Related Oil & Gas Terms

• Primary recovery

  The first stage of oil production in which natural reservoir drives are used to recover oil, although some form of artificial lift may be required to exploit declining reservoir drives....

• Improved oil recovery or ior

  Any of various methods, chiefly reservoir drive mechanisms and enhanced recover techniques, designed to improve the flow of hydrocarbons from the reservoir to the wellbore or to recover more oil after the primary and secondary methods (water and gas floods) are uneconomic....

• Waterflooding

  1. a method of improved recovery in which water is injected into a reservoir to remove additional quantities of oil that have been left behind after primary recovery. waterflooding usually involves the injection of water through wells specially set up for water injection and the removal of water and oil from production wells drilled adjacent...

• Unitization

  A system of operating a certain oil and condensate reservoir in order to conduct some form of pressure maintenance, repressuring, waterflood, or other cooperative form to increase ultimate recovery....

• Reservoir drive mechanism

  The process in which reservoir fluids are caused to flow out of the reservoir rock and into a wellbore by natural energy. gas drives depend on the fact that, as the reservoir is produced, pressure is reduced, allowing the gas to expand and provide the driving energy. water-drive reservoirs depend on water pressure to force...