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. 09, 2021
Filed:
Mar. 04, 2016
Applicant:
Herrenknecht Ag, Schwanau, DE;
Inventors:
Assignee:
HERRENKNECHT AG, Schwanau, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 21/10 (2006.01); E21B 7/04 (2006.01); E21B 17/10 (2006.01); E21B 21/00 (2006.01); E21B 17/00 (2006.01); E21B 34/06 (2006.01);
U.S. Cl.
CPC ...
E21B 21/103 (2013.01); E21B 7/046 (2013.01); E21B 17/00 (2013.01); E21B 17/10 (2013.01); E21B 21/00 (2013.01); E21B 34/06 (2013.01);
Abstract
A drill string element of a drill string, the drill string element configured to keep the pressure in the annular space between the drill string and the drill hole within calculated limits or to keep the pressures prevailing in the annular space or drill string as small as possible. Settled drill cuttings are brought back into the flow or settlement of the drill cuttings is prevented.