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. 21, 2017
Filed:
Feb. 20, 2013
Applicant:
West Drilling Products As, Stavanger, NO;
Inventors:
Bjorn Eilertsen, Hundvag, NO;
Odd B. Skjaerseth, Stavanger, NO;
Assignee:
West Drilling Products AS, Stavanger, NO;
Primary Examiner:
Int. Cl.
CPC ...
E21B 19/16 (2006.01); E21B 19/06 (2006.01); E21B 3/02 (2006.01); E21B 3/06 (2006.01);
U.S. Cl.
CPC ...
E21B 19/16 (2013.01); E21B 3/02 (2013.01); E21B 3/06 (2013.01); E21B 19/06 (2013.01);
Abstract
A pipe-handling system includes at least two pipe-handling units arranged in a vertically displaceable manner along respective guide tracks of, respectively, first and second portions of a tower. The pipe-handling unit is provided with lower and upper rotary units spaced apart vertically on a chassis. Each of the rotary units is provided with a rotatable tong and a hanging-off device. A method is for inserting and withdrawing a pipe string in/from a borehole by the use of the pipe-handling system.