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:
Oct. 04, 2005
Filed:
Aug. 14, 2003
Applicants:
Lynn P. Tessier, Cochrane, CA;
John P. Doyle, Calgary, CA;
James L. Weber, Calgary, CA;
Inventors:
Assignee:
MSI Machineering Solutions Inc., Providenciales, TC;
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B033/16 ;
U.S. Cl.
CPC ...
Abstract
A self-retaining cementing wiper plug has two or more steel or carbide tipped holddown fingers or slips extending radially outward from the plug for engaging the inner surface of the casing and preventing the plug from moving uphole over time and potentially interfering with other downhole apparatus such as a pump.