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:
Jul. 11, 1989
Filed:
Apr. 07, 1988
John R Setterberg, Jr, Dallas, TX (US);
Robert D Harrison, Jr, Bakersfield, CA (US);
Otis Engineering Corporation, Dallas, TX (US);
Abstract
A well tubing extension joint including a trash barrier. A top sub having an internal locking recess is connected on the upper end of a well packer mandrel. A trash barrier is connected on the lower end of an upper tubing string for releaseably engaging the top sub to permit the upper tubing string to move longitudinally relative to the packer and packer top sub. The trash barrier includes a body having locking collet fingers for releaseably locking the body in the top sub at the locking recess. The body has external rings seals for sealing with the top sub and an internal wiper seal for sealing with the upper tubing string extending through the body. The upper tubing string has a seal moveable along the packer bore and includes a tubing joint coupling which is releaseably connectible in the trash barrier body permitting the trash barrier to be run into the well and landed and locked in the top sub, and thereafter the tubing string is released from the body for longitudinal movement in sealed relationship through the wiper seal. In two forms of the invention the upper tubing string is connected to the trash barrier assembly body only by shear pins. In the other form of the invention, the coupling is connected by shear pins and a threaded connection.