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:
Jun. 10, 2008
Filed:
May. 06, 2005
Dewayne M. Turner, Tomball, TX (US);
Marvin Bryce Traweek, Houston, TX (US);
Stephen C. Yeary, Houston, TX (US);
Gregg W. Stout, Mongtomery, TX (US);
Christopher L. Blackler, Spring, TX (US);
Dewayne M. Turner, Tomball, TX (US);
Marvin Bryce Traweek, Houston, TX (US);
Stephen C. Yeary, Houston, TX (US);
Gregg W. Stout, Mongtomery, TX (US);
Christopher L. Blackler, Spring, TX (US);
BJ Services Company, Houston, TX (US);
Abstract
A well system comprising an improved cross-over tool is provided. The tool may comprise a debris shield for substantially preventing sand, proppant or other well debris from fouling a flow port closing sleeve located below the cross-over tool fracture ports; a return port cover adapted to close or open a return port upon contact with a designated downhole surface regardless of tubing movement caused by stretching or contracting under stress or other induced pipe movement from downhole conditions; or a collet-type circulation valve adapted to mechanically indicate the position or flow status of the cross-over tool.