FROZEN HEAT | Volume 2
WR313“Orange” Sand WR313“Orange” Sand
Compressional Velocity (ft/s) Compressional Velocity (ft/s)
Calculated Gas Hydrate Saturation Calculated Gas Hydrate Saturation
Gamma Ray (API) Gamma Ray (API)
Resistivity (ohm*m) Resistivity (ohm*m)
Porosity (ft3/ft3) Porosity (ft3/ft3)
2610
2610
Density Neutron Density Neutron
MP3 S.Vision MP3 S.Vision
n=1.5 n=2.5
n=1.5 n=2.5
2620
2620
Clay-rich, Low-permeability Top Seal Clay-rich, Lo -per ea ility l
2630
2630
2640
2640
2650
2650
2660
2660
Gas-hydrate-bearing sands with minor interbedded muds Gas-hydrate-bearing sa s with minor interbedded mu s
Depth(fbsf)
Depth(fbsf)
2670
2670
2680
2680
2690
2690
2700
2700
2710
0
2710
50 100
0.8 0.6 0.4 0.2 0.8 0.6 0.4 0.2
5000 5000
10000 10000
0 0.5 1 0 0.5 1
10 -1 10 0 10 1 10 2 10 -1 10 0 10 1 10 2
0
50 100
Figure 2.9: Well data from a gas hydrate exploration well drilled in the northern Gulf of Mexico in 2009. These data obtained from the Walker Ridge 313 “H” well show two sand-rich reservoirs enclosed in clay-rich sediments that are fully saturated with gas hydrate (right panel). (From Boswell et al. , 2012).
A GLOBAL OUTLOOK ON METHANE GAS HYDRATES 47
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