Packer releasing methods

Details Packer releasing methods Packer releasing methods

2005-03-01

2005-03-01

Tsay, Frank (Department: 3672)

Wells

Packers or plugs

With expanding anchor

C166S138000

Reexamination Certificate

active

06860326

ABSTRACT:
Methods of releasing a well tool set in a wellbore are provided. In various embodiments, a well tool, such as a packer, is released from sealing and gripping engagement within a wellbore using alternate methods. A dual-string packer is described in which the packer may be released by severing a mandrel of the packer, displacing a piston of the packer, or by displacing a retaining device in a flow passage of the packer.

REFERENCES:
patent: 4271903 (1981-06-01), Slagle et al.
patent: 4467867 (1984-08-01), Baker
patent: 4505332 (1985-03-01), Mills et al.
patent: 4754812 (1988-07-01), Gentry
patent: 4930573 (1990-06-01), Lane et al.
patent: 6609567 (2003-08-01), Ingram et al.
Halliburton, “PES PR3 Tubing Punch Release Tool”, dated Jan. 15,2002.
Halliburton, “PES HP1 Retrievable Packer”, dated Oct., 2001.

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