US20160319613A1 - A casing tool - Google Patents
A casing tool Download PDFInfo
- Publication number
- US20160319613A1 US20160319613A1 US15/104,542 US201415104542A US2016319613A1 US 20160319613 A1 US20160319613 A1 US 20160319613A1 US 201415104542 A US201415104542 A US 201415104542A US 2016319613 A1 US2016319613 A1 US 2016319613A1
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- Prior art keywords
- casing
- top cover
- sleeve
- tubular
- axial
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- Abandoned
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- 238000000034 method Methods 0.000 claims abstract description 16
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- 230000003993 interaction Effects 0.000 claims description 6
- 238000003780 insertion Methods 0.000 claims description 5
- 230000037431 insertion Effects 0.000 claims description 5
- 230000003213 activating effect Effects 0.000 claims description 2
- 239000012530 fluid Substances 0.000 description 9
- 241000239290 Araneae Species 0.000 description 5
- 238000005553 drilling Methods 0.000 description 4
- 238000003825 pressing Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000004913 activation Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
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- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- 230000003245 working effect Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/16—Connecting or disconnecting pipe couplings or joints
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/02—Rod or cable suspensions
- E21B19/06—Elevators, i.e. rod- or tube-gripping devices
Definitions
- the present invention concerns a casing tool and a method for connecting casing tubulars using a top drive as disclosed in the introductory part of the main claims. More specifically the invention concerns at casing tool that may be releasably fixed to a top drive in a drilling derrick for interconnecting casing tubulars, i.e. casings inserted into drilling holes for hydrocarbon productions.
- sections of casing tubulars are being interconnected and inserted into a borehole to achieve the extended length of the borehole lining.
- the slips of a spider located on the floor of the drilling platform are often used.
- the new section or stand of casing is then moved from a rack to the well centre above the spider.
- the treaded pin of the section of casing tubular to be connected is then located over the threaded box of the casing in the well and the connection is made up by rotation there between.
- An elevator is then connected to the top of the new section and the whole casing string is lifted slightly to enable the slips of the spider to be released.
- the whole casing string is then lowered until the top of the section is adjacent the spider whereupon the slips of the spider are re-applied, the elevator disconnected and the process repeated.
- top drive In the last decades use of top drive has been common in order to perform the interconnection of casing tubulars with sufficient torque strength. This type of operations requires the use of a dedicated tool that may connect to the top drive in one longitudinal end and may engage with the casing tubular at the other end so that the casing tubular can be rotated and lifted/lowered in to/out of the bore hole.
- An example of connecting tubular sections using a top drive and a corresponding casing tool is disclosed in publication WO 00/05483.
- This casing tool comprises a plurality of gripping elements that are radially displaceable by hydraulic or pneumatic fluid in order to drivingly engage the tubular section. This again permits a screw connection between the engaged tubular section and a further tubular section with the required torque.
- top drive and a casing tool Another example of a top drive and a casing tool is found in publication WO 2006/116870 A1 disclosing a casing tool comprising a body assembly and a gripping assembly with a grip surface adapted to move from a retracted position to an engaged position to radially engage a work piece in response to relative axial displacement, the latter being activated by relative rotation within the tool.
- publication U.S. Pat. No. 8,454,066 B2 discloses a tool for moving rigid spokes arranged in close fitting relation with spike guides on an annular body to allow for radial movements only between a retracted position and an engaged position.
- Another object of the present invention is to present a solution providing an easier and more cost effective activation of the engagement between the tool and the casing tubular, and which also fulfills the requirements of robustness and reliability.
- Another object of the invention is to provide an engagement mechanism that may be easily released, both in normal operations and in case of certain mechanical malfunctioning.
- the invention concerns a casing tool for connecting casing tubulars using a top drive.
- the casing tool comprises a top cover that may be connected either releasably or non-releasably to the top drive and an elongated inner body that may be connected releasingly to the top cover.
- the inner body displays a longitudinally directed through-going channel, preferably with a gasket near one of its longitudinal ends, and comprises a first longitudinal part slideably arranged within the top cover and a second longitudinal part that may be guided into a casing tubular.
- the casing tool further comprises a first sleeve arranged concentric and axial displaceable along at least part of the inner body at an axial distance (d) from the top cover, force transferring means for transferring a first external axial force (F 1 ) exerted on the top cover in directed towards the casing tubular at least partly to the first sleeve, at least one clamp connected radially displaceable to the first sleeve for engaging the inside wall of the casing tubular and radial displacement means extending at least partly along the second longitudinal part of the inner body for imparting radial displacement of at least one of the at least one clamp during relative axial displacement of the first sleeve and the inner body.
- the first external axial force (F 1 ) is preferably exerted after an obstruction of axial displacement of the inner body relative to the casing tubular
- the casing tool further comprising a first impact means configured to abut the end of the casing tubing during insertion therein, where an obstruction of the axial displacement of the inner body relative to the casing tubular is ensured by connecting the first impact means to the inner body via the force transferring means, for example when the at least one clamp is in an engaging position.
- the first impact means may comprise a first impact face situated between the end of the first sleeve facing the top cover and the radial displacement means.
- the first impact means may be connected by connection means to an outer enclosure radially enclosing at least the end of the first sleeve facing the top cover and the force inducing means.
- the force transferring means comprises a second sleeve arranged adjacent to the end of the top cover facing the second longitudinal part and at least one locking means arranged in contact with the axial end of the first sleeve facing the top cover, wherein the force transferring means is configured so that an axial force on the second sleeve activates a mainly casing tubing directed axial displacement of the at least one locking means.
- the at least one locking means may comprise at least one pivot arm, where an axial force on the second sleeve causes a mainly outward oriented radial displacement of a first arm of the pivot arm and a mainly casing tubing directed axial force from the second arm of the pivot arm.
- the second arm may be either in direct or indirect contact with the first sleeve.
- the second sleeve may further comprise a third sleeve and an annular body connected to an axial end of the third sleeve facing the second longitudinal part and radially abutting a contact face of the first arm of at least one pivot arm, wherein the annular body comprises a radial projection configured to impose the outward directed radial displacement of the first arm during axial displacement of the second sleeve.
- the at least one locking means may comprise at least one lockable wheel and a lower sleeve, wherein an axial force on the second sleeve causes a release of the at least one lockable wheel and a mainly casing tubing directed axial force from the lower sleeve.
- the first sleeve comprises an inner tubing extending at least across the radial displacement means situated on the inner body and a flange or collar connected to the end of the inner tubing facing the top cover.
- the outer diameter of the flange is larger than the outer diameter of the inner tubing.
- the first sleeve displays at least one clamp fitting recess, wherein each recess is configured to allow its corresponding clamp to be displaced in the radial direction only after assembly.
- the radial displacement means comprises at least one first tapered face.
- the at least one of the at least one clamp may comprise at least one second tapered face facing the at least one first tapered face.
- the axial end of the top cover facing the second longitudinal part and the axial end of the force transferring means facing the top cover, for example the axial end of the third sleeve are configured as interacting cam bodies allowing interconnection by rotation.
- This interconnection may for example be obtained by exerting an external axial force (F) that causes the contact face of the first arm to supersede the radial projection.
- the interacting cam bodies are advantageously configured to allow a top cover directed axial displacement of the second sleeve when the interacting cam bodies are rotated into the interconnected state and a third external axial force (F 3 ) directed towards the casing tubing is exerted on the top cover.
- This axial displacement of the second sleeve causes the at least one clamp to release the radial force on the casing tubular set up by the radial displacement during engagement.
- the displacement may cause the second sleeve to axially disconnect from the at least one pivot arm.
- the casing tool further comprising at least one second sleeve connected release mechanism configured to allow a top cover directed axial displacement of the second sleeve.
- the axial displacement may cause the second sleeve to disconnect from the at least one pivot arm.
- the invention also concerns a method using a casing tool in accordance with the above mentioned characteristics.
- the method comprising the following steps:
- the method may further comprise the step:
- FIG. 1 is a perspective view of the casing tool in accordance with a first embodiment of the invention showing the tool in engaged position
- FIG. 2 is a radial view of the casing tool in accordance with FIG. 1 showing the engaged tool inserted into a casing tubular
- FIG. 3 is a cross sectional view of the casing tool along section A-A of FIG. 2 ,
- FIG. 4 is a radial view of the casing tool in accordance with FIG. 1 with the outer enclosure removed
- FIG. 5 is a cross sectional view of the casing tool along section A-A of FIG. 4 .
- FIG. 6 is a cross sectional view of the casing tool along section B-B of FIG. 5 .
- FIG. 7 is a cross sectional view of the casing tool along section C-C of FIG. 5 .
- FIG. 8 is a cross sectional view of the casing tool in accordance with the invention, showing the end of the tool inserted into the casing tubular,
- FIG. 9 is a schematic view showing the principals of converting axial displacement of the dies into radial displacement using tapered faces, wherein FIG. 9( a ) is showing the initial engagement due to movement of the die and FIG. 9( b ) is showing the additional engagement due to opposite directed tensioning of the inner body,
- FIG. 10 is a radial view of the casing tool in accordance with a second embodiment of the invention showing the tool in engaged position
- FIG. 11 is a cross sectional view of the casing tool along section A-A of FIG. 10 .
- FIG. 12 is a cross sectional view of the casing tool along a section perpendicular to section A-A of FIG. 10 relative to the tools axial axis and
- FIG. 13 is a cross section view of the casing tool along a section D-D of FIG. 12 .
- FIG. 1 shows one embodiment of the casing tool 1 in a perspective view
- FIGS. 2 and 3 show the same casing tool 1 as in FIG. 1 in a radial view and a cross sectional view along section A-A, respectively, after completing an engaging insertion into a casing tubular 4 .
- upper and lower signify the orientation from and to the casing tubular 4 , respectively.
- outward and inward signify the radial orientation from and to the center of the tool 1 , respectively.
- the particular embodiment of the inventive tool 1 comprises the following main components:
- top components comprising the top drive part 2 , the upper cam body 18 , the upper impact piece 20 , the lock ring 21 and the upper gear teeth 42 form an assembly called a top cover 100 .
- mid components comprising lower cam body 16 , the lower gear teeth 40 , the annular spring 14 , 14 ′ and the pivot arms 12 form an assembly called a force transferring means 200 .
- the tool 1 is lowered into the casing tubular 4 , 5 until its threaded part 5 abuts the lower impact piece 10 , the latter being fixed to the outer enclosure 3 .
- the abutting impact piece 10 prevents any downward axial displacement of the inner tubular 6 since the bulge 14 ′ in the annular spring 14 is located above a contacting face 15 at the end of the long arm 12 ′ of each pivot arm 12 .
- the end of the short arm 12 ′′ below the pivot point bolt 13 is contacting the upper axial face of the sleeve's 8 flange 11 , the latters being arranged concentrically around the inner tubular 6 .
- die recesses configured to allow only radial displacements of the dies 34 when installed.
- both the initial clamping and the additional clamping are performed without any rotational movements of the tool 1 .
- Release of the tool 1 from the casing tubular 4 may be achieved by lowering the top drive part 2 and the upper cam body 18 applying a downward directed force, while enforcing a counterclockwise rotation.
- the latter rotation forms an interconnection between the upper cam body 18 and the lower cam body 16 in contrast to simple impact 32 in absence of rotation.
- upper cams 33 with upward directed inclined planes 37 at the lower part of the upper cam body 18 are meshing with corresponding inclined planes 37 ′ on the upper part of the lower cam body 16 , thereby lifting the latter axially upwards. Due to the axial displacement of the now interconnected bodies 16 , 18 the long pivot arm 12 ′ looses its grip with the annular spring 14 , thus releasing the tool 1 from the casing tubular 4 .
- Upper gear teeth 42 arranged between the top drive part 2 and the upper cam body 18 are configured to mesh with the top drive part 2 when impact 30 exists (or about to take place) between the upper cam body 18 and the upper impact piece 20 , i.e. when the top drive part 2 is in its upper position. Further, arrangement of the first cam springs 26 ensure that such an impact 30 prevails in the absence of downward directed axial force (F).
- the impact piece 20 may be fixed by a locking ring 21 .
- the second cam springs 17 ensure positioning of the top drive part 2 relative to the lower cam body 16 .
- the tool 1 may be arranged with pivoting levers 35 connected underneath the lower cam body 16 in one end and sheaves/plates 31 fixed by bolts 34 at the other end.
- the plates 31 are fastened to the outer enclosure 3 by screws.
- dedicated release or lever screws 23 are inserted so that the pivoting levers 35 pivots around the bolts 34 , thereby pressing the lower arm radially inwards and the higher arm axially upwards.
- the lower cam body 16 experiences thus a corresponding axially displacement, thereby releasing the annular spring 14 from the pre-tensioning long arm 12 ′.
- the further mechanisms are identical to the regular release described above.
- FIG. 8 shows the axially displaceable sleeve 8 , the radially displaceable dies 34 , the engagement means 9 , 9 ′, 9 ′′ and the rubber gasket 7 in further details.
- the displaced mirror configurations of the zigzag patterns constituting the engagement means is apparent. Due to the sliding action on each or some of the tapered surfaces any axial displacement of either the lower tubular 6 ′′ or the sleeve 8 results in a radial displacement of the dies 34 . The same effect is achieved by any relative axial displacement between these two objects 6 ′′. 8 .
- the principle of converting axial displacement of the dies 34 into radial displacement using tapered faces is better illustrated in FIGS. 9( a ) and 9( b ) .
- FIGS. 10-13 illustrate a second embodiment of the inventive casing tool 1 , where FIG. 10 shows the casing tool inserted into a casing as viewed in a radial direction. Further, FIGS. 11 and 12 shows a cross sectional view along a section A-A of FIG. 10 and a cross sectional view along a section perpendicular to section A-A relative to the axial axis, respectively, and FIG. 13 shows a cross sectional view along a section D-D of FIG. 12 .
- the second embodiment of the inventive tool 1 comprises the following main components:
- the top components comprising the top drive part 2 , the upper cam body 18 , the upper impact piece 20 , the lock ring 21 and the upper gear teeth 42 form the assembly called the top cover 100 .
- the mid components comprising lower cam body 16 , the lower gear teeth 40 , the mid sleeve 51 , the releasable wheels 52 , the triangular brackets 53 , the lower sleeve 54 , the elongated brackets 55 , the inner tubular flange 56 and the lower sleeve springs 56 form the assembly called the force transferring means 200 .
- the tool 1 is lowered into the casing tubular 4 , 5 until its threaded part 5 abuts the lower impact piece 10 .
- the abutting impact piece 10 prevents any downward axial displacement of the inner tubular 6 since the impact piece 10 is coupled to the inner tubular 6 by the screws 57 and also to the lower cam body by the locked wheels 52 .
- Exertion of axial forces on the tool 1 in direction of the casing tubular 4 , 5 cause corresponding axial displacements of the top drive part 2 , the upper impact piece 20 and upper cam body 18 .
- the upper cam body 18 will impact the lower cam body 16 in an impact area 32 , causing an axial force to be exerted also on the latter 16 .
- the force will release the wheel 52 which again causes the lower end of the lower cam body to impart downward directed pressure on the inner tubular flange 56 . Further, the inner tubular flange 56 abuts the lower sleeve 54 , creating the axial pressure on the flange 11 and thus the zigzag pattern induced radial displacement of the dies 34 .
- both the initial pre-tensioning clamping and the additional clamping are performed without any rotational movements of the tool 1 .
- Release of the tool 1 from the casing tubular 4 may be achieved by lowering the top drive part 2 and the upper cam body 18 applying a downward directed force, and subsequently enforcing a counterclockwise (or alternatively clockwise) rotation.
- the latter rotation forms an interconnection between the upper cam body 18 and the lower cam body 16 in contrast to simple impact 32 in absence of rotation.
- upper cams 33 with upward directed inclined planes 37 at the lower part of the upper cam body 18 are meshing with corresponding inclined planes 37 ′ on the upper part of the lower cam body 16 , thereby lifting the latter axially upwards (see FIG. 4 ).
- the component constituting the force transferring means 200 releases the pressure on the flange 11 causing a further spring induced 25 , 58 release of the dies 34 from the casing tubular 4 , 5 .
- Upper gear teeth 42 may be arranged between the top drive part 2 and the upper cam body 18 that are configured to mesh with the top drive part 2 when impact 30 exists (or about to take place) between the upper cam body 18 and the upper impact piece 20 (see FIG. 5 ), i.e. when the top drive part 2 is in its upper position. Further, arrangement of the first cam springs 26 ensure that such an impact 30 prevails in the absence of downward directed axial force (F).
- the second cam springs 17 ensure positioning of the top drive part 2 relative to the lower cam body 16 .
- the tool 1 may be arranged with dedicated release screws 23 fastened underneath the flange 11 , going through dedicated holes in the lower sleeve 54 .
- the release screws 23 By inserting suitable tools into aligned passages 60 into the lower impact access is gained to the release screws 23 .
- a Clockwise directed turns of these screws 23 cause the screw ends to abut underneath the inner tubular flange 56 , which again causes an upwards movement of the component constituting the force transferring means 200 and the inner tubing 6 .
- the further mechanisms are identical to the regular release described above.
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Abstract
The invention concerns a casing tool and a method for connecting casing tubulars using a top drive. The casing tool comprises a top cover that may be connected either releasably or non-releasably to the top drive and an elongated inner body that may be connected releasingly to the top cover. The inner body displays a longitudinally directed through-going channel, preferably with a gasket near one of its longitudinal ends, and comprises a first longitudinal part slideably arranged within the lop cover and a second longitudinal part that may be guided into a casing tubular. One or more radially displaceable clamps is connected to the lower part of the casing tool for engaging the inside wall of the casing tubular. The radial displacement of the clamps is achieved by use of radial displacement means.
Description
- The present invention concerns a casing tool and a method for connecting casing tubulars using a top drive as disclosed in the introductory part of the main claims. More specifically the invention concerns at casing tool that may be releasably fixed to a top drive in a drilling derrick for interconnecting casing tubulars, i.e. casings inserted into drilling holes for hydrocarbon productions.
- Particularly in oil and gas industry, sections of casing tubulars are being interconnected and inserted into a borehole to achieve the extended length of the borehole lining. To avoid that the interconnected casing string falls into the well while adding a new section, the slips of a spider located on the floor of the drilling platform are often used. The new section or stand of casing is then moved from a rack to the well centre above the spider. The treaded pin of the section of casing tubular to be connected is then located over the threaded box of the casing in the well and the connection is made up by rotation there between. An elevator is then connected to the top of the new section and the whole casing string is lifted slightly to enable the slips of the spider to be released. The whole casing string is then lowered until the top of the section is adjacent the spider whereupon the slips of the spider are re-applied, the elevator disconnected and the process repeated.
- It is well known to use a power tong or similar turning means to torque the connection up to a predetermined torque in order to make the connection. These turning means located on the platform, either on rails, or hung from a drilling derrick on a chain, constitute often large and complex machineries which require a considerable amount of space and maintenance.
- In the last decades use of top drive has been common in order to perform the interconnection of casing tubulars with sufficient torque strength. This type of operations requires the use of a dedicated tool that may connect to the top drive in one longitudinal end and may engage with the casing tubular at the other end so that the casing tubular can be rotated and lifted/lowered in to/out of the bore hole. An example of connecting tubular sections using a top drive and a corresponding casing tool is disclosed in publication WO 00/05483. This casing tool comprises a plurality of gripping elements that are radially displaceable by hydraulic or pneumatic fluid in order to drivingly engage the tubular section. This again permits a screw connection between the engaged tubular section and a further tubular section with the required torque. Another example of a top drive and a casing tool is found in publication WO 2006/116870 A1 disclosing a casing tool comprising a body assembly and a gripping assembly with a grip surface adapted to move from a retracted position to an engaged position to radially engage a work piece in response to relative axial displacement, the latter being activated by relative rotation within the tool. Further, publication U.S. Pat. No. 8,454,066 B2 discloses a tool for moving rigid spokes arranged in close fitting relation with spike guides on an annular body to allow for radial movements only between a retracted position and an engaged position.
- Common for the prior art casing tools of the type described above is the use of either hydraulic or pneumatic fluid or relative rotation within the tool, in order to initiate and complete the process of engaging the tool to the casing tubular. This increases the complexity of the tool, thus releasing important undesired aspects such as higher production cost and higher degree of maintenance.
- There is therefore a need to mitigate the disadvantages with the existing systems and to reduce the investments in extra equipment.
- It is thus an object of the present invention to present a solution providing an easier and more cost effective activation of the engagement between the tool and the casing tubular, and which also fulfills the requirements of robustness and reliability. Another object of the invention is to provide an engagement mechanism that may be easily released, both in normal operations and in case of certain mechanical malfunctioning.
- The present invention is set forth and characterized in the main claims, while the dependent claims describe other characteristics of the invention.
- In particular, the invention concerns a casing tool for connecting casing tubulars using a top drive. The casing tool comprises a top cover that may be connected either releasably or non-releasably to the top drive and an elongated inner body that may be connected releasingly to the top cover. The inner body displays a longitudinally directed through-going channel, preferably with a gasket near one of its longitudinal ends, and comprises a first longitudinal part slideably arranged within the top cover and a second longitudinal part that may be guided into a casing tubular.
- The casing tool further comprises a first sleeve arranged concentric and axial displaceable along at least part of the inner body at an axial distance (d) from the top cover, force transferring means for transferring a first external axial force (F1) exerted on the top cover in directed towards the casing tubular at least partly to the first sleeve, at least one clamp connected radially displaceable to the first sleeve for engaging the inside wall of the casing tubular and radial displacement means extending at least partly along the second longitudinal part of the inner body for imparting radial displacement of at least one of the at least one clamp during relative axial displacement of the first sleeve and the inner body. The first external axial force (F1) is preferably exerted after an obstruction of axial displacement of the inner body relative to the casing tubular
- In a preferred embodiment the casing tool further comprising a first impact means configured to abut the end of the casing tubing during insertion therein, where an obstruction of the axial displacement of the inner body relative to the casing tubular is ensured by connecting the first impact means to the inner body via the force transferring means, for example when the at least one clamp is in an engaging position. The first impact means may comprise a first impact face situated between the end of the first sleeve facing the top cover and the radial displacement means. Furthermore, the first impact means may be connected by connection means to an outer enclosure radially enclosing at least the end of the first sleeve facing the top cover and the force inducing means.
- In another preferred embodiment the force transferring means comprises a second sleeve arranged adjacent to the end of the top cover facing the second longitudinal part and at least one locking means arranged in contact with the axial end of the first sleeve facing the top cover, wherein the force transferring means is configured so that an axial force on the second sleeve activates a mainly casing tubing directed axial displacement of the at least one locking means.
- The at least one locking means may comprise at least one pivot arm, where an axial force on the second sleeve causes a mainly outward oriented radial displacement of a first arm of the pivot arm and a mainly casing tubing directed axial force from the second arm of the pivot arm. The second arm may be either in direct or indirect contact with the first sleeve. The second sleeve may further comprise a third sleeve and an annular body connected to an axial end of the third sleeve facing the second longitudinal part and radially abutting a contact face of the first arm of at least one pivot arm, wherein the annular body comprises a radial projection configured to impose the outward directed radial displacement of the first arm during axial displacement of the second sleeve.
- Alternatively the at least one locking means may comprise at least one lockable wheel and a lower sleeve, wherein an axial force on the second sleeve causes a release of the at least one lockable wheel and a mainly casing tubing directed axial force from the lower sleeve.
- In another preferred embodiment the first sleeve comprises an inner tubing extending at least across the radial displacement means situated on the inner body and a flange or collar connected to the end of the inner tubing facing the top cover. The outer diameter of the flange is larger than the outer diameter of the inner tubing.
- In another preferred embodiment the first sleeve displays at least one clamp fitting recess, wherein each recess is configured to allow its corresponding clamp to be displaced in the radial direction only after assembly.
- In another preferred embodiment the radial displacement means comprises at least one first tapered face. Furthermore, the at least one of the at least one clamp may comprise at least one second tapered face facing the at least one first tapered face.
- In another preferred embodiment the axial end of the top cover facing the second longitudinal part and the axial end of the force transferring means facing the top cover, for example the axial end of the third sleeve, are configured as interacting cam bodies allowing interconnection by rotation. This interconnection may for example be obtained by exerting an external axial force (F) that causes the contact face of the first arm to supersede the radial projection. The interacting cam bodies are advantageously configured to allow a top cover directed axial displacement of the second sleeve when the interacting cam bodies are rotated into the interconnected state and a third external axial force (F3) directed towards the casing tubing is exerted on the top cover. This axial displacement of the second sleeve causes the at least one clamp to release the radial force on the casing tubular set up by the radial displacement during engagement. For example, the displacement may cause the second sleeve to axially disconnect from the at least one pivot arm.
- In another preferred embodiment the casing tool further comprising at least one second sleeve connected release mechanism configured to allow a top cover directed axial displacement of the second sleeve. For example, the axial displacement may cause the second sleeve to disconnect from the at least one pivot arm.
- The invention also concerns a method using a casing tool in accordance with the above mentioned characteristics. The method comprising the following steps:
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- inserting the second longitudinal part of the inner body a predetermined length into the casing tubular, the length being set by a first impact means connected to the inner body to hinder axial displacement of the inner body relative to the casing tubular and
- exerting a first casing tubular directed external axial force (F1) on the top cover causing equally directed axial displacements of the top cover, the first sleeve and the at least one clamp,
- whereby engagement of the casing tool with the casing tubular is achieved by interaction with the radial displacement means imparting radial displacement of at least one of the at least one clamp during said axial displacements.
- In other to achieve an additional engagement of the at least one of the at least on clamp the method may further comprise the step:
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- releasing the first casing tubular directed external axial force (F1) on the top cover,
- exerting a second external axial force (F2) directed opposite to the first external axial force (F1),
- thereby exerting a second external axial force directed tension on the inner body, creating an increase in the relative axial force between the dies and the inner body.
- To release the engagement between the casing tool and the casing tubular the following steps may be performed:
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- exerting a third external axial force (F3) on the top cover in direction of the casing tubular causing equally directed axial displacements,
- rotating the top cover (either subsequent to the axial displacement or simultaneously), thereby achieving an interconnected assembly comprising the top cover, the second sleeve and the inner body and
- raising the assembly, causing a top cover directed axial displacement of the first sleeve and the at least one clamp. The latter step releases the engagement of the clamp(s) by interaction with the radial displacement means.
- An alternative or additional way of releasing the engagement between the casing tool and the casing tubular is obtained by performing the following step:
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- activating at least one second sleeve connected release mechanism causing a top cover directed axial displacement of the first sleeve and at least one of the at least one clamp, thereby releasing the engagement between the casing tool and the casing tubular through interaction with the radial displacement means.
- In the following description, numerous specific details are introduced to provide a thorough understanding of embodiments of the claimed tool and method. One skilled in the relevant art, however, will recognize that these embodiments can be practiced without one or more of the specific details, or with other components, systems, etc. In other instances, well-known structures or operations are not shown, or are not described in detail, to avoid obscuring aspects of the disclosed embodiments.
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FIG. 1 is a perspective view of the casing tool in accordance with a first embodiment of the invention showing the tool in engaged position, -
FIG. 2 is a radial view of the casing tool in accordance withFIG. 1 showing the engaged tool inserted into a casing tubular, -
FIG. 3 is a cross sectional view of the casing tool along section A-A ofFIG. 2 , -
FIG. 4 is a radial view of the casing tool in accordance withFIG. 1 with the outer enclosure removed, -
FIG. 5 is a cross sectional view of the casing tool along section A-A ofFIG. 4 , -
FIG. 6 is a cross sectional view of the casing tool along section B-B ofFIG. 5 , -
FIG. 7 is a cross sectional view of the casing tool along section C-C ofFIG. 5 , -
FIG. 8 is a cross sectional view of the casing tool in accordance with the invention, showing the end of the tool inserted into the casing tubular, -
FIG. 9 is a schematic view showing the principals of converting axial displacement of the dies into radial displacement using tapered faces, whereinFIG. 9(a) is showing the initial engagement due to movement of the die andFIG. 9(b) is showing the additional engagement due to opposite directed tensioning of the inner body, -
FIG. 10 is a radial view of the casing tool in accordance with a second embodiment of the invention showing the tool in engaged position, -
FIG. 11 is a cross sectional view of the casing tool along section A-A ofFIG. 10 , -
FIG. 12 is a cross sectional view of the casing tool along a section perpendicular to section A-A ofFIG. 10 relative to the tools axial axis and -
FIG. 13 is a cross section view of the casing tool along a section D-D ofFIG. 12 . - In the following to different embodiments will be disclosed, where both embodiments are based on the following general concept (see for example
FIGS. 1-4 andFIGS. 10-12 ): After inserting atool 1 into thecasing tubular 4,5 the dies 34 on thesleeve 8 engage the inner wall of the lower tubular 6″ by relative (non-rotational) axial displacements of thezigzag patterns fluid channel 27 and therubber gasket 7 allows leak free circulation of fluid, rendering fluid flow into thecasing tubular 4,5 possible. A subsequent upward directed force strengthens this die engagement. Release of thetool 1 from thecasing 4,5 may be performed by a combination of axial force and rotational force. -
FIG. 1 shows one embodiment of thecasing tool 1 in a perspective view, whileFIGS. 2 and 3 show thesame casing tool 1 as inFIG. 1 in a radial view and a cross sectional view along section A-A, respectively, after completing an engaging insertion into a casing tubular 4. In the following the terms upper and lower signify the orientation from and to the casing tubular 4, respectively. Furthermore, the terms outward and inward signify the radial orientation from and to the center of thetool 1, respectively. - With reference to
FIGS. 2-7 the particular embodiment of theinventive tool 1 comprises the following main components: -
- a
top drive part 2 having upper threads in order to connect to a top drive (not shown), - an
upper cam body 18 and alower cam body 16, whichbodies -
lower threads 29 for connecting thetop drive part 2 and theupper cam body 18, - an inner tubular 6 comprising an upper tubular 6′ situated mainly within the
top drive part 2 and theupper cam body 18 and a lower tubular 6″ situated mainly within the casing tubular 4 after complete engagement, - a through-going
fluid channel 27 extending throughout the entire length of the inner body 6, - an upper impact piece 20 (
FIG. 5 ) connected to the upper tubular 6′ with alock ring 21 and situated within an annular cavity formed by thetop drive part 2, theupper cam body 18 and the upper tubular 6′, - upper gear teeth 42 (
FIG. 6 ) surrounding the upper tubular 6′ and situated within a cavity formed by thetop drive part 2 and the upper tubular 6′, - lower gear teeth 40 (
FIG. 7 ) surrounding the inner tubular 6 and situated within thelower cam body 16, - first cam springs 26 interconnecting the upper and
lower cam bodies - second cam springs 17 interconnecting the
lower cam bodies 16 and thetop drive part 2, - an
annular spring protrusion 14′, - a
lower impact piece 10 configured to abut the threadedpart 5 of thecasing tubular 4,5 after insertion, - a plurality of
pivot arms 12 comprising along arm 12′, ashort arm 12″ and a pivot point in form of abolt 13 fixed to thelower impact piece 10, - a
sleeve 8 having aflange 11 at its upper end and die recesses at its lower end, - flange springs 25 interconnecting the
lower impact piece 10 and theflange 11, - an
outer enclosure 3 fixed to thelower impact piece 10 byscrews 24 and surrounding the above mentioned components up to thetop drive part 2, - a plurality of dies 34 arranged within the die recesses, where each die 34 comprises an elastomeric contacting
face 19 at its outward directed radial surface and adie zigzag pattern 9″ at its inward directed radial surface, - tubular
zigzag pattern 9′ at the outer wall of the lower tubular 6″, wherein the tubularzigzag pattern 9′ and thedie zigzag pattern 9″ form mirror patterns, -
rubber gasket 7 arranged below the dies 34 ensuring a fluid tight seal between the inner wall of the casing tubular 4 and the lower tubular 6″, - tilting levers 35 connected at one end underneath the
lower cam body 16 and at the other end tosheaves 31 viabolt connections 22 and - lever screws 23 situated in the
sheaves 31.
- a
- The top components comprising the
top drive part 2, theupper cam body 18, theupper impact piece 20, thelock ring 21 and theupper gear teeth 42 form an assembly called atop cover 100. Further, the mid components comprisinglower cam body 16, thelower gear teeth 40, theannular spring pivot arms 12 form an assembly called a force transferring means 200. - Initially the
tool 1 is lowered into thecasing tubular 4,5 until its threadedpart 5 abuts thelower impact piece 10, the latter being fixed to theouter enclosure 3. In this starting position theabutting impact piece 10 prevents any downward axial displacement of the inner tubular 6 since thebulge 14′ in theannular spring 14 is located above a contactingface 15 at the end of thelong arm 12′ of eachpivot arm 12. Further, the end of theshort arm 12″ below thepivot point bolt 13 is contacting the upper axial face of the sleeve's 8flange 11, the latters being arranged concentrically around the inner tubular 6. In the lower half of thesleeve 8 there are arranged die recesses configured to allow only radial displacements of the dies 34 when installed. - In this particular starting position exertion of axial forces on the
tool 1 cause corresponding axial displacements of thetop drive part 2, theupper impact piece 20 andupper cam body 18. In absence of any rotation theupper cam body 18 will impact thelower cam body 16 in an impact point 32 (FIG. 4 ), causing an axial force to be exerted also on thelower cam body 16 and the connectedannular spring 14. If this latter force is sufficient to overcome the radial spring force exerted by thelong arm 12′ on theannular spring 14, thebulge 14′ will move thearm 12′ radially outwards. An axial pressure is thus imparted on theflange 11 by theshort arm 12″ causing thesleeve 8 and the attached dies 34 to be axially displaced. Finally, the mirroredzigzag patterns lower gear teeth 40 ensure that thelower cam body 16 is only displaced in the axial direction. Flange springs 25 may be arranged between theflange 11 and thelower impact piece 10 in order to re-position thesleeve 8 and theflange 11 when the dies 34 are released from the inner tubular 6. - When the contacting
surface 15 of thelong arm 12′ has passed the center of thebulge 14′ thepivot arms 12 are in a locked position relative to theannular spring 14, thelower cam body 16 and the inner tubular 6. In absence of any rotation theupper cam body 18 and thetop drive part 2 may in this pre-tensioning situation be lifted up until impact occurs between theupper cam body 18 and theupper impact piece 20. Exertion of any further upwards directed force would thus be transferred to the lower tubular 6″, causing a larger axial force and thus an additional clamping/tensioning force onto the inner walls of the casing tubular 4 from the dies 34. - It is emphasized that both the initial clamping and the additional clamping are performed without any rotational movements of the
tool 1. - Release of the
tool 1 from the casing tubular 4 may be achieved by lowering thetop drive part 2 and theupper cam body 18 applying a downward directed force, while enforcing a counterclockwise rotation. The latter rotation forms an interconnection between theupper cam body 18 and thelower cam body 16 in contrast tosimple impact 32 in absence of rotation. During rotationupper cams 33 with upward directedinclined planes 37 at the lower part of theupper cam body 18 are meshing with correspondinginclined planes 37′ on the upper part of thelower cam body 16, thereby lifting the latter axially upwards. Due to the axial displacement of the nowinterconnected bodies long pivot arm 12′ looses its grip with theannular spring 14, thus releasing thetool 1 from the casing tubular 4.Upper gear teeth 42 arranged between thetop drive part 2 and theupper cam body 18 are configured to mesh with thetop drive part 2 whenimpact 30 exists (or about to take place) between theupper cam body 18 and theupper impact piece 20, i.e. when thetop drive part 2 is in its upper position. Further, arrangement of the first cam springs 26 ensure that such animpact 30 prevails in the absence of downward directed axial force (F). Theimpact piece 20 may be fixed by a lockingring 21. The second cam springs 17 ensure positioning of thetop drive part 2 relative to thelower cam body 16. - To be able to release the
tool 1 manually, e.g. in case of any loss of rotational freedom between the twocam bodies tool 1 may be arranged with pivotinglevers 35 connected underneath thelower cam body 16 in one end and sheaves/plates 31 fixed bybolts 34 at the other end. Theplates 31 are fastened to theouter enclosure 3 by screws. To manually release thetool 1 dedicated release or lever screws 23 are inserted so that the pivoting levers 35 pivots around thebolts 34, thereby pressing the lower arm radially inwards and the higher arm axially upwards. Thelower cam body 16 experiences thus a corresponding axially displacement, thereby releasing theannular spring 14 from the pre-tensioninglong arm 12′. The further mechanisms are identical to the regular release described above. -
FIG. 8 shows the axiallydisplaceable sleeve 8, the radially displaceable dies 34, the engagement means 9,9′,9″ and therubber gasket 7 in further details. The displaced mirror configurations of the zigzag patterns constituting the engagement means is apparent. Due to the sliding action on each or some of the tapered surfaces any axial displacement of either the lower tubular 6″ or thesleeve 8 results in a radial displacement of the dies 34. The same effect is achieved by any relative axial displacement between these two objects 6″.8. The principle of converting axial displacement of the dies 34 into radial displacement using tapered faces is better illustrated inFIGS. 9(a) and 9(b) . For the sake of clarity only one taperedsurface 9′ on the lower tubular 6″ and only one contacting taperedsurface 9″ on thedie 34 is shown. When thesleeve 8 is displaced downward (in direction towards the casing tubular), thetapered surface 9″ glides on the mirrored taperedsurface 9′, thereby pressing the contactinglayer 19 of the die 34 towards the inside wall of the casing tubular 4 (seeFIG. 9(a) ). Likewise, when the inner tubular 6 experiences a force directed towards the top drive, thetapered surface 9′ glides on thetapered surface 9″, causing an equally directed pressing of the contactinglayer 19 towards the inner wall of the casing tubular 4 (seeFIG. 9(b) ). The situation shown inFIGS. 9(a) and (b) corresponds to the pre-tensioning force and the additional tensioning force described above. -
FIGS. 10-13 illustrate a second embodiment of theinventive casing tool 1, whereFIG. 10 shows the casing tool inserted into a casing as viewed in a radial direction. Further,FIGS. 11 and 12 shows a cross sectional view along a section A-A ofFIG. 10 and a cross sectional view along a section perpendicular to section A-A relative to the axial axis, respectively, andFIG. 13 shows a cross sectional view along a section D-D ofFIG. 12 . - The second embodiment of the
inventive tool 1 comprises the following main components: -
- a
top drive part 2 having threads in order to connect to a top drive (not shown), - an
upper cam body 18 and alower cam body 16, whichbodies - an inner tubular 6 comprising an upper tubular 6′ situated mainly within the
top drive part 2 and theupper cam body 18 and a lower tubular 6″ situated mainly within the casing tubular 4 after complete engagement, - a through-going
fluid channel 27 extending throughout the entire length of the inner body 6, - an
upper impact piece 20 connected to the upper tubular 6′ with alock ring 21 and situated within an annular cavity formed by thetop drive part 2, theupper cam body 18 and the upper tubular 6′, -
upper gear teeth 42 surrounding the upper tubular 6′ and situated within a cavity formed by thetop drive part 2 and the upper tubular 6′, - lower gear teeth 40 (corresponding to
FIG. 7 of embodiment 1) surrounding the inner tubular 6 and situated within thelower cam body 16, - first cam springs 26 interconnecting the upper and
lower cam bodies - a
mid sleeve 51 surrounding the inner tubular 6 and thelower cam body 16, - a
lower impact piece 10 fixed by screws 59 to themid sleeve 51 and configured to abut the threadedpart 5 of thecasing tubular 4,5 after insertion, - second cam springs 17 interconnecting the
mid sleeve 51 and thetop drive part 2, -
releasable wheels 52 situated within recesses along the radial surface of thelower cam body 16, -
triangular brackets 53 fixed to the releasable wheels, - a
lower sleeve 54 surrounding the inner tubular 6 underneath thelower cam body 16, - elongated brackets 55 fixed to the
triangular brackets 53 in a first longitudinal end and to thelower sleeve 54 in a second longitudinal end, - a
sleeve 8 having aflange 11 at its upper end and die recesses at its lower end, - an inner
tubular flange 56 radially extending from the inner tubular 6 between thelower cam body 16 and theflange 11, wherein the innertubular flange 56 is fixed to themid sleeve 51 byscrews 57, - lower sleeve springs 58 interconnecting the
flange 11 and thelower sleeve 54. - flange springs 25 interconnecting the
lower impact piece 10 and theflange 11, - a plurality of dies 34 arranged within the die recesses, where each die 34 comprises an elastomeric contacting
face 19 at its outward directed radial surface and adie zigzag pattern 9″ at its inward directed radial surface, - tubular
zigzag pattern 9′ at the outer wall of the lower tubular 6″, wherein the tubularzigzag pattern 9′ and thedie zigzag pattern 9″ form mirror patterns, -
rubber gasket 7 arranged below the dies 34 ensuring a fluid tight seal between the inner wall of the casing tubular 4 and the lower tubular 6″, and - lever screws 23 having one end fixed with their screw head situated underneath the
flange 11 and the other end arranged underneath the innertubular flange 56.
- a
- As for the first embodiment the top components comprising the
top drive part 2, theupper cam body 18, theupper impact piece 20, thelock ring 21 and theupper gear teeth 42 form the assembly called thetop cover 100. Further, the mid components comprisinglower cam body 16, thelower gear teeth 40, themid sleeve 51, thereleasable wheels 52, thetriangular brackets 53, thelower sleeve 54, the elongated brackets 55, the innertubular flange 56 and the lower sleeve springs 56 form the assembly called the force transferring means 200. - Initially the
tool 1 is lowered into thecasing tubular 4,5 until its threadedpart 5 abuts thelower impact piece 10. In this starting position theabutting impact piece 10 prevents any downward axial displacement of the inner tubular 6 since theimpact piece 10 is coupled to the inner tubular 6 by thescrews 57 and also to the lower cam body by the lockedwheels 52. Exertion of axial forces on thetool 1 in direction of thecasing tubular 4,5 cause corresponding axial displacements of thetop drive part 2, theupper impact piece 20 andupper cam body 18. In absence of any rotation theupper cam body 18 will impact thelower cam body 16 in animpact area 32, causing an axial force to be exerted also on the latter 16. The force will release thewheel 52 which again causes the lower end of the lower cam body to impart downward directed pressure on the innertubular flange 56. Further, the innertubular flange 56 abuts thelower sleeve 54, creating the axial pressure on theflange 11 and thus the zigzag pattern induced radial displacement of the dies 34. The flange springs 25 and the lower sleeve springs 56 arranged between theflange 11 and thelower impact piece 10 and between theflange 11 and thelower sleeve 54, respectively, ensure re-positioning of thesleeve 8 and theflange 11 when the dies 34 are released from the inner tubular 6 (see below). - In absence of any rotation the
upper cam body 18 and thetop drive part 2 may in this pre-tensioning situation be lifted up until impact occurs between theupper cam body 18 and theupper impact piece 20. Exertion of any further upwards directed force would thus be transferred to the lower tubular 6, causing a larger axial force and thus an additional clamping force onto the inner walls of the casing tubular 4 from the dies 34 in the same way as for the first embodiment. - Note that both the initial pre-tensioning clamping and the additional clamping are performed without any rotational movements of the
tool 1. - Release of the
tool 1 from the casing tubular 4 may be achieved by lowering thetop drive part 2 and theupper cam body 18 applying a downward directed force, and subsequently enforcing a counterclockwise (or alternatively clockwise) rotation. The latter rotation forms an interconnection between theupper cam body 18 and thelower cam body 16 in contrast tosimple impact 32 in absence of rotation. During rotationupper cams 33 with upward directedinclined planes 37 at the lower part of theupper cam body 18 are meshing with correspondinginclined planes 37′ on the upper part of thelower cam body 16, thereby lifting the latter axially upwards (seeFIG. 4 ). Due to the axial displacement of the nowinterconnected bodies wheels 52 inside their respective recesses on thelower cam body 16, the component constituting the force transferring means 200 releases the pressure on theflange 11 causing a further spring induced 25,58 release of the dies 34 from thecasing tubular 4,5.Upper gear teeth 42 may be arranged between thetop drive part 2 and theupper cam body 18 that are configured to mesh with thetop drive part 2 whenimpact 30 exists (or about to take place) between theupper cam body 18 and the upper impact piece 20 (seeFIG. 5 ), i.e. when thetop drive part 2 is in its upper position. Further, arrangement of the first cam springs 26 ensure that such animpact 30 prevails in the absence of downward directed axial force (F). - The second cam springs 17 ensure positioning of the
top drive part 2 relative to thelower cam body 16. - To be able to release the
tool 1 manually, e.g. in case of any loss of rotational freedom between the twocam bodies tool 1 may be arranged with dedicated release screws 23 fastened underneath theflange 11, going through dedicated holes in thelower sleeve 54. By inserting suitable tools into alignedpassages 60 into the lower impact access is gained to the release screws 23. A Clockwise directed turns of thesescrews 23 cause the screw ends to abut underneath the innertubular flange 56, which again causes an upwards movement of the component constituting the force transferring means 200 and the inner tubing 6. The further mechanisms are identical to the regular release described above. - In the preceding description, various aspects of the apparatus according to the invention have been described with reference to the illustrative embodiment. For purposes of explanation, specific numbers, systems and configurations were set forth in order to provide a thorough understanding of the apparatus and its workings. However, this description is not intended to be construed in a limiting sense. Various modifications and variations of the illustrative embodiment, as well as other embodiments of the apparatus, which are apparent to persons skilled in the art to which the disclosed subject matter pertains, are deemed to lie within the scope of the present invention.
Claims (15)
1. A casing tool (1) for connecting casing tubulars (4,5) using a top drive, the casing tool (1) comprising
a top cover (100) connectable to the top drive and
an elongated inner body (6) connected releasingly to the top cover (100),
said inner body (6) comprising a first longitudinal part (6′) slideably arranged within the top cover (100) and a second longitudinal part (6″) guidable into a casing tubular (4,5),
characterized in that
the casing tool (1) further comprising
a first sleeve (8,11) arranged concentric and axial displaceable along at least part of the inner body (6) at an axial distance (d) from the top cover (100),
force transferring means (200) for transferring axially a first external axial force (F1) exerted on the top cover (100) at least partly to the first sleeve (8,11),
at least one clamp (34) connected radially displaceable to the first sleeve (8,11) for engaging the inside wall of the casing tubular (4,5) and
radial displacement means (9) extending at least partly along the second longitudinal part (6″) of the inner body (6) for imparting radial displacement on at least one of the at least one clamp (34) during relative axial displacement of the first sleeve (8,11) and the inner body (6).
2. The casing tool (1) in accordance with claim 1 ,
characterized in that the first external axial force (F1) being exerted after an obstruction of axial displacement of the inner body (6) relative to the casing tubular (4) during use.
3. The casing tool (1) in accordance with claim 1 or 2 ,
characterized in that the casing tool (1) further comprising
a first impact means (10) configured to abut the end of the casing tubing (4,5) during insertion therein,
where an obstruction of the axial displacement of the inner body (6) relative to the casing tubular (4) during use is ensured by connecting the first impact means (10) to the inner body (6) via the force transferring means (200).
4. The casing tool (1) in accordance with claim 3 , characterized in that the first impact means (10) comprising a first impact face (10′) situated between the end of the first sleeve (8,11) facing the top cover (100) and the radial displacement means (9).
5. The casing tool (1) in accordance with one of the preceding claims,
characterized in that the force transferring means (200) comprising
a second sleeve (14-17;16,51) adjacent to the end of the top cover (100) facing the second longitudinal part (6″) and
at least one locking means (12;52-58) arranged in contact with the axial end of the first sleeve (8,11) facing the top cover (100),
wherein the force transferring means (200) is configured to activate a mainly casing tubing directed axial displacement of the at least one locking means (12;52-58) when an axial force is exerted on the second sleeve (14-17;16,51).
6. The casing tool (1) in accordance with one of the preceding claims,
characterized in that the first sleeve (8,11) comprising
an inner tubing (8) extending at least across the radial displacement means (9′) situated on the inner body (6) and
a flange (11) connected to the end of the inner tubing (8) facing the top cover (100), the outer diameter of the flange (11) being larger than the outer diameter of the inner tubing (8).
7. The casing tool (1) in accordance with one of the preceding claims,
characterized in that the radial displacement means (9) comprising at least one first tapered face (9′).
8. Casing tool (1) in accordance with claim 7 ,
characterized in that the at least one of the at least one clamp (34) comprising at least one second tapered face (9″) facing the at least one first tapered face (9′).
9. Casing tool (1) in accordance with one of the preceding claims,
characterized in that the axial end (18) of the top cover (100) facing the second longitudinal part (6″) and the axial end of the force transferring means (200) facing the top cover (100) are configured as interacting cam bodies (18,16′) allowing interconnection by rotation.
10. Casing tool (1) in accordance with claim 9 ,
characterized in that the interacting cam bodies (18,16′) are configured to allow a top cover directed axial displacement of the second sleeve (14-17;16,51) when the interacting cam bodies (18,16′) are rotated into the interconnected state and a third external axial force (F3) is exerted on the top cover (100), wherein said axial displacement of the second sleeve (14-17;16,51) causes the at least one clamp (34) to release the radial force on the casing tubular (4,5) set up by any radial displacement.
11. Casing tool (1) in accordance with one of claims 5 -10 ,
characterized in that the casing tool (1) further comprising at least one second sleeve connected release mechanism (23,31,34,35;23,60) configured to allow a top cover directed axial displacement of the second sleeve (14-17;16,51).
12. Method using a casing tool (1) in accordance with one of claims 1 -11 , the method comprising the following steps:
inserting the second longitudinal part (6″) of the inner body (6) a predetermined length into the casing tubular (4,5), the length being set by a first impact means (10) connected to the inner body (6) to hinder axial displacement of the inner body (6) relative to the casing tubular (4,5) and
exerting a first casing tubular directed external axial force (F1) on the top cover (100) causing equally directed axial displacements of the top cover (100), the first sleeve (8,11) and the at least one clamp (34),
whereby engagement of the casing tool (1) with the casing tubular (4,5) is achieved by interaction with the radial displacement means (9) imparting radial displacement of at least one of the at least one clamp (34) during said axial displacements.
13. Method in accordance with claim 12 , characterized in that the method further comprising the step:
releasing the first casing tubular directed external axial force (F1) on the top cover (100),
exerting a second external axial force (F2) directed opposite to the first external axial force (F1), thereby exerting a second external axial force directed tension on the inner body (6) increasing the relative axial force between the clamp (34) and the inner body (6).
14. Method in accordance with claim 12 or 13 , characterized in that the method further comprising the step:
exerting a third external axial force (F3) on the top cover (100) in direction of the casing tubular (4,5) causing equally directed axial displacements of top cover (100) and rotating the top cover (100), thereby achieving an interconnected assembly comprising the top cover (100), the second sleeve (14-17;16,51) and the inner body (6) and
raising the assembly, causing a top cover directed axial displacement of the first sleeve (8,11) and the at least one clamp (34), thereby releasing the engagement between the casing tool (1) and the casing tubular (4,5) through interaction with the radial displacement means (9).
15. Method in accordance with one of claims 12 -14 , characterized in that the method further comprising the step:
activating at least one second sleeve connected release mechanism (23,31,34,35;23,60) causing a top cover directed axial displacement of the first sleeve (8,11) and at least one of the at least one clamp (34), thereby releasing the engagement between the casing tool (1) and the casing tubular (4,5) through interaction with the radial displacement means (9).
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NO20131716 | 2013-12-20 | ||
NO20131716A NO339203B1 (en) | 2013-12-20 | 2013-12-20 | Foringsrørverktøy |
PCT/EP2014/078846 WO2015092007A2 (en) | 2013-12-20 | 2014-12-19 | A casing tool |
Publications (1)
Publication Number | Publication Date |
---|---|
US20160319613A1 true US20160319613A1 (en) | 2016-11-03 |
Family
ID=52278633
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US15/104,542 Abandoned US20160319613A1 (en) | 2013-12-20 | 2014-12-19 | A casing tool |
Country Status (5)
Country | Link |
---|---|
US (1) | US20160319613A1 (en) |
EP (1) | EP3084113A2 (en) |
CA (1) | CA2934143A1 (en) |
NO (1) | NO339203B1 (en) |
WO (1) | WO2015092007A2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10287830B2 (en) * | 2016-11-14 | 2019-05-14 | Frank's International, Llc | Combined casing and drill-pipe fill-up, flow-back and circulation tool |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US11313183B2 (en) * | 2019-01-19 | 2022-04-26 | Noetic Technologies Inc. | Axial-load-actuated rotary latch release mechanisms for casing running tools |
CN110130831B (en) * | 2019-06-24 | 2024-03-01 | 重庆科技学院 | Top drive casing running device |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB9815809D0 (en) | 1998-07-22 | 1998-09-16 | Appleton Robert P | Casing running tool |
CA2512800C (en) * | 2001-03-22 | 2010-10-26 | Noetic Engineering Inc. | Method and apparatus for handling tubular goods |
ES2594626T3 (en) * | 2005-05-03 | 2016-12-21 | Noetic Technologies Inc. | Apprehension tool |
DE602006013702D1 (en) * | 2005-12-12 | 2010-05-27 | Weatherford Lamb | DEVICE FOR ACCESSING A TUBE ON A DRILLING DEVICE |
CA2646929C (en) * | 2007-12-10 | 2014-01-21 | Noetic Technologies Inc. | Gripping tool with fluid grip activation |
EP2313600B1 (en) * | 2008-07-18 | 2017-05-10 | Noetic Technologies Inc. | Tricam axial extension to provide gripping tool with improved operational range and capacity |
CN102089492B (en) | 2008-07-18 | 2014-04-30 | 诺埃提克技术公司 | Grip extension linkage to provide gripping tool with improved operational range, and method of use of the same |
-
2013
- 2013-12-20 NO NO20131716A patent/NO339203B1/en not_active IP Right Cessation
-
2014
- 2014-12-19 WO PCT/EP2014/078846 patent/WO2015092007A2/en active Application Filing
- 2014-12-19 EP EP14821629.4A patent/EP3084113A2/en not_active Withdrawn
- 2014-12-19 CA CA2934143A patent/CA2934143A1/en not_active Abandoned
- 2014-12-19 US US15/104,542 patent/US20160319613A1/en not_active Abandoned
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US10287830B2 (en) * | 2016-11-14 | 2019-05-14 | Frank's International, Llc | Combined casing and drill-pipe fill-up, flow-back and circulation tool |
Also Published As
Publication number | Publication date |
---|---|
NO339203B1 (en) | 2016-11-14 |
WO2015092007A2 (en) | 2015-06-25 |
NO20131716A1 (en) | 2015-06-22 |
WO2015092007A3 (en) | 2015-12-17 |
EP3084113A2 (en) | 2016-10-26 |
CA2934143A1 (en) | 2015-06-25 |
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Legal Events
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AS | Assignment |
Owner name: ODFJELL WELL SERVICES NORWAY AS, NORWAY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:HAUGHOM, PER OLAV;REEL/FRAME:040026/0271 Effective date: 20160920 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO PAY ISSUE FEE |