METHODS AND APPARATUS FOR INCREASING AND EXTENDING OIL PRODUCTION FROM UNDERGROUND FORMATIONS NEARLY DEPLETED OF NATURAL GAS DRIVE

摘要

Methods and apparatus employing inert gases injected into the lower level of sloping underground oil-bearing formations as a driving mechanism and water injected into the upper level of the formation as a gas blocking mechanism for increasing and extending the production of oil from underground formations is described. Also described is an inert gas and oil production system comprising an exhaust gas processing system, a well inert gas and water injection system, an oil production well system comprising an exhaust gas scrubbing or cleaning system (1) and a gas separation system (100), a well inert gas and water injection system, an oil production system, and a fuel gas generator (700). A hydraulically operated crude pump is also described.