Patent · US Active

Jarring device and method

US11466531B2 · kind B2 · utility

0Cited by

8References

18Claims

0Family size

Assignee

EQUINOR ENERGY AS · NO

Inventors

Ivar Kjøsnes · Trondheim, NO
Håvard Nasvik · Vikhammer, NO

Key dates

Filing date	Feb 21, 2019
Grant date	Oct 11, 2022
Priority date	—
Expiry date	Apr 27, 2039

Classification

Technology area (CPC E)Fixed Constructions
CPC primaryE21B31/005
WIPO fieldCivil engineering
WIPO sectorOther fields

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.