Geological evolution and analysis of confirmed or suspected gas hydrate localities
We investigated the relationship of geological environments on gas hydrate formation and stability by basin analysis of gas hydrate sites. Basin analyses were performed on 21 offshore locations with direct or indirect evidence of gas hydrates. Extensive geological investigations were conducted for each study region comprising one or more gas hydrate locations. Sediment composition, provenance, and depositional history were documented for each study region. Structural development of the sedimentary basin was determined using drilling results and seismic reflection profiles. Potential for generation of biogenic methane and conventional thermogenic hydrocarbons was assessed by analysis of existing geochemical data and by thermal modeling. All available seismic data, both published and unpublished, were examined for evidence of gas hydrates. Bottom simulating reflectors (BSRs) and other seismic anomalies were mapped. Drilling evidence of possible gas hydrates was reviewed. Based on the limited available information, conditional assessments of gas resources were derived. Quantities of gas contained both in the gas hydrate and possibly trapped beneath the gas hydrate stability zone were estimated. 93 refs., 37 figs., 2 tabs.
- Research Organization:
- Geoexplorers International, Inc., Denver, CO (USA)
- Sponsoring Organization:
- DOE/FE
- DOE Contract Number:
- AC21-84MC21181
- OSTI ID:
- 7053202
- Report Number(s):
- DOE/MC/21181-1950-Vol.15; ON: DE90000452
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
GAS HYDRATES
EVALUATION
STABILITY
HYDROCARBONS
RESOURCE POTENTIAL
METHANE
SOLUBILITY
SEDIMENTARY BASINS
GEOLOGY
AUSTRALIA
BERING SEA
BLACK SEA
CANADA
EXPLORATION
GULF OF MEXICO
JAPAN
NATURAL GAS HYDRATE DEPOSITS
NORTH AMERICA
OFFSHORE SITES
PROGRESS REPORT
SEDIMENTS
SEISMIC WAVES
SOUTH AMERICA
USA
ALKANES
ASIA
ATLANTIC OCEAN
AUSTRALASIA
CARIBBEAN SEA
DOCUMENT TYPES
GEOLOGIC DEPOSITS
GEOLOGIC STRUCTURES
HYDRATES
LATIN AMERICA
ORGANIC COMPOUNDS
PACIFIC OCEAN
SEAS
SURFACE WATERS
030200* - Natural Gas- Reserves
Geology
& Exploration