CN103742092A - Expansion pipe completion tool - Google Patents
Expansion pipe completion tool Download PDFInfo
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- CN103742092A CN103742092A CN201310751313.6A CN201310751313A CN103742092A CN 103742092 A CN103742092 A CN 103742092A CN 201310751313 A CN201310751313 A CN 201310751313A CN 103742092 A CN103742092 A CN 103742092A
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- 210000000078 claw Anatomy 0.000 claims abstract description 16
- 239000012530 fluid Substances 0.000 claims description 68
- 210000002445 nipple Anatomy 0.000 claims description 15
- 238000005553 drilling Methods 0.000 claims description 9
- 239000000428 dust Substances 0.000 claims description 8
- 238000007789 sealing Methods 0.000 claims description 4
- 238000000034 method Methods 0.000 abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 19
- 238000002347 injection Methods 0.000 description 8
- 239000007924 injection Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 238000005516 engineering process Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 239000003673 groundwater Substances 0.000 description 2
- 239000002131 composite material Substances 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
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Abstract
The invention provides an expansion tube completion tool, comprising: the lower end of the expansion pipe is connected with a floating shoe; the central tube penetrates through the expansion tube, the lower end of the central tube is sequentially connected with an expansion cone locking split claw and an expansion cone locking mandrel, and the upper end of the central tube is provided with a first through hole; the first-stage hydraulic cylinder is sleeved at the position of the central pipe, where the first through hole is formed; the first-stage expansion cone is sleeved on the central tube and located at the lower end of the first-stage hydraulic cylinder, the reducing expansion cone is arranged at the lower end of the first-stage expansion cone, and the reducing expansion cone is sleeved on the central tube. The reducing expansion cone of the expansion pipe well completion tool is of a combined type variable-diameter structure, the diameter of a pipe column can be minimized in the process of running into an open hole well, the risk of resistance during running is reduced, the combined reducing expansion cone can provide a large expansion rate, and the expansion pipe well completion can be realized without losing the size of a well hole or with the size of the well hole lost as small as possible.
Description
Technical field
The present invention has about a kind of expansion tube completion tool, especially has about the expansion tube completion tool of applying in a kind of petroleum industry.
Background technology
Bulged tube technology is the new technology being surging forward in recent years, and it can be applicable to the operation process such as drilling well, completion and oil recovery, well workover.Expansion tube expansion process is the process of body flow harden, and expansion fashion has mechanical type, fluid pressure type etc.
At present, there is the contradictory problems that is lowered to difficulty and the large swell increment of expection in the on-the-spot application of bulged tube technology, expect that expansion rate causes greatly swollen cone oversize, the swollen cone of the conventional expansion pipe tool of domestic use is built-in, also be, expansion cone is placed in expansion tube body before expansion tube expands, this just makes in expansion tube body must existence can to hold the wealthy footpath emission cavity of this expansion cone, the existence of wealthy footpath emission cavity makes expansion tube being lowered to the easy risk that is hampered in process, and cause being lowered to, has some setbacks or failed situation generation; In addition, the expansion cone of current domestic use is mostly monolithic construction, and it cannot be realized reducing and expand, for guaranteeing to be lowered to and the safety that expands, swollen cone size is seriously limited, how by increasing expansion tube outer rubber joint ring thickness, to make up, and causes the rear well internal diameter that expands still to have greater loss.
Therefore, be necessary to provide a kind of new expansion pipe tool, overcome above-mentioned defect.
Summary of the invention
The object of this invention is to provide a kind of expansion tube completion tool, its variable radial expanding cone is Combined changable gauge structure, it can make tubing string be lowered to diameter in the process of open hole well to minimize, reduce to be lowered to the risk that is hampered, and after this variable radial expanding cone combination, can provide larger expansion rate, can realize the loss borehole size that expansion tube completion is not lost borehole size or tried one's best little.
Above-mentioned purpose of the present invention can adopt following technical proposal to realize:
The invention provides a kind of expansion tube completion tool, described expansion tube completion tool comprises:
Expansion tube, its lower end is connected with float shoe;
Central tube, it is located in described expansion tube, and the lower end of described central tube is connected with swollen cone locking point claw and swollen cone lock mandrel in turn, and the upper end of described central tube offers the first perforation;
One-level fluid cylinder, it is set in described central tube and offers the described first position of boring a hole;
One-level is swollen cone, it is set on described central tube, the lower end of described one-level is swollen cone is positioned at described one-level fluid cylinder, the lower end of the swollen cone of described one-level is provided with variable radial expanding cone, and described variable radial expanding tapered sleeve is located on described central tube.
In a preferred embodiment, described expansion tube completion tool also comprises secondary fluid cylinder, the upper end of described central tube offers the second perforation, described the second perforation is positioned at the lower end of described the first perforation, described secondary fluid cylinder is set in described central tube and offers described biperforate position, and it is between described one-level fluid cylinder and the swollen cone of described one-level.
In a preferred embodiment, described one-level fluid cylinder comprises one-level hydraulic cylinder and is connected to the one-level fluid cylinder cylinder body of described one-level hydraulic cylinder lower end, between described one-level fluid cylinder cylinder body and described one-level hydraulic cylinder, be formed with one-level container cavity, the sheathed first stage piston that is connected with on described central tube, described first stage piston is arranged in described one-level container cavity.
In a preferred embodiment, the outside, upper end of described first stage piston is provided with jump ring, and the lower end of described one-level hydraulic cylinder offers jump-ring slot, and described jump ring matches with described jump-ring slot.
In a preferred embodiment, described secondary fluid cylinder has secondary fluid cylinder cylinder body, described secondary fluid cylinder cylinder body is connected to the lower end of described one-level fluid cylinder, between described secondary fluid cylinder cylinder body and described one-level fluid cylinder, be formed with secondary container cavity, the sheathed second piston that is connected with on described central tube, described second piston is arranged in described secondary container cavity.
In a preferred embodiment, a described swollen cone locking point claw is connected with described swollen cone lock mandrel by shear pin.
In a preferred embodiment, the lower end of described expansion tube is connected with variable buckle pipe nipple, and described float shoe is connected on described variable buckle pipe nipple, and described swollen cone lock mandrel is located in described variable buckle pipe nipple.
In a preferred embodiment, described variable radial expanding cone comprises:
Epicone seat, it is set on described central tube, and described epicone seat contact is in the lower end of the swollen cone of described one-level;
Swollen cone distinguish, it has multiple upper distinguish and multiple lower distinguish, and one end of described upper distinguish is connected with described epicone seat, and described multiple upper distinguish and described multiple lower distinguish are along the circumferential direction crisscross arranged, and can be combined into a swollen cone relative sliding;
Lower cone seat, it is connected with described lower distinguish.
In a preferred embodiment, the lower end of described central tube radially outward convexes with support ring, and the lower end of described variable radial expanding cone is positioned on described support ring.
In a preferred embodiment, in described central tube, be equipped with Compounded rubber plug, described Compounded rubber plug comprises plug seat, described plug seat has through hole, the outside, upper end of described plug seat is arranged with plug, and its lower end is connected with rubber ball cover, and described rubber ball cover inner seat is provided with ball, the through hole upper end sealing of described plug seat is provided with rupture disk, and the outside, lower end of described plug seat convexes with plug jump ring.
In a preferred embodiment, on described central tube, be arranged with dust ring, described dust ring is positioned at the upper end of described one-level fluid cylinder.
In a preferred embodiment, the upper end of described central tube is connected with drilling rod.
Feature and the advantage of expansion tube completion tool of the present invention are:
One, expansion tube completion tool of the present invention, adopt the swollen cone of one-level and variable radial expanding cone expansion expansion tube, one-level is swollen, and cone expands in advance to expansion tube, variable radial expanding cone when not combining its swollen cone distinguish in released state, variable radial expanding cone diameter is little, and without wealthy footpath, it can be with in the smooth lower going-into-well of the swollen cone of one-level, so that tubing string is lowered to diameter in the process of open hole well, minimize, reduce and be lowered to the risk that is hampered; In addition, variable radial expanding cone is after combination reducing, its diameter is greater than the diameter of the swollen cone of one-level, it can realize the object that obtains large expansion-ratio expansion pipe, and large expansion rate can provide more big hole, its expansion having stable behavior, effectively guarantee expansion process reliability, this variable radial expanding cone can be realized single diameter bore hole plugging effect, can be used as the emergent bushing pipe of drilling well, does not affect well drilling pipe column sequence; Have again, be connected to the locking of swollen cone point claw and a swollen cone lock mandrel for central tube lower end, by expansion tube with suppress tubing string grappling, it can accurately locate expansion tube position, guarantees construction reliability.
Two, expansion tube completion tool of the present invention, its variable radial expanding cone is by one-level hydraulic cylinder and its combining structure of Compounded rubber plug control, in the process of suppressing in water filling, the jump-ring slot of the one-level hydraulic cylinder of one-level fluid cylinder is locked on the jump ring of first stage piston, realized one-level fluid cylinder has been locked in to the object on central tube, thereby variable radial expanding cone is locked between the swollen cone of one-level and the support ring of central tube, makes the variable radial expanding wimble structure after combination more stable; Compounded rubber plug adopts rupture disk structure, and pressure control is more reliable.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the embodiment of the present invention, below the accompanying drawing of required use during embodiment is described is briefly described, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skills, do not paying under the prerequisite of creative work, can also obtain according to these accompanying drawings other accompanying drawing.
Fig. 1 is the structural representation of expansion tube completion tool of the present invention.
The specific embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, obviously, described embodiment is only the present invention's part embodiment, rather than whole embodiment.Based on the embodiment in the present invention, those of ordinary skills, not making the every other embodiment obtaining under creative work prerequisite, belong to the scope of protection of the invention.
As shown in Figure 1, the invention provides a kind of expansion tube completion tool, it comprises the swollen cone 4 of expansion tube 1, central tube 2, one-level fluid cylinder 3 and one-level, wherein: the lower end of expansion tube 1 is connected with float shoe 11; Central tube 2 is located in described expansion tube 1, and the lower end of described central tube 2 is connected with swollen cone locking point claw 21 and swollen cone lock mandrel 22 in turn, and the upper end of described central tube 2 offers the first perforation 23; One-level fluid cylinder 3 is set in described central tube 2 and offers described the first perforation position of 23; One-level is swollen, and cone 4 is set on described central tube 2, the lower end of described one-level is swollen cone 4 is positioned at described one-level fluid cylinder 3, and the lower end of described one-level is swollen cone 4 is provided with variable radial expanding cone 5, and described variable radial expanding cone 5 is set on described central tube 2.
Specifically, expansion tube 1 is cylindrical tube substantially, and its lower end is connected with float shoe 11.In the present invention, between expansion tube 1 and float shoe 11, be connected with variable buckle pipe nipple 12, the upper end outside screw of variable buckle pipe nipple 12 is connected to the inner side, lower end of expansion tube 1, the lower end inside thread of variable buckle pipe nipple 12 is connected to the outside, upper end of float shoe 11, and the inside wall of this variable buckle pipe nipple 12 radially inwardly convexes with ring fin 121.
Central tube 2 is cylindrical tube substantially, offers the lower end that the first perforation 23 and the second perforation 24, the second perforation 24 are positioned at the first perforation 23 on its upper end sidewall, on the lower end sidewall of central tube 2, radially outward convexes with support ring 25; The upper end of central tube 2 is by variable buckle pipe nipple 6 drilling rod 7 that has been threaded, its lower end outside screw is connected to the inner side, upper end of swollen cone locking point claw 21, in the present invention, the lower end of swollen cone locking point claw 21 has multiple spaced locking jaws 211, the lower end of each locking jaw 211 radially outward convexes with fixture block 212, a swollen cone locking point claw 21 be located in variable buckle pipe nipple 12 interior after, the fixture block 212 of its locking jaw 211 is fastened on ring fin 121 lower ends of variable buckle pipe nipple 12 just.Swollen cone lock mandrel 22 sealings are arranged in variable buckle pipe nipple 12, and its upper end is located in the locking jaw 211 of swollen cone locking point claw 21, and are connected with a swollen cone locking point claw 21 by shear pin 221.
One-level fluid cylinder 3 is set in central tube 2 and is provided with the position of the first perforation 23, in the present invention, one-level fluid cylinder 3 comprises one-level hydraulic cylinder 31 and one-level fluid cylinder cylinder body 32, one-level hydraulic cylinder 31 and one-level fluid cylinder cylinder body 32 are all set on central tube 2, the lower end outside screw of one-level hydraulic cylinder 31 is connected to the inner side, upper end of one-level fluid cylinder cylinder body 32, thereby be formed with one-level container cavity 33 between one-level fluid cylinder cylinder body 32 and one-level hydraulic cylinder 31, the sheathed first stage piston 34 that is connected with on central tube 2, this first stage piston 34 is arranged in one-level container cavity 33, first perforation 23 of offering on central tube 2 is connected with the one-level container cavity 33 of first stage piston 34 lower ends.Further, in the present embodiment, the outside, upper end of first stage piston 34 is provided with jump ring 341, the lower end of one-level hydraulic cylinder 31 offers jump-ring slot 311, when suppressing from ground to the interior water filling of central tube 2, injected water flows in one-level container cavity 33 from the first perforation 23 of central tube 2, under the effect of water injection pressure, one-level fluid cylinder cylinder body 32 drives one-level hydraulic cylinder 31 axially to move down, until the jump-ring slot 311 of one-level hydraulic cylinder 31 is fastened on the jump ring 341 of first stage piston 34, now one-level fluid cylinder 3 is locked on central tube 2.
One-level is swollen, and cone 4 is set on central tube 2, and it is positioned at the lower end of one-level fluid cylinder 3; Variable radial expanding cone 5 is set on central tube 2, it is between the swollen cone 4 of one-level and the support ring 25 of central tube 2, and in the present invention, variable radial expanding cone 5 comprises epicone seat 51, swollen cone distinguish 52 and lower cone seat 53, wherein: epicone seat 51 is set on central tube 2, its upper end contact is in the lower end of the swollen cone 4 of one-level; Swollen cone distinguish 52 is comprised of multiple upper distinguish 521 and multiple lower distinguish 522, one end of upper distinguish 521 is connected with epicone seat 51, one end of lower distinguish 522 is connected with lower cone seat 53, lower cone seat 53 is positioned on the support ring 25 of central tube 2, multiple upper distinguish 521 are along the circumferential direction crisscross arranged with multiple lower distinguish 522, and can be combined into a swollen cone, the swollen cone diameter after the plurality of upper distinguish 521 combines with multiple lower distinguish 522 is greater than the diameter of the swollen cone 4 of one-level relative sliding.This variable radial expanding cone 5 before expansion tube is lowered in unswollen state, making tubing string be lowered to diameter in the process of open hole well minimizes, reduce and be lowered to the risk that is hampered, simultaneously, after 5 combinations of variable radial expanding cone, it can provide than the larger swell diameter of swollen cone 4 swell diameters of one-level, meets the requirement of the larger expansion rate of expansion tube acquisition.
The course of work of this expansion tube completion tool is as follows: first, to after the combination of expansion tube completion tool, be lowered in open hole well, after tubing string puts in place, circulating mud, now from well head, dropping into Compounded rubber plug 9 well cementation waits solidifying, in the present invention, this Compounded rubber plug 9 comprises plug seat 91, the middle part of plug seat 91 offers through hole 911, the outside, upper end of plug seat 91 is arranged with plug 92, its lower end is connected with rubber ball cover 93, these rubber ball cover 93 inner seats are provided with ball 931, the through hole 911 upper end sealings of this plug seat 91 are provided with rupture disk 912, the outside, lower end of plug seat 91 convexes with plug jump ring 914, plug 9 shutoff to be composite are behind the lower end of central tube 2, beginning is suppressed from ground water filling, this water injection pressure is 25～27MPa, injected water flows in central tube 2 by drilling rod 7, and inject the one-level container cavity 33 of one-level fluid cylinders 3 from the first perforation 23 of central tube 2, now, the one-level fluid cylinder cylinder body 32 of one-level fluid cylinder 3 axially moves down drive one-level hydraulic cylinder 31, until the jump ring 341 of first stage piston 34 is fastened in the jump-ring slot 311 of one-level hydraulic cylinder 31, one-level fluid cylinder 3 is locked on central tube 2, wherein, one-level fluid cylinder 3, in the process axially moving down, to pressing down, makes the upper distinguish 521 of variable radial expanding cone 5 combine and form a complete swollen cone with the lower distinguish 522 of variable radial expanding cone 5 the upper distinguish 521 of variable radial expanding cone 5, after treating 5 combinations of variable radial expanding cone, continuation is suppressed from ground water filling, this water injection pressure is 30～32MPa, under this water injection pressure, rupture disk 912 explosions of Compounded rubber plug 9, injected water enters from the through hole 911 of Compounded rubber plug 9, and then promoting seat, to be located at ball 931 in rubber tee 93 descending, and ball 931 is fallen in swollen cone lock mandrel 22, now, from ground, continuing water filling suppresses, under the effect of water injection pressure, the shear pin 221 being connected between swollen cone lock mandrel 22 and swollen cone locking point claw 21 is cut off, swollen cone lock mandrel 22 is descending, the locking jaw 211 of swollen cone locking point claw 21 is established the card of the ring fin 121 of throwing off variable buckle pipe nipple 12 and move axially, injected water flows in the annular space 13 between expansion tube 1 and swollen cone locking point claw 21, the pressure-acting of injected water is on the support ring 25 of central tube 2, thereby promote support ring 25, variable radial expanding cone 5 and one-level are swollen cone 4 moves on axially, realize the object of expansion expansion tube 1.
Expansion tube completion tool of the present invention, adopt the swollen cone 4 of one-level and variable radial expanding to bore 5 expansion expansion tubes 1, one-level is swollen, and 4 pairs of expansion tubes 1 of cone expand in advance, variable radial expanding cone 5 when not combining its swollen cone distinguish 52 in released state, it is little that variable radial expanding is bored 5 diameters, and without wealthy footpath, it can be with in the smooth lower going-into-well of the swollen cone 4 of one-level, so that tubing string is lowered to diameter in the process of open hole well, minimize, reduce and be lowered to the risk that is hampered; In addition, variable radial expanding cone 5 is after combination reducing, its diameter is greater than the diameter of the swollen cone 4 of one-level, it can realize the object that obtains large expansion-ratio expansion pipe 1, and large expansion rate can provide more big hole, its expansion having stable behavior, effectively guarantee expansion process reliability, this variable radial expanding cone 5 can be realized single diameter bore hole plugging effect, can be used as the emergent bushing pipe of drilling well, does not affect well drilling pipe column sequence; Have again, be connected to the locking of swollen cone point claw 21 and a swollen cone lock mandrel 22 for central tube 2 lower ends, by expansion tube 1 with suppress tubing string grappling, it can accurately locate expansion tube 1 position, guarantees construction reliability.
Expansion tube completion tool of the present invention, its variable radial expanding cone 5 is controlled its combining structure by one-level hydraulic cylinder 3 and Compounded rubber plug 9, in the process of suppressing in water filling, the jump-ring slot 311 of the one-level hydraulic cylinder 31 of one-level fluid cylinder 3 is locked on the jump ring 341 of first stage piston 34, realized one-level fluid cylinder 3 has been locked in to the object on central tube 1, thereby variable radial expanding cone 5 is locked between the swollen cone 4 of one-level and the support ring 25 of central tube 2, makes variable radial expanding after combination bore 5 structures more stable; Compounded rubber plug 9 adopts rupture disk 912 structures, and pressure control is more reliable.
According to an embodiment of the invention, described expansion tube completion tool also comprises secondary fluid cylinder 8, and this secondary fluid cylinder 8 is set in central tube 2 and offers the position of the second perforation 24, and it is between one-level fluid cylinder 3 and the swollen cone 4 of one-level.In the present invention, secondary fluid cylinder 8 is comprised of secondary fluid cylinder cylinder body 81 and second piston 82, the upper end inside thread of secondary fluid cylinder cylinder body 81 is connected to the inner side, lower end of one-level fluid cylinder cylinder body 32, thereby be formed with secondary container cavity 83 between secondary fluid cylinder cylinder body 81 and one-level fluid cylinder cylinder body 32, second piston 82 is sheathed to be connected on central tube 2, it is arranged in secondary container cavity 83, and second perforation 24 of offering on central tube 2 is connected with the secondary container cavity 83 of second piston 82 lower ends.When suppressing from ground to the interior water filling of central tube 2, injected water flows in secondary container cavity 83 from the second perforation 24 of central tube 2, under the effect of water injection pressure, secondary fluid cylinder cylinder body 81 drives one-level fluid cylinder cylinder body 32 axially to move down, and one-level fluid cylinder cylinder body 32 drives one-level hydraulic cylinder 31 axially to move down, until the jump-ring slot 311 of one-level hydraulic cylinder 31 is fastened on the jump ring 341 of first stage piston 34, now one-level fluid cylinder 3 is locked on central tube 2.
The setting of this secondary fluid cylinder 8, is mainly in order to reduce water injection pressure, while avoiding only adopting one-level fluid cylinder 3 to realize the combination of variable radial expanding cone 5, needs too high water injection pressure, and affects the work of Compounded rubber plug 9 rupture disks 912.
According to an embodiment of the invention, on described central tube 2, be arranged with dust ring 10, described dust ring 10 is positioned at the upper end of described one-level fluid cylinder 3.This dust ring 10 enters in expansion tube 1 for preventing the impurity such as dust, and pollutes expansion tube inwall.
The foregoing is only several embodiments of the present invention, those skilled in the art can carry out various changes or modification and not depart from the spirit and scope of the present invention the embodiment of the present invention according to the disclosed content of application documents.
Claims (12)
1. an expansion tube completion tool, is characterized in that, described expansion tube completion tool comprises:
Expansion tube, its lower end is connected with float shoe;
Central tube, it is located in described expansion tube, and the lower end of described central tube is connected with swollen cone locking point claw and swollen cone lock mandrel in turn, and the upper end of described central tube offers the first perforation;
One-level fluid cylinder, it is set in described central tube and offers the described first position of boring a hole;
One-level is swollen cone, it is set on described central tube, the lower end of described one-level is swollen cone is positioned at described one-level fluid cylinder, the lower end of the swollen cone of described one-level is provided with variable radial expanding cone, and described variable radial expanding tapered sleeve is located on described central tube.
2. expansion tube completion tool as claimed in claim 1, it is characterized in that, described expansion tube completion tool also comprises secondary fluid cylinder, the upper end of described central tube offers the second perforation, described the second perforation is positioned at the lower end of described the first perforation, described secondary fluid cylinder is set in described central tube and offers described biperforate position, and it is between described one-level fluid cylinder and the swollen cone of described one-level.
3. expansion tube completion tool as claimed in claim 1, it is characterized in that, described one-level fluid cylinder comprises one-level hydraulic cylinder and is connected to the one-level fluid cylinder cylinder body of described one-level hydraulic cylinder lower end, between described one-level fluid cylinder cylinder body and described one-level hydraulic cylinder, be formed with one-level container cavity, the sheathed first stage piston that is connected with on described central tube, described first stage piston is arranged in described one-level container cavity.
4. expansion tube completion tool as claimed in claim 3, is characterized in that, the outside, upper end of described first stage piston is provided with jump ring, and the lower end of described one-level hydraulic cylinder offers jump-ring slot, and described jump ring matches with described jump-ring slot.
5. expansion tube completion tool as claimed in claim 2, it is characterized in that, described secondary fluid cylinder has secondary fluid cylinder cylinder body, described secondary fluid cylinder cylinder body is connected to the lower end of described one-level fluid cylinder, between described secondary fluid cylinder cylinder body and described one-level fluid cylinder, be formed with secondary container cavity, the sheathed second piston that is connected with on described central tube, described second piston is arranged in described secondary container cavity.
6. expansion tube completion tool as claimed in claim 1, is characterized in that, a described swollen cone locking point claw is connected with described swollen cone lock mandrel by shear pin.
7. expansion tube completion tool as claimed in claim 1, is characterized in that, the lower end of described expansion tube is connected with variable buckle pipe nipple, and described float shoe is connected on described variable buckle pipe nipple, and described swollen cone lock mandrel is located in described variable buckle pipe nipple.
8. expansion tube completion tool as claimed in claim 1, is characterized in that, described variable radial expanding cone comprises:
Epicone seat, it is set on described central tube, and described epicone seat contact is in the lower end of the swollen cone of described one-level;
Swollen cone distinguish, it has multiple upper distinguish and multiple lower distinguish, and one end of described upper distinguish is connected with described epicone seat, and described multiple upper distinguish and described multiple lower distinguish are along the circumferential direction crisscross arranged, and can be combined into a swollen cone relative sliding;
Lower cone seat, it is connected with described lower distinguish.
9. expansion tube completion tool as claimed in claim 1, is characterized in that, the lower end of described central tube radially outward convexes with support ring, and the lower end of described variable radial expanding cone is positioned on described support ring.
10. expansion tube completion tool as claimed in claim 1, it is characterized in that, in described central tube, be equipped with Compounded rubber plug, described Compounded rubber plug comprises plug seat, and described plug seat has through hole, and the outside, upper end of described plug seat is arranged with plug, its lower end is connected with rubber ball cover, described rubber ball cover inner seat is provided with ball, and the through hole upper end sealing of described plug seat is provided with rupture disk, and the outside, lower end of described plug seat convexes with plug jump ring.
11. expansion tube completion tools as claimed in claim 1, is characterized in that, on described central tube, be arranged with dust ring, described dust ring is positioned at the upper end of described one-level fluid cylinder.
12. expansion tube completion tools as claimed in claim 1, is characterized in that, the upper end of described central tube is connected with drilling rod.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751313.6A CN103742092A (en) | 2013-12-31 | 2013-12-31 | Expansion pipe completion tool |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310751313.6A CN103742092A (en) | 2013-12-31 | 2013-12-31 | Expansion pipe completion tool |
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| CN103742092A true CN103742092A (en) | 2014-04-23 |
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| CN201310751313.6A Pending CN103742092A (en) | 2013-12-31 | 2013-12-31 | Expansion pipe completion tool |
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Cited By (4)
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| CN106761545A (en) * | 2017-02-28 | 2017-05-31 | 中国石油天然气股份有限公司 | Oil and gas well cementing pipe column and cementing method |
| CN108119069A (en) * | 2017-12-21 | 2018-06-05 | 中国石油天然气集团公司 | The device transferred for tubing string in expansion tube bore hole system |
| CN108240205A (en) * | 2016-12-24 | 2018-07-03 | 中石化石油工程技术服务有限公司 | Down-hole casing twin-stage bores expansion device and its operational method |
| CN111379534A (en) * | 2018-12-27 | 2020-07-07 | 中国石油天然气股份有限公司 | Casing pipe plugging method |
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| CN203729929U (en) * | 2013-12-31 | 2014-07-23 | 中国石油天然气股份有限公司 | Expansion pipe completion tool |
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Application publication date: 20140423 |