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TitleProof of concept for gas hydrate production using the depressurization technique, as established by the JOGMEC/NRCan/Aurora Mallik 2007-2008 Gas Hydrate Production Research Well Program
DownloadFree download (whole publication) (zip 3219854 KB)
AuthorDallimore, S R; Wright, J F; Yamamoto, K; Bellefleur, G
SourceScientific results from the JOGMEC/NRCan/Aurora Mallik 2007-2008 gas hydrate production research well program, Mackenzie Delta, Northwest Territories, Canada; by Dallimore, S R (ed.); Yamamoto, K (ed.); Wright, J F (ed.); Bellefleur, G (ed.); Geological Survey of Canada, Bulletin 601, 2012; p. 1-15
Year2012
PublisherNatural Resources Canada / Ressources naturelles Canada
Documentserial
Lang.eng
Mediadigital; on-line; paper
RelatedThis publication is contained in Dallimore, S R; Yamamoto, K; Wright, J F; Bellefleur, G; (2012). Scientific results from the JOGMEC/NRCan/Aurora Mallik 2007-2008 gas hydrate production research well program, Mackenzie Delta, Northwest Territories, Canada, Geological Survey of Canada, Bulletin no. 601
File formatpdf
ProvinceNorthwest Territories
NTS107C/06
AreaMackenzie Delta
Lat/Long WENS-134.5000 -134.0000 69.5000 69.2500
Subjectsfossil fuels; engineering geology; geophysics; hydrocarbons; gas; hydrocarbon gases; hydrate; methane; methane hydrate; petroleum resources; gas geochemistry; biogenic gas; geophysical surveys; gamma ray logging; gamma-ray surveys; seismic surveys; porosity; permeability; geothermics; modelling; production tests; drilling techniques; logging techniques; pressure-temperature conditions; Tertiary; Cenozoic
Illustrationslocation maps; fence diagrams; graphs; plots; tables
ProgramGas Hydrate Production, Gas Hydrates
Released2012 12 14 (13:00)
AbstractScientific and engineering studies advanced through the JOGMEC/NRCan/Aurora Mallik 2007-2008 Gas Hydrate Production Research Well Program have successfully established proof of concept that sustained gas production can be achieved by simple depressurization of a gas hydrate reservoir using conventional oil-and-gas drilling, completion, and production methods. This paper reviews the scientific findings that substantiate this claim. These include 1) establishment of a petroleum-system model for the emplacement of a gas hydrate field by migration along vertical faults of thermogenic methane sourced from deeper sedimentary strata, with subsequent trapping as gas hydrate within a regionally extensive structural anticline; 2) quantification of the detailed physical properties (geological, geophysical, geomechanical) of gas hydrate reservoir sands and enclosing sediments; 3) construction and safe operation of a production well using conventional oilfield drilling and completion technologies; and 4) 6 days of continuous gas production by reservoir depressurization, with sustained gas- and water-flow rates averaging about 2000 and 10 m3/d respectively, and peak gas-flow rates in the range of 3500-4000 m3/d . Modestly increasing trends in the gas rate were apparent throughout the stage 2 and stage 3 production periods.
Numerical reservoir simulations of the observed short-term gas- and water-production rates at Mallik have been undertaken with some success. We conclude, however, that before field-scale production can be realized there is a need for an improved understanding of the long-term production responses of the Mallik reservoir, which might reasonably be achieved through a future production test of between 6 and 12 months duration.
GEOSCAN ID292079