Method and apparatus for the downhole injection of superheated steam
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United States of America Patent
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May 31, 2016
Grant Date -
May 8, 2014
app pub date -
Oct 28, 2013
filing date -
Nov 2, 2012
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Superheated steam from a generator (10) proximate a well (14) is delivered through an output pipe (12) that communicates through a dual entry wellhead (17) with downhole steam piping (18) extending into the well (14). Steam is delivered at approximately 50 PSIG over the frictional and other losses encountered from the surface to the steam piping outlet (19). Oil is extracted through production tubing (20) passing through wellhead (17). Production tubing (20) and steam delivery piping (18) are secured in parallel relationship by clamps (46). The production tubing (20) communicates with a lift pump, and the steam piping (18) is terminated generally at a midpoint of the production tubing (20), several feet above the lift pump. A thermocouple (43) is placed approximately two feet below the end of the steam piping (18).
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