Methane Hydrate Production From Alaskan Permafrost Progress Report Page: 82 of 225
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Shift = .794
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Figure 53B. After a shift, resaturated (green triangles) and thawed curves are identical
The complete set of plots of thawed and resaturated decay curves are presented in
Appendix C. Figure 54 plots shift value as a function of sample depth. Most significant shifts
occur at shallower depths.Figure 54. Identical curves have a shift of 1. Shifts between 0.75 and 1.25 are insignificant.
Shifts less than 1 represent thawed samples that relax faster than resaturated samples.DE-FC26-01 NT41331
Core and Fluid Analysis- 76 -
Maurer Technology Inc.
Anadarko Petroleum Corp.Shift Function (Tthawed/Tre-saturated)
2.25
2
1.75
1.5
1.25
0.75
0.5
0.25
0
0 200 400 600 800 1000 1200 1400
Depth (ft)
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Sigal, Richard; Newsham, Kent; Williams, Thomas; Freifeld, Barry; Kneafsey, Timothy; Sondergeld, Carl et al. Methane Hydrate Production From Alaskan Permafrost Progress Report, report, February 1, 2005; United States. (https://digital.library.unt.edu/ark:/67531/metadc786910/m1/82/: accessed April 25, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; crediting UNT Libraries Government Documents Department.