Method and apparatus for wellbore fluid treatment

CAFC
  • US 9,074,451 B2
  • Filed: 01/08/2014
  • Issued: 07/07/2015
  • Est. Priority Date: 08/21/2002
  • Status: Active Grant
First Claim
Patent Images

1. An apparatus for fluid treatment of a borehole, the apparatus comprising:

  • a tubing string having a long axis and a wall defining an inner bore and an outer surface of the tubing string; and

    a plurality of sleeve closures accessible in the inner bore of the tubing string, each of the plurality of sleeve closures being actuatable by a first plug moveable through the tubing string, each of the plurality of sleeve closures being actuatable from a covering position over a port through the wall to an open position exposing the port, the covering position preventing fluid communication through the port between the inner bore and the outer surface and the open position permitting fluid communication through the port between the inner bore and the outer surface, and each of the plurality of sleeve closures in the open position allowing the first plug to pass therethrough.

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