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:
Dec. 27, 2016
Filed:
Mar. 25, 2014
Baker Hughes Incorporated, Houston, TX (US);
Gabriel A. Slup, Spring, TX (US);
Baker Hughes Incorporated, Houston, TX (US);
Abstract
The extrusion barrier for a sealing element for a packer or bridge plug is energized when set to store a retractive force that can be deployed when the packer or plug is released. The structure is a coiled spring that has gaps in the run in position and has a relaxed diameter smaller than the borehole or surrounding tubular dimension. When the packer is set a cone acts in conjunction with the spring to compress the coils together into contact while increasing the diameter to bridge an annular gap to act as an extrusion barrier. In the set position there is a restorative potential energy force that when the spring is allowed to relax retracts the shape back to the run in shape for removal of the packer or plug. Some of the trailing end coils are of a smaller diameter so that the structure can be clamped there for forcible axial movements in opposed directions.