Method for fracturing and gravel-packing a well

Details Method for fracturing and gravel-packing a well Method for fracturing and gravel-packing a well

E - Fixed Constructions

21

B

E21B 33/138 (2006.01) E21B 43/04 (2006.01) E21B 43/26 (2006.01) E21B 43/267 (2006.01)

Patent

CA 2210418

A method for gravel-packing an interval within a cased wellbore wherein perforations in the well casing are cleaned of any plugging materials before placement of the gravel (e.g., sand). A screen having alternate flowpaths thereon is lowered adjacent the perforated casing and a clear fluid (e.g., clear fracturing gel) is pumped through the perforations into the formation. The gel cleans the perforation of any plugging material and fractures the formation. A gravel (e.g., sand) slurry is then pumped into the annulus and through the perforations to deposit sand in the fracture, the perforations, and the annulus around the screen. If a sand bridges) forms in the annulus, the alternate flowpaths will deliver the slurry to all levels within the annulus insuring good distribution of sand across the interval.

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