Timothy S Collett
Dr. Collett provides science leadership and management oversight within the Energy Resources Program (ERP) funded tasks in the USGS Gas Hydrate Project, which include the (1) North Slope of Alaska Gas Hydrate Energy Production Research Task, (2) Gas Hydrate Energy Assessment Task, (3) International Gas Hydrate Research and Science Advisor Task, and the (4) Gulf of Mexico Gas Hydrate Task.
Biography
Dr. Collett has been a research geologist in the U.S. Geological Survey (USGS) since 1983. Tim received a B.S. in geology from Michigan State University, a M.S. in geology from the University of Alaska, and a Ph.D. in geology from the Colorado School of Mines. Tim is the Project Chief of the Energy Resources Program funded gas hydrate research efforts in the USGS. He has received the Department of the Interior Meritorious Service Award and the Golomb-Chilinger Medal from the Russian Academy of Natural Sciences and the Natural Resources of Canada Public Service Award. Tim has been the Chief and Co-Chief Scientist of numerous domestic and international gas hydrate scientific and industrial drilling expeditions and programs. He has been the Co-Chief Scientists and Operational Manager for the India NGHP Expedition 01 and 02 gas hydrate drilling and testing projects. Tim was a Co-Chief Scientist of the international cooperative gas hydrate research project that was responsible for drilling dedicated gas hydrate production research wells in the Mackenzie Delta of Canada under the Mallik 1998 and 2002 efforts. Tim was the logging scientist on the Gulf of Mexico JIP Gas Hydrate Research Expedition in 2005 and is the Co-Chief Scientist of the Integrated Ocean Drilling Program (IODP) Expedition 311, and the Gulf of Mexico JIP Leg II drilling project in 2009. He sailed as a science advisor on the Korean UBGH2 Expedition in 2010 and the 2017 University of Texas Gulf of Mexico 2-1 Hydrate Pressure Coring Expedition. Tim was also the Principal Investigator responsible for organizing and conducting the 1995 and 2008 USGS National Oil and Gas Assessment of natural gas hydrates. Tim is an Adjunct Professor in the Department of Geophysics at the Colorado School of Mines. Tim’s current research efforts in the USGS deal mostly with domestic and international gas hydrate energy resource characterization studies. His ongoing gas hydrate assessment activities in Alaska are focused on assessing the energy resource potential of gas hydrates on the North Slope and supporting the domestic marine gas hydrate assessments being led by the U.S. Bureau of Ocean Energy Management. Tim’s international gas hydrate activities include cooperative projects with research partners in India, Korea, Japan, China, Taiwan, and Canada. Tim also continues to represent the USGS gas hydrate interest in the Gulf of Mexico through a U.S. Department of Energy cooperative. Tim has published more than 250 research papers along with 10 books and treatises on gas hydrates and other unconventional resources.
Science and Products
Results of the India National Gas Hydrate Program Expedition 02
The Government of India, with the support of the U.S. Geological Survey (USGS), has released the initial results of the most comprehensive gas hydrate scientific drilling investigation ever undertaken. Coinciding with the release of the Journal of Marine and Petroleum Geology Special Issue on Marine Gas Hydrate Reservoir Systems Along the Eastern Continental Margin of India: Results of...
Assessment of Gas Hydrate Resources in the North Slope of Alaska, 2018
The U.S. Geological Survey (USGS) has updated the previous 2008 assessment of undiscovered, technically recoverable gas hydrate resources beneath the North Slope of Alaska. This new 2018 assessment again indicates the existence of technically recoverable gas hydrate resources―that is, resources that can be discovered, developed, and produced using current technology. Using a geology-based...
Alaska North Slope 2018 Hydrate 01 Stratigraphic Test Well
The National Energy Technology Laboratory (NETL), 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 northern Alaska.
Gas Hydrates
Central Energy Resources Science Center - Gas Hydrates Project Page
U.S. Geological Survey Gas Hydrates Project
The USGS Gas Hydrates Project focuses on the study of natural gas hydrates in deepwater marine systems and permafrost areas. The primary goals are:
- Evaluate methane hydrates as a potential energy source
- Investigate the interaction between methane hydrate destabilization and climate change at short and long time scales, particularly in the Arctic
- Study the spatial ...
Gas Hydrates - Primer
What is Gas Hydrate?
Gas hydrate is an ice-like crystalline form of water and low molecular weight gas (e.g., methane, ethane, carbon dioxide). On Earth, gas hydrates occur naturally in some marine sediments and within and beneath permafrost. Gas hydrates have also been inferred on other planets or their moons.
At the molecular level, gas hydrate...
Marine Methane Hydrate Field Research Plan
In 2013, the U.S. Department of Energy’s (DOE) National Energy Technology Laboratory (NETL), in partnership with the Consortium for Ocean Leadership (COL), initiated a new field-focused methane hydrate research planning effort that would inform, and potentially lead to, future off shore drilling field expeditions. The primary objective of this project was to conduct planning that would help...
Successful Test of Gas Hydrate Production Test Well Ignik Sikumi on Alaska's North Slope
On May 2, 2012 the U.S. Department of Energy (DOE) announced the completion of the field testing phase of the Ignik Sikumi gas hydrate production test well project on the North Slope of Alaska. The USGS participated in many phases of this work, including originally identifying the test site, which was based on almost 30 years of USGS geologic studies on gas hydrates in northern Alaska.
Mount Elbert Gas Hydrate Stratigraphic Test Well
Field Report
Korean National Gas Hydrate Program, Second Ulleung Basin Gas Hydrate Drilling Expedition
As a part of Korean National Gas Hydrate Program, the Second Ulleung Basin Gas Hydrate Drilling Expedition (UBGH2) was successfully performed by using the D/V Fugro Synergy to establish 13 research drill sites in the period of time from July 8 to September 30, 2010. The first leg of this expedition focused on logging-while-drilling operations, while the second leg focused on both conventional...
The Mallik Research Consortium
The Mallik Research Consortium drilled three test wells in Canada’s Mackenzie Delta, and the results of this international cooperative effort, demonstrating the producibility of this energy resource, were published in 2005. Results Publication: GSC Bulletin 585.
AAPG Memoir 89: Natural Gas Hydrates
USGS Contribution to AAPG Memoir on Gas Hydrates: In the December of 2009, the American Association of Petroleum Geologists (AAPG) published a comprehensive treatise on the geology of gas hydrates which is entitled Natural Gas Hydrates – Energy Resource Potential and Associated Hazards.
USGS National and Global Oil and Gas Assessment Project-Northern Alaska Province, Gas Hydrate Assessment Unit Boundaries and Assessment Input Data Forms
This data release contains the boundaries of assessment units and input data for the assessment of undiscovered gas hydrate resources on the north slope of Alaska. The Assessment Unit is the fundamental unit used in the National Assessment Project for the assessment of undiscovered oil and gas resources. The Assessment Unit is defined within the context of the higher-level Total Petroleum...
Permeability anisotropy and relative permeability in sediments from the National Gas Hydrate Program Expedition 02, offshore India
Gas and water permeability through hydrate-bearing sediments essentially governs the economic feasibility of gas production from gas hydrate deposits. Characterizing a reservoir’s permeability can be difficult because even collocated permeability measurements can vary by 4-5 orders of magnitude, due partly to differences between how various...
Dai, Sheng; Kim, J.; Xu, Yue; Waite, William F.; Jang, Junbong; Yoneda, J.; Collett, Timothy S.; Kumar, Pushpendra Physical property characteristics of gas hydrate-bearing reservoir and associated seal sediments collected during NGHP-02 in the Krishna-Godavari Basin, in the offshore of India
India’s National Gas Hydrate Program Expedition 02 (NGHP-02), was conducted to better understand geologic controls on gas hydrate occurrence and morphology, targeting potentially coarse-grained sediments near the base of the continental slope offshore eastern India. This study combines seismic, logging-while-drilling data, and a petroleum systems...
Jang, Junbong; Waite, William F.; Stern, Laura A.; Collett, Timothy S.; Kumar, Pushpendra Compressibility and particle crushing of Krishna-Godavari Basin sediments from offshore India: Implications for gas production from deep-water gas hydrate deposits
Depressurizing a gas hydrate reservoir to extract methane induces high effective stresses that act to compress the reservoir. Predicting whether a gas hydrate reservoir is viable as an energy resource requires enhanced understanding of the reservoir’s compressibility and susceptibility to particle crushing in response to elevated effective stress...
Kim, J.; Dai, Sheng; Jang, Junbong; Waite, William F.; Collett, Timothy S.; Kumar, Pushpendra 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...
Collett, Timothy S.; Pushpendra Kumar; Ray Boswell; Waite, William Formation pressure and fluid flow measurements in marine gas hydrate reservoirs, NGHP-02 expedition, offshore India
Open Hole Modular Dynamic Testing (MDT) measurements were conducted in a gas hydrate-bearing sand-rich reservoir offshore India during the National Gas Hydrate Program 02 (NGHP-02) Expedition. The primary goal of this test was to obtain effective reservoir petrophysical properties in the presence of gas hydrates. The test plan included a series of...
Kumar, Pushpendra; Collett, Timothy S.; Yadav, U.S.; Singh, Juli 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...
Pushpendra Kumar; Collett, Timothy S.; K. M. Shukla; U. S. Yadav; M. V. Lall; Krishna Vishwanath 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...
Collett, Timothy S.; Ray Boswell; Waite, William F.; Pushpendra Kumar; Sandip Kumar Roy; Krishan Chopra; Sunil Kumar Singh; Yasuhiro Yamada; Tenma, Norio; Pohlman, John; Zyrianova, Margarita National Gas Hydrate Program expedition 02: Identification of gas hydrate prospects in the Krishna-Godavari Basin, offshore India
After completing the first expedition of India's National Gas Hydrate Program (NGHP-01) in 2006, it was concluded that for the next expedition (National Gas Hydrate Program 02; NGHP-02), a new drill site review effort should focus on identifying potential deep-water offshore gas hydrate accumulations in sand dominated depositional environments....
K.M. Shukla; U.S. Yadav; Pushpendra Kumar; Collett, Timothy; R. Boswell and K. Rose; M. Frye; M. Riedel; I. Kaurf; K. Vishwanathf Numerical simulations of depressurization-induced gas production from an interbedded turbidite gas hydrate-bearing sedimentary section in the offshore India: Site NGHP-02-16 (Area-B)
The recent National Gas Hydrate Program Expedition 02 (NGHP-02) identified the existence of gas hydrate-bearing sand reservoirs at a number of sites in the offshore of India including Site NGHP-02-16 in Area-B of the Krishna-Godavari Basin. The architecture of that gas hydrate accumulation is characterized by thin, gas hydrate-bearing, high...
Myshakin, Evgeniy M.; Seol, Yongkoo; Lin, Jeen-Shang; Uchida, Shun; Collett, Timothy; Boswell, Ray 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...
Boswell, Ray; Myshakin, Evgeniy; Moridis, George; Konno, Yoshihiro; Collett, Timothy S.; Matthew Reagan; Ajayi, Taiwo; Seol, Yongkoo
Assessment of undiscovered gas hydrate resources in the North Slope of Alaska, 2018
Using a geology-based assessment methodology, the U.S. Geological Survey estimated undiscovered, technically recoverable mean resources of about 54 trillion cubic feet of gas resources within gas hydrates in the North Slope of Alaska.
Collett, Timothy S.; Lewis, Kristen A.; Zyrianova, Margarita V.; Haines, Seth S.; Schenk, Christopher J.; Mercier, Tracey J.; Brownfield, Michael E.; Gaswirth, Stephanie B.; Marra, Kristen R.; Leathers-Miller, Heidi M.; Pitman, Janet K.; Tennyson, Marilyn E.; Woodall, Cheryl A.; Houseknecht, David W. Mechanisms of methane hydrate formation in geological systems
Natural gas hydrates are ice-like mixtures of gas (mostly methane) and water that are widely found in sediments along the world’s continental margins and within and beneath permafrost in a near-surface depth interval where the pressure is sufficiently high and temperature sufficiently low for gas hydrate to be stable. Beneath this interval, gas...
Kehua You; Peter B. Flemings; Alberto Malinverno; Collett, Timothy; Kristopher Darnell
USGS Estimates 53.8 Trillion Cubic Feet of Natural Gas Hydrate Resources in the Alaska North Slope
Access to 3D seismic mapping, along with a greater understanding of gas hydrate reservoir properties, yields estimates that are more precise.
Test Well Confirms Two Gas Hydrate Reservoirs in Alaska North Slope
In the far north of Alaska, near the giant Prudhoe Bay oil field, an international research consortium has been studying the potential of an altogether different energy source. In late December of 2018, drilling operations confirmed the existence of two high-quality reservoirs that were fully saturated with a potential alternative fuel source: gas hydrate.