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:
Apr. 16, 2002
Filed:
Oct. 10, 2000
Jeffrey Bode, The Woodlands, TX (US);
Eric Lauritzen, Kingwood, TX (US);
Weatherford/Lamb, Inc., Houston, TX (US);
Abstract
The present invention provides an apparatus for use in a wellbore to compensate for pressure differentials between fluid in the wellbore and fluid in an oil bearing formation therearound. In one aspect of the invention, an apparatus is provided for insertion in a string of screened tubulars in a horizontal wellbore. The device includes an inner tubular body portion having apertures in the wall thereof for passing oil, an outer tubular body and a pathway therebetween permitting oil from a formation to migrate into the inner body. Disposed around the inner body is an axially movable member to selectively cover and expose the apertures of the inner body, thereby permitting fluid to flow therethough.