CN113802993A - Elastic sheet type feeding tool - Google Patents
Elastic sheet type feeding tool Download PDFInfo
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- CN113802993A CN113802993A CN202010534813.4A CN202010534813A CN113802993A CN 113802993 A CN113802993 A CN 113802993A CN 202010534813 A CN202010534813 A CN 202010534813A CN 113802993 A CN113802993 A CN 113802993A
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- 230000008602 contraction Effects 0.000 claims abstract description 21
- 238000007789 sealing Methods 0.000 claims description 11
- 238000012546 transfer Methods 0.000 claims description 4
- 238000011144 upstream manufacturing Methods 0.000 claims description 3
- 210000002445 nipple Anatomy 0.000 claims 2
- 238000011084 recovery Methods 0.000 description 9
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000012634 fragment Substances 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/021—Devices for subsurface connecting or disconnecting by rotation
Abstract
The invention provides a spring plate type feeding tool which comprises a central pipe, wherein an annular sleeve is arranged on the periphery of the central pipe, and a plurality of spring plates with reverse horse teeth buckles are arranged on the annular sleeve; the central tube is provided with a shrapnel contraction driving piece which is constructed to drive the shrapnel to be ejected or retracted along the radial direction; the inner wall of the connecting cylinder is provided with an inner reverse horse-tooth buckle; when the central tube is connected with the tieback cylinder in an inserting mode, the annular sleeve is arranged inside the tieback cylinder, and the outer reverse horse teeth buckle is matched with the inner reverse horse teeth buckle. The invention is used in cooperation with a feeding tool, and the back-inserting tool of the invention is pressurized after the feeding tool puts the pipe column in place to realize that the elastic sheet shrinkage driving piece drives the elastic sheet to shrink, thereby separating the tie-back cylinder from the central pipe.
Description
Technical Field
The invention relates to a spring sheet type feeding tool, and belongs to the field of oil and gas development tools.
Background
Along with the development of oil and gas reservoirs is promoted to a low-permeability compact reservoir, wells are deeper and deeper, particularly horizontal sections of horizontal wells are longer and longer, in the process of running a pipe column, the friction force of the pipe column in the horizontal section is large, the running difficulty of the pipe column is large, the pipe column needs to be run in two times, the lower portion of the pipe column is distributed in place and then released after the lower portion of the pipe column is distributed in place firstly, a tail pipe suspension mode or the upper portion of the pipe column is connected back to the upper portion of the pipe column directly, a traditional feeding and releasing tool is used as one part of a tool and cannot be combined randomly, the application range is limited, meanwhile, a spring plate horse tooth buckling mode is mostly adopted, the bearing tension of the traditional feeding and releasing tool is limited, if the pipe column runs in and meets resistance, the space for lifting tension of a release card is limited, most of releasing modes are single, and if the releasing is unsuccessful, no rescue measures are taken. The traditional delivery tools are complex in design, and the releasing mode is single.
Disclosure of Invention
Aiming at the technical problems in the prior art, the invention provides a spring plate type delivery tool which is matched with the delivery tool for use, the back-inserting tool disclosed by the invention realizes releasing by a forward-rotation back-off mode after a pipe column is put in place by the delivery tool, and if the releasing is unsuccessful, the elastic plate shrinkage driving piece can be pressurized to drive the elastic plate to shrink, so that a back-connection cylinder is separated from a central pipe.
In order to achieve the above object, the present invention provides a clip type feeding tool, including:
the central tube is circumferentially provided with an annular sleeve, and the annular sleeve is provided with a plurality of elastic sheets with external reverse horse teeth buckles; the elastic piece shrinkage driving piece is arranged on the central tube and can be driven by hydraulic pressure to drive the elastic piece to pop up or retract along the radial direction;
the inner wall of the connecting cylinder is provided with an inner reverse horse-tooth buckle matched with the outer reverse horse-tooth buckle;
after the pipe column is put in place, the pipe column is rotated forwards, and the outer reverse check button and the inner reverse check button are reversely buckled, so that the central pipe is separated from the tie-back barrel, and the releasing is realized in a way of rotating forwards and reversing;
if the releasing in the mode of forward rotation and reverse buckling is unsuccessful, the elastic sheet is started through hydraulic pressure to shrink the driving piece so that the elastic sheet is bent inwards, the outer reverse check and the inner reverse check are separated, the central tube is separated from the tie-back tube, and the releasing is realized in the mode that the elastic sheet is compressed by the hydraulic cylinder.
The invention is further improved in that a first step structure is arranged on the outer wall of the upper part of the central tube, the annular sleeve is arranged on the first step structure, the upper end of the elastic sheet is arranged on the annular sleeve, and a certain distance is reserved between the lower part of the elastic sheet and the central tube to form an elastic space.
The invention is further improved in that an annular groove is formed in the inner side of the lower part of the annular sleeve, and when the annular sleeve is fixed to the outer part of the central tube, the first step structure is clamped in the groove.
The invention has the further improvement that the outer side surface of the end part of the elastic sheet is provided with a bevel edge, the upper end of the elastic sheet contraction driving part is abutted against the bevel edge, and when the elastic sheet contraction driving part moves upwards, the elastic sheet moves towards the elastic space along the radial direction through the bevel edge.
The invention is further improved in that the lower end of the central tube is provided with a lower central tube, the upper part of the lower central tube is provided with a connecting tube connected with the bottom of the central tube through threads, and the lower part of the lower central tube is provided with a combined sealing element inserted with the tie-back cylinder.
The invention has the further improvement that the elastic sheet contraction driving piece is connected with the central pipe in a sliding and sealing way, the inner side of the lower part of the elastic sheet contraction driving piece is provided with an annular groove, the annular groove is covered on the outer side of the connecting pipe in a sealing way, and the elastic sheet contraction driving piece is connected with the connecting pipe through a shear pin;
and a hydraulic cylinder is arranged between the elastic sheet contraction driving piece and the lower central tube, and a pressure transmission hole for communicating the flow channel with the hydraulic cylinder is formed in the central tube.
The invention is further improved in that a ball seat is arranged on the inner side of the lower central tube and is positioned below the pressure transfer hole; and when the pressure building ball thrown out from the well moves to the ball seat through the flow passage, the pressure building ball is clamped on the ball seat.
The invention is further improved in that the lower end of the lower central tube is provided with a guide head, the lower central tube is provided with a first limiting step, and the tie-back cylinder is internally provided with a second limiting step matched with the first limiting step.
The invention is further improved in that the upper end of the central pipe is provided with an upper joint connected with an upstream assembly, and the upper joint is connected with the central pipe through threads;
the lower end of the upper joint is matched with the upper end of the annular sleeve through a saw-toothed structure.
The invention has the further improvement that the outer reverse horse teeth buckle on the elastic sheet and the inner reverse horse teeth on the outer wall of the tieback cylinder are both arranged in a spiral mode; when the tieback cylinder is installed, the tieback cylinder is connected with the elastic sheet in a precession mode; and the precession direction is opposite to the direction of rotation of the pipe string.
Compared with the prior art, the invention has the advantages that:
the invention relates to a shrapnel type delivery tool which is matched with the delivery tool for use, wherein the back-inserting tool realizes releasing by a forward-rotation back-off mode after a tubular column is put in place by the delivery tool, and if the releasing is unsuccessful, the shrapnel can be contracted by pressurizing to drive a shrapnel to contract, so that a tieback cylinder is separated from a central tube. The releasing is more reliable through two releasing modes. The device can be used in cooperation with a suspended packer, can also be used as a sending and releasing tool which does not need to be connected back to a wellhead, and can also be used as a sending and releasing tool which is difficult to put into a horizontal well and needs to adopt a drill rod or a drill collar to increase the weight of an upper pipe column.
Drawings
Preferred embodiments of the present invention will be described in detail below with reference to the attached drawing figures, wherein:
fig. 1 is a schematic structural view of a back-insertion tool according to an embodiment of the present invention, showing a resilient plate in an open state;
FIG. 2 is a schematic structural view of a reinsertion tool according to an embodiment of the present invention, showing the resilient tab in a retracted state;
FIG. 3 is a schematic structural view of a center tube according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the structure of the annular sleeve of one embodiment of the present invention, showing the location of the sawtooth structure.
In the drawings, like parts are provided with like reference numerals. The figures are not drawn to scale.
The meaning of the reference symbols in the drawings is as follows: 1. the connecting device comprises a central tube, 2, a connecting tube, 3, an annular kit, 4, an upper joint, 11, a flow channel, 12, a first step structure, 13, a lower central tube, 14, a connecting tube, 15, a combined sealing element, 16, a first limiting step, 17, a ball seat, 18, an elastic space, 19, a guide head, 21, a second limiting step, 22, an inner reverse horse teeth buckle, 31, an elastic sheet, 32, an outer reverse horse teeth buckle, 33, a groove, 34, an elastic sheet contraction driving element, 35, a hydraulic cylinder, 36, a shear pin, 37, a pressure transmission hole, 41 and a sawtooth structure.
Detailed Description
In order to make the technical solutions and advantages of the present invention more apparent, exemplary embodiments of the present invention are described in further detail below with reference to the accompanying drawings. It is clear that the described embodiments are only a part of the embodiments of the invention, and not an exhaustive list of all embodiments. And the embodiments and features of the embodiments may be combined with each other without conflict.
Fig. 1 schematically shows a clip delivery tool according to an embodiment of the present invention. According to the elastic sheet type feeding tool, the feeding tool is matched with the elastic sheet type feeding tool for use, after the feeding tool puts the pipe column in place, the reinsertion tool of the invention is pressurized to realize that the elastic sheet shrinkage driving piece drives the elastic sheet to shrink, so that the tieback cylinder is separated from the central pipe.
A clip type feeding tool according to an embodiment shown in fig. 1 and 2 includes a center tube 1, and the center tube 1 has a cylindrical structure. The central tube 1 is provided with an annular sleeve 3, and the annular sleeve 3 is sleeved on the upper part of the central tube 1. The annular sleeve 3 is provided with a plurality of elastic sheets 31, and the elastic sheets 31 are arranged in a circle along the circumferential direction of the central tube 1. The elastic sheet 31 is arranged downwards, and the outer side surface of the elastic sheet 31 is provided with an outer reverse button harness 32. The elastic sheet 31 has certain elasticity and can be ejected or retracted. The central tube 1 is provided with a shrapnel contraction driving piece 34, and the shrapnel contraction driving piece 34 is arranged at the lower part of the central tube 1 and is contacted with the shrapnel 31. The shrapnel retraction driving member 34 is configured to move to drive the shrapnel 31 to pop up or retract under the driving of hydraulic pressure.
In this embodiment, the shrapnel type delivery tool further comprises a tieback cylinder 2, and an inner reverse tinsel button 22 is arranged on the inner wall of the tieback cylinder 2. When the central tube 1 and the tieback cylinder 2 are butted, the lower part of the central tube 1 is inserted into the interior of the tieback cylinder 2, and the outer reverse button ridge 32 of the central tube 1 and the inner reverse button ridge 22 of the tieback cylinder 2 are matched with each other. The reverse direction check button here means that the screwing direction is opposite to the rotation direction of the pipe column, that is, the inner reverse direction check button 22 and the outer reverse direction check button 32 are in a reverse state when the pipe column rotates forward, and the pipe column rotates forward to separate the two buttons.
In the projectile type delivery tool according to the embodiment, there are two releasing modes, one mode is a forward rotation and reverse buckling mode, and the other mode is a hydraulic compression projectile mode.
When the pipe is used, the pipe column is rotated forward after the pipe column is put in place, the outer reverse check button 32 and the inner reverse check button 22 are reversely buckled, so that the central pipe 1 is separated from the tieback barrel 2, and releasing is realized in a mode of rotating forward and reversing.
If the releasing in the forward-rotation back-off mode is unsuccessful, the elastic sheet shrinkage driving piece 34 is started through hydraulic pressure to enable the elastic sheet 31 to bend inwards, the outer reverse check button 32 and the inner reverse check button 22 are separated, the central tube 1 is separated from the receiving tube 2, and the releasing is achieved in a mode that the elastic sheet is compressed through a hydraulic cylinder.
In one embodiment, as shown in fig. 3, a first step structure 12 is provided on the outer wall of the upper portion of the central tube 1, and the annular set 3 is provided on the first step structure 12. The upper end of the spring plate 31 is fixed at the lower end of the annular sleeve 3, and the lower part of the spring plate 31 extends downwards. Since the first stepped structure 12 is disposed on the central tube 1, and the annular sleeve 3 and the elastic sheet 31 are disposed on the first stepped structure 12, a certain distance is provided between the lower portion of the elastic sheet 31 and the central tube 1, and the distance is determined according to the height of the first stepped structure 12. The elastic space 18 is formed between the elastic sheet 31 and the central tube 1, and the elastic sheet 31 can be contracted into the elastic space 18 when being contracted.
In the clip type feeding tool according to the present embodiment, the annular bundle 3 and the clip 31 can be supported by providing the first step structure 12 such that the elastic space 18 is formed between the clip 31 and the center tube 1. The elastic sheet 31 is in an open state in a normal state, and the elastic sheet shrinkage driving piece 34 is in contact with the elastic sheet 31, so that the elastic sheet 31 can be limited from continuing to open outwards, and at the moment, when the tieback cylinder 2 is connected with the central tube 1, the outer reverse horse teeth buckle 32 of the elastic sheet 31 is just connected with the inner reverse horse teeth buckle 22 of the tieback cylinder 2. When the elastic piece shrinkage driving piece 34 moves, the elastic piece 31 can be pushed to shrink into the elastic space 18, so that the outer reverse molar buckles 32 of the elastic piece 31 are separated from the inner reverse molar buckles 22 of the connecting cylinder 2.
In one embodiment, the inner side of the lower part of the ring package 3 is provided with an annular groove 33, the opening of the annular groove 33 being directed towards the lower end surface of the ring package 3. The shape of the recess 33 matches the shape of the first stepped structure 12. When the annular sleeve 3 is fitted over the central tube 1, the first step structure 12 is located inside said groove 33.
When mounting, the annular sleeve 3 is sleeved on the central tube 1 from the upper end of the central tube 1, and when the annular sleeve 3 is moved downwards to the position of the first step structure 12, the first step structure 12 enters the groove 33, and the annular sleeve 3 is clamped on the first step structure 12. The first step formation 12 and the groove 33 act as a stop for the annular sleeve 3.
In one embodiment, the outer side surface of the end of the elastic sheet 31 is provided with a bevel edge, and the bevel edge inclines from the upper part of the outer side of the elastic sheet 31 to the lower part of the inner side of the elastic sheet 31. The upper end of the spring retraction actuator 34 abuts against the ramp. The driving member 34 remains stationary in the radial direction of the base pipe 1 due to the shrapnel contraction, but moves in a direction along the axial direction of the base pipe 1. When the elastic shrinkage driving member moves in the axial direction, the end part of the elastic shrinkage driving member pushes the inclined edge to move inwards, thereby pushing the elastic sheet 31 to shrink.
In one embodiment, the lower end of the central tube 1 is provided with a lower central tube 13, and the lower central tube 13 is in a circular tube or conical tube structure. The inner wall on the upper portion of lower center tube 13 is provided with the internal thread, is provided with the external screw thread on the outer wall of the lower part of center tube 1, and internal thread and external screw thread cooperate when lower center tube 13 and center tube 1 are connected. The upper part of the lower central tube 13 is provided with a connecting tube 14, the inner ring of the connecting tube 14 is matched with the outer ring of the lower end of the central tube 1, and the internal thread of the lower central tube 13 is arranged on the connecting tube 14. In this embodiment, the lower central tube 13 is a tubular structure with a thick upper part and a thin lower part, and the outer wall of the lower central tube is provided with a combined sealing member 15, and the combined sealing member 15 can seal the gap between the lower central tube 13 and the tieback cylinder 2 when the lower central tube is connected with the tieback cylinder 2. The lower end of the lower central tube 13 is provided with a guide head 19, and the end part of the guide head 19 is of a conical structure, so that the guide head can be conveniently inserted into the tieback cylinder 2.
In one embodiment, the leaf spring retraction actuator 34 is in sliding sealing communication with the base pipe 1. The inner side of the lower part of the elastic shrinkage driving piece is provided with an annular groove. The annular groove is covered on the outer side of the connecting pipe 14 in a sealing manner, the upper end part of the lower central pipe 13 is inserted into the annular groove, and the elastic sheet contraction driving piece 34 is connected with the connecting pipe 14 through a shear pin 36. When the connecting pipe 14 and the elastic shrinkage driving element are in a connected state, in the annular groove, a certain distance is reserved between the top end of the connecting pipe 14 of the lower central pipe 13 and the top end of the annular groove, so that a space enclosed by the annular groove, the central pipe 1 and the lower central pipe 13 is formed, and the space is used as a hydraulic cylinder 35 for driving the elastic sheet shrinkage driving element 34. The central tube 1 is provided with a pressure transfer hole 37 for communicating the flow channel 11 with the hydraulic cylinder 35.
When the disc spring type feeding tool according to the embodiment is operated, in the process of separating the central tube 1 and the tieback cylinder 2, the pressure in the fluid is transmitted from the pressure transmission hole 37 to the hydraulic cylinder 35 by increasing the pressure in the flow channel 11 of the central tube 1, and the pressure in the hydraulic cylinder 35 is increased accordingly. When the pressure in the hydraulic cylinder 35 increases to a certain value, the shear pin 36 is sheared, and the spring plate contraction driving member 34 is separated from the lower center tube 13 and moves upward under the driving of the pressure. In the process of moving the shrapnel retraction driving element 34 upwards, the inclined edge of the shrapnel 31 is pushed to move inwards, so that the shrapnel 31 is retracted. After the spring plate 31 is contracted, the external reverse check button 32 on the spring plate 31 is separated from the internal reverse check button 22 in the tieback cylinder 2.
In one embodiment, a ball seat 17 is provided on the inside of the lower center tube 13, and the ball seat 17 is located below the pressure transfer hole 37. The ball seat 17 is a conical or arc structure, and the inner wall of the ball seat is matched with the shape of the pressure building ball. The pressure building ball is thrown from the well head and is clamped on the ball seat 17 when moving to the position of the ball seat 17 through the flow passage 11. And (3) continuing pressurizing in the flow channel 11, wherein the pressure in the flow channel 11 above the ball seat 17 is increased due to the pressure-retaining ball blocking the flow channel 11, the pressure is transmitted into the hydraulic cylinder 35 through the pressure transmitting hole 37, when the pressure is increased to a certain value, the elastic sheet contraction driving piece 34 and the shear pin 36 of the lower central tube 13 are sheared, and the elastic sheet contraction driving piece 34 moves upwards under the action of the pressure, so that the elastic sheet 31 is driven to contract, and the elastic sheet 31 is separated from the tieback cylinder 2.
In one embodiment, the lower end of the lower center tube 13 is provided with a guiding head 19, and the edge of the end of the guiding head 19 is conical to guide the lower center tube 13 into the tieback cylinder 2 during plugging. The lower central tube 13 is provided with a first limit step 16, and the first limit step 16 is arranged in the circumferential direction. In the present embodiment, the portion above the first limit step 16 on the lower center pipe 13 serves as the connection pipe 14. A second limit step 21 is arranged in the tieback cylinder 2, and the second limit step 21 is matched with the first limit step 16.
In a preferred embodiment, the upper end of the central tube 1 is provided with an upper joint 4, the upper joint 4 is used for connecting other upstream components, an inner wall of the upper joint 4 is provided with an inner thread, an outer wall of the upper end of the central tube 1 is provided with an outer thread, and the upper joint 4 is connected to the upper end of the central tube 1 through a thread.
In a preferred embodiment, as shown in fig. 4, the lower end of the upper joint 4 and the upper end of the annular set 3 are engaged by a saw-tooth structure 41. The lower end of the upper joint 4 is provided with a saw-toothed structure 41, and the upper end of the annular sleeve joint is also provided with a saw-toothed structure. When the upper joint 4 is connected to the central tube 1, the sawtooth structure of the upper joint 4 is matched with the sawtooth structure of the annular sleeve 3, and the convex part of the sawtooth structure of the upper joint 4 is clamped in the concave part of the sawtooth structure of the annular sleeve 3; the recessed portion of the serration of the lower joint snaps over the protruding portion of the serration of the annular sleeve 3.
By arranging the saw-toothed structure 41 between the upper joint 4 and the annular sleeve 3, the upper joint 4 and the annular sleeve 3 can be kept fixed in the circumferential direction of the central tube 1, the annular sleeve 3 rotates along with the rotation of the upper joint 4, and after the upper joint 4 is fixed, the annular sleeve 3 cannot rotate due to the saw-toothed structure 41, so that the elastic sheet 31 is kept fixed.
In another embodiment, the indentation 33 of the ring set 3 is provided with a saw-tooth like structure 41 and the first step structure 12 is provided with a corresponding saw-tooth like structure 41, such that the ring set 3 cannot rotate relative to the first step structure 12.
In one embodiment, the external reverse button ridge 32 on the spring plate 31 is arranged in a spiral manner, the internal reverse button ridge 22 on the outer wall of the tieback cylinder 2 is arranged in the same spiral manner, and the tieback cylinder 2 can be connected with the spring plate 31 in a screwing manner when the tieback cylinder 2 is installed. This embodiment adopts two kinds of ways of giving up of corotation back-off and hydraulic cylinder compression shell fragment, and the giving up is more reliable.
When the clip type feeding tool according to the present embodiment is used, there are two insertion feeding methods.
One is a reverse rotation screwing-in mode, a spring sheet type delivery tool is assembled according to the figure 1, the recovery barrel 2 screws the assembled spring sheet type delivery tool of the figure 1 into the recovery barrel 2 in a reverse rotation mode with the recovery barrel 2 until a first limiting step 16 of the figure 1 is in contact with a second limiting step 21 of the recovery barrel 2 and then is connected in place, as shown in the figure 2, and then a connecting pipe 14 column at the lower part of the recovery barrel 2 is connected to form the delivery tool which is put into a well along with the tool.
The other is a pressurized direct insertion mode, firstly an elastic sheet type delivery tool is assembled according to the figure 1, after the delivery tool is inserted into the recovery cylinder 2, the elastic sheet 31 is deformed to enter the recovery cylinder 2 by increasing the insertion pressure until the first limit step 16 of the figure 1 is contacted with the second limit step 21 of the recovery cylinder 2 and then is connected in place, and then a connecting pipe 14 column at the lower part of the recovery cylinder 2 is connected to form the delivery tool which is put into a well along with the tool.
In the embodiment, the releasing manner is totally two:
a forward rotation and reverse buckling mode: after the pipe column is put in place, the moment is transmitted to the elastic sheet 31 through the upper joint 4 by rotating the pipe column positively, and because the outer reverse check button 32 of the elastic sheet 31 and the inner reverse check button 22 of the tieback cylinder 2 both belong to reverse buckling, the positive rotation is reverse buckling, and finally the elastic sheet type delivery tool in fig. 1 is reversed opened from the position of the tieback to realize releasing.
The hydraulic cylinder compresses the spring plate releasing mode: if the back-off is unsuccessful or inconvenient, the back-off can be realized by pressing the inside of the pipe column or pressing the ball on the surface of the ball seat 17, the pressure is transmitted to the hydraulic cylinder 35 through the pressure transmission hole 37, when the pressure of the hydraulic cylinder 35 is greater than that of the shear pin 36, the shear pin 36 is cut off, the elastic sheet 31 contracts the hydraulic cylinder 35 to move upwards, the elastic sheet 31 contracts in the process that the elastic sheet 31 contracts the hydraulic cylinder 35 to move upwards, and as shown in fig. 3, the outer reverse horse teeth button 32 of the reverse elastic sheet 31 is separated from the inner reverse horse teeth button 22 of the receiving cylinder 2.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, the appended claims are intended to be construed to include preferred embodiments and all such changes and/or modifications as fall within the scope of the invention, and all such changes and/or modifications as are made to the embodiments of the present invention are intended to be covered by the scope of the invention.
Claims (10)
1. A clip type delivery tool, comprising:
the device comprises a central tube (1), wherein an annular sleeve (3) is arranged on the circumferential direction of the central tube (1), and a plurality of elastic sheets (31) with external reverse tinsel buttons (32) are arranged on the annular sleeve (3); the central tube (1) is provided with a shrapnel contraction driving piece (34), and the shrapnel contraction driving piece (34) is constructed to drive the shrapnel (31) to pop up or retract along the radial direction under the driving of hydraulic pressure; and
the inner wall of the tieback cylinder (2) is provided with an inner reverse horse teeth buckle (22) matched with the outer reverse horse teeth buckle (32);
after the pipe column is put in place, the pipe column is rotated forwards, the outer reverse check (32) and the inner reverse check (22) are reversely buckled, so that the central pipe (1) is separated from the tieback barrel (2), and releasing is realized in a way of rotating forwards and reversing;
if the releasing in the mode of forward rotation and reverse buckling is unsuccessful, the elastic sheet is started through hydraulic pressure to shrink the driving piece (34) so that the elastic sheet (31) bends inwards, the outer reverse horse teeth buckle (32) and the inner reverse horse teeth buckle (22) are separated, and therefore the central tube (1) is separated from the receiving tube (2), and the releasing is achieved in the mode that the elastic sheet is compressed through a hydraulic cylinder.
2. The clip type feeding tool according to claim 1, wherein a first step structure (12) is provided on an outer wall of an upper portion of the center tube (1), the annular set (3) is provided on the first step structure (12), and an upper end of the clip (31) is provided on the annular set (3), a lower portion of the clip (31) is spaced apart from the center tube (1) to form an elastic space (18).
3. The clip delivery tool according to claim 2, wherein the inner side of the lower part of the annular sleeve (3) is provided with an annular groove (33), and the first step structure (12) is snapped into the groove (33) when the annular sleeve (3) is fixed outside the central tube (1).
4. A clip advancing tool according to claim 3, wherein the outer side of the end of the clip (31) is provided with a beveled edge against which the upper end of the clip retracting drive (34) abuts, and the clip (31) is moved radially inward into the resilient space (18) by the beveled edge when the clip retracting drive (34) is moved upward.
5. The clip type feeding tool according to any one of claims 1 to 4, wherein the lower end of the center tube (1) is provided with a lower center tube (13), the upper part of the lower center tube (13) is provided with a connecting connection tube (14) which is connected with the bottom of the center tube (1) through a thread, and the lower part is provided with a combined sealing member (15) which is inserted into the tieback cylinder (2).
6. The shrapnel type feeding tool according to claim 5, characterized in that the shrapnel type contraction driving piece (34) is connected with the central tube (1) in a sliding and sealing way, the inner side of the lower part of the shrapnel type contraction driving piece is provided with an annular groove, the annular groove is covered on the outer side of the connecting tube (14) in a sealing way, and the shrapnel type contraction driving piece (34) is connected with the connecting tube (14) through a shear pin (36);
a hydraulic cylinder (35) is arranged between the elastic sheet contraction driving piece (34) and the lower central pipe (13), and a pressure transfer hole (37) for communicating the flow channel (11) with the hydraulic cylinder (35) is formed in the central pipe (1).
7. The clip feed tool according to claim 6, wherein the lower center tube (13) is provided at an inner side thereof with a ball seat (17), the ball seat (17) being located below the pressure transmitting hole (37); when the pressure-building ball thrown out from the well moves to the ball seat (17) through the flow passage (11), the pressure-building ball is clamped on the ball seat (17).
8. The tabbed feeding tool as claimed in claim 7, characterized in that the lower center tube (13) is provided at its lower end with a guide head (19) and the lower center tube (13) is provided with a first stop step (16), and the tieback cylinder (2) is provided with a second stop step (21) cooperating with the first stop step (16).
9. The tabbed delivery tool as claimed in any of claims 1 to 8, characterized in that the upper end of the central tube (1) is provided with an upper nipple (4) for connection to an upstream component, the upper nipple (4) being in threaded connection with the central tube (1);
wherein the lower end of the upper joint (4) is matched with the upper end of the annular sleeve (3) through a saw-toothed structure (41).
10. The shrapnel type delivery tool according to claim 9, characterized in that the external reverse dent button (32) on the shrapnel (31) and the internal reverse dent on the outer wall of the connecting back cylinder (2) are both arranged in a spiral way; when the tieback cylinder (2) is installed, the tieback cylinder (2) is connected with the elastic sheet (31) in a screwing mode.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534813.4A CN113802993A (en) | 2020-06-12 | 2020-06-12 | Elastic sheet type feeding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010534813.4A CN113802993A (en) | 2020-06-12 | 2020-06-12 | Elastic sheet type feeding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113802993A true CN113802993A (en) | 2021-12-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010534813.4A Pending CN113802993A (en) | 2020-06-12 | 2020-06-12 | Elastic sheet type feeding tool |
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