ExxonMobil Upstream Research licenses well completion technology

Offshore staff

HOUSTON ExxonMobil Upstream Research has made two moves to further develop its Internal Shunt Alternate Path (ISAPT) well completion technology.

“Advances in controllable open-hole completions continue to be a focus area for ExxonMobil, as many deepwater developments utilize open-hole completions to maximize reservoir deliverability,” said Sara N. Ortwein, president of ExxonMobil Upstream Research Co.

“ExxonMobil continues to pioneer completion technologies that increase control and reliability in the open-hole environment, without increasing operational complexity. ISAPT sand control screens and ISAPT packers provide the additional flexibility required to develop challenging reservoirs.”

ExxonMobil has awarded Schlumberger a license for the ISAPT sand screen and has awarded Weatherford a license for the ISAPT packer for open-hole completions.

ExxonMobil said the ISAPT screens increase well reliability in sand-prone reservoirs. The system provides internal alternate flow paths called “shunt tubes” in the downhole tool to effectively gravel pack producing horizons. The shunt tubes enable gravel packing even if sand prematurely blocks the well annulus.

The open-hole packer for the ISAPT system can extend gravel packing capabilities to more than 5,000 ft (1,524 m) while reducing installation time, ExxonMobil said. The packers are designed for use with ISAPT screen to isolate multiple water-bearing zones in a production well during gravel packing of sand-prone reservoirs.


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