The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 23, 1989
Filed:
Sep. 23, 1987
Richard M Sproul, Grapevine, TX (US);
Frank Giusti, Jr, Lewisville, TX (US);
Carter R Young, Highland Village, TX (US);
John B Wilkie, Jr, Houma, LA (US);
Otis Engineering Corporation, Carrollton, TX (US);
Abstract
A packer is locked onto a service tool by separation shear pins during a run-in operation. The separation shear pins are decoupled with respect to run-in handling forces by a set of transfer support lugs. The transfer support lugs carry the weight of the packer and the hang weight of equipment supported by the packer so that no weight is applied to the shear pins during a run-in operation. The packer is set and its hang load is transferred to the separation shear pins after the packer is set by the application of hydraulic pressure against an annular piston carried on the service tool. The piston is locked during run-in by a group of transit shear pins. Movement of the annular piston shears the transit pins and unsupports a collet latch to permit retraction of the transfer support lugs and disengagement of the service tool mandrel from the packer. The service tool is then released from the packer by increasing hydraulic pressure or by pulling up on the work string, or both, and shearing the separation shear pins. Upon release, the service tool can be reciprocated freely within the packer bore for accommodating a gravel pack service operation.