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. 21, 2006
Filed:
Jun. 13, 2003
Applicants:
Robert M. Tessari, Calgary, CA;
Tommy M. Warren, Coweta, OK (US);
Per G. Angman, Calgary, CA;
Maurice William Slack, Edmonton, CA;
Inventors:
Robert M. Tessari, Calgary, CA;
Tommy M. Warren, Coweta, OK (US);
Per G. Angman, Calgary, CA;
Maurice William Slack, Edmonton, CA;
Assignee:
Tesco Corporation, Calgary, CA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 17/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
A method for drilling in unconsolidated formation is taught. In particular, a method for borehole stabilization in an unconsolidated formation includes providing a drill string; rotating the drill string to drive a drill bit to drill a borehole having a borehole wall; driving the drill string against the borehole wall while rotating the drill string to plaster the surface of the borehole wall.