Oil recovery by in-situ combustion

Oil recovery by quenched in situ combustion

Oil recovery method

Oil recovery process in subterranean formations

Oil recovery process utilizing air and superheated steam

Oil recovery process utilizing air and superheated steam

Oil shale retorting and off-gas purification

Oil shale retorting and retort water purification process

Oil shale retorting from a high porosity cavern

Oil well perforators and method of use

Oilfield enhanced in situ combustion process

Oilfield enhanced in situ combustion process

Oilfield in situ hydrocarbon upgrading process

Operation of in situ oil shale retort with void at the top

Overburn process for recovery of heavy bitumens

Oxidizing hydrocarbons, hydrogen, and carbon monoxide