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:
Jan. 07, 2020
Filed:
Mar. 18, 2016
Applicant:
Welltec A/s, Allerød, DK;
Inventor:
Peter Gråbæk, Allerød, DK;
Assignee:
Welltec A/S, Allerød, DK;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 4/00 (2006.01); E21B 4/04 (2006.01); F16H 1/46 (2006.01); E21B 29/00 (2006.01); E21B 37/00 (2006.01);
U.S. Cl.
CPC ...
E21B 4/006 (2013.01); E21B 4/04 (2013.01); F16H 1/46 (2013.01); E21B 29/002 (2013.01); E21B 37/00 (2013.01);
Abstract
A downhole tool string comprising a motor unit () having a rotational shaft rotating with a rotational motor speed; a gear section; an operational tool having a tool shaft rotated by the gear section () at a lower rotational speed than that of the rotational shaft; and a pump unit () having a rotor shaft rotated by the motor unit () for providing fluid around or past an operational tool (). The pump unit () is arranged between the gear section () and the operational tool ().