Well packer with internally adjustable shear release mechanism

Details Well packer with internally adjustable shear release mechanism Well packer with internally adjustable shear release mechanism

1987-06-10

1988-07-05

Dang, Hoang C.

Wells

Processes

Placing or shifting well part

166120, 166134, E21B 2304, E21B 2306, E21B 33129

Patent

active

047548142

ABSTRACT:
A well packer as shown having a shear release mechanism located internally within a packer body which allows the shear release value to be easily varied. A lock body and internal piston ring are initially static. An engagement surface on the lock body cooperates with the setting sleeve to lock setting force into the packing elements. A straight upward pull on the packer mandrel, allows the piston and lock body to become dynamic to relax the packing elements and allow the well packer to be retrieved to the well surface.

REFERENCES:
patent: 2851108 (1956-11-01), Reed
patent: 3265132 (1966-08-01), Edwards, Jr.
patent: 3283820 (1966-11-01), Tansch
patent: 4018272 (1977-04-01), Brown et al.
patent: 4049055 (1977-09-01), Brown
patent: 4216827 (1980-08-01), Crowe
patent: 4263969 (1981-04-01), Garner, Jr.
patent: 4393929 (1983-07-01), Akkerman
patent: 4565247 (1986-01-01), Tapp et al.
patent: 4573537 (1986-03-01), Hirasuna et al.

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