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 ...

A waterflood pressurizes the reservoir and sweeps oil toward producers by injecting treated water into designated injection wells. It is the workhorse of secondary recovery, extending plateau rates, ...

Flue gas assisted steam assisted gravity drainage (SAGD) is a frontier technology to enhance oil recovery for heavy oil reservoirs. The carbon dioxide generated from the thermal recovery of heavy oil ...