Methane hydrate formation in partially water-saturated Ottawa sand
American Mineralogist
By: W.F. Waite, W.J. Winters, and D.H. Mason
Links
- More information: Publisher Index Page (via DOI)
- Open Access Version: External Repository
- Download citation as: RIS | Dublin Core
Abstract
Bulk properties of gas hydrate-bearing sediment strongly depend on whether hydrate forms primarily in the pore fluid, becomes a load-bearing member of the sediment matrix, or cements sediment grains. Our compressional wave speed measurements through partially water-saturated, methane hydrate-bearing Ottawa sands suggest hydrate surrounds and cements sediment grains. The three Ottawa sand packs tested in the Gas Hydrate And Sediment Test Laboratory Instrument (GHASTLI) contain 38(1)% porosity, initially with distilled water saturating 58, 31, and 16% of that pore space, respectively. From the volume of methane gas produced during hydrate dissociation, we calculated the hydrate concentration in the pore space to be 70, 37, and 20% respectively. Based on these hydrate concentrations and our measured compressional wave speeds, we used a rock physics model to differentiate between potential pore-space hydrate distributions. Model results suggest methane hydrate cements unconsolidated sediment when forming in systems containing an abundant gas phase.
Suggested Citation
Waite, W., Winters, W., Mason, D., 2004, Methane hydrate formation in partially water-saturated Ottawa sand: American Mineralogist, v. 89, no. 8-9, p. 1202-1207, https://doi.org/10.2138/am-2004-8-906.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Methane hydrate formation in partially water-saturated Ottawa sand |
| Series title | American Mineralogist |
| DOI | 10.2138/am-2004-8-906 |
| Volume | 89 |
| Issue | 8-9 |
| Publication Date | August 01, 2004 |
| Year Published | 2004 |
| Language | English |
| Publisher | Mineralogical Society of America |
| Contributing office(s) | Woods Hole Coastal and Marine Science Center |
| Description | 6 p. |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | American Mineralogist |
| First page | 1202 |
| Last page | 1207 |