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:
Nov. 10, 2020
Filed:
Dec. 18, 2015
Applicant:
Halliburton Energy Services, Inc., Houston, TX (US);
Inventors:
Venkkateesh Parthasarathi Padmarekha, Anna Nagar West, IN;
Grant O. Cook, III, Spring, TX (US);
Daniel Brendan Voglewede, Spring, TX (US);
Assignee:
Halliburton Energy Services, Inc., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C21D 9/22 (2006.01); E21B 10/42 (2006.01); E21B 17/10 (2006.01); C22C 29/00 (2006.01); E21B 10/46 (2006.01); E21B 10/54 (2006.01); C21D 1/06 (2006.01); C21D 1/18 (2006.01);
U.S. Cl.
CPC ...
C21D 9/22 (2013.01); C21D 1/06 (2013.01); C21D 1/18 (2013.01); C22C 29/005 (2013.01); E21B 10/42 (2013.01); E21B 10/46 (2013.01); E21B 10/54 (2013.01); E21B 17/1092 (2013.01); C21D 2211/001 (2013.01); C21D 2211/005 (2013.01);
Abstract
The disclosure provides downhole tools with shaft regions that are hardened by a compressive residual stress created when an allotropic material in a precursor region transforms from a first allotrope to a second allotrope in response to heat, while continuing to occupy the same physical space. The disclosure further provides methods of forming such downhole tools.