| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 61 | DOWNHOLE DRILL STRING HAVING A COLLAPSIBLE SUBASSEMBLY | EP03763429.2 | 2003-07-10 | EP1540129B1 | 2008-12-17 | BAIRD, Jeffery, D. |
| A method and apparatus for allowing a downhole drill string to be stuck at one location and continue to rotate above the stuck section. The apparatus provides a method for collapsing the stuck subassembly by reducing its outside diameter. Simultaneous with the subassembly collapse, a jarring action is initiated from within the drill string to further loosen the stuck sections. At the same time drilling fluid inside the string is allowed to circulate outside the string through a circulation sub. The fluid is forced around the stuck subassembly further increasing the likelihood that the subassembly will be freed. | ||||||
| 62 | A jar for use in a downhole toolstring | EP07075922.0 | 2004-07-21 | EP1878869A2 | 2008-01-16 | Marsh, Brent |
A jar (10), for use in a downhole toolstring comprising: a hollow housing (11); a jar mandrel (13); a latch sub (14); one or more latch keys (16); a cam surface (17); a chamber (23); a compression spring; and an adjuster (24). The hollow housing (11) supports, moveably retained therein, the jar mandrel (13). The jar mandrel (13) and the latch sub (14) are releasably securable together by means of the one or more latch keys (16); and each latch key (16) is moveable between a latching position, in which the latching sub (14) and the jar mandrel (13) are connected together, and a release position permitting separation thereof. An adjuster portion (510 is threadedly connected to the jar mandrel (13) such that rotation of the adjuster mandrel (47) relative to the jar mandrel (13) alters the length of the chamber (23) and hence the degree of compression of the compression spring (24).
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| 63 | FIELD ADJUSTABLE IMPACT JAR | EP04818316.4 | 2004-10-27 | EP1697613A2 | 2006-09-06 | McELROY, Fay; BURNTHORNE, James, Jr; GUIDRY, Lonnie |
| An impact jar including a biasable member, an impactor and an impactee slidably coupled to the impactor. The impactor includes a first down-hole tool connector. The impactee includes a second down-hole tool connector distal from the first down-hole tool connector and a plurality of flexible coupling fingers. The biasable member is detachably engaged by the plurality of flexible coupling fingers in a pre-impact position and is configured to disengage the plurality of flexible coupling fingers in response to a tensile force applied across the first and second down-hole tool connectors reaching a predetermined quantity. The impactor and the impactee are configured to impact in response to the disengagement of the biasable member and the plurality of flexible coupling fingers. In one embodiment, the impact jar may be employed in either of e-line and slickline applications. | ||||||
| 64 | Impact enhancing apparatus and method | EP05253899.8 | 2005-06-23 | EP1609945A3 | 2006-01-11 | Solem, Siguro; Shears, Carl |
The invention provides an impact enhancer apparatus comprising a substantially tubular inner member (10), a substantially tubular outer member (12) which is axially movable in relation to the inner member (10), a primary energy storage device (50) adapted to store energy when the inner member (10) is moved in either of first and second axial directions with respect to the outer member (12) and a secondary energy storage device (48) adapted to store energy when the inner member (10) is moved in a first axial direction with respect to the outer member (12). The primary energy storage device (50) can comprise a primary biasing device. The secondary energy storage device can comprise a secondary biasing device. The primary and/or secondary biasing devices can be a spring device selected from the group consisting of: disk springs; coiled springs; fluid and gas springs. The impact enhancing devices preferably comprise tubulars having double shoulder high torque connections (J1, J2, J3).
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| 65 | DOWNHOLE DRILL STRING HAVING A COLLAPSIBLE SUBASSEMBLY | EP03763429.2 | 2003-07-10 | EP1540129A1 | 2005-06-15 | BAIRD, Jeffery, D. |
| A method and apparatus for allowing a downhole drill string to be stuck at one location and continue to rotate above the stuck section. The apparatus provides a method for collapsing the stuck subassembly by reducing its outside diameter. Simultaneous with the subassembly collapse, a jarring action is initiated from within the drill string to further loosen the stuck sections. At the same time drilling fluid inside the string is allowed to circulate outside the string through a circulation sub. The fluid is forced around the stuck subassembly further increasing the likelihood that the subassembly will be freed. | ||||||
| 66 | JAR WITH ELECTRICAL CONDUCTOR | EP01975778.0 | 2001-09-24 | EP1334257A2 | 2003-08-13 | Evans, Robert W. |
| Various embodiments of a downhole tool (10) with a telescoping conductor member are provided. In one aspect, a downhole tool (10) is provided that includes a housing (14) and a mandrel (12) telescopically positioned in the housing (14). The mandrel (12) and the housing (14) define a pressure compensated substantially sealed chamber (234) containing a volume of a non-conducting fluid. A conductor member (26) is positioned in the housing (14) for providing an electrically conducting pathway. The conductor member (26) has a first segment (28, 32) and a second segment (36). The first segment (28, 32) is moveable with the mandrel (12) and relative to the second segment (36). A portion of the conductor member (26) is electrically insulated from an ambient fluid by the non-conducting fluid. A first biasing member (38) is provided for maintaining a conducting pathway between the first segment (28, 32) and the second segment (36). The tool (10) provides for electrical transmission in a telescoping tool. | ||||||
| 67 | IMPACT ENHANCING TOOL | EP98938766.7 | 1998-08-07 | EP1003954A1 | 2000-05-31 | FRIIS, Niels, Christian, Olaf |
| A double acting jar enhancer tool is disclosed capable of storing energy to enhance both upward and downward impacts delivered by a drilling jar. The enhancer stores energy in a single energy storage means (40) (typically a single stack of bellville washer springs) irrespective of which direction it is moved, obviating separate energy storage means for upward and downward blows. | ||||||
| 68 | MECHANICAL-HYDRAULIC DOUBLE-ACTING DRILLING JAR | EP96917095.0 | 1996-06-03 | EP0830493B1 | 2000-05-17 | EVANS, Robert, W. |
| A mechanical-hydraulic double-acting drilling jar includes an inner tubular mandrel (12) telescopingly supported inside an outer tubular housing (14). The mandrel and the housing each consist of a plurality of tubular segments joined together, preferably by threaded inner connections. Upper (134) and lower (166) pressure pistons are slidably disposed within the housing, respectively closing upper and lower substantially sealed hydraulic chambers (132, 164). Longitudinal movement of the mandrel engages the collet (184), which in turn, translates either the upper piston (134) or the lower piston (166), depending on the direction of mandrel movement. As one of the pistons is moved, fluid pressure builds in the associated hydraulic chamber, retarding further movement of the mandrel, enabling potential energy to build in the drill string. The collet is restricted from expanding until the mandrel reaches a particular point in the housing, at which time the collet expands, releasing the mandrel to rapidly collide a hammer surface (32, 21) thereon with an anvil surface (44, 41) in the housing. | ||||||
| 69 | MECHANICAL-HYDRAULIC DOUBLE-ACTING DRILLING JAR | EP96917095.0 | 1996-06-03 | EP0830493A1 | 1998-03-25 | EVANS, Robert, W. |
| A mechanical-hydraulic double-acting drilling jar includes an inner tubular mandrel (12) telescopingly supported inside an outer tubular housing (14). The mandrel and the housing each consist of a plurality of tubular segments joined together, preferably by threaded inner connections. Upper (134) and lower (166) pressure pistons are slidably disposed within the housing, respectively closing upper and lower substantially sealed hydraulic chambers (132, 164). Longitudinal movement of the mandrel engages the collet (184), which in turn, translates either the upper piston (134) or the lower piston (166), depending on the direction of mandrel movement. As one of the pistons is moved, fluid pressure builds in the associated hydraulic chamber, retarding further movement of the mandrel, enabling potential energy to build in the drill string. The collet is restricted from expanding until the mandrel reaches a particular point in the housing, at which time the collet expands, releasing the mandrel to rapidly collide a hammer surface (32, 21) thereon with an anvil surface (44, 41) in the housing. | ||||||
| 70 | REVERSE PERCUSSION DEVICE | EP95920605.0 | 1995-05-15 | EP0759116A1 | 1997-02-26 | CAMPBELL, Paul |
| A reverse percussion device (30) for use with hydraulic percussive drills is provided. The reverse percussion device (30) includes a cycling piston (34), valve (36) and anvil (38). The piston (34) and valve (36) move in opposing directions between low and high pressure passages automatically until a lodged drill bit (18) is freed, thereby facilitating removal of the drill bit (18) from the drilled hole and eliminating alternate loosening and tightening of drill string threads (14). The reverse percussion device (30) preferably includes an automatic disabling feature which causes the reverse percussion operation to cease when the bit is free to retract normally. | ||||||
| 71 | Downhole well tool | EP84301338 | 1984-03-01 | EP0121329A3 | 1988-02-03 | Skinner, Neal Gregory; Wesson, David Sanford |
A downhole tool includes a pipe string portion which is disposed in a pipe string of a well and a probe portion which can be lowered by wireline or other suitable means into the well for engagement with the pipe string portion. The pipe string portion includes a sliding sleeve valve (8) which is biased in a closed, or unactuated position (as drawn), by a spring (10) contained within the pipe string portion. The probe portion includes a connector mechanism (84) which engages (lugs 78) of the pipe string portion for imparting an opposing force to the sliding sleeve valve which overcomes the biasing force of the spring, so that the valve can be opened (ports 100,56 and 36 in alignment) to permit reservoir pressure to enter a cavity of the probe portion containing a sensor mechanism. The coupling and decoupling of the connector mechanism with the lugs is effected through downward and upward movements of the probe portion. The probe portion also includes a jarring mechanism (146, 148) for applying either an upward or a downward force impulse to the probe portion to facilitate its movement should it become stuck, for example. |
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| 72 | Mechanische Schlagschere | EP86101731.7 | 1986-02-12 | EP0201668A1 | 1986-11-20 | Heidemann, Gerhard, Dipl.-Ing.; Witte, Johannes, Dipl.-Ing. |
Die mechanische Schlagschere zum Einfügen in einen Bohrstrang für Tiefbohrungen besteht aus einer Muffe (2) mit einem darin längsbeweglich gelagerten Dorn (1), gegenseitigen Schlagschultern (31,33;32,34) am Dorn (1) und an der Muffe (2) und einer durch Axialbelastung der Schlagschere durch den Bohrstrang ausrastbaren Rastvorrichtung, die gegen die Kraft einer Federanordnung (13) verschiebbar abgestützte Schwenkriegel (9), ein mit deren freien Enden verriegelnd zusammenwirkendes Widerlager (10) und einen Verriegelungsbund (11) umfaßt, der in Raststellung der Teile die freien Enden (14) der Schwenkriegel (12) außenseitig umgreift und in Rasteingriff am Widerlager (10) hält. Zum Ausschwenken der Schwenkriegel (9) aus ihrer Raststellung weisen die freien Enden (14) der Schwenkriegel (9) einer schrägen Gleitfläche (30) des Widerlagers (10) zugewandte schräge Gleitflächen (15) auf, und es ist eine Schiebehülse (25) vorgesehen, welche die Schwenkriegel (9) in koaxialer Anordnung zur Achse (8) der Schlagschere um Schwenkachsen (12) schwenkbar abstützt. Dabei ist die Rastvorrichtung (5) als Doppelvorrichtung ausgebildet, die den Dorn (1) und die Muffe (2) gegen axiale Relativbewegungen sowohl bei aufwärts- als auch bei abwärts-gerichteter Belastung der Muffe (2) verriegelt und zwei untereinander gleiche, jedoch entgegengesetzt ausgerichtete Teileinheiten (5,6) aufweist, zwischen deren Schiebehülsen (25) ein beldenTeileinheiten (5,6) gemeinsames Federmittel (24) angeordnet ist. |
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| 73 | Attachment for a percussive rock drilling machine | EP82850208.8 | 1982-10-22 | EP0081469B1 | 1986-07-23 | Nilsson, Hans Gösta Bertil; Nilsson, Kurt Alfred Gunnar |
| 74 | Wireline jar | EP84308827.9 | 1984-12-17 | EP0147154A1 | 1985-07-03 | ZWART, Klaas Johannes |
An upstroke wireline jar having a hammer 12 at the bottom end of an operating rod 3 which is axially slidable in a casing 2 having an anvil 13 at its upper end. This casing also includes a releasable coupling means which is biased downwards by a spring 5 to a rest position, said coupling means comprising a sleeve 4 which receives the rod 3 into its upper end and a plurality of arcuate segments 9 which are contained in apertures in the sleeve and engage in a circumferential groove 10 in the rod. Circumferential recesses 11 and 17 in the interior wall of the casing 2 are adapted to partially receive the segments when the sleeve is in appropriate registration therewith thereby facilitating disconnection and subsequent re-engagement of the operating rod with the sleeve. The spring 5 is mounted below the hammer so as to allow free travel of the latter along a substantial portion of the casing. The spring is provided with an upper abutment 6 mounted on a rod 7 the axial position of which is adjustable from outside the jar. At its bottom end the spring 5 abuts a flanged bush 15 which depends from the sleeve 4. A second spring 6 assists in biasing the sleeve to its rest position. |
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| 75 | Downhole well tool | EP84301338.4 | 1984-03-01 | EP0121329A2 | 1984-10-10 | Skinner, Neal Gregory; Wesson, David Sanford |
A downhole tool includes a pipe string portion which is disposed in a pipe string of a well and a probe portion which can be lowered by wireline or other suitable means into the well for engagement with the pipe string portion. The pipe string portion includes a sliding sleeve valve (8) which is biased in a closed, or unactuated position (as drawn), by a spring (10) contained within the pipe string portion. The probe portion includes a connector mechanism (84) which engages (lugs 78) of the pipe string portion for imparting an opposing force to the sliding sleeve valve which overcomes the biasing force of the spring, so that the valve can be opened (ports 100,56 and 36 in alignment) to permit reservoir pressure to enter a cavity of the probe portion containing a sensor mechanism. The coupling and decoupling of the connector mechanism with the lugs is effected through downward and upward movements of the probe portion. The probe portion also includes a jarring mechanism (146, 148) for applying either an upward or a downward force impulse to the probe portion to facilitate its movement should it become stuck, for example. |
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| 76 | Attachment for a percussive rock drilling machine | EP82850208 | 1982-10-22 | EP0081469A3 | 1984-07-11 | Nilsson, Hans Gösta Bertil; Nilsson, Kurt Alfred Gunnar |
An attachment for a percussive rock drilling machine (12) of the kind being displaceable along a feed beam (14) by a feeding motor. The attachment (15) is arranged for enabling withdrawal of drill steels (16) which are stuck in the drilled hole. The attachment (15) comprises a spring housing (17) which contains a compressive spring (22) and a stopping member (23), said housing being suspended by flexible means (26. 27) from a yoke-shaped member (18) coupled on to the drilling machine body (19). The stopping member (23) is arranged to abut against a coupling sleeve (32) or the like on the drill steel (16). When retracting the drilling machine (12) by said feeding motor and starting the ordinary percussive action the impacts directed downwards will be transformed to impacts directed upwards which loosen and withdraw the stuck drill steel (16). |
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| 77 | JARRING APPARATUS | EP18157240.5 | 2014-04-17 | EP3358126A1 | 2018-08-08 | MOYES, Peter Barnes |
A downhole jarring apparatus for use in jarring an object in a bore comprises a first jarring portion including a first impact surface and a second jarring portion including a second impact surface. The apparatus includes a rotatable jarring arrangement provided separately from the impact surfaces and being operable to translate a rotational drive movement to cause relative axial movement of the first and second impact surfaces to establish axial impact therebetween.
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| 78 | SHOCK INDUCEMENT IN CORE BARREL ASSEMBLY | EP16791866 | 2016-05-11 | EP3294980A1 | 2018-03-21 | OUELLET FRANÇOIS; GUILLEMETTE MAXIME |
| A core barrel assembly for a drill string comprising a core barrel, an inner tube assembly removably positionable within the core barrel, and a mechanical shock inducement mechanism for inducing at least one shock, and preferably a plurality of shocks, in the inner tube assembly. This induced shocks help reduce occurrences of blockage of core samples entering the inner tube assembly in fractured or brittle rock formations. | ||||||
| 79 | RELEASE LUGS FOR A JARRING DEVICE | EP16749589.4 | 2016-01-27 | EP3256685A1 | 2017-12-20 | Evans, Robert W. |
| 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 on an outer surface. The projections have either different widths or are separated by varying distances and releaseably engage corresponding grooves in a mandrel located within a housing of the tool. The release lugs are positioned between a trigger sleeve and the mandrel. | ||||||
| 80 | MECHANICAL HAMMERING TOOL FOR USE IN OIL WELLS | EP15777543 | 2015-04-10 | EP3129582A4 | 2017-11-15 | WOOD JOHN ROBERT LOXLEY |
| The invention relates to a cable-operated hammering tool (20) for downhole operations, comprising an extended cylinder (3) with an axially through-going internal opening in the cylinder (3), a hammering part (10) is arranged in a lower section of the cylinder (3) and is fitted with a detachable coupling for the connection with downhole equipment, a release strut (1) is arranged in the upper section of the cylinder (3) that is connected to a cable which is connected to a surface installation, the hammering part is detachably fastened to the cylinder (3) with the help of, at least, one locking body (4). The release strut (1) is functionally connected to a force spring (2) for prestressing of this by moving in a first direction, and also functionally coupled to the, at least, one locking body (4) to be released from this by moving in an opposite direction. | ||||||
