MH Alliance Group
Pioneering the Shift to Sustainable Energy Solutions™️
History of Well Stimulation Methods
In the energy industry, three well-stimulation techniques have been previously employed: pressure reduction, temperature increase, and chemical use. However, each of these methods has inherent shortcomings.
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Image 2. Pressure Reduction.
01
Pressure Reduction
Reduce reservoir pressure below the hydrate equilibrium pressure (approximately 600 psig) as attempted in recent field tests done by JOGMEC in Japan.
Issue:
JOGMEC has abandoned this approach because the pressure drop required to cause dissociation is far below the pressure of a typical gas reservoir, and the fluid production resulted in difficulties with hydraulics and system operations.
02
Temperature Increase
Increase reservoir temperature above hydrate equilibrium temperature.
Issue:
High risk, as it could result in uncontrolled release of methane to the environment.
Image 3. Temperature Increase
Image 4. Inject chemicals into the gas-hydrate layer to cause dissociation of the hydrate
03
Chemicals
Inject chemicals into the gas-hydrate layer to cause dissociation of the hydrate. This method, using CO2 substitution, was demonstrated in a field test in Alaska.
Issue:
Impractical for commercial production due to logistics and the requirement of large quantities of chemicals for substitution.