Extraction Techniques
Horizontal drilling is primarily used because it extracts
the methane gas present underneath the ice without
disrupting the ice seal. An additional bonus here is that
extraction of gas in this manner will reduce the buoyancy
pressure exerted on the overlying hydrate, so the seal
integrity is better preserved as more underlying gases are
produced.
Future
Technique
Teledyne Isco
Syringe Pumps can be used in experiments such as determining
phase or relative permeability of core samples by accurately
controlling
fluid volumes, flow rates, and pressures. They can be used
for fluid delivery, overburden pressure, and pressure
regulation.
The figure directly above shows two pairs of continuous flow
pumps, one pair for receiving and one for delivery. The
receive pumps are set in constant pressure mode and will
dispense to waste when filled. The switchover between pumps
is pulseless, thereby minimizing pressure fluctuations.
