06039121 is referenced by 175 patents and cites 6 patents.

extending into a hot subterranean hydrocarbon-bearing formation containing water at greater than 100.degree. C. The wellbore is divided into three co-extensive passageways; an annulus, and first and second conduits. The annulus is formed within the wellbore between a block at its bottom above the completion intervals and an outlet at the wellhead. The first conduit extends from the formation, through the bottom of the annulus and to an outlet at an elevation intermediate up the annulus. The first conduit is insulated between the bottom of the annulus and its outlet. A second conduit extends between the bottom of the annulus and an outlet at the wellhead. In operation, by producing fluid from the annulus and the second conduit outlets at the wellhead, formation fluid is induced to rise up the first conduit. While the fluid rises, contained water flashes providing steam-enhanced lift. The now-cooled fluid flows out of the first conduit's outlet and into the annulus, separating into substantially gas-phase and liquid phase fluids which flow up and down the annulus respectively. The gas phase fluid is produced from the top of the annulus. Liquid-phase fluid pools in the bottom of the annulus may be artificially lifted through the second conduit using gas-lift or pumps for production at the wellhead outlet.

Title
Enhanced lift method and apparatus for the production of hydrocarbons
Application Number
8/919534
Publication Number
6039121
Application Date
August 28, 1997
Publication Date
March 21, 2000
Inventor
Kenneth Edwin Kisman
Calgary
CA
Agent
Sheridan Ross P C
Assignee
Rangewest Technologies
CA
IPC
E21B 43/24
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