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:
Mar. 01, 2011
Filed:
Mar. 12, 2009
Applicants:
Gary B. Lake, Houston, TX (US);
Ronnie D. Russell, Cypress, TX (US);
Inventors:
Gary B. Lake, Houston, TX (US);
Ronnie D. Russell, Cypress, TX (US);
Assignee:
Baker Hughes Incorporated, Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 34/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
Methods and devices for negating scale buildups on interior surfaces of a sliding sleeve valve housing above the flow tube. In some aspects, a wiper member provides additional clearance between the flow tube and housing to compensate for scale buildup. In other aspects, the interior surface of the valve housing is provided with a sleeve that is disposed between the interior surface of the valve housing and the general flowbore passing through the valve housing to protect the interior surface against scale buildup.