CN105781479A - Outburst prevention device - Google Patents
Outburst prevention device Download PDFInfo
- Publication number
- CN105781479A CN105781479A CN201610250877.5A CN201610250877A CN105781479A CN 105781479 A CN105781479 A CN 105781479A CN 201610250877 A CN201610250877 A CN 201610250877A CN 105781479 A CN105781479 A CN 105781479A
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- CN
- China
- Prior art keywords
- wing plate
- prevention device
- bearing ring
- ring
- outburst prevention
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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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/12—Packers; Plugs
- E21B33/128—Packers; Plugs with a member expanded radially by axial pressure
Abstract
The invention discloses an outburst prevention device. A wing panel seals an annular space between a body and an inner surface of a shaft in a turnover manner. Thus, even though a rubber sleeve needs to be expanded to a larger size, the wing panel can also cover and support two ends of the rubber sleeve and is applicable to the situation that the annular space between the body and the inner surface of the shaft is larger. In addition, since the rubber sleeve can realize larger-size radial expansion, when a packer installed with the outburst prevention device is lowered down into the shaft, a larger gap can be guaranteed to exist between the rubber sleeve and the inner surface of the shaft, such that the packer is more easily lowered down into the shaft.
Description
Technical field
The present invention relates to for the outburst prevention device in pit shaft.
Background technology
In oil-gas mining process, it is necessary to pit shaft is blocked.Adopting packer during closure, packing element is set on tube-like piece, and packing element is with placing the position that down-hole need to block under tube-like piece.By extruder member, the two ends of packing element being pressed, packing element pressurized expanded radially, thus sealing and being incorporated into pit shaft inner surface, completes to set, thus realizing the purpose sealing and separating.
After packing element expanded radially, packing element external diameter is more than the external diameter of extruder member, and extruder member cannot effectively support packing element, and partial rubber can flow out between extruder member and pit shaft inner surface, causes that packing element is easily broken, the performance of impact packing simultaneously.Currently, mainly utilize bowl-shape anti-lug parcel packing element two ends to improve the problems referred to above.Bowl-shape anti-lug expands along with packing element and produces deformation, and after packing element seals and is incorporated into pit shaft inner surface, anti-lug hides packing element two ends, thus preventing rubber from flowing out.
But, existing anti-burst method, there is packing element expanded radially size little, the problem that packer not easily takes out from pit shaft.
Summary of the invention
It is an object of the invention to provide a kind of outburst prevention device, it possesses and can outwards overturn in radial directions, and the wing plate of the annulus between sealing extrusion ring and the inner surface of pit shaft.Packing element two ends are supported by wing plate, it is to avoid rubber flows out.This outburst prevention device does not affect the dilation dimension of packing element.Meanwhile, packing element can restore, consequently facilitating taken out from pit shaft by the packer being provided with this outburst prevention device.
Embodiments of the invention are achieved in that
Outburst prevention device, in the annulus that the inner surface of outer surface and pit shaft for being assemblied in tube-like piece limits.Outburst prevention device includes body and the wing plate of ring-type.What body slided is sheathed on tube-like piece.Multiple wing plates are arranged on one end of body, and multiple wing plates can the position of the turned-out annulus gone between enclosed body and the inner surface of pit shaft in radial directions.
In use, two relative being set on tube-like piece of outburst prevention device.Packing element is set on tube-like piece and between two outburst prevention devices.Wing plate on outburst prevention device is near the end face of packing element.Outside pressure acts on the body of outburst prevention device.Two outburst prevention devices are close to each other, and extrude packing element.The axial length of packing element shortens, expanded radially, until the inner surface being fitted in pit shaft that the periphery of packing element seals, completes to set, thus realizing the purpose sealing and separating.In packing element expansion process, the position of the wing plate turned-out annulus gone between enclosed body and the inner surface of pit shaft in radial directions.The part of the body exceeding outburst prevention device on packing element radial extension is stopped by wing plate, thus avoiding under high pressure, rubber flows out between body and pit shaft inner surface.Owing to the annulus between body and the inner surface of pit shaft is closed by wing plate by the mode overturn, even if so packing element needs to expand bigger size, wing plate also is able to that it is carried out two ends and hides and support, it is adaptable to the occasion that annulus between body and the inner surface of pit shaft is bigger.Simultaneously as packing element is capable of the expanded radially of large-size, therefore by when putting into pit shaft under the packer being provided with this outburst prevention device, it is possible to ensure that packing element exists bigger gap with pit shaft inner surface, make packer be easier to transfer to pit shaft.
In the existing method utilizing bowl-shape anti-lug to carry out protrusion-dispelling, after bowl-shape anti-lug deforms with packing element, bowl-shape anti-lug cannot be restored, and causes that packing element cannot restore.The lasting sealing of packing element is incorporated into pit shaft inner surface, causes that packer is difficult to from pit shaft and takes out.
This outburst prevention device, after outside distress resolves, the stress within packing element makes packing element possess the trend of axially recovery.Under the effect of packing element internal stress, the two ends of packing element promote the outburst prevention device being positioned at its two ends to be located remotely from each other, and the axial dimension of packing element increases, and radial dimension reduces, and packing element departs from the inner surface of pit shaft.So so that the packer being provided with this outburst prevention device is easily taken out from pit shaft.
In an embodiment of the present invention, body includes extrusion ring and bearing ring.Extrusion ring and bearing ring are sheathed on tube-like piece slidably, and the one end on wing plate width is articulated on extrusion ring.The upset of wing plate is driven by the relative motion between extrusion ring and bearing ring.
In an embodiment of the present invention, the upper surface of wing plate is resisted against on the outer peripheral face of bearing ring, and when extrusion ring and bearing ring are close to each other, bearing ring drives wing plate outwards to overturn in radial directions.
In an embodiment of the present invention, the pivot points place of wing plate and extrusion ring, it is provided with and makes the upper surface of wing plate be resisted against the torsion spring on the outer peripheral face of bearing ring.
In an embodiment of the present invention, body also includes multiple push rod being fixed on bearing ring, and push rod is slidably connected with wing plate by being opened in the sliding tray of wing plate upper surface.The axis of sliding tray and the axes intersect of tube-like piece.
In an embodiment of the present invention, body also includes locating part and connecting rod.Locating part is axially slidably arranged on tube-like piece, and locating part is between extrusion ring and bearing ring.Multiple connecting rods and multiple wing plate are evenly arranged around the axis of tube-like piece.The two ends of connecting rod are articulated in the other end on the width of wing plate and on bearing ring respectively.
When the two ends of locating part contact with extrusion ring and bearing ring respectively, the position of the wing plate turned-out annulus gone between sealing extrusion ring and the inner surface of pit shaft in radial directions.
In an embodiment of the present invention, locating part is the position-limiting drum being set on tube-like piece.
In an embodiment of the present invention, body also includes being arranged between extrusion ring and bearing ring, makes the elastic reset part that extrusion ring and bearing ring are located remotely from each other.
In an embodiment of the present invention, elastic reset part is the spring being sheathed on tube-like piece.
In an embodiment of the present invention, wing plate includes the interior wing plate and the outer wing plate that are arranged alternately, one end on interior wing plate and outer wing plate width is all articulated on extrusion ring, and the two ends on interior wing plate length direction are overlapped on the end upper surface on the length direction of adjacent thereto two outer wing plate.
In an embodiment of the present invention, during the position of wing plate annulus between enclosed body and the inner surface of pit shaft, wing plate is vertical with the axis of tube-like piece.
In an embodiment of the present invention, during the position of wing plate annulus between enclosed body and the inner surface of pit shaft, the lower surface of wing plate is concordant with the following table of extrusion ring.
In an embodiment of the present invention, interior wing plate lower surface has protuberance, and protuberance is identical with the thickness of outer wing plate.
In an embodiment of the present invention, locating part includes multiple positive stop strip arranged around tube-like piece, and positive stop strip is slidably disposed on the chute that tube-like piece outer surface is offered.
Technical scheme at least has the advantage that and beneficial effect:
Owing to the annulus between body and the inner surface of pit shaft is closed by wing plate by the mode overturn, even if so packing element needs to expand bigger size, wing plate also is able to that it is carried out two ends and hides and support, it is adaptable to the occasion that annulus between body and the inner surface of pit shaft is bigger.Simultaneously as packing element is capable of the expanded radially of large-size, therefore by when putting into pit shaft under the packer being provided with this outburst prevention device, it is possible to ensure that packing element exists bigger gap with pit shaft inner surface, make packer be easier to transfer to pit shaft.
After outside distress resolves, the stress within packing element makes packing element possess the trend of axially recovery.Under the effect of packing element internal stress, the two ends of packing element promote the outburst prevention device being positioned at its two ends to be located remotely from each other, and the axial dimension of packing element increases, and radial dimension reduces, and packing element departs from the inner surface of pit shaft.So so that the packer being provided with this outburst prevention device is easily taken out from pit shaft.
Accompanying drawing explanation
For the technical scheme of the clearer explanation embodiment of the present invention, below to embodiment needing the accompanying drawing used be briefly described.Should be appreciated that the following drawings illustrate only some embodiment of the present invention, should not be construed as limiting the scope of the present invention.To those skilled in the art, when not paying creative work, it is possible to obtain other accompanying drawings according to these accompanying drawings.
Fig. 1 is the structural representation of packer；
Fig. 2 is the structural representation of outburst prevention device；
Fig. 3 is the structural representation of wing plate；
Fig. 4 be in packer packing element place set state diagram；
Fig. 5 is the naturalness figure at packing element place in packer；
Fig. 6 is the perspective view of the naturalness at packing element place in packer；
Fig. 7 is the perspective view of the state that sets at packing element place in packer；
Fig. 8 is the A place enlarged drawing of Fig. 7；
Fig. 9 is the structural representation of limit body；
Figure 10 is the structural representation of the first driving device；
Figure 11 is the structural representation of the first stopping means；
Figure 12 is the working state figure A of the second driving device；
Figure 13 is the working state figure B of the second driving device；
Figure 14 is the working state figure A of the second stopping means；
Figure 15 is the working state figure B of the second stopping means；
Figure 16 is the working state figure C of the second driving device；
Figure 17 is the another kind of structural representation of outburst prevention device；
Figure 18 is the working state figure of outburst prevention device in Figure 17；
Figure 19 is the third structural representation of outburst prevention device；
Figure 20 is the working state figure of outburst prevention device in Figure 19.
Wherein, the parts title that accompanying drawing labelling is corresponding is as follows:
null100-outburst prevention device，110-extrusion ring，111-extrudes lid，112-extrudes seat，113-the first opening，114-the second opening，115-lower bearing pin，120-locating part，130-bearing ring，131-pressure cap，132-pressure-bearing is sat，133-the 3rd opening，134-the 4th opening，135-upper pin，140-connecting rod，150-wing plate，151-the first pivot joint ear，152-the second pivot joint ear，153-connects bearing pin，Wing plate in 154-，155-outer wing plate，156-protuberance，157-sliding tray，160-spring，170-push rod，200-tube-like piece，210-chute，220-note pressure hole，300-packing element，400-pit shaft，500-driving device，510-outer sleeve，511-chute，512-draw-in groove，520-retractor device，521-hollow shaft motor，522-output shaft，523-sliding sleeve，524-slide block，530-top connection，540-pressure sliding sleeve，541-claw，550-the second break pin，600-stopping means，610-lower contact，620-support set，630-the first break pin，700-packer.
Detailed description of the invention
For making the purpose of the embodiment of the present invention, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the technical scheme in the embodiment of the present invention is carried out clear, complete description.Obviously, described embodiment is a part of embodiment of the present invention, rather than whole embodiments.
Therefore, below the detailed description of embodiments of the invention is not intended to limit claimed the scope of the present invention, but is merely representative of the section Example of the present invention.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
It should be noted that when not conflicting, the embodiment in the present invention and the feature in embodiment and technical scheme can be mutually combined.
It should also be noted that similar label and letter below figure represent similar terms, therefore, once a certain Xiang Yi accompanying drawing is defined, then it need not be carried out definition further and explain in accompanying drawing subsequently.
In describing the invention, it should be noted that, term " on ", D score, " interior ", orientation or the position relationship of the instruction such as " outward " are based on orientation shown in the drawings or position relationship, or this invention product orientation usually put or position relationship when using, or the orientation usually understood of those skilled in the art or position relationship, this kind of term is for only for ease of the description present invention and simplifies description, rather than the device of instruction or hint indication or element must have specific orientation, with specific azimuth configuration and operation, therefore it is not considered as limiting the invention.Additionally, term " first ", " second " etc. are only used for distinguishing description, and it is not intended that indicate or hint relative importance.
In oil-gas mining process, it is necessary to pit shaft is blocked.During closure, packing element is set on tube-like piece, and packing element is with placing the position that down-hole need to block under tube-like piece.By extruder member, the two ends of packing element being pressed, packing element pressurized expanded radially, thus sealing and being incorporated into pit shaft inner surface, completes to set, thus realizing the purpose sealing and separating.
After packing element expanded radially, packing element external diameter is more than the external diameter of extruder member, and extruder member cannot effectively support packing element, and partial rubber can flow out between extruder member and pit shaft inner surface, causes that packing element is easily broken, the performance of impact packing simultaneously.Currently, mainly utilize bowl-shape anti-lug parcel packing element two ends to improve the problems referred to above.Bowl-shape anti-lug expands along with packing element and produces deformation, and after packing element seals and is incorporated into pit shaft inner surface, anti-lug hides packing element two ends, thus preventing rubber from flowing out.
But, existing anti-burst method, there is packing element expanded radially size little, the problem that packing element not easily takes out from pit shaft.
For this, the embodiment of the present invention provides outburst prevention device so that the problems referred to above improve.
Embodiment 1:
Outburst prevention device is combined in packer by the present embodiment, so that its operation principle and application scenarios to be specifically described.
With reference to Fig. 1, two outburst prevention device 100 entirety are set on tube-like piece 200.Packing element 300 is set on tube-like piece 200, and packing element 300, between two outburst prevention devices 100, arranges driving device 500 in the upper end of tube-like piece 200, arranges stopping means 600 in the lower end of tube-like piece 200, so, constitutes a packer 700.Packer 700 is transferred to pit shaft 400, when setting, for pit shaft 400 being separated and sealing.
With reference to Fig. 2, outburst prevention device 100 includes body and wing plate 150.Body includes extrusion ring 110, locating part 120, bearing ring 130 and connecting rod 140.
Bearing ring 130 includes the pressure cap 131 of ring-type and pressure-bearing sits 132, and pressure cap 131 sits 132 coaxial settings and together with being bolted with pressure-bearing.Bearing ring 130 is set on tube-like piece 200 slidably.The lower surface edge of pressure cap 131 is evenly equipped with multiple 3rd opening 133, and pressure-bearing is sat the outer peripheral face of 132 and is evenly equipped with multiple fourth opening 134 corresponding with the 3rd opening 133.The lower surface of pressure cap 131 is positioned at the position processing of the 3rd opening 133 both sides horizontally disposed bearing pin half bore.Upper surface at pressure-bearing seat 132 is positioned at the position of the 4th opening 134 both sides and also processes horizontally disposed bearing pin half bore.Upper and lower two bearing pins are collectively forming the pin shaft hole holding upper pin 135 in midair.
The upper end of connecting rod 140 is articulated on bearing ring 130 by upper pin 135.
With reference to Fig. 2 and Fig. 3, the two ends that wing plate 150 is positioned on width be provided with the first pivot joint ear 151 outside and the second pivot joint ear 152.First pivot joint ear 151 constitutes the first end of wing plate 150, and the second pivot joint ear 152 constitutes the second end of wing plate 150.First pivot joint ear 151 is by connecting the lower end pivot joint of bearing pin 153 and connecting rod 140.
With reference to Fig. 2, extrusion ring 110 includes extruding lid 111 and the extruding seat 112 of ring-type, extrudes lid 111 setting coaxial with extruding seat 112 and together with being bolted.Extrusion ring 110 is set on tube-like piece 200 slidably.The outer peripheral face of extruding lid 111 is evenly equipped with multiple first opening 113, and the outer peripheral face of extruding seat 112 is evenly arranged second opening 114 corresponding with the first opening 113.Upper surface at extruding lid 111 is positioned at the position processing of the first opening 113 both sides horizontally disposed bearing pin half bore.Lower surface at extruding seat 112 is positioned at the position of the second opening 114 both sides and also processes horizontally disposed bearing pin half bore, and upper and lower two bearing pins are collectively forming the pin shaft hole holding lower bearing pin 115 in midair.
Second pivot joint ear 152 of wing plate 150 is articulated on extrusion ring 110 by lower bearing pin 115.
With reference to Fig. 2, locating part 120 is the position-limiting drum being set on tube-like piece 200.Locating part 120 is between extrusion ring 110 and bearing ring 130.
With reference to Fig. 4, the two ends being arranged on packing element 300 of two outburst prevention device 100 symmetries.Extrusion ring 110 is near the end of packing element 300.
With reference to Fig. 5, when the bearing ring 130 of the outburst prevention device 100 above driving device 500 is not pointed to presses, between bearing ring 130 and extrusion ring 110, possesses bigger distance.Wing plate 150 fold inward is in generally vertical state.In the raw, between the inner peripheral surface of its outer peripheral face and pit shaft 400, there is gap in packing element 300.
With reference to Fig. 4, when setting, the bearing ring 130 of the outburst prevention device 100 that driving device 500 is pointed to top presses.Stopping means 600 contacts to limit it and moves up in the side of the power of driving device 500 applying with the bearing ring 130 of the outburst prevention device 100 being positioned below.
Under the pressure of driving device 500, bearing ring 130 and extrusion ring 110 are close to each other, and connecting rod 140 promotes wing plate 150 outwards to overturn in radial directions.Extrusion ring 110 and bearing ring 130 all with two end in contact of locating part 120 after, the position of the annulus between the turned-out inner surface going to sealing extrusion ring 110 and pit shaft 400 of wing plate 150.The pressure of driving device 500 is transferred to packing element 300 by bearing ring 130, locating part 120 and extrusion ring 110.Packing element 300 two ends are squeezed, and the axial length of packing element 300 shortens, expanded radially, until the inner surface being fitted in pit shaft 400 that the periphery of packing element 300 seals, complete to set, thus realizing the purpose sealing and separating.The part exceeding extrusion ring 110 on packing element 300 radial extension is stopped by wing plate 150, thus avoiding under high pressure, rubber flows out between extrusion ring 110 and pit shaft 400 inner surface.Owing to wing plate 150 is closed by the annulus between the mode inner surface to extrusion ring 110 and pit shaft 400 that overturns, even if so packing element 300 needs to expand bigger size, wing plate 150 also is able to that it is carried out two ends and hides and support, it is adaptable to the occasion that annulus between the inner surface of extrusion ring 110 and pit shaft 400 is bigger.Simultaneously, owing to packing element 300 is capable of the expanded radially of large-size, therefore when the packer being provided with outburst prevention device 100 is put into pit shaft 400 700 times, it is possible to ensure that packing element 300 exists bigger gap with pit shaft 400 inner surface, make packer 700 be easier to transfer to pit shaft 400.
In the existing method utilizing bowl-shape anti-lug to carry out protrusion-dispelling, after bowl-shape anti-lug deforms with packing element, bowl-shape anti-lug cannot be restored, and causes that packing element cannot restore.The lasting sealing of packing element is incorporated into pit shaft inner surface, causes that packing element is difficult to from pit shaft and takes out.
Being provided with the packer 700 of outburst prevention device 100, after outside distress resolves, the stress within packing element 300 makes packing element 300 possess the trend of axially recovery.Under the effect of packing element 300 internal stress, the two ends of packing element 300 promote the outburst prevention device 100 being positioned at its two ends to be located remotely from each other, and the axial dimension of packing element 300 increases, and radial dimension reduces, and packing element 300 departs from the inner surface of pit shaft 400.So so that packer 700 is easily taken out from pit shaft 400.
Although the radial dimension of packing element 300 can be reduced, reduce the difficulty taken out from pit shaft 400 by packing element 300.But in Fig. 4, the position that the annulus that wing plate 150 is still between the inner surface to extrusion ring 110 and pit shaft 400 is closed, the taking-up of packer 700 is likely constituted obstruction by wing plate 150.For this, with reference to Fig. 5, between extrusion ring 110 and bearing ring 130, be provided as the spring 160 of elastic reset part.Spring 160 is set on tube-like piece 200.With reference to Fig. 4, when setting, the squeezed pressure ring 110 of spring 160 and bearing ring 130 compress.With reference to Fig. 5, when the bearing ring 130 of the outburst prevention device 100 above driving device 500 is not pointed to presses, spring 160 is upheld, and makes extrusion ring 110 and bearing ring 130 be located remotely from each other, drives wing plate 150 inwardly to overturn thereby through connecting rod 140, and wing plate 150 is regained.So, it is to avoid the taking-up of packer 700 is constituted obstruction.
Certain elastic reset part can also adopt other elastomeric materials to constitute, for instance possesses elastic rubber tube etc..Elastic reset part can also be possess multiple small spring being uniformly located at around tube-like piece 200 outer peripheral face, and one end of small spring is connected with extrusion ring 110, and the other end of small spring is connected with bearing ring 130.
Upon inflation, two ends if able to form the end face of level, are then conducive to keeping the intensity of packing element 300, it is to avoid packing element 300 breaks to packing element 300.For this, with reference to Fig. 2, by being located at the axial length of locating part 120, when making the two ends of locating part 120 contact with extrusion ring 110 and bearing ring 130 respectively, wing plate 150 is vertical with the axis of tube-like piece 200.Namely wing plate 150 is arranged in the horizontal level of Fig. 2.By arranging wing plate 150 and extrusion ring 110 relative position in the axial direction, at this moment, the lower surface of wing plate 150 is concordant with the following table of extrusion ring 110.So, further ensure that the two ends of packing element 300 can form the end face of level.
Between wing plate 150, it is difficult to that avoids there will be gap, this may result in extremely least a portion of rubber and flows out.For this, with reference to Fig. 6 and Fig. 7, wing plate 150 is arranged to include the form of interior the wing plate 154 and outer wing plate 155 being arranged alternately.Interior wing plate 154 and outer wing plate 155 are provided with the structure of the wing plate 150 shown in Fig. 3.Interior wing plate 154 and outer wing plate 155 are also equipped with the 3rd end on length direction and the 4th end, the end upper surface on the length direction of adjacent thereto two outer wing plate 155 it is overlapped on respectively for outburst prevention device 100 above, the 3rd end of interior wing plate 154 and the lower surface of the 4th end.So, as it is shown in fig. 7, when setting, there will be no gap between interior wing plate 154 and outer wing plate 155, so stop the situation that extremely least a portion of rubber flows out.Certainly, the larger gap between two outer wing plates 155 of neck is by uneven for the end face making the packing element after setting 300 mutually, and packing element 300 exists the risk broken.For this, with reference to Fig. 8, protuberance 156 is set at interior wing plate 154 lower surface, protuberance 156 is identical with the thickness of outer wing plate 155.So, the larger gap between two outer wing plates 155 is eliminated, thus reducing the risk that packing element 300 breaks.
Locating part 120 is mainly used in the distance between restriction extrusion ring 110 and bearing ring 130 and the pressure of transmission driving device 500.With reference to Fig. 9, locating part 120 can also is that multiple positive stop strip arranged around tube-like piece 200, and positive stop strip is slidably disposed on the chute 210 that tube-like piece 200 outer surface is offered.So, the equally possible distance realized between restriction extrusion ring 110 and bearing ring 130, and the function of the pressure of transmission driving device 500.
With reference to Figure 10, driving device 500 includes outer sleeve 510 and retractor device 520.The inner surface of top connection 530 is threaded connection the upper end being fixed on tube-like piece 200.Outer sleeve 510 is set on tube-like piece 200, and outer sleeve 510 is connected to realize fixing with the outer surface thread of top connection 530.Retractor device 520 is arranged in the annulus of outer sleeve 510 inner surface and the restriction of tube-like piece 200 outer surface, and the telescopic end of retractor device 520 acts on bearing ring 130 upper surface of outburst prevention device 100 above.The telescopic end of retractor device 520 extends downwardly from bearing ring 130 is pressed.Retractor device 520 can be hydraulic cylinder or pneumatic cylinder.Retractor device 520 can also adopt following structure.
Retractor device 520 includes hollow shaft motor 521, output shaft 522 and sliding sleeve 523.
Hollow shaft motor 521 is around described tube-like piece 200.Output shaft 522 is hollow tubular, and output shaft 522 is set on tube-like piece 200 and is connected with hollow shaft motor 521.Sliding sleeve 523 is set on output shaft 522 and threadeds with output shaft 522.The inner surface of outer sleeve 510 offers axially extended chute 511, and the outer surface of sliding sleeve 523 arranges the slide block 524 coordinated with chute 511.Sliding sleeve 523 constitutes the upper surface of telescopic end, the lower surface of sliding sleeve 523 and bearing ring 130.When setting, hollow shaft motor 521 rotates forward and drives output shaft 522 to rotate, and the threaded engagement of output shaft 522 and sliding sleeve 523 makes sliding sleeve 523 move downward along chute 511, so, bearing ring 130 is pressed.When pit shaft 400 inner surface being separated and be sealed, hollow shaft motor 521 reversion drives output shaft 522 to rotate, and the threaded engagement of output shaft 522 and sliding sleeve 523 makes sliding sleeve 523 move upward along chute 511, so, stops bearing ring 130 is pressed.
With reference to Figure 11, stopping means 600 is the spacing preiection being arranged on tube-like piece 200 outer surface.The upper surface of spacing preiection contacts with the bearing ring 130 on the outburst prevention device 100 being positioned below, and moves up limiting its side of power applied at driving device 500.
Driving device 500 and stopping means 600 can also be arranged as follows.
With reference to Figure 12, driving device 500 includes outer sleeve 510 and pressure sliding sleeve 540.The inner surface of top connection 530 is threaded connection the upper end being fixed on tube-like piece 200.Outer sleeve 510 is set on tube-like piece 200, and outer sleeve 510 is connected to realize fixing with the outer surface thread of top connection 530.The annulus of lower end closed is formed between inner surface and the outer surface of tube-like piece 200 of outer sleeve 510.Pressure sliding sleeve 540 is set on tube-like piece 200 slidably, and by the sealing ring of set within it side face and outer peripheral face, the open end in sealing ring space.Tube-like piece 200 offers the note pressure hole 220 connecting its inner space with annulus.When setting, in tube-like piece 200, inject highly pressurised liquid.Highly pressurised liquid enters in annulus by noting pressure hole 220, makes pressure sliding sleeve 540 move down, and the lower end of pressure sliding sleeve 540 contacts with the bearing ring 130 of outburst prevention device 100 above, and it is applied pressure.When setting, stop injecting highly pressurised liquid in tube-like piece 200, can stop bearing ring 130 is pressed.
For the driving device 500 shown in Figure 12, stopping means 600 can for the spacing preiection being arranged on tube-like piece 200 outer surface shown in Figure 11.The upper surface of spacing preiection contacts with the bearing ring 130 on the outburst prevention device 100 being positioned below, and moves up limiting its side of power applied at driving device 500.
Above-mentioned driving device 500, it is necessary to continue to inject highly pressurised liquid in tube-like piece 200, could keep setting state, so unsatisfactory in economy.For this, the inner surface at outer sleeve 510 arranges draw-in groove 512, and the upper end of pressure sliding sleeve 540 is provided with the claw 541 on multiple inner surface being pressed on outer sleeve 510 by its own resilient.When packer 700 sets, as shown in figure 13, claw 541 embeds in draw-in groove 512, and the position of pressure sliding sleeve 540 is maintained.So, it is not necessary to continue in tube-like piece 200, inject highly pressurised liquid and can keep setting state.With reference to Figure 14, stopping means 600 includes what inner surface was connected lower contact 610 with tube-like piece 200 lower end outer surface thread, and between lower contact 610 inner surface and tube-like piece 200 outer surface and be set in the support set 620 on tube-like piece 200 slidably.Support set 620 is connected by the first break pin 630 with lower contact 610.The base contact of the upper end of support set 620 and the bearing ring 130 of the outburst prevention device 100 being positioned below.When setting, by tube-like piece 200 to lifting up.With reference to Figure 15, the first break pin 630 ruptures, and lower contact 610 moves upward relative to support set 620 with tube-like piece 200.With reference to Figure 16, pressure sliding sleeve 540 is located away the bearing ring 130 on the outburst prevention device 100 of top, so stops pressing to bearing ring 130.
In order to avoid going into the well in process at packer 700, pressure sliding sleeve 540 moves downward and makes claw 541 embed setting of leading to errors in draw-in groove 512.With reference to Figure 12, pressure sliding sleeve 540 and outer sleeve 510 are connected by the second break pin 550, pressure sliding sleeve 540 is fixed.So avoiding going into the well in process at packer 700, pressure sliding sleeve 540 moves downward and makes claw 541 embed setting of leading to errors in draw-in groove 512.With reference to Figure 13, when setting, highly pressurised liquid enters in annulus by noting pressure hole 220, and pressure sliding sleeve 540 is applied pressure, and the second break pin 550 ruptures, and pressure sliding sleeve 540 moves down.
With reference to Figure 17, the body of outburst prevention device 100 can also only include extrusion ring 110 and bearing ring 130.Wing plate 150 only arranges the second pivot joint ear 152.Second pivot joint ear 152 of wing plate 150 is articulated on extrusion ring 110 by lower bearing pin 115.Sheathed torsion spring on lower bearing pin 115, torsion spring is not shown in the drawings.Under the effect of torsion spring, the upper surface of wing plate 150 is resisted against on the outer peripheral face of bearing ring 130.With reference to Figure 18, under the effect of driving device 500, bearing ring 130 is near extrusion ring 110, and bearing ring 130 drives wing plate 150 outwards to overturn in radial directions.After bearing ring 130 contacts with extrusion ring 110, the wing plate 150 i.e. position of annulus between the inner surface of sealing extrusion ring 110 and pit shaft 400.
With reference to Figure 19, the body of outburst prevention device 100 can also only include extrusion ring 110, bearing ring 130 and push rod 170.Wing plate 150 only arranges the second pivot joint ear 152.Second pivot joint ear 152 of wing plate 150 is articulated on extrusion ring 110 by lower bearing pin 115.Multiple push rods 170 are by circumferentially fixed on the lower surface of bearing ring 130.The setting that push rod 170 tilts.Wing plate 150 offers the sliding tray 157 of axis and the axes intersect of tube-like piece 200.The lower end of push rod 170 and sliding tray 157 are slidably connected.With reference to Figure 20, under the effect of driving device 500, bearing ring 130 is near extrusion ring 110, and push rod 170 slides in sliding tray 157 and drives wing plate 150 outwards to overturn in radial directions, until wing plate 150 overturns the position of the annulus between the inner surface of sealing extrusion ring 110 and pit shaft 400.
The foregoing is only the section Example of the present invention, be not limited to the present invention, to those skilled in the art, the present invention can have various modifications and variations.All within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within protection scope of the present invention.
Claims (10)
1. outburst prevention device, it is characterised in that:
In the annulus that the inner surface of outer surface and pit shaft for being assemblied in tube-like piece limits；
Described outburst prevention device includes body and the wing plate of ring-type；What described body slided is sheathed on described tube-like piece；Multiple described wing plates are arranged on one end of described body, and multiple described wing plates can the turned-out position going to the annulus closed between described body and the inner surface of described pit shaft in radial directions.
2. outburst prevention device according to claim 1, it is characterised in that:
Described body includes extrusion ring and bearing ring；
Described extrusion ring and described bearing ring are sheathed on described tube-like piece slidably, and the one end on described wing plate width is articulated on described extrusion ring；The upset of described wing plate is driven by the relative motion between described extrusion ring and described bearing ring.
3. outburst prevention device according to claim 2, it is characterised in that:
The upper surface of described wing plate is resisted against on the outer peripheral face of described bearing ring, and when described extrusion ring and described bearing ring are close to each other, described bearing ring drives described wing plate outwards to overturn in radial directions.
4. outburst prevention device according to claim 3, it is characterised in that:
Described wing plate and the pivot points place of described extrusion ring, be provided with the torsion spring making the upper surface of described wing plate be resisted against on the outer peripheral face of described bearing ring.
5. outburst prevention device according to claim 2, it is characterised in that:
Described body also includes multiple push rod being fixed on described bearing ring, and described push rod is slidably connected with described wing plate by being opened in the sliding tray of described wing plate upper surface；
The axes intersect of the axis of described sliding tray and described tube-like piece.
6. outburst prevention device according to claim 2, it is characterised in that:
Described body also includes locating part and connecting rod；
Described locating part is axially slidably arranged on described tube-like piece, and described locating part is between described extrusion ring and described bearing ring；Multiple described connecting rods and multiple described wing plate are evenly arranged around the axis of described tube-like piece；The two ends of described connecting rod are articulated in the other end on the width of described wing plate and on described bearing ring respectively；
When the two ends of described locating part contact with described extrusion ring and described bearing ring respectively, described wing plate is the turned-out position going to the annulus closed between described extrusion ring and the inner surface of described pit shaft in radial directions.
7. outburst prevention device according to claim 6, it is characterised in that:
Described locating part is the position-limiting drum being set on described tube-like piece.
8. the outburst prevention device according to any one in claim 2～7, it is characterised in that:
Described body also includes being arranged between described extrusion ring and described bearing ring, makes the elastic reset part that described extrusion ring and described bearing ring are located remotely from each other.
9. outburst prevention device according to claim 8, it is characterised in that:
Described elastic reset part is the spring being sheathed on described tube-like piece.
10. the outburst prevention device according to any one in claim 2～7, it is characterised in that:
Described wing plate includes the interior wing plate and the outer wing plate that are arranged alternately, one end on described interior wing plate and described outer wing plate width is all articulated on described extrusion ring, and the two ends on described interior wing plate length direction are overlapped on the end upper surface on the length direction of the described outer wing plate of adjacent thereto two.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250877.5A CN105781479B (en) | 2016-04-20 | 2016-04-20 | Outburst prevention device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250877.5A CN105781479B (en) | 2016-04-20 | 2016-04-20 | Outburst prevention device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105781479A true CN105781479A (en) | 2016-07-20 |
| CN105781479B CN105781479B (en) | 2018-11-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610250877.5A Active CN105781479B (en) | 2016-04-20 | 2016-04-20 | Outburst prevention device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105781479B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178336A (en) * | 2017-06-05 | 2017-09-19 | 西南石油大学 | A kind of outburst prevention device of packing element |
| CN107939332A (en) * | 2017-11-27 | 2018-04-20 | 中国石油集团渤海钻探工程有限公司 | A kind of degradable floating type protrusion-resisting protective device of packer |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4224987A (en) * | 1978-02-13 | 1980-09-30 | Brown Oil Tools, Inc. | Well tool |
| GB2435486A (en) * | 2005-07-26 | 2007-08-29 | Polymer Holdings Ltd | A downhole packer |
| CN201620819U (en) * | 2009-12-22 | 2010-11-03 | 长葛市福侨机电有限公司 | Projection prevention and protection device of packer rubber cylinder |
| CN202483507U (en) * | 2012-03-08 | 2012-10-10 | 天津汇铸石油设备科技有限公司 | High-pressure sealing rubber barrel assembly |
| CN204283315U (en) * | 2014-11-21 | 2015-04-22 | 中国石油天然气股份有限公司 | Packer |
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2016
- 2016-04-20 CN CN201610250877.5A patent/CN105781479B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4224987A (en) * | 1978-02-13 | 1980-09-30 | Brown Oil Tools, Inc. | Well tool |
| GB2435486A (en) * | 2005-07-26 | 2007-08-29 | Polymer Holdings Ltd | A downhole packer |
| CN201620819U (en) * | 2009-12-22 | 2010-11-03 | 长葛市福侨机电有限公司 | Projection prevention and protection device of packer rubber cylinder |
| CN202483507U (en) * | 2012-03-08 | 2012-10-10 | 天津汇铸石油设备科技有限公司 | High-pressure sealing rubber barrel assembly |
| CN204283315U (en) * | 2014-11-21 | 2015-04-22 | 中国石油天然气股份有限公司 | Packer |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107178336A (en) * | 2017-06-05 | 2017-09-19 | 西南石油大学 | A kind of outburst prevention device of packing element |
| CN107939332A (en) * | 2017-11-27 | 2018-04-20 | 中国石油集团渤海钻探工程有限公司 | A kind of degradable floating type protrusion-resisting protective device of packer |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105781479B (en) | 2018-11-16 |
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