06622794 is referenced by 177 patents and cites 5 patents.

Apparatus and methods are disclosed for actively controlling the flow of hydrocarbon fluids from a producing formation at the downhole sand screen. A preferred embodiment of the invention provides a fluid flow annulus within the production tube inside of the screen. In a first flow control configuration, fluid passing through the screen is required to flow along the annulus to find a flow aperture into an interior flow bore. A static flow control device within the annulus between the sand screen and a first flow aperture dissipates flow energy by forcing the flow through a restricted area that helically winds about the flow annulus. Dissipation of the flow energy increases the pressure reduction from the screen into the production bore and reduces the flow velocity. In a second flow control configuration, flow control structure within the flow annulus obstructs all flow along the annulus. A third flow control configuration removes all flow restrictions within the flow annulus.

Sand screen with active flow control and associated method of use
Application Number
Publication Number
6622794 (B2)
Application Date
January 22, 2002
Publication Date
September 23, 2003
Edward J Zisk Jr
Round Rock
Madan Mossman & Sriram P C
Baker Hughes Incorporated
E21B 34/06
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