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:
Oct. 11, 2022
Filed:
Feb. 21, 2019
Applicant:
Equinor Energy As, Stavanger, NO;
Inventors:
Ivar Kjøsnes, Trondheim, NO;
Håvard Nasvik, Vikhammer, NO;
Assignee:
EQUINOR ENERGY AS, Stavanger, NO;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 31/107 (2006.01); E21B 31/00 (2006.01);
U.S. Cl.
CPC ...
E21B 31/107 (2013.01); E21B 31/005 (2013.01);
Abstract
In a jarring device and method for applying an impact to a casing of a wellbore in a subterranean or subsea formation, the jarring device includes a hammer and a driving means for driving the hammer between a first position in which the hammer is spaced from the casing, and a second position in which the hammer contacts the casing, such that the driving means is operable during use to drive the hammer from the first position to the second position so as to impact the casing. The hammer is reciprocated by the driving means.