Liner screen tieback packer apparatus and method

Details Liner screen tieback packer apparatus and method Liner screen tieback packer apparatus and method

1986-01-29

1987-05-05

Novosad, Stephen J.

Wells

Processes

Placing or shifting well part

166136, E21B 3312

Patent

active

046624538

ABSTRACT:
A tieback packer apparatus and method for packing a well annulus above a gravel packed liner screen. The packer includes a body with a mandrel slidingly disposed therein. Originally, the mandrel is shearably pinned to the body. The body includes a lower packer support for a packer element annularly disposed around the mandrel. An upper packer support is also shearably pinned to the mandrel and includes a wedge. A plurality of slips are positioned above the wedge. Downward motion of the mandrel shears the shear pins and transfers force through a spring, thus forcing the slips toward the wedge and outwardly into gripping engagement with the well bore. The spring keeps the slips engaged while preventing excessive slip drag. Further downward movement of the mandrel sets the packer element into sealing engagement with the well bore. The packer may be retrieved by reengaging the releasing mechanism. Lifting sequentially unsets the slips, as well as unsetting the packer element.

REFERENCES:
patent: 2976076 (1961-03-01), Farley
patent: 3232347 (1966-02-01), Thrane
patent: 3409085 (1968-11-01), Oliver
patent: 3584684 (1971-06-01), Anderson et al.
patent: 4332410 (1982-06-01), Baker
patent: 4427063 (1984-01-01), Skinner
Halliburton Services Catalog No. 41, pp. 4027 and 4028.
Halliburton Tools Manual, pp. 2-43, 2-51 and 2-52.

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