System for improving oil well production

Details System for improving oil well production System for improving oil well production

1975-11-19

1977-05-24

Freeh, William L.

Pumps

Processes

Of pumping one fluid by contact or entrainment with another

417172, 417189, F04F 514

Patent

active

040252353

ABSTRACT:
A system utilizing intermittent build-up and bleeding of gas pressure in the annulus between the casing and tubing in an oil well with an inert gas interface between the gas and the producing fluid. The well is equipped with a down hole packer, inlet aperture above the packer through the tubing, and check valves above and below the packer and aperture. The system is sequentially operated by successively injecting the gas into the annulus forcing oil fluids through the aperture and up the tubing, and then bleeding the gas pressure, allowing the fluid to pass back into the annulus to the extent of the bottom hole pressure, while maintaining the necessary pressure on the formation. The cross section of the tubing is substantially smaller than the cross section of the annulus volume, thus a multiplying occurs in lifting the fluid in the tubing.

REFERENCES:
patent: 3524713 (1970-08-01), Osmon
patent: 3653717 (1972-04-01), Rich et al.
patent: 3718407 (1973-02-01), Newbrough
patent: 3797968 (1974-03-01), Elfarr

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