CN204532229U - Meet water self-expanding external packer of pipe - Google Patents
Meet water self-expanding external packer of pipe Download PDFInfo
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- CN204532229U CN204532229U CN201520036627.2U CN201520036627U CN204532229U CN 204532229 U CN204532229 U CN 204532229U CN 201520036627 U CN201520036627 U CN 201520036627U CN 204532229 U CN204532229 U CN 204532229U
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- water
- central tube
- packing element
- sheathed
- expansion loop
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 62
- 238000012856 packing Methods 0.000 claims abstract description 109
- 230000007246 mechanism Effects 0.000 claims abstract description 29
- 230000004224 protection Effects 0.000 claims description 33
- 230000001105 regulatory effect Effects 0.000 claims description 21
- 210000002445 nipple Anatomy 0.000 claims description 16
- 229920000459 Nitrile rubber Polymers 0.000 claims description 7
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 230000001788 irregular Effects 0.000 abstract description 11
- 238000007789 sealing Methods 0.000 abstract description 6
- 229920001971 elastomer Polymers 0.000 description 10
- 239000005060 rubber Substances 0.000 description 10
- 230000000694 effects Effects 0.000 description 8
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 5
- 239000003129 oil well Substances 0.000 description 4
- 230000008439 repair process Effects 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 230000018109 developmental process Effects 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 2
- 229910052802 copper Inorganic materials 0.000 description 2
- 239000010949 copper Substances 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000001276 controlling effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000009545 invasion Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 230000011218 segmentation Effects 0.000 description 1
- 238000005204 segregation Methods 0.000 description 1
- 230000007480 spreading Effects 0.000 description 1
- 235000020681 well water Nutrition 0.000 description 1
- 239000002349 well water Substances 0.000 description 1
Landscapes
- Pipe Accessories (AREA)
Abstract
The utility model discloses a kind of chance water self-expanding external packer of pipe, it comprises: central tube, and it has upper and lower two ends, and the two ends up and down of described central tube are installed with the first abutting part and the second abutting part respectively; First water-swellable packing element, it is sheathed on outside described central tube; Second water-swellable packing element, it is sheathed on outside described central tube, and abuts against with the upper end of described first water-swellable packing element; 3rd water-swellable packing element, is sheathed on outside described central tube, and abuts against with the lower end of described first water-swellable packing element; First protrusion-dispelling mechanism, it is set in outside described central tube, and is arranged between described second water-swellable packing element and described first abutting part; Second protrusion-dispelling mechanism, it is set in outside described central tube, and is arranged between described 3rd water-swellable packing element and described second abutting part.This chance water self-expanding external packer of pipe can realize packing to irregular borehole, and it has good sealing and bearing capacity.
Description
Technical field
The utility model relates to field of oilfield exploitation, and particularly one meets water self-expanding external packer of pipe.
Background technology
Horizontal well technology starts from the eighties in 20th century, is a comprehensive supporting technology, is mainly used in improving Oil/gas Well well yield and recovery ratio in oil field development.Because country starts to pay attention to the exploration and development to the unconventionaloil pool such as shale gas, compact sandstone gas Tibetan resource, horizontal well drilling technology obtains applying more and more widely because it can significantly promote the development efficiency of this kind of oil-gas reservoir.Utilize horizontal well to improve oil well productivity and recovery ratio, become a kind of cost-effective means and the approach of taping the latent power in oil field.But, improve in oil well productivity and recovery ratio process utilizing horizontal well, it is the principal element restricting horizontal well stable high yield that edge and bottom water invasion, well water rise too fast, and effective staged isolation is the key solving this problem, must study that reliability is high, cost is low, can adapt to the chance water self-expanding external packer of pipe of bore hole environment, and in horizontal well, control the technique of water blocking water.
At present, oil field thin oil horizontal well is on the one hand because the horizontal segment of horizontal well is longer, cause on net horizontal section because sedimentation is uneven on the one hand in addition and there is anisotropy, so make oil field thin oil horizontal well completion technology take the modes such as barefoot completion, gravel pack completion, cutting seam sieve tube completion and well cementation perforation completion more.Conventional external packer of pipe many employings expanding external packer of pipe, expanding external packer of pipe needs hydraulic setting, and then enters setting tool under needing or pitching is suppressed, and therefore uses expanding external packer of pipe to need many one flow charts.Secondly, expanding external packer of pipe requires higher to the well of sealing, the general comparison rule of well, but when running into the well after collapsing, affected because well collapses, its wall is comparatively irregular smooth, conventional external packer of pipe all can not meet segregation requirement, cannot ensure sealing.
Utility model content
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model there is provided a kind of chance water self-expanding external packer of pipe, and it can solve the problem in irregular borehole seal performance difference.
Concrete technical scheme of the present utility model is:
A kind of chance water self-expanding external packer of pipe, it is characterized in that, it comprises: central tube, and it has upper and lower two ends, and the two ends up and down of described central tube are installed with the first abutting part and the second abutting part respectively; First water-swellable packing element, it is sheathed on outside described central tube; Second water-swellable packing element, it is sheathed on outside described central tube, and abuts against with the upper end of described first water-swellable packing element; 3rd water-swellable packing element, is sheathed on outside described central tube, and abuts against with the lower end of described first water-swellable packing element; First protrusion-dispelling mechanism, it is set in outside described central tube, and is arranged between described second water-swellable packing element and described first abutting part; Second protrusion-dispelling mechanism, it is set in outside described central tube, and is arranged between described 3rd water-swellable packing element and described second abutting part.
Preferably, the expansion rate of described first water-swellable packing element is higher than the expansion rate of described second water-swellable packing element and described 3rd water-swellable packing element.
Preferably, the intensity of described first water-swellable packing element is lower than the intensity of described second water-swellable packing element and described 3rd water-swellable packing element.
Preferably; described first protrusion-dispelling mechanism comprises the 3rd expansion loop be sheathed on outside described central tube, the first protection ring be sheathed on described 3rd expansion loop, and described second protrusion-dispelling mechanism comprises the 6th expansion loop be sheathed on outside described central tube, the second protection ring be set on described 6th expansion loop.
Preferably, described first protection ring and described second protection ring are annular, are made of metal, and its outer wall offers many seams for distending along the above-below direction of described central tube.
Preferably, described first protrusion-dispelling mechanism comprises the second expansion loop be sheathed on outside described central tube, the second joint ring be sheathed on described second expansion loop, described second protrusion-dispelling mechanism comprises the 5th expansion loop be sheathed on outside described central tube, the 4th joint ring be set on described 5th expansion loop, and described second joint ring and described 4th joint ring are made up of acrylonitrile-butadiene rubber.
Preferably, described first protrusion-dispelling mechanism comprises the first expansion loop be sheathed on outside described central tube, the first joint ring be sheathed on described first expansion loop, described second protrusion-dispelling mechanism comprises the 4th expansion loop be sheathed on outside described central tube, the 3rd joint ring be sheathed on described 4th expansion loop, and described first joint ring and described 3rd joint ring are made up of acrylonitrile-butadiene rubber.
Preferably, it also comprise be connected to described central tube upper end the first casing nipple, for connecting the first joint of described central tube and described first casing nipple, described first abutting part comprises the first regulating part be arranged on described first joint.
Preferably, described first regulating part is provided with the first fixture for preventing described first regulating part and described first joint from rotating.
Preferably, it also comprise be connected to described central tube upper end the second casing nipple, for connecting the second joint of described central tube and described second casing nipple, described second abutting part comprises the second regulating part be arranged on described second joint.
The utility model has following remarkable beneficial effect:
The different performance of 1, meeting water self-expanding external packer of pipe design packing element be of value to packing element better and the bore hole borehole wall fit, play sealing function.The first high expansion rate of meeting water self-expanding packing element can automatic filling irregular borehole, and automatic repair ability is strong, is suitable for the packing of irregular borehole.The intensity that second chance water self-expanding packing element, second meets water self-expanding packing element is higher, and can improve the bearing capacity of overall packer, the borehole wall of more fitting after this packer inflation, finally realizes oil well subsection efect.
The two ends of 2, meeting water self-expanding external packer of pipe have employed anti-lug structure step by step, and this kind of structure can increase substantially bearing capacity.In this chance water self-expanding external packer of pipe, it is comparatively large that the first protection ring and the second protection ring expand rear intensity, plays first protective effect.The intensity of the first joint ring, the second joint ring, the 3rd joint ring and the 4th joint ring, higher than chance water self-expanding rubber, forms second and the 3rd pipe protection effect at two ends after distending respectively.So three pipe protection effects are effectively served to the first water-swellable packing element, the second water-swellable packing element and the 3rd water-swellable packing element, the bearing capacity of meeting water self-expanding external packer of pipe can be increased substantially.
3, meet water self-expanding external packer of pipe structure simple, reliability is high, and simplifies well-completing process construction process, reduces operating cost, reduces operating cost, improves completion efficiency.Simultaneously for next step staged fracturing, segmentation are recovered the oil and provided precondition.
Accompanying drawing explanation
Accompanying drawing described here only for task of explanation, and is not intended to limit the utility model scope of disclosure by any way.In addition, the shape of each parts in figure and proportional sizes etc. are only schematic, for helping understanding of the present utility model, are not the shape and the proportional sizes that specifically limit each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shape and proportional sizes to implement the utility model as the case may be.
Fig. 1 is the structural representation that the utility model meets water self-expanding external packer of pipe top.
Fig. 2 is the structural representation that the utility model meets water self-expanding external packer of pipe bottom.
Fig. 3 is the partial enlarged drawing that the utility model meets A place, water self-expanding external packer of pipe top.
Fig. 4 is the partial enlarged drawing that the utility model meets B place, water self-expanding external packer of pipe bottom.
The Reference numeral of above accompanying drawing: 1, central tube; 2, the first water-swellable packing element; 31, the second water-swellable packing element; 32, the 3rd water-swellable packing element; 41, the first joint ring; 42, the first expansion loop; 51, the second joint ring; 52, the second expansion loop; 61, the first protection ring; 62, the 3rd expansion loop; 7, the first regulating part; 71, the first fixture; 8, the first joint; 9, the first casing nipple; 101, the 3rd joint ring; 102, the 4th expansion loop; 111, the 4th joint ring; 112, the 5th expansion loop; 121, the second protection ring; 122, the 6th expansion loop; 131, the second regulating part; 132, the second fixture; 14, the second joint; 15, the second casing nipple; 16, box cupling.
Detailed description of the invention
By reference to the accompanying drawings with the description of the utility model detailed description of the invention, can clearly understand details of the present utility model.But detailed description of the invention of the present utility model described here, only for explaining the purpose of this utility model, and can not to be understood as by any way be to restriction of the present utility model.Under instruction of the present utility model, technician can conceive based on distortion possible arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
Fig. 1 is the structural representation that the utility model meets water self-expanding external packer of pipe top, Fig. 2 is the structural representation that the utility model meets water self-expanding external packer of pipe bottom, as depicted in figs. 1 and 2, a kind of chance water self-expanding external packer of pipe, it comprises central tube 1, it has upper and lower two ends, and the two ends up and down of central tube 1 are installed with the first abutting part and the second abutting part respectively; First water-swellable packing element 2, it is sheathed on outside central tube 1; Second water-swellable packing element 31, it is sheathed on outside central tube 1, and abuts against with the upper end of the first water-swellable packing element 2; 3rd water-swellable packing element 32, is sheathed on outside central tube 1, and abuts against with the lower end of the first water-swellable packing element 2; First protrusion-dispelling mechanism, it is set in outside central tube 1, and is arranged between the second water-swellable packing element 31 and the first abutting part; Second protrusion-dispelling mechanism, it is set in outside central tube 1, and is arranged between the 3rd water-swellable packing element 32 and the second abutting part.
Specifically, the central tube 1 of meeting in water self-expanding external packer of pipe has upper and lower two ends, its upper and lower two ends tube wall all has the screw thread for connecting.The first water-swellable packing element 2, second water-swellable packing element 31 and the 3rd water-swellable packing element 32 is arranged with outside central tube 1, first water-swellable packing element 2 is positioned at the medium position of central tube 1, second water-swellable packing element 31 is positioned at the top of the first water-swellable packing element 2,3rd water-swellable packing element 32 is positioned at the below of the first water-swellable packing element 2, and three is closely set on central tube 1 successively.Wherein, the expansion rate of the first water-swellable packing element 2 is higher than the expansion rate of the second water-swellable packing element 31 and the 3rd water-swellable packing element 32; The intensity of the first water-swellable packing element 2 is lower than the expansion rate of the second water-swellable packing element 31 and the 3rd water-swellable packing element 32.First water-swellable packing element 2 adopts high expansion rate, low intensive hydro-expansive rubber is made, second water-swellable packing element 31 and the 3rd water-swellable packing element 32 adopt low thermal expansion, the hydro-expansive rubber of high strength is made, so, the high expansion rate of the first water-swellable packing element 2 can automatic filling irregular borehole, its repair ability is strong, go for the packing of various irregular borehole, second water-swellable packing element 31 and the 3rd water-swellable packing element 32 lay respectively at the both sides up and down of the first water-swellable packing element 2, its intensity is higher, the bearing capacity of meeting water self-expanding external packer of pipe can be ensured.
Fig. 3 is the partial enlarged drawing that the utility model meets A place, water self-expanding external packer of pipe top, Fig. 4 is the partial enlarged drawing that the utility model meets B place, water self-expanding external packer of pipe bottom, as shown in Figure 3 and Figure 4, above the second water-swellable packing element 31, be provided with the first protrusion-dispelling mechanism, below is provided with the second protrusion-dispelling mechanism.First protrusion-dispelling mechanism comprises the 3rd expansion loop 62 be sheathed on outside described central tube 1, be sheathed on the first protection ring 61 on the 3rd expansion loop 62 or be sheathed on the second expansion loop 52 outside central tube 1, be sheathed on the second joint ring 51 on the second expansion loop 52 or be sheathed on the first expansion loop 42 outside central tube 1, be sheathed on the first joint ring 41 on the first expansion loop 42 or its any combination.Second protrusion-dispelling mechanism comprises the 4th expansion loop 102 be sheathed on outside central tube 1, be sheathed on the 3rd joint ring 101 on the 4th expansion loop 102 or be sheathed on the 6th expansion loop 122 outside central tube 1, be set in the second protection ring 121 on the 6th expansion loop 122 or be sheathed on the 5th expansion loop 112 outside central tube 1, be set in the 4th joint ring 111 on the 5th expansion loop 112 or its any combination.Preferably; first protrusion-dispelling mechanism comprise arrange from top to bottom successively be sheathed on the first expansion loop 42 outside central tube 1, the first joint ring 41 be sheathed on the first expansion loop 42; be sheathed on the second expansion loop 52 outside central tube 1, the second joint ring 51 be sheathed on the second expansion loop 52, be sheathed on the 3rd expansion loop 62 outside described central tube 1, the first protection ring 61 be sheathed on the 3rd expansion loop 62.Second protrusion-dispelling mechanism comprise arrange from top to bottom be sheathed on the 4th expansion loop 102 outside described central tube 1, the 3rd joint ring 101 be sheathed on described 4th expansion loop 102; be sheathed on the 5th expansion loop 112 outside described central tube 1, the 4th joint ring 111 be set on described 5th expansion loop 112, be sheathed on the 6th expansion loop 122 outside described central tube 1, the second protection ring 121 be set on described 6th expansion loop 122.The two ends up and down of central tube 1 are installed with the first abutting part and the second abutting part respectively, both are for being fixedly installed on the first expansion loop 42, second expansion loop 52, the 3rd expansion loop 62, the 4th expansion loop 102, the 5th expansion loop 112, the 6th expansion loop 122, first water-swellable packing element 2, second water-swellable packing element 31, the 3rd water-swellable packing element 32 between the two, prevent them from downward shift occurring.First expansion loop 42, second expansion loop 52, the 3rd expansion loop 62, the 4th expansion loop 102, the 5th expansion loop 112 and the 6th expansion loop 122 are made up of chance water self-expanding rubber, and its cross section is trapezoidal, are wherein namely inclined-plane away from the end face in the middle part of central tube 1.First joint ring 41 is set on the first expansion loop 42 simultaneously, for wrapping the first expansion loop 42, second joint ring 51 is set on the second expansion loop 52, for wrapping the second expansion loop 52,3rd joint ring 101 is set on the 4th expansion loop 102, for wrapping the lateral wall of the 4th expansion loop 102, the 4th joint ring 111 is set on the 5th expansion loop 112, for wrapping the 5th expansion loop 112.First joint ring 41, second joint ring 51, the 3rd joint ring 101 and the 4th joint ring 111 are made up of acrylonitrile-butadiene rubber; the intensity of acrylonitrile-butadiene rubber is greater than meets water self-expanding rubber; after hydro-expansive rubber expands, the joint ring that acrylonitrile-butadiene rubber is made can form protective effect to expansion loop.First protection ring 61 and the second protection ring 121 are in circular, and wrap the outer wall of the 3rd expansion loop 62 and the 6th expansion loop 122 respectively, outer wall comprises the trapezoidal part in inclined-plane.First protection ring 61 and the second protection ring 121 are made of metal, and the above-below direction of its outer wall centrally pipe 1 offers many seams for spreading.First protection ring 61 and the second protection ring 121 can be stamped to form by copper sheet; and offer the finedraw for distending at the above-below direction of circular outer wall centrally pipe 1; because red copper has good ductility; then wrap the 3rd expansion loop 62 and the 6th expansion loop 122 after being easy to its distending, thus play a protective role.The two ends of meeting water self-expanding external packer of pipe have employed anti-lug structure step by step, and this kind of structure can increase substantially bearing capacity.In this chance water self-expanding external packer of pipe, it is comparatively large that the first protection ring 61 and the second protection ring 121 expand rear intensity, plays one protective effect.The intensity of the first joint ring 41, second joint ring 51, the 3rd joint ring 101 and the 4th joint ring 111, higher than chance water self-expanding rubber, forms two roads and three pipe protection effects after distending respectively at two ends.So three pipe protection effects are effectively served to the first water-swellable packing element 2, second water-swellable packing element 31 and the 3rd water-swellable packing element 32, the bearing capacity of meeting water self-expanding external packer of pipe can be increased substantially.
Operating principle of the present utility model is as follows:
Enter to appointment well section under this chance water self-expanding external packer of pipe, the temperature of down-hole, pressure and aqueous environment acting in conjunction are on packer.Through regular hour effect, the first expansion loop 42, second expansion loop 52, the 3rd expansion loop 62, the 4th expansion loop 102, the 5th expansion loop 112, the 6th expansion loop 122, first water-swellable packing element 2, second water-swellable packing element 31, the 3rd water-swellable packing element 32 start to expand by water effect.First first expansion loop 42, second expansion loop 52, the 3rd expansion loop 62, the 4th expansion loop 102, the 5th expansion loop 112, the 6th expansion loop 122 expand; form three pipe protections respectively up and down, the bearing capacity of meeting water self-expanding external packer of pipe can be increased substantially.Simultaneously; due to the existence of the first joint ring 41, second joint ring 51, the 3rd joint ring 101, the 4th joint ring 111, first protection ring 61 and the second protection ring 121; first protrusion-dispelling mechanism and the second protrusion-dispelling mechanism, while expansion packing, serve position-limiting action to the first water-swellable packing element 2, second water-swellable packing element 31, the 3rd water-swellable packing element 32.Afterwards, because the character of the first water-swellable packing element 2 and the second water-swellable packing element 31, the 3rd water-swellable packing element 32 is different, second water-swellable packing element 31 and the 3rd water-swellable packing element 32 expand, due to its adopt low thermal expansion, the hydro-expansive rubber of high strength makes, while playing packing effect upon inflation, ensure that the bearing capacity of meeting water self-expanding external packer of pipe.Finally, the first water-swellable packing element 2 expands packing, due to its adopt high expansion rate, low intensive hydro-expansive rubber makes, so, it can automatic filling irregular borehole, and repair ability is strong, ensure that the sealing of packing under irregular borehole.
The different performance of meeting water self-expanding external packer of pipe design packing element be of value to packing element better and the bore hole borehole wall fit, play sealing function.The first high expansion rate of meeting water self-expanding packing element can automatic filling irregular borehole, and automatic repair ability is strong, is suitable for the packing of irregular borehole.The intensity that second chance water self-expanding packing element, the 3rd meets water self-expanding packing element is higher, and can improve the bearing capacity of overall packer, the borehole wall of more fitting after this packer inflation, finally realizes oil well subsection efect.The two ends of meeting water self-expanding external packer of pipe have employed the first anti-lug structure and the second protrusion-dispelling mechanism; this kind of structure can serve good spacing and protective effect to the first water-swellable packing element 2, second water-swellable packing element 31 between them and the 3rd water-swellable packing element 32; also serve certain packing effect, and improve the bearing capacity of meeting water self-expanding external packer of pipe to a certain extent.Meet water self-expanding external packer of pipe to adopt and meet water self-expanding rubber and form, mechanical moving component, without the need under enter special setting tool or carry out special expansion operation, operation can be realized by one-trip string.This chance water self-expanding external packer of pipe structure is simple, and reliability is high, and simplifies well-completing process construction process, and it is met water and just completes packing step voluntarily, does not need other technological process, thus reduces operating cost, reduces operating cost, improves completion efficiency.
In a preferred embodiment, as shown in Figure 3 and Figure 4, meet water self-expanding external packer of pipe also comprise be connected to central tube 1 upper end the first casing nipple 9, for connect central tube 1 and described first casing nipple 9 the first joint 8, be connected to central tube 1 lower end the second casing nipple 15, for being connected the second joint 14 of described central tube 1 and described second casing nipple 15.First abutting part can be on the first joint 8 arrange the first regulating part 7, first regulating part 7 on and the first fixture 71 be provided with for preventing the first regulating part 7 and the first joint 8 from rotating.Second abutting part can be that the second regulating part 131, second regulating part 131 that the second joint 14 is arranged is provided with the second fixture 132 for preventing the second regulating part 131 and the second joint 14 from rotating.First regulating part 7 and the second regulating part 131 specifically female adjustable ring of tool, distance small when controlling relatively to connect between the first joint 8, second joint 14 and central tube 1 by tightening adjustable ring, the tolerance of length direction when assembling for regulating whole instrument, with make the first abutting part and the second abutting part respectively with the 3rd expansion loop 62, the inconsistent compression of the 6th expansion loop 122.First fixture 71 and the second fixture 132 can be pins, the sidewall of the first regulating part 7 and the second regulating part 131 offers through hole, pin is provided with in through hole, when the first joint 8, second joint 14 and central tube 1 are located by needs, pin is squeezed in the first joint 8 and the second joint 14, to reach location object.Box cupling 16, first casing nipple 9 for being connected with oil pipe can also being connected with above first casing nipple 9 except its connection function, for beating the position of elevator, so can being of value to site operation during construction at the scene.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above-described embodiment, only for technical conceive of the present utility model and feature are described, its object is to person skilled in the art can be understood content of the present utility model and implement according to this, can not limit protection domain of the present utility model with this.All equivalences done according to the utility model Spirit Essence change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (10)
1. meet a water self-expanding external packer of pipe, it is characterized in that, it comprises:
Central tube, it has upper and lower two ends, and the two ends up and down of described central tube are installed with the first abutting part and the second abutting part respectively;
First water-swellable packing element, it is sheathed on outside described central tube;
Second water-swellable packing element, it is sheathed on outside described central tube, and abuts against with the upper end of described first water-swellable packing element;
3rd water-swellable packing element, is sheathed on outside described central tube, and abuts against with the lower end of described first water-swellable packing element;
First protrusion-dispelling mechanism, it is set in outside described central tube, and is arranged between described second water-swellable packing element and described first abutting part;
Second protrusion-dispelling mechanism, it is set in outside described central tube, and is arranged between described 3rd water-swellable packing element and described second abutting part.
2. chance water self-expanding external packer of pipe according to claim 1, is characterized in that, the expansion rate of described first water-swellable packing element is higher than the expansion rate of described second water-swellable packing element and described 3rd water-swellable packing element.
3. chance water self-expanding external packer of pipe according to claim 1, is characterized in that, the intensity of described first water-swellable packing element is lower than the intensity of described second water-swellable packing element and described 3rd water-swellable packing element.
4. chance water self-expanding external packer of pipe according to claim 1; it is characterized in that; described first protrusion-dispelling mechanism comprises the 3rd expansion loop be sheathed on outside described central tube, the first protection ring be sheathed on described 3rd expansion loop, and described second protrusion-dispelling mechanism comprises the 6th expansion loop be sheathed on outside described central tube, the second protection ring be set on described 6th expansion loop.
5. chance water self-expanding external packer of pipe according to claim 4, is characterized in that, described first protection ring and described second protection ring are annular, are made of metal, and its outer wall offers many seams for distending along the above-below direction of described central tube.
6. chance water self-expanding external packer of pipe according to claim 1, it is characterized in that, described first protrusion-dispelling mechanism comprises the second expansion loop be sheathed on outside described central tube, the second joint ring be sheathed on described second expansion loop, described second protrusion-dispelling mechanism comprises the 5th expansion loop be sheathed on outside described central tube, the 4th joint ring be set on described 5th expansion loop, and described second joint ring and described 4th joint ring are made up of acrylonitrile-butadiene rubber.
7. chance water self-expanding external packer of pipe according to claim 1, it is characterized in that, described first protrusion-dispelling mechanism comprises the first expansion loop be sheathed on outside described central tube, the first joint ring be sheathed on described first expansion loop, described second protrusion-dispelling mechanism comprises the 4th expansion loop be sheathed on outside described central tube, the 3rd joint ring be sheathed on described 4th expansion loop, and described first joint ring and described 3rd joint ring are made up of acrylonitrile-butadiene rubber.
8. chance water self-expanding external packer of pipe according to claim 1, it is characterized in that, it also comprise be connected to described central tube upper end the first casing nipple, for connecting the first joint of described central tube and described first casing nipple, described first abutting part comprises the first regulating part be arranged on described first joint.
9. chance water self-expanding external packer of pipe according to claim 8, is characterized in that, described first regulating part is provided with the first fixture for preventing described first regulating part and described first joint from rotating.
10. chance water self-expanding external packer of pipe according to claim 1, it is characterized in that, it also comprise be connected to described central tube upper end the second casing nipple, for connecting the second joint of described central tube and described second casing nipple, described second abutting part comprises the second regulating part be arranged on described second joint.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520036627.2U CN204532229U (en) | 2015-01-20 | 2015-01-20 | Meet water self-expanding external packer of pipe |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520036627.2U CN204532229U (en) | 2015-01-20 | 2015-01-20 | Meet water self-expanding external packer of pipe |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204532229U true CN204532229U (en) | 2015-08-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520036627.2U Expired - Fee Related CN204532229U (en) | 2015-01-20 | 2015-01-20 | Meet water self-expanding external packer of pipe |
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| Country | Link |
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| CN (1) | CN204532229U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014328A (en) * | 2016-07-19 | 2016-10-12 | 大庆市华禹石油机械制造有限公司 | Self-expanding plugging device |
| CN107989568A (en) * | 2017-11-27 | 2018-05-04 | 李明 | A kind of multistage can desealed water-swelling packer and method |
| CN111720090A (en) * | 2020-06-03 | 2020-09-29 | 中国石油天然气股份有限公司 | Packer assembly capable of being unsealed and swelling in case of liquid |
| CN114057988A (en) * | 2020-08-04 | 2022-02-18 | 中国石油化工股份有限公司 | Heat-sensitive shape memory material and packer prepared from same |
-
2015
- 2015-01-20 CN CN201520036627.2U patent/CN204532229U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014328A (en) * | 2016-07-19 | 2016-10-12 | 大庆市华禹石油机械制造有限公司 | Self-expanding plugging device |
| CN106014328B (en) * | 2016-07-19 | 2018-10-09 | 徐海英 | From swollen plugging device |
| CN107989568A (en) * | 2017-11-27 | 2018-05-04 | 李明 | A kind of multistage can desealed water-swelling packer and method |
| CN107989568B (en) * | 2017-11-27 | 2019-11-22 | 东阳市天杨建筑工程设计有限公司 | A kind of multistage can desealed water-swelling packer and method |
| CN111720090A (en) * | 2020-06-03 | 2020-09-29 | 中国石油天然气股份有限公司 | Packer assembly capable of being unsealed and swelling in case of liquid |
| CN114057988A (en) * | 2020-08-04 | 2022-02-18 | 中国石油化工股份有限公司 | Heat-sensitive shape memory material and packer prepared from same |
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