Open hole zonal isolation and control

Details Open hole zonal isolation and control Open hole zonal isolation and control

E - Fixed Constructions

21

B

E21B 43/16 (2006.01) E21B 33/124 (2006.01) E21B 43/04 (2006.01) E21B 43/14 (2006.01)

Patent

CA 2288381

A system for enhancing hydrocarbon production in long and deviated subterranean wells, comprises proppant in the annulus between the screen liner and the borehole, annular isolation elements, and selective flow control in combination. The significant control provided by the system enables the well operator to impose sequential control or commingled production from multiple producing intervals of the borehole. A differential valve is incorporated in the screen liner service string to allow for proppant placement across multiple screen-liner sections, separated by annular isolation elements in a single placement operation, thereby significantly reducing time and complexity of such operations.

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