrate Program Expedition 02 summary of scientific results: Numerical simulation of reservoir response to depressurization              

Energy Resources Program, Central Energy Resources Science Center

October 16, 2018

####                 India National Gas Hydrate Program Expedition 02 summary of scientific results:  Evaluation of natural gas hydrate-bearing pressure cores              

Woods Hole Coastal and Marine Science Center

July 26, 2018

####                 Multi-measurement approach for establishing the base of gas hydrate occurrence in the Krishna-Godavari Basin for sites cored during Expedition NGHP-02 in the offshore of India              

Woods Hole Coastal and Marine Science Center

May 25, 2018

####                 Downhole physical property-based description of a gas hydrate petroleum system in NGHP-02 Area C: A channel, levee, fan complex in the Krishna-Godavari Basin offshore eastern India              

Natural Hazards Mission Area, Energy Resources Program, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center

                  - Overview  
Review of International Gas Hydrate Research and Development Activities

Gas hydrates may represent an important future source of energy; however, much remains to be learned about their characteristics and occurrence in nature. Gas hydrates have been encountered, recovered, or inferred to exist in numerous sedimentary basins in Arctic permafrost settings, regions of alpine permafrost, marine sediments of outer continental margins and in deep lakes. Despite the great abundance of potential gas hydrate resources in the world, a large portion of these resources reside in clay-rich sediments and fracture dominated reservoir systems, and are not generally considered producible with existing technology, but may have future potential with the emergence of new technologies. For a large portion of the world, gas hydrate in sand reservoirs has become a viable production target and the focus of the first production testing efforts. Short term production tests in northern Canada and Alaska have demonstrated that natural gas can be produced from hydrates hosted in sand-dominated sediments with existing conventional production technologies. Production can be achieved through the depressurization method and possibly by more complex methods such as molecular substitution (e.g., CO2-CH4 exchange). In 2013, a gas hydrate production test was conducted in a marine setting in the offshore of Japan. An additional test was conducted in Japan in 2017 to further evaluate alternative well completion technologies. Also in 2017, China initiated a 60-day gas hydrate production test in the Shenhu region of the South China Sea. From October 2019 to April 2020 the China Geological Survey conducted a second gas hydrate production test in the Shenhu region. Most recently, in October of 2023, an US and Japanese partnership launched an extended gas hydrate depressurization production test in the Alaska North Slope. This report reviews the results of recent geologic and production testing studies associated with gas hydrate accumulations on the Alaska North Slope, in the Gulf of Mexico, the Nankai Trough in the offshore of Japan, the South China Sea, and the Bay of Bengal in the offshore of India.

 

 

**Recent Gas Hydrate R&D Activities** 

**Alaska North Slope Activities** 

The U.S. Department of Energy (DOE) National Energy Technology Laboratory, the Japan Oil, Gas and Metals National Corporation (JOGMEC), and the U.S. Geological Survey (USGS) are leading an effort to conduct an extended gas hydrate production test in the Alaska North Slope (ANS). The ongoing production test in Alaska required the drilling of an initial stratigraphic test well (STW) to confirm the geologic conditions of the proposed test site. The Hydrate-01 STW was completed in December 2018 in cooperation with the Alaska Prudhoe Bay Unit Interest Owners. With the successful confirmation of the presence of hydrate-bearing reservoirs suitable for production testing at the site of the Hydrate-01 STW, the next goal of the ANS gas hydrate production testing effort was to establish the operational plan for the planned extended depressurization test and the construction of the test site in the Prudhoe Bay Unit. The reported plan for the “Alaska Gas Hydrate Production Field Experiment” is to conduct a long-term (as along as 9-12 months) scientific reservoir response test utilizing depressurization production technology, which was reported to have started in October of 2024. 

References 

https://pubs.acs.org/doi/10.1021/acs.energyfuels.2c00327 

https://pubs.acs.org/doi/full/10.1021/acs.energyfuels.1c04087 

https://www.netl.doe.gov/node/8020 

https://docs.publicnow.com/viewDoc?filename=106881%5CEXT%5C79589B9D7333C86F0A1F06E350FEAE53F45238DC_434496F2E8D39563B40443E93853937279EE4B18.PDF 

https://www.energy.gov/fecm/articles/us-department-energy-and-partners-test-gas-hydrates-reservoir-response-alaska-north 

https://www.energy.gov/fecm/articles/alaska-north-slope-gas-hydrates-site-visit 

https://www.energy.gov/fecm/articles/project-update-doe-and-international-partners-start-conduct-gas-hydrates-production#:~:text=The%20installation%20of%20wells%2C%20which,in%202018%20and%202022%20respectively 

**Gulf of Mexico Activities** 

One of the more significant gas hydrate research projects in the US has been the Gulf of Mexico (GOM) gas hydrate scientific drilling program being led by the University of Texas (UT) Austin and funded by the U.S. Department of Energy (DOE). As part of this effort, UT and their project research partners have published two special issues of the Bulletin of the American Association of Petroleum Geologists that summarize the operational and scientific results of the 2017 UT-GOM2-1 pressure coring expedition in the Gulf of Mexico, which were published in September 2020 and May 2022. The 2017 UT-GOM2-1 pressure coring expedition, as executed in the Green Canyon Block 955 (GC955), was initially described in an industry hazard site review study as a confluence of sand-prone gas hydrate-bearing facies that are closely associated with abundant gas migration pathways. The JIP Leg II logging while drilling expedition conducted in 2009 confirmed the occurrence of gas hydrate associated with the previous seismic inferred sand-prone facies in GC955. In 2014, the DOE partnered with UT to further develop state-of-the-art pressure coring and pressure core evaluation equipment to gather, disseminate, and analyze gas hydrate samples. In May 2017, UT conducted the UT-GOM2-1 gas hydrate pressure coring expedition in Block GC955. UT also established plans for a second conventional and pressure coring expedition to be conducted in the Walker Ridge Block 313 area of the Terrebonne Basin in the Gulf of Mexico. UT has reported that shipboard science operations associated with UT-GOM2-2 Expedition were conducted in August of 2023. 

References 

https://pubs.geoscienceworld.org/aapgbull/issue/104/9 

https://pubs.geoscienceworld.org/aapgbull/issue/106/5 

https://ig.utexas.edu/energy/gom2-methane-hydrates-at-the-university-of-texas/ 

https://ig.utexas.edu/energy/genesis-of-methane-hydrate-in-coarse-grained-systems/expedition-ut-gom2-1/ 

https://ig.utexas.edu/energy/gom2-methane-hydrates-at-the-university-of-texas/gom2-2-expedition/ 

https://ig.utexas.edu/energy/gom2-methane-hydrates-at-the-university-of-texas/gom2-news-media/ 

**Nankai Trough Japan Activities** 

In 2001, the Japan Ministry of Economy, Trade, and Industry (METI) launched a new project entitled “Japan’s Methane Hydrate Exploitation Program,” operated by the Methane Hydrate 2001 Consortium (also known as MH21), to evaluate the resource potential of deepwater gas hydrates in the Nankai Trough. The MH21 program culminated in 2013 with the completion of the first-ever test of gas production from marine gas hydrates. The deepwater drilling vessel D/V Chikyu was used for drilling and coring operations to establish the MH21 Nankai Trough 2012-2013 test site, named the AT1 site. At the AT1 site, one production well (AT1-P), two monitoring wells (AT1-MC and MT1), and one core well (AT1-C) were established in 2012. The cumulative gas and water produced during the 6 day 2013 test were approximately 119,500 m3 and 1,250 m3, respectively. Based on the results of this first test, a second test was designed and executed in 2016 to acquire more quantitative data for the assessment of various offshore gas hydrate production completion technologies. In June of 2017, METI announced the completion of the second gas hydrate production test in the Nankai Trough. The amount of gas produced from the first of two wells established during the 2017 Nankai Trough gas hydrate production test was approximately 35,000 m3 in a total of 12 days; a second well produced approximately 200,000 m3 of gas in a total in 24 days. 

References 

https://pubs.acs.org/doi/10.1021/acs.energyfuels.6b03143 

https://pubs.rsc.org/en/content/articlelanding/2019/ra/c9ra00755e#!divAbstract 

https://www.mh21japan.gr.jp/english/news_264.html 

**South China Sea Activities** 

Since 2003, the China Geological Survey (CGS) has been assessing natural gas hydrate resources in the Shenhu area in the South China Sea (SCS). In 2015 and 2016, the CGS carried out two gas hydrate scientific drilling expeditions and discovered several significant gas hydrate occurrences. In 2017, the CGS conducted their first gas hydrate production test in the Shenhu area of the SCS. The test lasted for 60 days with a total volume of produced gas exceeding 309,000 m3. The China Ministry of Natural Resources reported on 27-March-2020 that several breakthroughs were made during a second gas hydrate production test in the SCS. The March 2020 test was also conducted in the Shenhu area at a water depth of 1,225 m; the test produced 861,400 m3 of gas, with an average daily gas production rate of 28,700 m3. The second gas hydrate depressurization test in the Shenhu area featured directional drilling and a horizontal completion, reservoir stimulation, and the deployment of advanced sand control systems. In comparison to the first test, both the cumulative gas production volumes and the daily gas production rates were much greater during the second test in 2020. 

References 

https://www.sciencedirect.com/science/article/pii/S209651921930014X 

https://www.sciencedirect.com/science/article/pii/S2096519220300719 

**Bay of Bengal India Activities** 

The India National Gas Hydrate Program (NGHP) was initiated by the Ministry of Petroleum and Natural Gas (MoP&NG) in 1997 and is coordinated by the Directorate General of Hydrocarbons. The NGHP has supported numerous laboratory, modeling, and field studies, including the NGHP-01 Expedition in 2006 and NGHP-02 Expedition in 2015. During the NGHP-01 Expedition, a total of 21 drill sites were established in the Kerala-Konkan (1 site), Krishna-Godavari (15 sites), Mahanadi (4 sites), and Andaman (1 site) deep offshore areas. NGHP-01 drilling results yielded evidence of gas hydrate at most of the sites established during the expedition. Gas hydrates discovered during NGHP-01 were found to be mostly filling fractures in fine-grained sediments, a morphology that is generally not considered conducive to exploitation by conventional production methods. In response to the results of the NGHP-01 Expedition, NGHP-02 was designed with the primary goal of discovering and characterizing the geologic controls on highly saturated gas hydrate occurrences in sand reservoirs that are believed to be more suitable for production. The NGHP-02 Expedition was led by the Oil and Natural Gas Corporation Limited of India on the behalf of the MoP&NG. The analysis of the data and core samples collected during the NGHP-02 Expedition confirmed the presence of extensive sand-rich depositional systems throughout the deepwater portions of the Krishna-Godavari and Mahanadi Basins in the Bay of Bengal. Two areas of the Krishna-Godavari Basin, referred to as Areas B and C under the NGHP-02 effort, was shown to contain substantial gas hydrate accumulations in sand-rich systems and therefore represent candidate sites for future potential energy exploitation. 

References

https://www.sciencedirect.com/journal/marine-and-petroleum-geology/vol/108/suppl/C 

https://www.sciencedirect.com/science/article/pii/S0264817219302284
Study AreaContactsTimothy  S CollettSenior ScientistCentral Energy Resources Science CenterEmailtcollett@usgs.govPhone303-236-5731Explore Search- Gas Hydrates
- Research
- Energy
View All ** 
                  - Science  linkNovember 2, 2018                Gas Hydrates                Central Energy Resources Science Center - Gas Hydrates Project PageByEnergy and Minerals Mission Area, Energy Resources Program, Central Energy Resources Science Center, Deep Sea Exploration, Mapping and CharacterizationlinkNovember 2, 2018  Gas Hydrates  Central Energy Resources Science Center - Gas Hydrates Project PageLearn More** 
                  - Publications  LabelApril 27, 2022                Scientific results of the Hydrate-01 Stratigraphic Test Well Program, Western Prudhoe Bay Unit, Alaska North Slope              The United States Department of Energy, the MH21-S Research Consortium of Japan, and the United States Geological Survey are collaborating to enable gas hydrate scientific drilling and extended-duration reservoir response testing on the Alaska North Slope. To feasibly execute such a test, a location is required that is accessible from existing roads and gravel pads and that can be occupied withoutAuthorsRoy Boswell, Timothy S. Collett, Koji Yamamoto, Norihiro Okinaka, Robert Hunter, Kiyofumi Suzuki, Machiko Tamaki, Jun Yoneda, David Itter, Seth S. Haines, Evgeniy Myshakin, George MoridisByEnergy Resources Program, Central Energy Resources Science CenterMarch 1, 2022                Planning and operations of the Hydrate 01 Stratigraphic Test Well, Prudhoe Bay Unit, Alaska North Slope              The National Energy Technology Laboratory, the Japan Oil, Gas and Metals National Corporation, and the U.S. Geological Survey are leading an effort to conduct an extended gas hydrate production test in northern Alaska. The proposed production test required the drilling of an initial stratigraphic test well (STW) to confirm the geologic conditions of the proposed test site. This well was completedAuthorsTimothy S. Collett, Margarita V. Zyrianova, Norihiro Okinaka, Motoi Wakatsuki, Ray Boswell, Scott Marsteller, David Minge, Stephen Crumley, David Itter, Robert D. Hunter, Ana Garcia-Ceballos, Ge JinByEnergy Resources Program, Central Energy Resources Science Center, Geology, Geophysics, and Geochemistry Science CenterOctober 1, 2019                India National Gas Hydrate Program Expedition 02 Summary of Scientific Results: Gas hydrate systems along the eastern continental margin of India              The primary objectives of the India National Gas Hydrate Program Expedition 02 (NGHP-02) were to obtain new data on the occurrence of gas hydrate systems and to advance the understanding of the controls on the formation of gas hydrate accumulations in the offshore of India.  In accordance with the ultimate overall goal of the NGHP effort to assess the energy resource potential of marine gas hydratAuthorsTimothy S. Collett, Ray Boswell, William F. Waite, Pushpendra Kumar, Sandip Kumar Roy, Krishan Chopra, Sunil Kumar Singh, Yasuhiro Yamada, Norio Tenma, John Pohlman, Margarita ZyrianovaByEnergy Resources Program, Central Energy Resources Science CenterOctober 1, 2019                Preface: Marine gas hydrate reservoir systems along the eastern continental margin of India: Results of the National Gas Hydrate Program Expedition 02              The 2015 India National Gas Hydrate Program (NGHP) Expedition 02 was conducted to obtain new information on the occurrence of gas hydrate systems and to advance the understanding of geologic controls on the formation of gas hydrate accumulations in the offshore of India. The ultimate goal of the NGHP effort is to assess the energy resource potential of marine gas hydrates in India. The Guest EditoAuthorsTimothy S. Collett, Pushpendra Kumar, Ray Boswell, William WaiteByEnergy Resources Program, Central Energy Resources Science CenterOctober 1, 2019                India National Gas Hydrate Program Expedition-02: Operational and technical summary              The India National Gas Hydrate Program is being steered by the government of India's Ministry of Petroleum and Natural Gas (MoPNG) with participation of Directorate General of Hydrocarbons (DGH), Oil and Natural Gas Corporation Limited (ONGC), and the National Oil Companies and Research Institutes of India. The India National Gas Hydrate Program Expedition 01 (NGHP-01) established the presence ofAuthorsPushpendra Kumar, Timothy S. Collett, K. M. Shukla, U. S. Yadav, M. V. Lall, Krishna VishwanathByEnergy Resources Program, Central Energy Resources Science CenterOctober 1, 2019                India National Gas Hydrate Program Expedition 02 summary of scientific results: Numerical simulation of reservoir response to depressurization              The India National Gas Hydrate Program Expedition 02 (NGHP-02) discovered gas hydrate at high saturation in sand reservoirs at several sites in the deepwater Bay of Bengal.  To assess the potential response of those deposits to scientific depressurization experiments, comprehensive geologic models were constructed to enable numerical simulation for two sites.  Both sites (NGHP-02-09 and NGHP-02-16AuthorsRay Boswell, Evgeniy Myshakin, George Moridis, Yoshihiro Konno, Timothy S. Collett, Matthew Reagan, Taiwo Ajayi, Yongkoo SeolByEnergy Resources Program, Central Energy Resources Science CenterOctober 16, 2018                India National Gas Hydrate Program Expedition 02 summary of scientific results:  Evaluation of natural gas hydrate-bearing pressure cores              India’s National Gas Hydrate Program (NGHP) Expedition-02 was conducted in 2015 with the goal of investigating numerous locations that had been determined to be prospective for gas hydrate at high saturation in sand-rich reservoirs.  Initial logging while drilling data revealed extensive sand-rich gas hydrate occurrences at multiple drill sites in two broad areas. These sites were further investigAuthorsR. Boswell, J. Yoneda, William F. WaiteByWoods Hole Coastal and Marine Science CenterJuly 26, 2018                Multi-measurement approach for establishing the base of gas hydrate occurrence in the Krishna-Godavari Basin for sites cored during Expedition NGHP-02 in the offshore of India              The 2015 National Gas Hydrate Program of India's second expedition, NGHP-02, acquired logging and coring datasets for constraining the base of the gas hydrate occurrence zone (deepest GH) and the theoretical base of gas hydrate stability zone (BGHS). These data are used here for two primary goals: to constrain the deepest occurrence of gas hydrate relative to predicted stability limits and the obsAuthorsWilliam F. Waite, Carolyn D. Ruppel, Timothy S. Collett, P. Schultheiss, M. Holland, K.M. Shukla, P. KumarByWoods Hole Coastal and Marine Science CenterMay 25, 2018                Downhole physical property-based description of a gas hydrate petroleum system in NGHP-02 Area C: A channel, levee, fan complex in the Krishna-Godavari Basin offshore eastern India              India’s second National Gas Hydrate Program expedition, NGHP-02, collected logging while drilling and sediment core data in Area C offshore eastern India, to investigate controls on the distribution and peak saturations of methane gas hydrate occurrences in buried channel, levee and fan deposits.  Physical property results are presented here for the four Area C coring sites: NGHP-02-07, targetingAuthorsWilliam F. Waite, Junbong Jang, Timothy S. Collett, Ronish KumarByNatural Hazards Mission Area, Energy Resources Program, Coastal and Marine Hazards and Resources Program, Woods Hole Coastal and Marine Science Center