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. 14, 1994
Filed:
Dec. 08, 1992
H Mitchell Cornette, Houston, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A sand control screen is installed in a well by interposing the screen in a drillstring having a retrievable bit and drive motor. The screen is drilled into place with the distal end of the drillstring and remains in the wellbore. The drillstring may be disconnected from a bottom hole assembly comprising the screen and the distal end of the drillstring and replaced by a tubing string having a packer or other external seal member interposed therein for sealing one portion of the wellbore from another. The sand control screen has a basepipe with plural apertures temporarily closed plugs which are threadedly or force-fit in the apertures. The plugs may be formed of a meltable or dissolvable fiber reinforced wax, for example, or an active metal which may be dissolved by an acid or caustic solution. The screen may also include a temporary plugging medium such as wax in the interstices of the screen sleeve to prevent accumulation of drilling fluid solids during insertion in the wellbore.