| Title | Proof 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 |
| Download | Download (whole publication) |
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| Licence | Please note the adoption of the Open Government Licence - Canada
supersedes any previous licences. |
| Author | Dallimore, S R ;
Wright, J F; Yamamoto, K; Bellefleur, G |
| Source | Scientific 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, https://doi.org/10.4095/292079  Open Access |
| Year | 2012 |
| Publisher | Natural Resources Canada |
| Document | serial |
| Lang. | English |
| Media | paper; on-line; digital |
| Related | This publication is contained in Scientific results from the
JOGMEC/NRCan/Aurora Mallik 2007-2008 gas hydrate production research well program, Mackenzie Delta, Northwest Territories, Canada |
| File format | pdf |
| Province | Northwest Territories |
| NTS | 107C/06 |
| Area | Mackenzie Delta |
| Lat/Long WENS | -134.5000 -134.0000 69.5000 69.2500 |
| Subjects | fossil 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 |
| Illustrations | location maps; fence diagrams; graphs; plots; tables |
| Program | Gas Hydrates |
| Released | 2012 12 14 (13:00) |
| Abstract | Scientific 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 ID | 292079 |
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