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:
Sep. 19, 1995
Filed:
May. 12, 1994
Applicant:
Inventors:
Derry D Sparlin, Spring, TX (US);
Tadayoshi Nagaoka, Minamikawachi-gun, Osaka, JP;
Assignee:
Other;
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B / ;
U.S. Cl.
CPC ...
166227 ;
Abstract
A maintenance screen for use in low-velocity, shallow or horizontal or slightly inclined wells is disclosed. The maintenance screen of the present invention utilizes a generally downwardly oriented portion through which fluid can pass and a generally upwardly oriented portion which does not allow sand or fluid to pass therethrough, so that sand naturally gravitates downward through the fluid and away from the portion of the screen through which the fluid may pass to enter the well tubing.
Quick Actions:
Sparlin, Derry. (1995). Gravity enhanced maintenance screen (U.S. Patent No. 5450898). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5450898
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile