Natural gas hydrates in the Alaskan Arctic

Journal Article · Tue Mar 01 04:00:00 EST 1988 · SPE (Society of Petroleum Engineers) Format. Eval.; (United States)

DOI:https://doi.org/10.2118/13593-PA· OSTI ID:7244189

Godbole, S P; Kamath, V A; Ehlig-Economides, C

The occurrence of in-situ natural gas hydrates in the arctic North Slope of Alaska is governed by several thermodynamic and geologic parameters, such as mean annual surface temperature, geothermal gradients above and below the base of the permafrost, pore-fluid salinity, permafrost base depth and temperature, subsurface pressure, and composition. Accurate knowledge of these parameters is necessary to determine the depths and thicknesses of zones of potential hydrate occurences. The role of the parameters is discussed in this paper. To determine the hydrate-stability zone, a nomogram has been developed and has been used for several Alaskan wells. For further delineation of gas hydrates, the neutron-transit-time crossplots have served as a valuable tool. To quantify gas hydrate deposits in terms of thickness, porosity, and saturation; use of neutron- and sonic-porosity-correction factors and Pickett crossplots is recommended.

• Research Organization: Univ. of Alaska (US)
• OSTI ID: 7244189
• Journal Information: SPE (Society of Petroleum Engineers) Format. Eval.; (United States), Journal Name: SPE (Society of Petroleum Engineers) Format. Eval.; (United States) Vol. 3:1; ISSN SFEVE
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200 -- Petroleum-- Reserves
Geology
& Exploration
03 NATURAL GAS
030200* -- Natural Gas-- Reserves
Geology
& Exploration
ALASKA
EXPLORATION
EXPLORATORY WELLS
FEDERAL REGION X
FLUIDS
GAS HYDRATES
GEOLOGIC DEPOSITS
GEOLOGY
GEOPHYSICS
HYDRATES
NATURAL GAS HYDRATE DEPOSITS
NEUTRON LOGGING
NORTH AMERICA
PERMAFROST
RADIOACTIVITY LOGGING
RESERVOIR FLUIDS
RESERVOIR PRESSURE
SALINITY
THERMODYNAMICS
USA
WELL LOGGING
WELLS