CN205373978U - Packing element sealing performance testing arrangement - Google Patents
Packing element sealing performance testing arrangement Download PDFInfo
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- CN205373978U CN205373978U CN201521062270.1U CN201521062270U CN205373978U CN 205373978 U CN205373978 U CN 205373978U CN 201521062270 U CN201521062270 U CN 201521062270U CN 205373978 U CN205373978 U CN 205373978U
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- packing element
- top connection
- central shaft
- developmental tube
- sealing property
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Abstract
The utility model discloses a packing element sealing performance testing arrangement, it includes: set up the top connection of through -hole, one end with the developmental tube that the top connection is connected, with the lower clutch that the developmental tube other end is connected, the top connection the developmental tube with the lower clutch forms a cavity, from the through -hole of top connection penetrates the center pin of cavity, the center pin can be relative axial displacement is followed in the top connection, the center pin with form the annular space that is used for loading the packing element between the developmental tube, the top connection can with the upper end of packing element offsets, the lower extreme of center pin is provided with and is used for to living the locating part of packing element lower extreme, the lower clutch is used for being connected with the hydraulic pressure test machine, the upper end of center pin be used for with the hydraulic pressure test machine is connected. The utility model discloses can simulate the process of packing element compression, realize the indoor experiment to the packing element sealability, simultaneously, can also carry out the pressure -bearing procedural test of packing element.
Description
Technical field
This utility model relate to a kind of oil-gas mining technical field, particularly to a kind of packing element sealing property testing equipment.
Background technology
At present, the downhole packing instruments such as bridging plug will be used in Oil/gas Well staged fracturing, separate zone production or Operating Pressure to insulate payzone or construction target zone.Use downhole packing instrument can oil pipe be blocked, it is possible to play lower tubular column under no killing well, not open flow state, use downhole packing instrument can also carry out casing section pressure break and then improve the recovery ratio of low-permeability oil gas well simultaneously.Downhole packing instrument is as the main downhole tool of petroleum exploration and development, and it has been widely used in the every field of oil exploitation technology.
In downhole packing instrument, the sealing property of packing element is to weigh the important indicator of downhole packing tool performance, the miscellaneous part of packing element Yu isolating tool is mainly assemblied together by existing packing element experiments of sealing performance method, is set by entirety, tests envelope etc. and test link and be verified.The shortcoming of this test method is that test structure is complicated, experimentation cost is high, and occurs not easily judging reason when leaking.
Utility model content
In order to overcome the drawbacks described above of prior art, this utility model embodiment technical problem to be solved there is provided a kind of packing element sealing property testing equipment, and when not needing other parts of isolating tool, it just can complete the test to packing element performance.
The concrete technical scheme of this utility model embodiment is:
A kind of packing element sealing property testing equipment, comprising: offer the top connection of through hole；The developmental tube that one end is connected with described top connection；The lower contact being connected with the described developmental tube other end；Described top connection, described developmental tube and described lower contact form a cavity；Penetrate the central shaft of described cavity from the through hole of described top connection, described central shaft can be axially moveable in relatively described top connection, forms the annular space for loading packing element between described central shaft and described developmental tube；Described top connection can offset with the upper end of described packing element, and the lower end of described central shaft is provided with the locating part for propping up described packing element lower end；Described lower contact is for being connected with hydraulic dynamometer, and the upper end of described central shaft is for being connected with described hydraulic dynamometer.
Preferably, described central shaft being arranged with pipe, described pipe is positioned at described cavity, and it is for propping up the upper end of described packing element.
Preferably, the upper end of described central shaft is connected to upper connecting rod, and described upper connecting rod is for being connected with hydraulic dynamometer.
Preferably, described central shaft being arranged with locking piece, described locking piece is positioned at outside described cavity.
Preferably, described locking piece includes nut, and described central shaft offers screw thread, and described nut passes through described screw thread to move on described central shaft.
Preferably, described lower contact offers for connecting described cavity and the first extraneous perforate, between sidewall and the inwall of described developmental tube of described locating part, there is gap.
Preferably, the lower end of described lower contact is connected to lower link, and described lower link is for being connected with hydraulic dynamometer.
Preferably, described lower contact offering screwed hole, described lower link is connected with described lower contact by described screwed hole, and described first perforate is positioned at described screwed hole place, and it connects described cavity and described screwed hole.
Preferably, described top connection is connected by screw thread with described developmental tube upper end, and described lower contact is connected by screw thread with the lower end of described developmental tube.
Preferably, between the outer wall of described pipe and the inwall of described top connection or the inwall of developmental tube, there is gap, described top connection offers for connecting described cavity and the second extraneous perforate.
The technical solution of the utility model has following notable beneficial effect:
For the packing element of the downhole packing instruments such as bridging plug, this utility model provides a kind of packing element sealing property testing equipment, and it can simulate the process of packing element compression, it is achieved the laboratory test to packing element sealability.Meanwhile, this packing element sealing property testing equipment can be connected with Hydraulic Station, and then can carry out the pressure-bearing procedural test of packing element.
This utility model, when needs carry out packing element experiments of sealing performance again, only need to have been ressembled this assay device, can realize reusable effect, it is possible to effectively reduce experimentation cost, improves test efficiency.
Accompanying drawing explanation
Accompanying drawing described here only for illustrative purposes, and is not intended to limit this utility model scope of disclosure by any way.It addition, the shape of each parts in figure and proportional sizes etc. are only schematic, it is adapted to assist in understanding of the present utility model, is not the shape and the proportional sizes that specifically limit each parts of this utility model.Those skilled in the art is under instruction of the present utility model, it is possible to select various possible shape and proportional sizes to implement this utility model as the case may be.
Fig. 1 is this utility model packing element sealing property testing equipment structural representation in packing element original state.
Fig. 2 is the structural representation that this utility model packing element sealing property testing equipment sets state at packing element.
Fig. 3 is the schematic diagram that this utility model packing element sealing property testing equipment is suppressed in lower contact place.
Fig. 4 is the schematic diagram that this utility model packing element sealing property testing equipment is suppressed in top connection place.
The accompanying drawing labelling of the figures above: 1, hydraulic dynamometer；2, top connection；21, the second perforate；3, lower contact；31, the first perforate；32, screwed hole；4, developmental tube；5, cavity；6, lower link；7, central shaft；71, locating part；8, annular space；9, pipe；10, gap；11, upper connecting rod；12, locking piece；13, packing element sealing property testing equipment；14, Hydraulic Station；15, packing element；16, spacer ring.
Detailed description of the invention
Description in conjunction with accompanying drawing and this utility model detailed description of the invention, it is possible to clearly understand details of the present utility model.But, detailed description of the invention of the present utility model described here, only it is used for explaining the purpose of this utility model, and can not be understood as by any way is to restriction of the present utility model.Under instruction of the present utility model, technical staff is it is contemplated that based on arbitrarily possible deformation of the present utility model, these are regarded as belonging to scope of the present utility model.
Fig. 1 is this utility model packing element sealing property testing equipment structural representation in packing element original state, as it is shown in figure 1, a kind of packing element sealing property testing equipment, comprising: offer the top connection 2 of through hole；The developmental tube 4 that one end is connected with top connection 2；The lower contact 3 being connected with developmental tube 4 other end；Top connection 2, developmental tube 4 and lower contact 3 form a cavity 5；Penetrate the central shaft 7 of cavity 5 from the through hole of top connection 2, central shaft 7 can be axially moveable relatively in top connection 2, forms the annular space for loading packing element 15 between central shaft 7 and developmental tube 4；Top connection 2 can offset with the upper end of packing element, and the lower end of central shaft 7 is provided with the locating part 71 for propping up packing element lower end；Lower contact 3 is for being connected with hydraulic dynamometer, and the upper end of central shaft 7 is for being connected with hydraulic dynamometer.
Specifically, the top connection 2 cylindrical shape in upper end closed, offer through hole in the center of the wall of the upper end of top connection 2, the circular in cross-section of through hole, this through hole wears in this top connection 2 for central shaft 7.The inwall of top connection 2 cylinder is provided with the screw thread for being connected with developmental tube 4.
The developmental tube 4 that upper end is connected with top connection 2, the circular in cross-section of this developmental tube 4, the upper end of developmental tube 4 offers screw thread, and it is for being connected with top connection 2.The lower end of developmental tube 4 also offers screw thread, and it is for being connected with lower contact 3.The inside of developmental tube 4 can be filled into packing element 15, and then packing element 15 is carried out performance test.The body material of developmental tube 4 is determined by the pressure in test requirements document, and this is not restricted.Such as, for holding the sleeve pipe or oil pipe that internal pressure capability is 70MPa, the tubing of similar P110 rank should be used to make.
With the lower contact 3 that developmental tube 4 lower end is connected, lower contact 3 is the cylindrical shape of lower end closed, offers the screw thread for being connected with experiment tube on the inwall of lower contact 3 cylinder.Offering screwed hole 32 on the wall of the lower end that lower contact 3 is closed, this screwed hole 32 is used for connecting lower link 6.When top connection 2, developmental tube 4 are connected with lower contact 3 three, between top connection 2, developmental tube 4 and lower contact 3, form a cavity 5, when packing element 15 is carried out performance test, be used for being packed into packing element 15 in this cavity 5.
Lower contact 3 lower end is provided with the lower link 6 for being connected with hydraulic dynamometer 1, and the upper end of lower link 6 offers screw thread, and then lower link 6 can be connected with the screwed hole 32 of lower contact 3.
The central shaft 7 in cavity 5 is penetrated from the through hole of top connection 2, central shaft 7 can be moved with top connection 2, central shaft 7 is positioned at the upper end outside cavity 5 for being connected with hydraulic dynamometer 1, central shaft 7 is positioned at the lower end of cavity 5 and is provided with the locating part 71 for propping up packing element 15 lower end, and this locating part 71 can pass through screw thread with central shaft 7 and be connected.The annular space 8 for loading packing element 15 is formed between central shaft 7 and developmental tube 4, when the performance carrying out packing element 15 is arranged, packing element 15 is set on central shaft 7, it is arranged in annular space 8, the upper end of packing element 15 props up the inwall of top connection 2, and the lower end of packing element 15 props up locating part 71, so when central shaft 7 drives locating part 71 to move to top connection 2 direction, packing element 15 is compressed by top connection 2 and locating part 71, and then to make packing element 15 can be set state.
Operating principle of the present utility model is as follows: top connection 2 be connected with developmental tube 4, central shaft 7 is worn in top connection 2, now, it is set on the central shaft 7 in developmental tube 4 needing the packing element 15 carrying out testing, in order to better simulate the actual condition of bridging plug class downhole packing instrument, can on central shaft 7 sheathed two packing elements 15, and between packing element 15, spacer ring 16 can be set, it is screwed into locating part 71 in one end of central shaft 7, the other end of developmental tube 4 connects lower contact 3, and in lower contact 3, it is screwed into lower link 6, the upper end of central shaft 7 and lower link 6 are respectively connecting on hydraulic dynamometer 1, by hydraulic dynamometer 1, central shaft 7 is moved to top connection 2 direction.Fig. 2 is the structural representation that this utility model packing element sealing property testing equipment 13 sets state at packing element 15, as in figure 2 it is shown, now, packing element 15 is compressed by top connection 2 and locating part 71, and then to make packing element 15 can be set state.Characteristic curve between the pressure (namely equal to setting pressure) and packing element 15 decrement that set hydraulic dynamometer 1 accurate recording hydraulic dynamometer 1 output in process of packing element 15, by this characteristic curve and then the performance parameter understanding this packing element 15.
For the packing element 15 of the downhole packing instruments such as bridging plug, this utility model provides a kind of packing element sealing property testing equipment 13, and it can simulate the process of packing element 15 compression, it is achieved the laboratory test to packing element 15 sealability.This utility model, when needs carry out packing element 15 experiments of sealing performance again, only need to have been ressembled this assay device, can realize reusable effect, it is possible to effectively reduce experimentation cost, improves test efficiency.
In one preferred embodiment, the upper end of central shaft 7 is connected to upper connecting rod 11, upper connecting rod 11 is for being connected with hydraulic dynamometer 1, so, can avoid hydraulic dynamometer 1 Clamping Center axle 7 that central shaft 7 causes damage, secondly, the diameter of central shaft 7 needs to close with the diameter compatible of test packing element 15, and hydraulic dynamometer 1 not easily directly clamps the central shaft 7 under different-diameter.
In one preferred embodiment, central shaft 7 being arranged with locking piece 12, locking piece 12 is positioned at outside cavity 5.This locking piece 12 can include nut, and central shaft 7 offers screw thread, and nut passes through screw thread to move on central shaft 7.Compressed by hydraulic dynamometer 1 developmental tube 4 in when the packing element 15 of test is in and sets, at this point it is possible to locking piece 12 to be locked to the position above top connection 2, for instance when locking piece 12 is nut, it is possible to rotation nut is to top connection 2 place, and then fastening nut.When packing element sealing property testing equipment 13 is from when taking off hydraulic dynamometer 1, owing to central shaft 7 locking is made it cannot move to lower contact 3 direction by locking piece 12, so, it is possible to keep the packing element 15 in developmental tube 4 to be always held at compressive state.
In one preferred embodiment, central shaft 7 being arranged with pipe 9, pipe 9 is positioned at cavity 5, and it is for propping up the upper end of packing element 15.When packing element 15 is set on central shaft 7, owing to the length of packing element 15 is different, it is possible to by the pipe 9 of different length and then make the two ends up and down of packing element 15 be propped up respectively, it is simple to test.
In a preferred embodiment, between the outer wall of pipe 9 and the inwall of top connection 2 or the inwall of developmental tube 4, there is gap 10.Top connection 2 offers for connecting cavity 5 and the second extraneous perforate 21.So when developmental tube 4 is built with test packing element 15, by gap 10 and the second perforate 21, so that one end of packing element 15 is connected with the external world, and then can passing through the second perforate 21 to injecting hydraulic pressure in developmental tube 4, hydraulic pressure is by gap 10 and then the one end that can arrive packing element 15.Offering screwed hole 32 in lower contact 3, lower link 6 is connected with lower contact 3 by screwed hole 32, and the first perforate 31 is positioned at screwed hole place, its connection cavity 5 and screwed hole 32.Lower contact 3 offers for connecting cavity 5 and the first extraneous perforate 31, between sidewall and the inwall of developmental tube 4 of locating part 71, there is gap.When lower link 6 is from after backing out lower contact 3, by the first perforate 31, being connected with the external world by the first perforate 31 in developmental tube 4.
When packing element sealing property testing equipment 13 is from, when taking off hydraulic dynamometer 1, making it cannot move to lower contact 3 direction central shaft 7 locking by locking piece 12, keep what the packing element 15 in developmental tube 4 was always held at compression to set state.Now, pull bar 6 is backed out from lower contact 3, Fig. 3 is the schematic diagram that this utility model packing element sealing property testing equipment 13 is suppressed at lower contact 3 place, as shown in Figure 3, being connected with the screwed hole 32 in lower contact 3 by the joint of Hydraulic Station 14, by the first perforate 31, the pressure transmission of Hydraulic Station 14 is one end of close lower contact 3 packing element 15 to developmental tube 4 inside, so, test packing element 15 sets whether the bearing capacity between central shaft 7 and developmental tube 4 meets sealing pressure requirements.If the pressure of Hydraulic Station 14 is less than the sealability of packing element 15, then pressure liquid will not flow out from the second perforate 21；If the pressure of Hydraulic Station 14 exceedes the sealability of packing element 15, then pressure liquid flows out from the second perforate 21, so just can test out the sealability of packing element 15.Fig. 4 is the schematic diagram that this utility model packing element sealing property testing equipment 13 is suppressed at top connection 2 place, as shown in Figure 4, the joint of Hydraulic Station 14 can also be connected with the second perforate 21 in top connection 2, so, it is possible to packing element 15 is tested near one end of top connection 2.If the pressure of Hydraulic Station 14 is less than the sealability of packing element 15, then pressure liquid will not flow out from the first perforate 31；If the pressure of Hydraulic Station 14 exceedes the sealability of packing element 15, then pressure liquid flows out from the first perforate 31.
The packing element 15 of bridging plug class downhole packing instrument generally has two processes in real work, one is the compression process of packing element 15, namely set, two is the pressure-bearing process of packing element 15, use this assay device to utilize hydraulic dynamometer 1 and Hydraulic Station 14 just can simulate packing element 15 above-mentioned two process completely, the respective performances parameter obtaining packing element 15 can also be tested simultaneously.
Each embodiment in this specification all adopts the mode gone forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually referring to.
Above-described embodiment only for technology of the present utility model design and feature are described, its object is to allow person skilled in the art will appreciate that content of the present utility model and to implement according to this, can not limit protection domain of the present utility model with this.All equivalences made according to this utility model spirit change or modify, and all should be encompassed within protection domain of the present utility model.
Claims (10)
1. a packing element sealing property testing equipment, it is characterised in that comprising:
Offer the top connection of through hole；
The developmental tube that one end is connected with described top connection；
The lower contact being connected with the described developmental tube other end；
Described top connection, described developmental tube and described lower contact form a cavity；
Penetrate the central shaft of described cavity from the through hole of described top connection, described central shaft can be axially moveable in relatively described top connection, forms the annular space for loading packing element between described central shaft and described developmental tube；
Described top connection can offset with the upper end of described packing element, and the lower end of described central shaft is provided with the locating part for propping up described packing element lower end；
Described lower contact is for being connected with hydraulic dynamometer, and the upper end of described central shaft is for being connected with described hydraulic dynamometer.
2. packing element sealing property testing equipment according to claim 1, it is characterised in that being arranged with pipe on described central shaft, described pipe is positioned at described cavity, it is for propping up the upper end of described packing element.
3. packing element sealing property testing equipment according to claim 1, it is characterised in that the upper end of described central shaft is connected to upper connecting rod, described upper connecting rod is for being connected with hydraulic dynamometer.
4. packing element sealing property testing equipment according to claim 1, it is characterised in that being arranged with locking piece on described central shaft, described locking piece is positioned at outside described cavity.
5. packing element sealing property testing equipment according to claim 4, it is characterised in that described locking piece includes nut, described central shaft offers screw thread, and described nut passes through described screw thread to move on described central shaft.
6. packing element sealing property testing equipment according to claim 1, it is characterised in that offer in described lower contact for connecting described cavity and the first extraneous perforate, there is gap between sidewall and the inwall of described developmental tube of described locating part.
7. packing element sealing property testing equipment according to claim 6, it is characterised in that the lower end of described lower contact is connected to lower link, described lower link is for being connected with hydraulic dynamometer.
8. packing element sealing property testing equipment according to claim 7, it is characterized in that, described lower contact offers screwed hole, and described lower link is connected with described lower contact by described screwed hole, described first perforate is positioned at described screwed hole place, and it connects described cavity and described screwed hole.
9. packing element sealing property testing equipment according to claim 1, it is characterised in that described top connection is connected by screw thread with described developmental tube upper end, described lower contact is connected by screw thread with the lower end of described developmental tube.
10. packing element sealing property testing equipment according to claim 2, it is characterized in that, there is gap between the outer wall of described pipe and the inwall of described top connection or the inwall of described developmental tube, described top connection offers for connecting described cavity and the second extraneous perforate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521062270.1U CN205373978U (en) | 2015-12-17 | 2015-12-17 | Packing element sealing performance testing arrangement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521062270.1U CN205373978U (en) | 2015-12-17 | 2015-12-17 | Packing element sealing performance testing arrangement |
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| Publication Number | Publication Date |
|---|---|
| CN205373978U true CN205373978U (en) | 2016-07-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521062270.1U Active CN205373978U (en) | 2015-12-17 | 2015-12-17 | Packing element sealing performance testing arrangement |
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| CN (1) | CN205373978U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677496A (en) * | 2017-09-26 | 2018-02-09 | 中石化石油工程技术服务有限公司 | Bridging plug sets experiment test device |
| CN114061861A (en) * | 2020-08-04 | 2022-02-18 | 中国石油天然气集团有限公司 | Loading device for sealing rubber cylinder and sealing performance testing device for sealing rubber cylinder |
-
2015
- 2015-12-17 CN CN201521062270.1U patent/CN205373978U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107677496A (en) * | 2017-09-26 | 2018-02-09 | 中石化石油工程技术服务有限公司 | Bridging plug sets experiment test device |
| CN114061861A (en) * | 2020-08-04 | 2022-02-18 | 中国石油天然气集团有限公司 | Loading device for sealing rubber cylinder and sealing performance testing device for sealing rubber cylinder |
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Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: China National Petroleum Corp. Patentee after: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Patentee after: BEIJING PETROLEUM MACHINERY FACTORY Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: DRILLING RESEARCH INSTITUTE OF CHINA NATIONAL PETROLEUM Co. Patentee before: BEIJING PETROLEUM MACHINERY FACTORY Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee after: BEIJING PETROLEUM MACHINERY Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: China National Petroleum Corp. Patentee before: CNPC Drilling Engineering Technology Research Institute Co.,Ltd. Patentee before: BEIJING PETROLEUM MACHINERY FACTORY |
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| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230621 Address after: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee after: BEIJING PETROLEUM MACHINERY Co.,Ltd. Patentee after: BEIJING KEMBL PETROLEUM TECHNOLOGY DEVELOPMENT Co.,Ltd. Address before: 100007 No. 9 North Main Street, Dongcheng District, Beijing, Dongzhimen Patentee before: CHINA NATIONAL PETROLEUM Corp. Patentee before: CNPC ENGINEERING TECHNOLOGY R & D Co.,Ltd. Patentee before: BEIJING PETROLEUM MACHINERY Co.,Ltd. |