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. 15, 1993
Filed:
Feb. 25, 1992
James W Martin, Missouri City, TX (US);
Edward G Dew, Woodlands, TX (US);
Conoco Inc., Ponca City, OK (US);
Abstract
The present invention provides a preperforated casing for a well bore and a method of installing a preperforated casing in a well bore. The inventive casing comprises (a) a conduit having a plurality of apertures extending through the wall thereof and (b) a liner fixed adjacent at least a portion of the interior surface of the conduit such that the liner is positioned adjacent the apertures and is operable for preventing fluid flow through the apertures. The liner is removable from the conduit by drilling. Additionally, the liner comprises a material which, upon drilling, will break up into pieces which can be readily circulated out of the well. The inventive method comprises the steps of running the inventive casing into a well bore and then drilling the liner such that the liner is broken up into pieces and the above-mentioned apertures are open for fluid flow.