US 10,094,191 B2 · Electromagnetically activated jarring

Abstract

An impact apparatus conveyable in a tool string within a wellbore comprises a mandrel, a first impact feature, and a latch pin retainer encircling an end of the mandrel. A release sleeve encircles a portion of the latch pin retainer and includes a radial recess. Latch pins retained by the latch pin retainer are slidable into and out of the radial recess, and prevent disengagement of the mandrel end from the latch pin retainer when not extending into the radial recess. A release member electromagnetically causes relative translation of the latch pin retainer and the release sleeve, including aligning the latch pins with the radial recess and thereby permitting the disengagement. A second impact feature is positioned to impact the first impact feature in response to the disengagement when the impact apparatus is under tension.

Claims20

Dependent claims

An apparatus comprising:

an impact tool conveyable in a tool string within a wellbore extending into a subterranean formation, wherein the impact tool comprises:
a first engagement feature connected with a housing;
a shaft extending within at least a portion of the housing, wherein the housing and the shaft move axially relative to each other;
a second engagement feature connected with the shaft and engaged with the first engagement feature;
and
a release member selectively movable with respect to the first and second engagement features via a signal received from wellsite surface equipment while the impact tool is disposed within the wellbore to cause the impact tool to impart an impact force to the tool string.

3 more elements

A method comprising:

conveying a tool string within a wellbore extending into a subterranean formation from a wellsite surface, wherein the tool string comprises an impact tool comprising a shaft movably disposed within at least a portion of a housing and selectively coupled with the housing via:
a first engagement feature connected with the housing;
a second engagement feature connected with the shaft and engaged with the first engagement feature;
and
a release member preventing disengagement of the first and second engagement features;
applying a tensile force to the impact tool via a conveyance means extending between the wellsite surface and the tool string;
and
while the tensile force is applied to the impact tool, transmitting a signal from the wellsite surface to the impact tool to cause the release member to move axially with respect to the first and second engagement features to permit the first and second engagement features to disengage and thereby permit the housing and shaft to move axially relative to each other to cause the impact tool to impart an impact force to at least a portion of the tool string.

5 more elements

Dependencies are inferred from the claim text.

Electromagnetically activated jarring

Life of this patent

Electromagnetically activated jarring

Life of this patent

Abstract

Claims20