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:
Feb. 06, 2018
Filed:
Feb. 20, 2015
Ludovic Delmar, Braine-l'Alleud, BE;
Olivier Jean-marc Claude Mageren, Brussels, BE;
Eric Fannes, Braine-l'Alleud, BE;
Ludovic Delmar, Braine-l'Alleud, BE;
Olivier Jean-Marc Claude Mageren, Brussels, BE;
Eric Fannes, Braine-l'Alleud, BE;
Halliburton Energy Services, Inc., Houston, TX (US);
Abstract
There is disclosed herein drilling apparatus, in particular for use in the field of oil prospecting, comprising: a first tubular member (); a second tubular member () mounted at least partly within the first tubular member so as to be reciprocally free in rotation with respect to the first tubular member about an axis (); and a drill bit () operatively connected to one of the first or second tubular members so as to be rotated in response to the one tubular member being turned in order to effect drilling, characterized in that: the drilling apparatus further comprises a restoring member () for applying a forces between the first tubular member and the second tubular member at least in respective first axial directions in response to relative displacement of the first tubular member and the second tubular member in the respective opposite axial directions. Also provided are a tubular assembly and a method of assembling tubular members.