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US20120090843 |
HYDRAULIC JAR
The invention relates to oil and gas industry and can be used in well drilling as a part of a Bottom Hole Assembly (BHA) to releasing stuck tools or equipment by applying axial and torque impacts.... |
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US20150176357 |
Impact Sensing During Jarring Operations
A jarring tool operable for coupling within and generating an impact imparted to a downhole tool string. The jarring tool includes an upper housing, a lower housing, and a shaft coupled with the... |
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US20090266544 |
SIGNAL OPERATED TOOLS FOR MILLING, DRILLING, AND/OR FISHING OPERATIONS
Embodiments of the present invention generally relate to signal operated tools for milling, drilling, and/or fishing operations. In one embodiment, a mud motor for use in a wellbore includes: a... |
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US20090260822 |
BACKOFF SUB AND METHOD FOR REMOTELY BACKING OFF A TARGET JOINT
A backoff sub includes a housing; and a backoff facilitator at least partially within the housing and capable of adding energy to a system within which the sub is disposable and method. |
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US20090166026 |
Jar device for use in coil tubing drilling
The invention relates to a jar operated by fluid pressure, specially designed for use in drilling or maintenance operations carried out in oil or gas wells. The jar comprises a first (1) and a... |
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US20110146990 |
BACKOFF SUB AND METHOD FOR REMOTELY BACKING OFF A TARGET JOINT
A backoff sub includes a housing; and a backoff facilitator at least partially within the housing. Capable of adding energy to a system within which the sub is disposable. A method for managing a... |
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US20150211317 |
Downhole Amplification Tool
An exemplary embodiment of the amplification device generally includes amplification springs, complementary amplification spring seats for the respective ends of the amplification springs, and a... |
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US20070074867 |
Jar device
A jar for use in a downhole environment comprises a mandrel, a spline body, and a tool body, where the spline body provides a slideable engagement with the mandrel and anvil surfaces for absorbing... |
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US20150129220 |
PUMP ACTUATED JAR FOR DOWNHOLE SAMPLING TOOLS
An apparatus configured to impart a force on a downhole component, having a piston configured to expand from a movement of a drilling fluid in a downhole environment, a weight configured to move... |
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US20090308593 |
DOUBLE-ACTING JAR COMPOUNDER
A double-acting jar compounder is disclosed having a first end and a second end, and comprising an outer housing, an upper mandrel, and a lower mandrel. The upper mandrel defines the first end.... |
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US20120043073 |
Twin Latch Wireline Retrieval Tool
The retrieving tool engages an equalizing sleeve on a jar down movement while the packer or bridge plug release sleeve is held fixed with a locking dog. The initial jarring down allows the tool to... |
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US20090301707 |
DOUBLE-ACTING JAR
A double-acting jar comprises an inner mandrel and an outer housing. The inner mandrel is disposed telescopically within the outer housing to define a fluid chamber in between. There is an uphole... |
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US20150114643 |
WIRELINE DOWN JAR
A jar assembly for use downhole includes a housing, a piston assembly slidable within and selectively coupled to the housing, a mandrel assembly coupled on a lower end of the piston assembly, and... |
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US20120298365 |
Compact Jar for Dislodging Tools in an Oil or Gas Well
This invention relates to a jar used to dislodge tools stuck in a well. The jar includes two housing portions movable with respect to each other. A release collet forms a portion of one of the... |
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US20080149340 |
Jars for wellbore operations
An example of an apparatus for jarring a wellbore tool from an obstruction includes four sub-assemblies in communication with three springs such that the springs may be compressed forcing the... |
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US20100258314 |
Jars for Wellbore Operations
An example of an apparatus for jarring a wellbore tool from an obstruction includes four sub-assemblies in communication with three springs such that the springs may be compressed forcing the... |
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US20110000663 |
DEVICE FOR PLUG REMOVAL
A device is described for removal of a plug which is used in a well, a pipe, or the like for carrying out tests, and it is characterised by an element which, with an applied forced, is arranged to... |
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US20090223676 |
Selective Agitation
A fluid actuated downhole tool for inducing movement of a downhole apparatus is described. The tool comprises a body for coupling to downhole apparatus, the body being adapted to accommodate now... |
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US20090025928 |
DOWN HOLE TOOL WITH ADJUSTABLE FLUID VISCOSITY
A down hole tool includes a tool body, a fluid cavity, a magnetorheological fluid disposed in the fluid cavity, and an electrical control unit in communication with the MR fluid. The electrical... |
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US20110220345 |
Dual Acting Locking Jar
A double action locking jar is operable to provide a jarring force in an upward or downward direction. A pair of pressure pistons form a pressure chamber in which a Belleville spring stack is... |
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US20150204153 |
Change-Over Arrangement for a Cable Operated Jar
A cable-operated jar comprising a releasable coupling is arranged for connection to a piece of downhole equipment, in which a mandrel is connected to a cable comprising a hammer section. The... |
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US20140196911 |
ELECTROMAGNETICALLY ACTIVATED JARRING
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... |
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US20120227970 |
Jarring Method and Apparatus Using Fluid Pressure to Reset Jar
A method and apparatus for delivering repetitive jarring impacts to a stuck object downhole. The jarring tool is deployed on coiled tubing or other tubular well conduit, and fluid pressure is used... |
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US20110132598 |
DOWNHOLE JARRING TOOL WITH REDUCED WEAR LATCH
A jarring tool having an extensible joint connecting first and second sub ends is disclosed. A first inner latch piece connects to the upper sub end, and a second outer latch piece connects to the... |
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US20100126710 |
Stroker Tool
A stroker tool for providing an axial force in an axial direction of a downhole tool. The stroker tool has a pump, a driving unit for driving the pump, and an axial force generator. The generator... |
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US20130277057 |
Hydraulic/Mechanical Tight Hole Jar
A jar comprises a housing including an anvil. In addition, the jar comprises a mandrel telescopically disposed within the housing and including a hammer. Further, the jar comprises an annular... |
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US20120018144 |
JAR WITH IMPROVED VALVE
A jar is disclosed comprising: an outer housing; an inner mandrel at least partially disposed telescopically within the outer housing to define a fluid chamber between the inner mandrel and the... |
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US20110132597 |
DOWNHOLE JARRING TOOL
A tool having a first lower sub end, a second upper sub end, and an extensible joint connecting the first and second sub ends is disclosed. The joint has a first inner latch piece connected to the... |
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US20130168092 |
Double-Acting Shock Damper for a Downhole Assembly
A downhole assembly, including a downhole tool, a downhole force-creating device, and a shock damper. The shock damper includes a hollow housing including an annular shoulder near each end and... |
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US20100307739 |
Double-Acting Jar
A double-acting jar is disclosed comprising: an outer housing; an inner mandrel at least partially disposed telescopically within the outer housing to define a fluid chamber between the inner... |
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US20090095490 |
Electrically activating a jarring tool
A method of using jarring tool in a wellbore, where the jarring tool is electrically activated to apply an impact force transmitted to at least another tool in the well. The method may further... |
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US20120160477 |
LARGE BORE JAR FOR A DRILL STRING
A drill string includes a bit sub mounted to a lower end of a plurality of tubular sections, where at least one tubular section is a jar. The jar and the tubular sections have an inner diameter... |
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US20120222857 |
ASSEMBLY
A transport assembly comprising: an attachment member attachable to a downhole tool; normally two rotatable members, connected to the attachment member, the rotatable members being arranged to... |
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US20140014321 |
Assembly
A downhole transport assembly (100, 101) having first and second members (10, 20) having a common longitudinal axis, at least one of the members (10, 20) being rotatable about the longitudinal... |
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US20110011588 |
Tension-Activated Fluid Bypass Device
A fluid bypass tool that can be incorporated into a fishing arrangement between a fluid-operated latching tool and a fluid-operated jarring tool. The latching tool is actuated with fluid from the... |
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US20090194285 |
METHOD FOR JARRING WITH A DOWNHOLE PULLING TOOL
The present invention generally relates to an apparatus and method of jarring with an overpull generator. In one aspect, a method of dislodging an object stuck in a wellbore is provided. The... |
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US20110030944 |
JARRING TOOL WITH MICRO ADJUSTMENT
A jarring tool is disclosed. The tool has a segment of sub housing containing an upper stop proximate a first end thereof. An outer latch piece is connected to an upper end of the lower shaft... |
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US20130062052 |
PRESSURE LOCK FOR JARS
Embodiments disclosed herein relate to a jar including the following: a mandrel; an outer housing slidably disposed about the mandrel; a ball stop housing disposed below the outer housing; a lower... |
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US20100206568 |
Devices, Systems and Methods for Equalizing Pressure in a Gas Well
Devices, systems and methods for equalizing pressure in a gas well are provided. A jar device is coupled to a pump deployed in a gas well between areas of low pressure and high pressure. The jar... |
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US20170175475 |
JARRING USING CONTROLLABLE POWERED BIDIRECTIONAL MECHANICAL JAR
A method for jarring allowing the operator to selectively control the jarring force while the tool is downhole and a powered bidirectional mechanical jar therefor, is disclosed. The jar includes a... |
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US20170089160 |
Non-Releasing Anchor Tool when Jarring Up on a Stuck Subterranean Tool Component
A grip a no goes in a subterranean tool to properly position grip members held radially outward with a cone on delivery of an uphole force. In the case of a subsurface safety valve that has a flow... |
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US20160237771 |
Release Lugs for a Jarring Device
A release mechanism for a jarring tool is formed by a plurality of segmented release lugs. Each lug includes a plurality of axial spaced projections on an inner surface and a plurality of grooves... |
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US20160230489 |
Predetermined Load Release Device for a Jar
A release device for a jarring tool includes a collet positioned between the mandrel of the jarring tool and a trigger sleeve. At least one end of the collet is in contact with a precompressed... |
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US20160145959 |
Flow Restricted Impact Jar
An apparatus for coupling between opposing first and second portions of a downhole tool string. The apparatus includes a housing having a port therein, a shaft extending within at least a portion... |
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US20160102515 |
Hydraulic Impact Apparatus and Methods
A hydraulic jar coupled between opposing first and second portions of a downhole tool string. The hydraulic jar includes a housing comprising a shoulder protruding radially inward from an internal... |
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US20160102514 |
DOWNHOLE IMPACT GENERATION TOOL AND METHODS OF USE
Disclosed is an impact generation tool used to deliver a large downhole impact force. The impact generator may include a housing having an uphole end and a downhole end and defining a chamber... |
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US20160032673 |
PRESSURE LOCK FOR JARS
Embodiments disclosed herein relate to a jar including the following: a mandrel; an outer housing slidably disposed about the mandrel; a ball stop housing disposed below the outer housing; a lower... |
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US20150361751 |
Jarring Tool
A jarring tool that includes a first portion and a second portion. An impact point is located between the first portion and the second portion. The jarring tool has an internal energy source that... |
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US20150267494 |
HYDRAULIC JAR AND A FLOW CONTROL DEVICE USABLE IN THE HYDRAULIC JAR
A hydraulic jar comprising a housing and a mandrel slidably disposed in the housing forming an annular space therebetween. In an embodiment, the hydraulic jar comprises a flow control device... |