Wells – Packers or plugs – With controllable passage between central chamber and space...
Reexamination Certificate
2005-07-19
2005-07-19
Tsay, Frank (Department: 3672)
Wells
Packers or plugs
With controllable passage between central chamber and space...
C166S373000, C166S194000
Reexamination Certificate
active
06918440
ABSTRACT:
One embodiment of the present disclosure describes a test assembly including an inflatable packer. An internal control sleeve controls flow of drilling fluid through an inflation port to inflate and deflate the packer. A shifting tool run on a slick line moves the sleeve. The packer has one end attached to an external sliding sleeve which moves upon packer inflation to expose a formation fluid port through which formation testing is performed. After testing and packer deflation, a circulation port may be opened to recover produced fluids up the drill string. A second sleeve controls flow through the circulation port and is controlled by a second shifting tool run on slick line. Other embodiments include a circulation assembly with a sliding sleeve opened and closed by one shifting tool to control circulation and the sliding sleeve itself and its operation.
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European Search Report (04251818.3-2315), Jul. 6, 2004, 3 pages.
Carlson Timothy R.
Garcia-Soule Virgilio
Gazda Imre I.
MacPhail Chuck
Halliburton Energy Service,s Inc.
Piper Michael W.
Tsay Frank
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