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. 24, 2022
Filed:
Jan. 13, 2020
Emkade Distribution Inc., Edmonton, CA;
Chad M. Dannish, Edmonton, CA;
Emkade Distribution Inc., Edmonton, CA;
Abstract
A cylindrical protection sleeve is insertable into the bore of a tubing hanger in a wellhead, and has a skirt that projects into the bore of the tubing hanger to cover the lift thread formed in the upper region of the hanger bore, thus shielding the lift thread from contact by frac fluid and proppant particles flowing through the hanger bore and preventing resultant damage to the lift thread. Optionally, an annular deflection lip may be provided within the bore of the protection sleeve's skirt to deflect the downward flow of proppant particles toward the center of the flow path through the hanger, and thus minimizing contact of proppant particles with the back-pressure valve (BPV) thread profile formed in the hanger bore below the lift thread, and preventing or reducing resultant damage to the BPV thread profile.