Method for extracting a petroleum hydrocarbon and/or a nonaqueous phase liquid (NAPL) from a subsurface and composition therefore

摘要

The invention relates to a method for extracting a petroleum hydrocarbon and/or a nonaqueous phase liquid (NAPL) from a subsurface, comprising: introducing into the subsurface a surfactant and/or cosolvent to increase solubility and/or mobility of the petroleum hydrocarbon and/or NAPL and solubilize and/or desorb the petroleum hydrocarbon and/or NAPL; introducing into the subsurface a gas phase generating oxidant; allowing the gas phase generating oxidant to decompose to form a gas phase; allowing the gas phase to hydrodynamically scrub the petroleum hydrocarbon and/or NAPL from soil particles in the subsurface; inducing the petroleum hydrocarbon and/or NAPL to flow to an extraction well; extracting the NAPL from the subsurface through the extraction well. The invention also relates to a composition of an injection fluid capable of being injected into a subsurface to induce a petroleum hydrocarbon and/or a nonaqueous phase liquid (NAPL) to flow to an extraction well for extraction.