Enhanced oil recovery (EOR) in unconventional reservoirs has been stymied by its low-permeability, low-porosity environment. Liberty Resources performed water-alternating-gas (WAG) EOR pilot tests in ...
LPG flooding traditionally has been used for tertiary recovery to mobilize stranded oil after waterflooding. In 1996, Chevron Corp. and Halliburton Co. began studying LPG as a stimulation fluid. The ...