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:
Aug. 02, 1994
Filed:
Jan. 07, 1993
Lloyd G Jones, Dallas, TX (US);
Tommy J Yates, Coppell, TX (US);
Mobil Oil Corporation, Fairfax, VA (US);
Abstract
A method and apparatus for gravel packing wherein a gravel slurry is distributed to different points of a wellbore annulus from a internal passage within the apparatus thereby protecting the passage from damage during operation. The apparatus is comprised of a plurality of gravel screen units which are connected together at the lower end of a workstring. Each gravelscreen unit is comprised of a gravel screen and a valve-outlet assembly which, in turn, is comprised of a collar having an outlet and a valve for opening and closing the outlet. A washpipe is positioned within the workstring and provides a passage for delivering the slurry internally to the outlets in each of the valve-outlet assemblies. The valves are closed when the washpipe is removed.