ExxonMobil Upstream Research Co. has awarded Schlumberger an international license for ExxonMobil’s patented Internal Shunt Alternate Path (ISAPT) sand screens to improve gravel packing of cased and openhole completion wells, according to a news release.
The technology provides internal alternate flow paths, called shunt tubes, in the downhole tool to gravel pack the producing sections of a well, ExxonMobil said in the release. The shunt tubes enable the ISAPT gravel packing operation to proceed even if sand prematurely blocks the well annulus, which would force a conventional packing operation to shut down.
The company added that the ISAPT shunt tubes divert gravel slurry around sand blockages to fill voids in the annulus until a complete pack is in place. The unique design of the ISAPT screen technology allows gravel packing lengths exceeding 5,000 feet, the release said.
The company also said in a separate news release that it awarded Weatherford U.S. an international license for ExxonMobil’s ISAPT packer for openhole completions.
ISAPT packers are specially designed to be used with ISAPT screens, enabling the isolation of multiple water-bearing zones from the production well during openhole gravel packing operations in sand-prone reservoirs, ExxonMobil said.
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