Method of wellbore pumping apparatus with improved...

Details Method of wellbore pumping apparatus with improved... Method of wellbore pumping apparatus with improved...

2008-01-01

2008-01-01

Mai, Lanna (Department: 3637)

Wells

Processes

Producing the well

C166S272300, C166S272700

Reexamination Certificate

active

10648815

ABSTRACT:
Oil is recovered from a borehole using a pump having limited high temperature breakdown resistance. The pump is located in a borehole having a cooling zone, in which the temperature of the well fluid is reduced to, or below, the temperature at which the temperature breakdown resistance of the pump is commercially acceptable. In one embodiment, the pump is a positive displacement pump which is mechanically driven from the well head location, such as through a rotating rod. The cooling zone is provided by positioning and controlling the pump to maintain a sufficiently low pressure at the pump intake to cause a portion of the liquid well fluid to vaporize prior to entry of the liquid into the pump, creating bubbles which pass upwardly in the wellbore in a zone passing the pump. The evolution of the vapor cools the well fluid to the acceptable temperature.

REFERENCES:
patent: 3485300 (1969-12-01), Engle
patent: 4344485 (1982-08-01), Butler
patent: 4524827 (1985-06-01), Bridges et al.
patent: 5549160 (1996-08-01), Bownes et al.
patent: 5607016 (1997-03-01), Butler
patent: 5996691 (1999-12-01), Norris et al.
patent: 6039121 (2000-03-01), Kisman
patent: 6079491 (2000-06-01), Stuebinger et al.
patent: 6412557 (2002-07-01), Ayasse et al.
patent: 6533033 (2003-03-01), Skillman
patent: 2003/0159828 (2003-08-01), Howard et al.

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