Detection and evaluation of the in-situ natural gas hydrates in the North Slope Region, Alaska
The purpose of this study is to develop techniques for the detection and evaluation of gas hydrates from well log data and determine possible geologic controls on the occurrence of hydrates. The high density of oil and gas drilling in Prudhoe Bay provides a broad data base with over five-hundred completed wells. Logs used include the dual induction laterolog, borehole compensated sonic, self potential, gamma ray, caliper, neutron-activation, mud and temperature log. For this study, several new methods of evaluation were developed and incorporated with existing techniques. One-hundred and twenty-five wells were examined for potential hydrate occurrence, with 102 definite occurrences in 32 different wells. The resistivity of the hydrate ranged from 50 ohm meters to 1,000 ohm meters and the sonic logs indicated acoustic velocities ranging from 3.1 km/s to 4.4 km/s. For each well examined, the geothermal gradient was determined and the theoretical stability zone for methane hydrate was calculated.
- Research Organization:
- University of Alaska
- OSTI ID:
- 5630716
- Report Number(s):
- CONF-830312-
- Journal Information:
- Soc. Pet. Eng. AIME, Pap.; (United States), Journal Name: Soc. Pet. Eng. AIME, Pap.; (United States) Vol. SPE 11673; ISSN SEAPA
- Country of Publication:
- United States
- Language:
- English
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Hydrate resource assessment of the North Slope of Alaska: Technical note
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Related Subjects
030200* -- Natural Gas-- Reserves
Geology
& Exploration
ALASKA
ALASKAN NORTH SLOPE
ALKANES
ARCTIC OCEAN
BAYS
BEAUFORT SEA
CARBONACEOUS MATERIALS
COAL
DATA ANALYSIS
DATA BASE MANAGEMENT
DETECTION
DRILLING
ENERGY SOURCES
EVALUATION
FEDERAL REGION X
FOSSIL FUELS
FUELS
GAS HYDRATES
HYDRATES
HYDROCARBONS
LITHOLOGY
MANAGEMENT
MATERIALS
METHANE
NATURAL GAS WELLS
NORTH AMERICA
ORGANIC COMPOUNDS
PRUDHOE BAY
RESOURCE POTENTIAL
SEAS
SURFACE WATERS
TECHNOLOGY ASSESSMENT
USA
WELL DRILLING
WELL LOGGING
WELLS