CN203847056U - Large-drift-diameter packer - Google Patents
Large-drift-diameter packer Download PDFInfo
- Publication number
- CN203847056U CN203847056U CN201420164063.6U CN201420164063U CN203847056U CN 203847056 U CN203847056 U CN 203847056U CN 201420164063 U CN201420164063 U CN 201420164063U CN 203847056 U CN203847056 U CN 203847056U
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- China
- Prior art keywords
- deblocking
- packer
- latus rectum
- pawl spring
- core pipe
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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- 230000007246 mechanism Effects 0.000 claims abstract description 50
- 210000000664 rectum Anatomy 0.000 claims abstract description 47
- 238000012856 packing Methods 0.000 claims description 27
- 239000012530 fluid Substances 0.000 claims description 26
- 238000007789 sealing Methods 0.000 claims description 22
- 230000005540 biological transmission Effects 0.000 claims description 18
- 241000239290 Araneae Species 0.000 claims description 10
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 6
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910002804 graphite Inorganic materials 0.000 claims description 5
- 239000010439 graphite Substances 0.000 claims description 5
- 238000002955 isolation Methods 0.000 claims description 3
- -1 polytetrafluoroethylene Polymers 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 4
- 210000000078 claw Anatomy 0.000 abstract 5
- 238000004873 anchoring Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 description 9
- 230000008569 process Effects 0.000 description 9
- 239000003129 oil well Substances 0.000 description 8
- 230000000694 effects Effects 0.000 description 5
- 230000005484 gravity Effects 0.000 description 4
- 239000011229 interlayer Substances 0.000 description 3
- 238000011084 recovery Methods 0.000 description 3
- 238000010008 shearing Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 230000015572 biosynthetic process 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
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
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- Piles And Underground Anchors (AREA)
Abstract
The utility model discloses a big latus rectum packer. Big latus rectum packer includes the center tube, the cover is established at the core pipe outside the center tube, set firmly the top connection in the center tube upper end, the lower clutch of establishing at the core pipe lower extreme is established to the cover, still be provided with actuating mechanism between top connection and lower clutch, the setting mechanism, anchoring mechanism, big latus rectum packer still includes deblocking mechanism, deblocking mechanism includes the deblocking claw spring, the deblocking sliding sleeve, the upper portion and the core pipe looks fixed connection of deblocking claw spring, the lower part of deblocking claw spring passes through the deblocking pin with the deblocking sliding sleeve and can be connected with dismantling, and the lower part of deblocking claw spring can also offset tightly with the lower clutch, be formed with on the inner wall of deblocking claw spring and be used for the upper end inconsistent protruding with the deblocking sliding sleeve. The utility model discloses a mechanical type deblocking structure for the deblocking of packer is easy. Meanwhile, due to the adoption of high-temperature resistant materials, the large-drift-diameter packer can work normally in a high-temperature environment.
Description
Technical field
The utility model has related to a kind of quarrying apparatus of oil field, has related in particular to a kind of large latus rectum packer.
Background technology
Packer plays the effect of layering in multiple zone recovery process.Packer is applicable to the technological measures such as oil well delamination formation testing, oil recovery, test, water detection, water blockoff, sand control.The quality of packer directly affects the exploitation of oil well.
The work of packer generally comprises and sets, grappling, give up and the step such as deblocking.Set that to be deformation by packing element form sleeve pipe and oil pipe to cut off.Grappling is for packer is fixed on to precalculated position.Giving up is in order to expand the internal diameter of packer, and some unnecessary parts are removed.Deblocking is in order to recover the deformation of packing element, and then packer is removed from oil well.
For some, have such as the oil well of mixing the special process requirements such as liquid, well-flushing, when job engineering, for by workpiece such as instrument or oil pumps, just need to adopt large latus rectum packer.Large latus rectum packer refers to the larger packer of core bore of packing element.Generally speaking, large latus rectum packer refer to and give up after the internal diameter packer that is greater than 90 centimetres.
In the prior art, the oil pipe that traditional large latus rectum packer is connected to large latus rectum packer top when deblocking by carrying on deblocking bar is realized deblocking.And in reality, traditional large latus rectum removing seal for packer success rate is not high, sometimes even exist deblocking bar to break, phenomenon that also could not deblocking.
Utility model content
In order to overcome the above-mentioned defect of prior art, technical problem to be solved in the utility model has been to provide a kind of large latus rectum packer, and its deblocking is easy and operate simple and easy.
Concrete technical scheme of the present utility model is:
A kind of large latus rectum packer, described large latus rectum packer comprises central tube, be set in the core pipe outside described central tube, be installed in the top connection of described central tube upper end, be set in the lower contact of described core pipe lower end, between described top connection and described lower contact, be also provided with executing agency, setting mechanism, anchor mechanism, it is characterized in that: described large latus rectum packer also comprises solution sealing mechanism, described solution sealing mechanism comprises deblocking pawl spring, deblocking sliding sleeve, the top of described deblocking pawl spring and described core pipe are fixedly connected, the bottom of described deblocking pawl spring is connected by described deblocking pin removedly with described deblocking sliding sleeve, and the bottom of described deblocking pawl spring can offset with described lower contact, on the inwall of described deblocking pawl spring, be formed with for the inconsistent projection in the upper end with described deblocking sliding sleeve.
Preferably, the bottom of described deblocking pawl spring has the elastic portion of radially shrinking.
Preferably, on the inwall of described lower contact, be formed with for the inconsistent step in the lower surface with described deblocking sliding sleeve.
Preferably, between the top of described deblocking pawl spring and described lower contact, be also provided with sealing mechanism, described sealing mechanism comprises the joint ring of being made by graphite, the gasket ring that is positioned at described joint ring bottom, and described setting mechanism comprises the packing element of being made by polytetrafluoroethylene (PTFE).
Preferably, described large latus rectum packer also comprises the retaining ring being set in outside described core pipe, and the top of described retaining ring and described executing agency are inconsistent, and the bottom of described retaining ring and described setting mechanism are inconsistent.
Preferably, described executing agency comprises that the ball seat, the fixed cover that are arranged on described central tube lower end are located at the fluid cylinder on described central tube, be positioned at the annular space that described fluid cylinder forms with described central tube and annular space is divided into the epicoele of relative isolation and the piston of cavity of resorption, the top of described central tube offers the pod apertures being connected with the epicoele of described annular space, one end of the bottom of described piston and a force transmission element is inconsistent, and the other end of described force transmission element is connected removedly with described setting mechanism.
Preferably, described large latus rectum packer also comprises releasing gadget, described releasing gadget comprises adapter sleeve, the pawl spring of giving up, the top of described adapter sleeve and described central tube are fixedly connected, the bottom of described adapter sleeve is set on described ball seat and by the pin of giving up and is fixedly connected, the top of the described pawl spring of giving up is between described adapter sleeve and described core pipe, the bottom of the described pawl spring of giving up is set on described ball seat and with described core pipe and offsets, described in the give up external diameter of pawl spring be less than the internal diameter of described deblocking sliding sleeve.
Preferably, described setting mechanism comprises pressure cap, the packing element being set in successively from top to bottom outside described core pipe, described pressure cap is connected removedly with described executing agency, described anchor mechanism comprises cone, slips and the slip spider being connected mutually with described lower contact, described cone and described packing element are inconsistent, and the bottom of described cone and described core pipe are fixedly connected by setting pin.
The utility model adopts above structure, has the following advantages:
1, the utility model has adopted mechanical type solution seal structure, makes the deblocking of packer comparatively easy.
2, adopted exotic material and hermetically-sealed construction, guaranteed that this large latus rectum packer can normally work under hot environment.
Accompanying drawing explanation
Accompanying drawing described here is only for task of explanation, and is not intended to limit by any way the utility model scope of disclosure.In addition, the shape of each parts in figure and proportional sizes etc. are only schematically, for helping understanding of the present utility model, are not shape and the proportional sizes that specifically limits each parts of the utility model.Those skilled in the art, under instruction of the present utility model, can select various possible shapes and proportional sizes to implement the utility model as the case may be.
Fig. 1 has shown the structural representation of large latus rectum packer in the utility model.
Fig. 2 has shown the local enlarged diagram of retaining ring and core pipe in Fig. 1.
Fig. 3 has shown the structural representation after large latus rectum packer in Fig. 1 is given up.
Fig. 4 has shown the structural representation after large latus rectum removing seal for packer in Fig. 1.
Fig. 5 has shown the structural representation after deblocking pawl spring and deblocking sliding sleeve in Fig. 1 are separated.
The Reference numeral of above accompanying drawing: 1, central tube; 101, inner chamber; 102, pod apertures; 2, ball seat; 3, fluid cylinder; 4, piston; 5, force transmission element; 61, epicoele; 62, cavity of resorption; 7, set pin; 8, core pipe; 9, retaining ring; 10, pressure cap; 11, packing element; 12, bolt; 131, the first toothed region; 132, the first tooth; 133, the second toothed region; 134, the second tooth; 14, cone; 141, the bottom of cone; 15, slips; 151, the top of slips; 152, the bottom of slips; 153, sawtooth; 16, slip spider; 161, the top of slip spider; 17, lower contact; 171, step; 18, deblocking sliding sleeve; 181, the upper end of deblocking sliding sleeve; 19, deblocking pawl spring; 191, the top of deblocking pawl spring; 192, the bottom of deblocking pawl spring; 193, projection; 194, groove; 20, deblocking pin; 21, screw thread; 22, the pin of giving up; 23, adapter sleeve; 24, lining; 25, holder cap; 26, the pawl spring of giving up; 27, joint ring; 271, gasket ring; 28, top connection; 29, upper prepared cap.
The specific embodiment
With the description of the utility model specific embodiment, can more be well understood to details of the present utility model by reference to the accompanying drawings.But the specific embodiment of the present utility model described here,, for explaining the purpose of this utility model, is only to restriction of the present utility model and can not be understood as by any way.Under instruction of the present utility model, technician can conceive based on possible distortion arbitrarily of the present utility model, and these all should be regarded as belonging to scope of the present utility model.
The utility model discloses large latus rectum packer.Shown in Fig. 5, Fig. 1 has shown the structural representation of large latus rectum packer in the utility model; Fig. 2 has shown the local enlarged diagram of retaining ring and core pipe in Fig. 1; Fig. 3 has shown the structural representation after large latus rectum packer in Fig. 1 is given up; Fig. 4 has shown the structural representation after large latus rectum removing seal for packer in Fig. 1; Fig. 5 has shown the structural representation after deblocking pawl spring and deblocking sliding sleeve in Fig. 1 are separated.Large latus rectum packer comprises central tube 1, be set in core pipe 8 outside central tube 1, be set in central tube 1 upper end and by screw thread be fixedly installed on central tube 1 upper end top connection 28, be set in the lower contact 17 of core pipe 8 lower ends.Between top connection 28 and lower contact 17, be also provided with executing agency, setting mechanism and anchor mechanism.Executing agency can provide and make its setting force setting to setting mechanism after being subject to pressurized fluid effect, for the anchorage force of anchorage force is provided to anchor mechanism.Setting mechanism is for making packer sealing at sleeve pipe by its deformation.Anchor mechanism is for being anchored on sleeve pipe by packer.In the present embodiment, the internal diameter of core pipe 8 can reach more than 90 centimetres.
Large latus rectum packer also comprises solution sealing mechanism, separate sealing mechanism and comprise deblocking pawl spring 19, deblocking sliding sleeve 18, top 191 and the described core pipe 8 of described deblocking pawl spring are fixedly connected, and the bottom 192 of described deblocking pawl spring is connected by described deblocking pin 20 removedly with described deblocking sliding sleeve 18 and the bottom of described deblocking pawl spring 19 can also offset with described lower contact 17.On the inwall of described deblocking pawl spring 19, be formed with for the inconsistent projection in upper end 181 with described deblocking sliding sleeve 18.The bottom 192 of deblocking pawl spring has the elastic portion of radially shrinking.
When packer needs deblocking, deblocking sliding sleeve 18 is imposed to upper lifting force, deblocking sliding sleeve 18 passes to deblocking pin 20 by the upper lifting force being subject to.When the shearing force being subject to when deblocking pin 20 surpasses its limit, deblocking pin 20 is cut off.As shown in Figure 3, after 20 fractures of deblocking pin, carry deblocking sliding sleeve 18 in continuation, deblocking sliding sleeve 18 is separated with the bottom 191 of deblocking pawl spring 19.Now, nature is shunk and recovered in the bottom 192 of deblocking pawl spring 191.The outer wall of the bottom 192 of deblocking pawl spring 19 no longer props up the inwall of lower contact 17.So lower contact 17 is separated with core pipe 8.In continuation, carry deblocking sliding sleeve 18, when the upper end 181 of deblocking sliding sleeve 18 and the projection 193 of deblocking pawl spring 19 are when inconsistent, deblocking sliding sleeve 18 drives core pipes 8 to move upward by deblocking pawl spring 19 to make packer form deblocking.
One preferred embodiment in, as shown in Figure 5, on deblocking pawl spring 19, can also offer an annular groove 194 that can hold deblocking sliding sleeve 18.After 20 fractures of deblocking pin, deblocking sliding sleeve 18 is during upwards along the endwisely slipping of deblocking pawl spring 19, deblocking sliding sleeve 18 can embed in the groove 194 of deblocking pawl spring 19, make to form gap between deblocking sliding sleeve 18 and deblocking pawl spring 19, shrink the bottom 192 that is beneficial to deblocking pawl spring 19, is beneficial to deblocking pawl spring 19 and is separated with lower contact 17.
In the utility model, unsealing tool is conciliate sealing mechanism only need to overcome the self gravitation of core pipe 8 and unsealing tool.Compared to traditional packer construction, the required deblocking power of large latus rectum packer in the utility model is dwindled greatly.Meanwhile, for traditional large latus rectum packer, in deblocking power, there is the power of part for packing element 11 is produced to deformation.And large latus rectum packer in the utility model is in deblocking process, can realize automatically reseting of packing element 11.Obvious, such structure is comparatively simple and easy, and success rate is higher.
One preferred embodiment in, shown in Fig. 1 and 2, on the inwall of lower contact 17, be formed with a step 171, this step 171 is inconsistent with the lower surface of deblocking sliding sleeve 18.When deblocking pin 20 is not cut off, step 171 props up deblocking sliding sleeve 18 to offset deblocking sliding sleeve 18 or deblocking pawl spring 19 because of the shearing force that self gravitation produces, and prevents that deblocking pin 20 from being cut off by mistake.
One preferred embodiment in, shown in Fig. 3, between the top 191 of described deblocking pawl spring 19 and described lower contact 17, be also provided with sealing mechanism, described sealing mechanism comprises the joint ring 27 of being made by graphite, the gasket ring 271 that is positioned at described joint ring 27 bottoms, and described setting mechanism comprises the packing element 11 of being made by polytetrafluoroethylene (PTFE).In recovery process, may need to note high-temperature steam in oil well.And the temperature on stratum also can raise along with the increase of well depth.Thereby packer is often operated under hot conditions.If packing element 11 still adopts traditional General Purpose Rubber material, so, at the easy softening transform of hot conditions lower rubber cylinder, and then make packer cannot reach the state of setting.Must reach the object on packing stratum like this, more can not stop oil gas logical altering of ground interlayer.For the packer of present embodiment, because packing element 11 has adopted polytetrafluoroethylmaterial material, can in the oil well of 350 ℃ of high temperature, realize and setting smoothly, the interlayer interference that has also stoped oil gas to cause at ground interlayer play simultaneously.Adopt the joint ring 27 of graphite not only to there is sealing, also there is heat-resisting quantity.Under hot conditions, the joint ring 27 of being made by graphite still can be guaranteed the sealing of packer.
Further, described large latus rectum packer also comprises the retaining ring 9 being set in outside described core pipe, and the top of described retaining ring 9 and described executing agency are inconsistent, and the bottom of described retaining ring 9 and described setting mechanism are inconsistent.Between retaining ring 9 and core pipe 8, form zigzag structure, this zigzag structure does not limit the relative retaining ring of core pipe and moves upward.Shown in Fig. 4, zigzag structure comprises and is arranged on the first toothed region 131 on core pipe 8 outer walls and is arranged on the second toothed region 133 on retaining ring 9 inwalls.It is bullet from small to large from top to bottom that the first toothed region 131 has a plurality of the first tooth 132, the first teeth 132 of longitudinally arranging.It is bullet from large to small from top to bottom that the second toothed region 133 has a plurality of the second tooth 134, the second teeth 134 of longitudinally arranging.The first tooth 132 can with the corresponding coupling of the second tooth 134.When retaining ring 9 is meshed with core pipe 8, the bottom of the first tooth 132 props up mutually with the top of the second tooth 134.The bottom of the first tooth 132 stops the top of the second tooth 134 to move upward.But while the first toothed region 131 does not limit the second toothed region 133 and moves downward, and the second tooth 134 can move downward along the taper surface of the first tooth 131.That is to say, retaining ring 9 relatively core pipe 8 moves downward, but retaining ring 9 relatively core pipe 8 move upward, core pipe 8 relatively retaining ring 9 moves upward, but core pipe 8 relatively retaining ring 9 move downward.Setting the stage, when executing agency imposes the downward active force of setting mechanism, due to retaining ring 9 relatively core pipe 8 move downward, so retaining ring 9 is inoperative in this process.After packer setting completes, retaining ring 9 restriction setting mechanisms move upward, firmly stable to guarantee that packing element 11 sets.
Executing agency comprises that the ball seat 2, the fixed cover that are arranged on described central tube 1 lower end are located at the fluid cylinder 3 in described top connection 28, be positioned at the annular space that described fluid cylinder 3 forms with described central tube 1 and annular space is divided into the epicoele 61 of relative isolation and the piston 4 of cavity of resorption 62, the top of described central tube 1 offers the pod apertures 102 being connected with the epicoele 61 of described annular space, one end of the bottom of described piston 4 and a force transmission element 5 is inconsistent with realizable force transmission, in the present embodiment, the upper surface of force transmission element 5 is close in the bottom of piston 4.The other end of described force transmission element 5 is connected removedly with described setting mechanism.Central tube 1 has the inner chamber 101 extending along its axis direction.The top of inner chamber 101 can add pressurized fluid.The top of central tube 1 offers the pod apertures 102 communicating with inner chamber 101, for playing the effect of drainage.Ball seat 2 is arranged on the bottom of central tube 1, and after inner chamber 101 pitchings to central tube 1, ball is blocked the bottom of central tube 1, and pressurized fluid is flowed out from pod apertures 102.Fluid cylinder 3 is fixedly connected by upper prepared cap 29 and top connection 28.Force transmission element 5 is set on central tube 1 and at least part of cavity of resorption 62 that is positioned at.
Large latus rectum packer also comprises releasing gadget, described releasing gadget comprises adapter sleeve 23, the pawl spring 26 of giving up, the top of described adapter sleeve 23 and described central tube 1 are fixedly connected, described adapter sleeve 23 is fixedly connected with described ball seat 2 by the pin 22 of giving up, the top of the described pawl spring 26 of giving up is between described adapter sleeve 23 and described core pipe 8, and the top of the pawl spring 26 of giving up is by cavity of resorption 62 sealings.Described bottom of giving up pawl spring 26 is set on described ball seat 2 and with described core pipe 8 and offsets, described in the give up external diameter of pawl spring 26 be less than the internal diameter of described deblocking sliding sleeve 18 so that fall from deblocking sliding sleeve 18 at the pawl spring 26 of giving up, adapter sleeve 23.One preferred embodiment in, releasing gadget can also comprise lining 24 and holder cap 25.Lining 24 can slide along its axis direction by relatively described ball seat 2, and holder cap 25 is connected mutually with ball seat 2.Adapter sleeve 23, lining 24 and holder cap 25 are from top to bottom set on ball seat 2 successively.After pin 26 fractures of giving up, adapter sleeve 23 is separated with ball seat 2.Under the ordering about of pressurized fluid, ball seat 2 drives holder cap 25 to move downward.When holder is after cap 25 moves downward, lining 24 is moved downward by himself Action of Gravity Field.When lining 24 moves downward until lining 24 while being separated with the pawl spring 26 of giving up, the pawl spring 26 of giving up in expansion state produces the deformation of inwardly shrinking originally.Meanwhile, the pawl spring 26 of giving up relies on gravity to move downward, and from departing between core pipe 8 and adapter sleeve 23.Now, between core pipe 8 and adapter sleeve 23, produce gap, the pressurized fluid being originally present in cavity of resorption 62 is released.When force transmission element 5 and setting mechanism are separated, central tube 1, executing agency etc. can propose outside well.The internal diameter of packer after giving up is just the internal diameter of core pipe 8 like this.
Further, setting mechanism comprises pressure cap 10, the packing element 11 being set in successively from top to bottom outside described core pipe 8, described pressure cap 10 can be connected by bolt or screw etc. removedly with the force transmission element 5 in described executing agency, described anchor mechanism comprises cone 14, slips 15 and the slip spider 16 being fixedly connected by screw thread with described lower contact 17, described cone 14 is inconsistent with described packing element 11, and bottom 141 and the described core pipe 8 of described cone 14 are fixedly connected by setting pin 7.The bottom 141 of cone 14 is the bullet that radius diminishes gradually from top to bottom.The top 161 of slip spider 16 is the bullet that radius diminishes gradually from bottom to top.Slips 15 can have certain elasticity.On the outer wall of slips 15, be formed with for being fastened on the sawtooth 153 on internal surface of sleeve pipe.The top 151 of slips 15 is the bullet that radius diminishes gradually from top to bottom.The bottom 152 of slips 15 is radius from top to bottom and becomes gradually large bullet.The outer wall of the inwall on the top 151 of slips 15 and the bottom 141 of cone 14 is slidingly fitted.The outer wall on the inwall of the bottom 152 of slips 15 and the top 161 of slip spider 16 is slidingly fitted.When cone 14 moves downward, under the acting in conjunction of cone 14 and slip spider 16, the common slips 15 that promotes in the bottom 141 of cone 14 and the top of slip spider 16 161 makes slips 15 expansions, until slips 15 is stuck on the inwall of sleeve pipe by sawtooth 153.
In the present embodiment, under packer, behind precalculated position, to the interior pitching of central tube 1 of packer, ball is blocked the lower end of central tube 1.In central tube 1, add pressurized fluid again, pressurized fluid produces accumulation in central tube 1.When the height of pressurized fluid is during higher than pod apertures 102 residing position, pressurized fluid flows in epicoele in pod apertures 102.Pressurized fluid imposes downward active force to piston 4, and piston 4 drives force transmission elements 5 to prop up successively pressure cap 10, packing element 11, cone 14, cone 14 by the force transmission of pressurized fluid to setting pin 7.When setting pressure that pin 7 is subject to, be greater than while setting the maximum shear stress that pin 7 can bear, set pin 7 and cut off.Set after pin 7 fractures, continue to add pressurized fluid in central tube 1, piston 4 drives force transmission element 5 to move downward.Packing element 11 promotion cones 14 move downward like this.Cone 14 and slip spider 16 strut slips 15 until slips 15 is fixed on the inwall of sleeve pipe jointly.Now cone 14 and slips 15 can not move downward again.To the interior interpolation pressurized fluid of central tube 1, under the effect of pressurized fluid, piston 4 continues to drive force transmission element 5 to move downward again, and force transmission element 5 props up pressure cap 10, packing element 11 successively.Under the acting in conjunction of pressure cap 10 and cone 14, packing element 11 produces largest deformation realization and sets.Because not limiting the relative core pipe 8 of retaining ring 9, the zigzag structure of retaining ring 9 do not move downward.Thereby in this process, retaining ring 9 is motion thereupon also, and prop up the top of pressure cap 10 always.
While needing packer to give up after setting, in central tube 1, add pressurized fluid, when the pressure of pressurized fluid surpasses the maximum shear stress that the pin 22 of giving up can bear, the pin 22 of giving up is cut off.Now adapter sleeve 23 is separated with ball seat 2.Under the ordering about of pressurized fluid, ball seat 2 drives holder cap 25 to move downward.When holder is after cap 25 moves downward, lining 24 is moved downward by himself Action of Gravity Field.When lining 24 moves downward until lining 24 while being separated with the pawl spring 26 of giving up, the pawl spring 26 of giving up in expansion state produces the deformation of inwardly shrinking originally.The pawl spring 26 of simultaneously giving up relies on gravity to move downward, and from departing between core pipe 8 and adapter sleeve 23.Between core pipe 8 and adapter sleeve 23, produce gap like this, the pressurized fluid being originally present in cavity of resorption 62 derives from gap.When force transmission element 5 and pressure cap 10 are separated, central tube 1, executing agency and releasing gadget etc. just can propose outside well.Packer is after giving up like this, and the internal diameter of packer is the internal diameter of core pipe 8.In said process, because the zigzag structure restriction core pipe 8 relative retaining rings 9 of retaining ring 9 move downward, therefore retaining ring 9 props up the top of pressure cap 10 to prevent packing element 11 deblockings.As shown in Figure 2, after giving up, packer only has setting mechanism, anchor mechanism, solution sealing mechanism to be fixedly installed on the inwall of sleeve pipe.
While needing packer to carry out deblocking after giving up, deblocking sliding sleeve 18 is imposed to upper lifting force, deblocking sliding sleeve 18 passes to deblocking pin 20 by the upper lifting force being subject to.When the shearing force being subject to when deblocking pin 20 surpasses its limit, deblocking pin 20 is cut off.Shown in Fig. 3, after deblocking pin 20 is cut off, in continuation, carry deblocking sliding sleeve 18, deblocking sliding sleeve 18 is separated with the bottom 192 of deblocking pawl spring 19.Now, nature is shunk and recovered in the bottom 192 of deblocking pawl spring 19.The outer wall of the bottom 192 of deblocking pawl spring 19 no longer props up the inwall of lower contact 17.So lower contact 17 is separated with core pipe 8.In continuation, carry deblocking sliding sleeve 18, when the upper end of deblocking sliding sleeve 18 and the projection 193 of deblocking pawl spring 19 are when inconsistent, deblocking sliding sleeve 18 drives core pipes 8 to move upward by deblocking pawl spring 19.Because not limiting the relative retaining ring 9 of core pipe 8, the zigzag structure of retaining ring 9 do not move upward, so retaining ring 9 does not provide constraints in this process.In the process moving upward at the relative retaining ring 9 of core pipe 8, the taper surface of the first tooth 132 is along the taper surface motion of the second tooth 134, and now the first tooth 132 and the second tooth 134 are separated.Due to, packing element 10 is always in compressive state.When retaining ring 9 is during no longer with the 8 phase clamping of core pipe, packing element 11 orders about retaining ring 9 and moves upward until return to the state before its compression.The solution sealing mechanism of the large latus rectum packer in the utility model is after 20 fractures of deblocking pin, and deblocking pawl spring 19 is naturally loosening, and lower contact 17 loses sealing function with the seal section that deblocking pawl spring 19 matches, and has laid down the sealing load setting in rear packer.And conventional packer is in deblocking process, the sealing load in it exists always, and traditional packer is only improved deblocking power just can reach the effect of deblocking.Therefore the packing element 11 of the packer in the utility model is regained naturally, has reduced like this deblocking power, has improved deblocking success rate.The required deblocking power of large latus rectum packer is larger, because the removing seal for packer in the utility model is simpler and easy, is therefore applicable to large latus rectum packer.For traditional packer, deblocking power 5 may produce skew in addition, causes traditional packer to be stuck in oil well.Once this thing happens, just need to carry out large repairs to oil well.Will inevitably increase so very many workloads.With respect to traditional packer, packer in the utility model is owing to being subject to the restriction of zigzag structure, in deblocking process, not only can, so that less deblocking power just can deblocking, can also limit the bad impact that the issuable component of deblocking power produces packer.
Each embodiment in this manual all adopts the mode of going forward one by one to describe, and each embodiment stresses is the difference with other embodiment, between each embodiment identical similar part mutually referring to.
Above-described embodiment is only explanation technical conceive of the present utility model and feature, and its object is to allow person skilled in the art can understand 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 of doing according to the utility model Spirit Essence change or modify, within all should being encompassed in protection domain of the present utility model.
Claims (8)
1. a large latus rectum packer, described large latus rectum packer comprises central tube, be set in the core pipe outside described central tube, be installed in the top connection of described central tube upper end, be set in the lower contact of described core pipe lower end, between described top connection and described lower contact, be also provided with executing agency, setting mechanism, anchor mechanism, it is characterized in that: described large latus rectum packer also comprises solution sealing mechanism, described solution sealing mechanism comprises deblocking pawl spring, deblocking sliding sleeve, the top of described deblocking pawl spring and described core pipe are fixedly connected, the bottom of described deblocking pawl spring is connected by described deblocking pin removedly with described deblocking sliding sleeve, and the bottom of described deblocking pawl spring can offset with described lower contact, on the inwall of described deblocking pawl spring, be formed with for the inconsistent projection in the upper end with described deblocking sliding sleeve.
2. large latus rectum packer according to claim 1, is characterized in that: the bottom of described deblocking pawl spring has the elastic portion of radially shrinking.
3. large latus rectum packer according to claim 1, is characterized in that: on the inwall of described lower contact, be formed with for the inconsistent step in the lower surface with described deblocking sliding sleeve.
4. large latus rectum packer according to claim 1, it is characterized in that: between the top of described deblocking pawl spring and described lower contact, be also provided with sealing mechanism, described sealing mechanism comprises the joint ring of being made by graphite, the gasket ring that is positioned at described joint ring bottom, and described setting mechanism comprises the packing element of being made by polytetrafluoroethylene (PTFE).
5. large latus rectum packer according to claim 1, it is characterized in that: described large latus rectum packer also comprises the retaining ring being set in outside described core pipe, the top of described retaining ring and described executing agency are inconsistent, and the bottom of described retaining ring and described setting mechanism are inconsistent.
6. large latus rectum packer according to claim 1 or 5, it is characterized in that: described executing agency comprises the ball seat that is arranged on described central tube lower end, fixed cover is located at the fluid cylinder on described central tube, be positioned at the annular space that described fluid cylinder forms with described central tube and annular space is divided into the epicoele of relative isolation and the piston of cavity of resorption, the top of described central tube offers the pod apertures being connected with the epicoele of described annular space, one end of the bottom of described piston and a force transmission element is inconsistent, the other end of described force transmission element is connected removedly with described setting mechanism.
7. large latus rectum packer according to claim 6, it is characterized in that: described large latus rectum packer also comprises releasing gadget, described releasing gadget comprises adapter sleeve, the pawl spring of giving up, the top of described adapter sleeve and described central tube are fixedly connected, the bottom of described adapter sleeve is set on described ball seat and by the pin of giving up and is fixedly connected, the top of the described pawl spring of giving up is between described adapter sleeve and described core pipe, the bottom of the described pawl spring of giving up is set on described ball seat and with described core pipe and offsets, the external diameter of the described pawl spring of giving up is less than the internal diameter of described deblocking sliding sleeve.
8. large latus rectum packer according to claim 1, it is characterized in that: described setting mechanism comprises pressure cap, the packing element being set in successively from top to bottom outside described core pipe, described pressure cap is connected removedly with described executing agency, described anchor mechanism comprises cone, slips and the slip spider being connected mutually with described lower contact, described cone and described packing element are inconsistent, and the bottom of described cone and described core pipe are fixedly connected by setting pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420164063.6U CN203847056U (en) | 2014-04-04 | 2014-04-04 | Large-drift-diameter packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420164063.6U CN203847056U (en) | 2014-04-04 | 2014-04-04 | Large-drift-diameter packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203847056U true CN203847056U (en) | 2014-09-24 |
Family
ID=51560090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420164063.6U Expired - Fee Related CN203847056U (en) | 2014-04-04 | 2014-04-04 | Large-drift-diameter packer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203847056U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593344A (en) * | 2016-12-26 | 2017-04-26 | 中国石油天然气股份有限公司 | Chemical deblocking compression fracturing packer |
| CN115370317A (en) * | 2022-09-21 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | High-temperature high-pressure packer |
-
2014
- 2014-04-04 CN CN201420164063.6U patent/CN203847056U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106593344A (en) * | 2016-12-26 | 2017-04-26 | 中国石油天然气股份有限公司 | Chemical deblocking compression fracturing packer |
| CN115370317A (en) * | 2022-09-21 | 2022-11-22 | 惟其信石油机械(天津)有限公司 | High-temperature high-pressure packer |
| CN115370317B (en) * | 2022-09-21 | 2024-07-23 | 惟其信石油机械(天津)有限公司 | High-temperature high-pressure packer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140924 |