NO20200807A1 - Holding device and method for a pipe gripping assembly - Google Patents
Holding device and method for a pipe gripping assembly Download PDFInfo
- Publication number
- NO20200807A1 NO20200807A1 NO20200807A NO20200807A NO20200807A1 NO 20200807 A1 NO20200807 A1 NO 20200807A1 NO 20200807 A NO20200807 A NO 20200807A NO 20200807 A NO20200807 A NO 20200807A NO 20200807 A1 NO20200807 A1 NO 20200807A1
- Authority
- NO
- Norway
- Prior art keywords
- pipe
- holding device
- elastic element
- contacting element
- pipe contacting
- Prior art date
Links
- 238000000034 method Methods 0.000 title claims description 5
- 239000002783 friction material Substances 0.000 description 7
- 230000000712 assembly Effects 0.000 description 5
- 238000000429 assembly Methods 0.000 description 5
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000005060 rubber Substances 0.000 description 1
- 229920003051 synthetic elastomer Polymers 0.000 description 1
- 239000005061 synthetic rubber Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
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
- E21B19/161—Connecting or disconnecting pipe couplings or joints using a wrench or a spinner adapted to engage a circular section of pipe
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/14—Clamps for work of special profile
- B25B5/147—Clamps for work of special profile for pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B1/00—Vices
- B25B1/20—Vices for clamping work of special profile, e.g. pipes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B13/00—Spanners; Wrenches
- B25B13/48—Spanners; Wrenches for special purposes
- B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
- B25B13/5008—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes for operating on pipes or cylindrical objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B5/00—Clamps
- B25B5/16—Details, e.g. jaws, jaw attachments
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16L—PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL
- F16L3/00—Supports for pipes, cables or protective tubing, e.g. hangers, holders, clamps, cleats, clips, brackets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B1/00—Vices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B7/00—Pliers; Other hand-held gripping tools with jaws on pivoted limbs; Details applicable generally to pivoted-limb hand tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Manipulator (AREA)
Description
HOLDING DEVICE AND METHOD FOR A PIPE GRIPPING ASSEMBLY
Technical field
[0001] The present invention relates generally to a holding device for a pipe gripping assembly wherein the holding device is adapted to host a pipe contacting element. In a griping assembly multiple holding devices are arranged to grip a pipe and rotate it into or out of threaded engagement with another pipe.
Background art
[0002] In prior art there are multiple problems with gripping assemblies used for rotating pipes in or out of threaded engagements. For example, most gripping assemblies requires large force to succeed in rotating the pipe. Using large force creates multiple problems and increase the risk for damage to the pipes, especially relating to the so-called egg effect wherein the pipe risks to adapt the form of an egg due to pressure from the gripping assembly.
[0003] Another common problem is that most gripping solution risk to damage the threaded sections of the pipes if force is applied on the pipe at a location of the threaded section. Yet another problem in the prior art is that gripping assemblies tends to leave marks in the pipes from the jaws of the pipe contacting element.
Summary of invention
[0004] An object of the present invention is to address at least some of the drawbacks of the prior art. Thus, an object of the present solution is to provide a gripping assembly comprising a holding device that don’t leave any marks in the pipe that is threaded into, or out of, engagement with another pipe.
[0005] Another object of the present solution is to provide a holding device for a gripping arrangement that would require less force to rotate the pipe, thus overcoming most of the drawbacks with the prior art.
[0006] Thus, the solution relates to a holding device for a pipe gripping assembly, wherein the holding device is adapted to host at least one pipe contacting element. The holding device comprises an elastic element and a locking device, wherein the locking device is adapted to lock said pipe contacting element into the holding device between the elastic element and said locking device.
[0007] It is one advantage with the present solution that the elastic element enables that the pipe contacting element can move in a vertical direction, i.e. a direction along the extension direction of a pipe to be gripped, and thus reduces or eliminates the marks left in the pipe. When the pipe is threaded into and out of engagement with another pipe there is movement due to the pitch of the thread. The movement has to be compensated for, either by allowing the pipe to slide within the engagement with the pipe contacting element or through allowing the pipe contacting element to move.
[0008] It is another advantage with the present solution that the elasticity of the elastic element allows for a controlled movement of the pipe contacting element, further reducing the risk for leaving marks in the pipe or damaging the pipe.
[0009] In one embodiment the elastic element is made of any one of rubber and synthetic rubber.
[0010] In one embodiment the elastic element is an element that deforms elastic.
[0011] In one embodiment the elastic element is an element that allows for movement wherein the elastic element deforms elastic during rotation of the pipe and returns to its original form after rotation.
[0012] In one embodiment further describing details of the holding device for the pipe gripping assembly, the holding device is adapted to host at least one pipe contacting element in a space. The holding device comprises an elastic element and a locking device, wherein the locking device is adapted to retain said pipe contacting element between the elastic element and said locking device in the space of the holding device.
[0013] In the art is it common to refer to the holding device for the pipe gripping assemblies as a jaw and the pipe contacting element is typically called a dice. The invention as described herein is however not limited to the traditional form of a dice or jaw, the solution is for example usable with other iterations of pipe gripping assemblies.
[0014] In one embodiment of the holding device space is confined by the locking device, the elastic element, and two edges. The space is in one embodiment further confined by a back surface.
[0015] In one embodiment of the holding device the two edges have a shape adapted to receive the pipe contacting element and restrict the movement of the pipe contacting element in a first and second direction. The two edges further restrict the movement of the pipe contacting element in a third direction, the third direction being perpendicular to said first and second directions.
[0016] In one embodiment the two edges each comprises a surface arranged to restrict movement of the pipe contacting element in a direction perpendicular to the extension direction of the pipe to be gripped.
[0017] In one embodiment the two edges have a shape making the space a shallow frusto-cone, i.e. the space is wider closer to the center of the holding device than to the edge. This enables that the pipe contacting element can be held in place. The pipe contacting element has a mirrored corresponding shape.
[0018] In other embodiment the shape of the edges is rounded, have square indentations, or any other form that allows for the movement of the pipe contacting element to be restricted such that the pipe contacting element is kept in position of the space.
[0019] In one embodiment of the holding device the first and second direction are directions that are perpendicular to the extension direction of a pipe to be gripped. The extension direction of a pipe to be gripped is the same direction as a longitudinal direction of the pipe.
[0020] In one embodiment of the holding device, the elastic element is arranged in an aperture going through the holding device.
[0021] In one embodiment the elastic element has one larger section and one smaller section, wherein the smaller section is adapted to extend into the space and the larger section is adapted to retain the elastic element between the holding device and a surface the holding device is mounted to.
[0022] In one embodiment of the elastic element and the locking device are arranged to abut the pipe contacting element at opposite sides of a longitudinal direction of the pipe contacting element.
[0023] In one embodiment of the holding device the elastic element has an elasticity allowing movement of the pipe contacting element corresponding to the pitch of a threaded section of a pipe adapted to be rotated between 20 and 45 degrees by a pipe gripping assembly.
[0024] In one embodiment of the holding device the elastic element has a diameter between 2 and 10 mm.
[0025] In one embodiment of the holding device the pipe contacting element comprises multiple jaws for enhanced grip to a pipe.
[0026] In one embodiment the holding device is arranged in a pipe gripping assembly comprising at least two holding devices fastened each to a gripping body.
[0027] According to one aspect the holding device is arranged in a pipe gripping assembly for connecting pipes into threaded engagement in a drill string, and the following steps are performed:
- gripping a first pipe with pipe contacting elements of at least a first and a second holding device,
- gripping a second pipe with pipe contacting elements of at least a third and fourth holding device,
- rotating said first and second holding device in relation to said third and fourth holding device connecting said first and second pipe into threaded engagement, and
- during rotation compressing the elastic element minimizing the movement between the pipe and pipe contacting elements being in engagement.
Brief description of drawings
[0028] The invention is now described, by way of example, with reference to the accompanying drawings, in which:
[0029] Fig. 1 illustrates a holding device with a locking device, an elastic element, and a space for a pipe contacting element.
[0030] Fig. 2 illustrates a holding device with a locking device, an elastic element, and a pipe contacting element arranged in the space for the pipe contacting element locked between the locking device and the elastic element.
[0031] Fig. 3 illustrates a top view of one embodiment of a holding device wherein a first and second edge is visible.
[0032] Fig. 4 illustrates a top view of one embodiment of a pipe contacting element.
[0033] Fig. 5 illustrates an isometric view of an elastic element.
[0034] Fig. 6 illustrates one embodiment of an isometric view of a holding device with a pipe contacting element, wherein the pipe contacting element is illustrated in a state wherein the pipe contacting element is partly in place during an exchange process of the pipe contacting element
[0035] Fig. 7 illustrates one embodiment of a rear view of the holding device wherein an aperture adapted to host an elastic element is illustrates.
[0036] Fig. 8 illustrates one embodiment of an isometric view of a holding device wherein it is illustrated how the elastic element in one embodiment is arranged extending through the holding device.
[0037] Fig. 9 illustrates one embodiment of holding devices with multiple pipe contacting elements arranged in a pipe gripping assembly.
[0038] Fig. 10a illustrates one embodiment of a holding device.
[0039] Fig. 10b illustrates one state of the elastic element in the embodiment of figure 10a.
[0040] Fig. 10c illustrates another state of the elastic element in the embodiment of figure 10a.
Description of embodiments
[0041] In the following, a detailed description of the different embodiments of the invention is disclosed under reference to the accompanying drawings. All examples herein should be seen as part of the general description and are therefore possible to combine in any way of general terms. Individual features of the various embodiments and aspects may be combined or exchanged unless such combination or exchange is clearly contradictory to the overall function of the holding device.
[0042] Figure 1 illustrates a holding device 2 for a gripping assembly 1. The holding device 2 comprises means for attaching the holding device 2 to a gripping assembly and comprises a space 6 for hosting a pipe contacting element 3. The space 6 has in the embodiment as illustrated in figure 1 sections comprising a high friction material, such as wolfram carbide or another high friction material. The high friction material is for example sprayed as a surface coating in sections 61 of the space 6. In one embodiment the space 6 is entirely coated with a high friction material, in another only part of the space is coated with the high friction material, in yet another embodiment no high friction material is used. In one embodiment, not illustrated, is the high friction material instead coated on the back side of the pipe contacting element 3, however for cost reasons this is in most embodiments avoided. The pipe contacting element 3 is a replaceable part that is replaced multiple times during the lifetime of the holding device 2.
[0043] Figure 1 further illustrates one embodiment of the elastic element 5, in figure 1 located near the bottom part of the space 6. The locking device 4 is also illustrated and located on the opposite side of the space 6 in relation to the elastic element 5.
[0044] Figure 2 illustrates a holding device 2 wherein a pipe contacting element 3 is hosted in the space 6 of the holding device 2. The embodiment as illustrated in figure 2 illustrates a holding device 2 corresponding to the holding device 2 as illustrated in figure 1. The pipe contacting element 3 will be further described in relation to figures 4 and 6.
[0045] Figure 3 illustrates a top view of the holding device 2 wherein the locking device 4, part of the elastic element 5, and the space 6 is clearly visible. As illustrated in figure 3 the space 6 is open from the top to allow a pipe contacting element 3, not shown in figure 3, to slide into the space 6. The edges, 2a and 2b, have a form that together restricts movement of the pipe contacting element 3 sideways and forward, or in at least three directions, right, left, and forward. The edges 2a, 2b may have different forms, such as having an angle that is less than 90 degrees as illustrated in figure 3 but it could also be a radius or any other suitable form that restricts movement of the pipe contacting element 3.
[0046] Figure 4 illustrates a pipe contacting element 3 comprising corresponding edges 22a, 22b that have an inverted shape of the edges 2a, 2b of the holding device 2. The corresponding edges 22a, 22b might in different embodiments have different shapes, however their purpose is to retain the pipe contacting element 3 in at least a first, second, and third direction, or at least two dimensions.
[0047] Figure 4 further illustrates multiple jaws 10 arranged on the pipe contacting element 3 to provide better grip of a pipe. It shall be noted that the entire pipe contacting element 3 sometimes is called a jaw in the art of the field.
[0048] Figure 5 illustrates an elastic element 5 having two different diameters, the smaller diameter is adapted to extend into the space 6 of the holding device 2 and the larger diameter is adapted to extend part or entirely through the holding device 2. In figure 5 the elastic element 5 has a round shape, however it shall be noted that the elastic element 5 might have different forms such as triangular or rectangular within the scope of the solution as described herein.
[0049] Figure 6 illustrates a pipe contacting element 3 partly placed within the space 6 and thus illustrates how the pipe contacting element 3 is exchanged. The holding device 2 in general has a longer lifetime than the pipe contacting element 3.
[0050] Figure 7 illustrates a back view of the holding device 2 which in use is arranged towards a surface of a pipe gripping assembly. The holding device 2 comprises an aperture 7 to host the elastic element 5. The elastic element 5 is placed through the aperture 7 extending into the space 6. When the holding device 2 is mounted to the pipe gripping assembly the elastic element 5 is kept in place since it only may be removed through the back of the holding device 2.
[0051] Figure 8 illustrates a partly transparent view wherein it is shown how the elastic element 5 in one embodiment extends through the holding device 2.
[0052] Figure 9 illustrates one embodiment of a pipe gripping assembly 1 wherein a pipe 100 is about to be gripped. The pipe gripping assembly 1 can for example comprise any suitable number of holding devices 2.
[0053] Figure 10a illustrates a holding device 2 wherein the function of the elastic element 5 is further emphasized. Figure 10b and 10c illustrates different states of the elastic element 5, wherein figure 10b illustrates a non-compressed elastic element 5 at a normal state and figure 10c illustrates a compressed elastic element 5 at a stage wherein a pipe is turned causing the elastic element 5 to be compressed.
[0054] Figure 10a further illustrates one embodiment of the holding device 2 wherein a gap 51 is arranged between the locking device 4 and the pipe contacting element 3 allowing for movement also in a direction away from the elastic element 5 wherein. In this embodiment, there is no need for an elastic element above the pipe contacting element 3 due to gravity.
- -
Claims (11)
1. A holding device (2) for a pipe gripping assembly (1), wherein the holding device (2) is adapted to host at least one pipe contacting element (3) in a space (6) characterized in that the holding device (2) comprises an elastic element (5) and a locking device (4), wherein the locking device (4) is adapted to retain said pipe contacting element (3) between the elastic element (5) and said locking device (4) in the space (6) of the holding device (2).
2. The holding device (2) according to claim 1, wherein space (6) is confined by the locking device (4), the elastic element (5), and two edges (2a, 2b).
3. The holding device (2) according to any one of claims 1 or 2, wherein the two edges (2a, 2b) have a shape adapted to receive the pipe contacting element (3) and restrict the movement of the pipe contacting element (3) in a first and second direction, and wherein the two edges (2a, 2b) further restricts the movement of the pipe contacting element (3) in a third direction, said third direction being perpendicular to said first and second directions.
4. The holding device (2) according to claim 3, wherein said first and second direction both are perpendicular to the extension direction of a pipe to be gripped.
5. The holding device (2) according to any one of claims 1 to 3, wherein the elastic element (5) is arranged in an aperture (7) going through the holding device (2).
6. The holding device (2) according to any one of claims 1 to 5, wherein the elastic element (5) and the locking device (4) are arranged to abut the pipe contacting element (3) at opposite sides of a longitudinal direction of the pipe contacting element (3).
7. The holding device (2) according to any one of claims 1 to 6, wherein the elastic element (3) has an elasticity allowing movement of the pipe contacting element (3) corresponding to the pitch of a threaded section of a pipe adapted to be rotated between 20 and 45 degrees by a pipe gripping assembly (1).
8. The holding device (2) according to any one of claims 1 to 7, wherein the elastic element has a diameter between 2 and 10 mm.
9. The holding device (2) according to any one of claims 1 to 8, wherein the pipe contacting element (3) comprises multiple jaws (10) for enhanced grip to a pipe.
10. The holding device (2) according to any one of claims 1 to 9, wherein the holding device (2) is arranged in a pipe gripping assembly (1) comprising at least two holding devices (2) fastened each to a gripping body (101).
11. Method in a holding device (2) according to any one of claims 1 to 10, wherein the holding device (2) is arranged in a pipe gripping assembly (1) for connecting pipes into threaded engagement in a drill string, wherein the method comprises the steps:
- gripping a first pipe with pipe contacting elements (3) of at least a first and a second holding device (2),
- gripping a second pipe with pipe contacting elements (3) of at least a third and fourth holding device (2),
- rotating said first and second holding device (2) in relation to said third and fourth holding device (2) connecting said first and second pipe into threaded engagement, and
- during rotation compressing the elastic element (3) minimizing the movement between the pipe and pipe contacting elements (3) being in engagement.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE1950880A SE543770C2 (en) | 2019-07-10 | 2019-07-10 | Holding device for a pipe gripping assembly |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NO20200807A1 true NO20200807A1 (en) | 2021-01-11 |
Family
ID=74222112
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NO20200807A NO20200807A1 (en) | 2019-07-10 | 2020-07-09 | Holding device and method for a pipe gripping assembly |
Country Status (2)
| Country | Link |
|---|---|
| NO (1) | NO20200807A1 (en) |
| SE (1) | SE543770C2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12320212B2 (en) | 2023-02-22 | 2025-06-03 | M&M Oil Tools, LLC | Die adaptor and method |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE546555C2 (en) * | 2021-09-17 | 2024-11-26 | Totech Ind Ab | Iron roughneck apparatus and holding device attachable an iron roughneck apparatus |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7568522B2 (en) * | 2001-05-17 | 2009-08-04 | Weatherford/Lamb, Inc. | System and method for deflection compensation in power drive system for connection of tubulars |
| US7231984B2 (en) * | 2003-02-27 | 2007-06-19 | Weatherford/Lamb, Inc. | Gripping insert and method of gripping a tubular |
| WO2009031166A1 (en) * | 2007-09-03 | 2009-03-12 | Sgolastra & Giampaoli S.R.L. | Equipment used to unscrew drill rods, of the type composed of an overlapped pair of vices |
| EP3066292B1 (en) * | 2013-11-04 | 2018-10-17 | Totech Industriutveckling AB | An improved pipe gripper |
| NO342134B1 (en) * | 2015-04-07 | 2018-03-26 | Robotic Drilling Systems As | Apparatus and method for gripping a tubular member |
| RS60877B1 (en) * | 2015-05-15 | 2020-11-30 | Drillform Technical Services Ltd | Modified die block for drilling rig floor wrench |
-
2019
- 2019-07-10 SE SE1950880A patent/SE543770C2/en not_active IP Right Cessation
-
2020
- 2020-07-09 NO NO20200807A patent/NO20200807A1/en unknown
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US12320212B2 (en) | 2023-02-22 | 2025-06-03 | M&M Oil Tools, LLC | Die adaptor and method |
Also Published As
| Publication number | Publication date |
|---|---|
| SE1950880A1 (en) | 2021-01-11 |
| SE543770C2 (en) | 2021-07-20 |
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