CN103630349A - Testing device for compression packers - Google Patents
Testing device for compression packers Download PDFInfo
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- CN103630349A CN103630349A CN201310659115.7A CN201310659115A CN103630349A CN 103630349 A CN103630349 A CN 103630349A CN 201310659115 A CN201310659115 A CN 201310659115A CN 103630349 A CN103630349 A CN 103630349A
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- 238000012360 testing method Methods 0.000 title claims abstract description 32
- 230000006835 compression Effects 0.000 title claims abstract description 21
- 238000007906 compression Methods 0.000 title claims abstract description 21
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 238000003825 pressing Methods 0.000 claims description 3
- 239000012530 fluid Substances 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000004088 simulation Methods 0.000 description 2
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 230000033558 biomineral tissue development Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
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Abstract
The invention discloses a testing device for compression packers. The testing device comprises a shaft body, an upper sealing structure and a load loading rod. The load loading rod penetrates the upper sealing structure to extend into the shaft body. The sealing structure comprises an external internal-part sealing head and an internal workpiece sealing head. The internal-part sealing head and the internal workpiece sealing head are sealed through a seal ring, are positioned through a shaft shoulder and are compressed by an upper seal ring to realize axial positioning. Pressure inlets are arranged on the shaft body and the side wall of the internal-part sealing head respectively, and are connected with an inner cavity of the shaft body and an external pressure guide device respectively. The testing device fully simulates complex working conditions of test workpieces in actual working and is simple in structure, convenient to demount and good in interchangeability.
Description
Technical field
The present invention relates to the test unit of Oil/gas Well downhole operation equipment, refer to particularly a kind of compression packer test unit.
Background technology
Compression packer refer to there is elastic sealing elements, and by this packing annular space, isolated payzone, to control the underground operation tool of production fluid or fluid injection, protective casing.The scope of application of compression packer is wide, each production run that almost spreads all over exploration and development.Its action principle is: under the effect of external force, compression packer moves axially and the circumferentially action such as rotation, to reach sealing annular gap, to prevent the object that fluid passes through.Because working environment under Oil/gas Well is very severe, this just requires to need through strict simulation test before product export, to guarantee that product meets request for utilization.
Conventional compression packer test unit only can be realized the static state high-temperature high-potting of packer, can not simulate packer under Oil/gas Well, the action such as inside pipe casing sets, deblocking (rotate, press down, on carry).After having tested, more can not from test unit, test piece, test casing be taken out separately.
Summary of the invention
Object of the present invention is exactly that a kind of simple in structure, dismounting is easy, sealing is reliable, interchangeability is strong compression packer test unit will be provided.
For achieving the above object, the compression packer test unit that the present invention is designed, comprise pit shaft cylindrical shell, be arranged on the top seal structure in pit shaft cylinder lumen and extend into the load load bar in pit shaft cylindrical shell through top seal structure, its special character is:
Described pit shaft cylindrical shell is barrel-like structure, is provided with the ring-shaped step matching with top seal structure in its inner chamber, and the barrel middle part of described pit shaft cylindrical shell is provided with entrance pressure mouth on cylindrical shell, and the barrel bottom of described pit shaft cylindrical shell is provided with entrance pressure mouth under cylindrical shell;
In order to make sealing effectiveness better, described top seal structure comprises internals seal head and Work piece sealing head, described internals seal head is set the inner chamber ring-shaped step place that is located in pit shaft cylindrical shell by its top Huan Tai, and by being arranged on O-ring seal and internals lower seal and pit shaft cylinder inboard wall in the internals on its outer wall, be tightly connected, in described internals, between O-ring seal and internals lower seal, be formed with annulus in order to introduce fluid;
Described internals seal head top is provided with internals threaded pressure ring, described internals threaded pressure ring outer wall and pit shaft cylinder inboard wall threaded engagement, thus butt compresses internals seal head; The sidewall middle part of described internals seal head is provided with internals impulse mouth, and described internals impulse mouth communicates with entrance pressure mouth on cylindrical shell by annulus, is convenient to external pressure to introduce pit shaft cylinder lumen center;
Described Work piece sealing head is set the inner chamber top of being located in internals seal head by its top Huan Tai, and be connected with internals seal head inner wall sealing by the Work piece sealing circle being arranged on its outer wall, described Work piece sealing crown portion is provided with workpiece threaded pressure ring, described workpiece threaded pressure ring outer wall coordinates with internals threaded pressure ring inner thread, thus butt workpiece pressing seal head;
Described load load bar stretches to pit shaft cylindrical shell bottom through workpiece threaded pressure ring, Work piece sealing head and internals seal head successively, and by the load bar O-ring seal being arranged on its outer wall, be connected with Work piece sealing head inner wall sealing, described load load bar bottom is used for installing tested workpiece.
In order to prevent workpiece damage to pit shaft cylindrical shell in test process, reduce cost and reduce displacement difficulty, described internals seal head lower end is provided with thin wall casing for convenience detach, described thin wall casing upper end outer wall coordinates with internals seal head inner thread, described thin wall casing lower end extends to pit shaft cylinder body bottom, between described thin wall casing upper end outer wall and internals seal head inwall, be also provided with O RunddichtringO, make the sealing effectiveness of thin wall casing and internals seal head better, poor in order to intercept the fluid that upper and lower entrance pressure mouth produces.
Further, in order to prevent that the axial rotation of internals seal head from making location inaccurate, the top ring platform outer wall of described internals seal head and the inner chamber ring-shaped step inwall junction of pit shaft cylindrical shell are provided with plane of orientation, thereby can prevent that internals seal head from twisting with respect to pit shaft cylindrical shell.
Preferably, for convenient, load, on described load load bar, be arranged at intervals with a plurality of square torsion loading interfaces.
Further, for convenient, load, described workpiece threaded pressure ring and internals threaded pressure ring top are provided with radially mounting hole.
Again further, in described internals, the size of O-ring seal is greater than the size of internals lower seal, thereby is convenient to the mounting or dismounting of internals seal head.
Again further, on the outer wall of described load load bar, be arranged at intervals with multiple tracks load bar O-ring seal, thereby be convenient to it, at different sections, be connected with Work piece sealing head inner wall sealing, increase the sealing effective length of load load bar simultaneously.
The invention has the advantages that: whole is Demountable, and pit shaft cylindrical shell top is provided with internal thread and square interface, is convenient to the location of internals seal head.Pit shaft sealing surface adopts stepped sealed, when being convenient to installation, can also between two sealing surfaces, introduce pressure medium; Sealing between face and face is provided with O-ring seal, makes sealing better, and this test unit has fully been simulated compression packer very severe situation of working environment under Oil/gas Well, and simple in structure, easy to process, dismounting is easy, good sealing effect, has good interchangeability.
Accompanying drawing explanation
Fig. 1 is a kind of compression packer test unit structural representation.
Fig. 2 is the detailed marking structure schematic diagram of Fig. 1.
Fig. 3 is the A-A sectional structure schematic diagram of Fig. 2
Fig. 4 is the structural representation of internals seal head assembly in Fig. 2.
In figure: pit shaft cylindrical shell 1(wherein: entrance pressure mouth 1.1 on cylindrical shell, entrance pressure mouth 1.2 under cylindrical shell), top seal structure 2(is wherein: internals seal head 2.1, Work piece sealing head 2.2, in internals, O-ring seal 2.3, internals lower seal 2.4, Work piece sealing circle 2.5, internals threaded pressure ring 2.6, internals impulse mouth 2.7, workpiece threaded pressure ring 2.8, thin wall casing 2.9, O RunddichtringO 2.10, ring-like gap 2.11, plane of orientation 2.12, radially mounting hole 2.13), load load bar 3(is wherein: load bar O-ring seal 3.1, square torsion loading interface 3.2), test piece 4.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is described in further detail.
Compression packer test unit shown in figure, comprise pit shaft cylindrical shell 1, be arranged on the top seal structure 2 in pit shaft cylindrical shell 1 inner chamber and extend into the load load bar 3 in pit shaft cylindrical shell 1 through top seal structure 2, pit shaft cylindrical shell 1 is barrel-like structure, in its inner chamber, be provided with the ring-shaped step matching with top seal structure 2, the barrel middle part of pit shaft cylindrical shell 1 is provided with entrance pressure mouth 1.1 on cylindrical shell, and the barrel bottom of pit shaft cylindrical shell 1 is provided with entrance pressure mouth 1.2 under cylindrical shell; Top seal structure 2 comprises internals seal head 2.1 and Work piece sealing head 2.2, internals seal head 2.1 is set the inner chamber ring-shaped step place that is located in pit shaft cylindrical shell 1 by its top Huan Tai, and be connected with pit shaft cylindrical shell 1 inner wall sealing with internals lower seal 2.4 by being arranged on O-ring seal 2.3 in the internals on its outer wall, in internals, the size of O-ring seal 2.3 is greater than the size with internals lower seal 2.4, thereby is convenient to the mounting or dismounting of internals seal head 2.1; In described internals, between O-ring seal 2.3 and internals lower seal 2.4, be formed with annulus 2.11, facilitate the introducing of fluid;
Internals seal head 2.1 tops are provided with internals threaded pressure ring 2.6, and described internals threaded pressure ring 2.6 outer walls coordinate with pit shaft cylindrical shell 1 inner thread, thereby butt compresses internals seal head 2.1; The sidewall middle part of described internals seal head 2.1 is provided with internals impulse mouth 2.7, internals impulse mouth 2.7 communicates with entrance pressure mouth 1.1 on cylindrical shell by annulus 2.11, be convenient to external pressure to introduce pit shaft cylindrical shell 1 inner chamber top, under cylindrical shell, entrance pressure mouth 1.2 is introduced external pressure pit shaft cylindrical shell 1 inner chamber bottom, mineralization pressure is poor like this, more can real simulation goes out the work condition environment of tested workpiece 4; The top ring platform outer wall of internals seal head 2.1 and the inner chamber ring-shaped step inwall junction of pit shaft cylindrical shell 1 are provided with plane of orientation 2.12, thereby can prevent that internals seal head 2.1 is with respect to 1 twisting of pit shaft cylindrical shell.
Work piece sealing head 2.2 is set the inner chamber top of being located in internals seal head 2.1 by its top Huan Tai, and be connected with internals seal head 2.1 inner wall sealings by the Work piece sealing circle 2.5 being arranged on its outer wall, described Work piece sealing head 2.2 tops are provided with workpiece threaded pressure ring 2.8, described workpiece threaded pressure ring 2.8 outer walls coordinate with internals threaded pressure ring 2.6 inner threads, thus butt workpiece pressing seal head 2.2;
In order to prevent workpiece damage to pit shaft cylindrical shell in test process, reduce cost and reduce displacement difficulty, internals seal head 2.1 lower ends are provided with thin wall casing 2.9, described thin wall casing 2.9 upper end outer walls coordinate with internals seal head 2.1 inner threads, described thin wall casing 2.9 lower ends extend to pit shaft cylindrical shell 1 bottom, between described thin wall casing 2.9 upper end outer walls and internals seal head 2.1 inwalls, are also provided with O RunddichtringO 2.10.
For convenient, load, workpiece threaded pressure ring 2.8 and internals threaded pressure ring 2.6 tops are provided with radially mounting hole 2.13.
The course of work of the present invention is as follows:
First internals seal head 2.1 is packed in pit shaft cylindrical shell 1, now, the square structure of internals seal head 2.1 heads coordinates with the square structure of pit shaft cylindrical shell 1 inner chamber, limited the circumferential rotation of internals seal head 2.1, meanwhile, 2.1 of pit shaft cylindrical shell 1 and internals seal heads are realized sealing by O-ring seal in internals 2.3 and internals lower seal 2.4; Then internals threaded pressure ring 2.6 is packed in pit shaft cylindrical shell 1, until contact with internals seal head 2.1 upper surfaces, now, internals threaded pressure ring 2.6 is by the auto-lock function of screw thread, limit the axial displacement of internals seal head 2.1, realized the location completely of internals seal head 2.1.
Then after test piece 4 being connected with load load bar 3, pack in pit shaft cylindrical shell 1, again Work piece sealing head 2.2 is packed in internals seal head 2.1, the shaft shoulder by workpiece threaded pressure ring 2.8 and Work piece sealing head 2.2 carries out Work piece sealing head 2.2 and internals seal head 2.1 axial location between the two, Work piece sealing head 2.2 is realized sealing with internals seal head 2.1 by Work piece sealing circle 2.5, and Work piece sealing head 2.2 is realized sealing with load load bar 3 by loading O-ring seal 3.1; Then workpiece threaded pressure ring 2.8 is screwed in to internals threaded pressure ring 2.6, until contact with Work piece sealing head 2.2 upper surfaces, now, Work piece sealing head 2.2 is located completely and is sealed.
During test, can make load load bar 3 axially displaced or rotate by corresponding mechanism, realize the various experiments actions of compression packer, after off-test, can successively load load bar 3, test piece 4 and internals seal head 2.1 be taken out from pit shaft cylindrical shell 1.
Claims (7)
1. a compression packer test unit, comprise pit shaft cylindrical shell (1), be arranged on the top seal structure (2) in pit shaft cylindrical shell (1) inner chamber and extend into the load load bar (3) in pit shaft cylindrical shell (1) through top seal structure (2), it is characterized in that:
Described pit shaft cylindrical shell (1) is barrel-like structure, in its inner chamber, be provided with the ring-shaped step matching with top seal structure (2), the barrel middle part of described pit shaft cylindrical shell (1) is provided with entrance pressure mouth (1.1) on cylindrical shell, and the barrel bottom of described pit shaft cylindrical shell (1) is provided with entrance pressure mouth (1.2) under cylindrical shell;
Described top seal structure (2) comprises internals seal head (2.1) and Work piece sealing head (2.2), described internals seal head (2.1) is set the inner chamber ring-shaped step place that is located in pit shaft cylindrical shell (1) by its top Huan Tai, and by being arranged on O-ring seal in the internals on its outer wall (2.3), be connected with pit shaft cylindrical shell (1) inner wall sealing with internals lower seal (2.4), between O-ring seal in described internals (2.3) and internals lower seal (2.4), be formed with annulus (2.11);
Described internals seal head (2.1) top is provided with internals threaded pressure ring (2.6), and described internals threaded pressure ring (2.6) outer wall coordinates with pit shaft cylindrical shell (1) inner thread, thereby butt compresses internals seal heads (2.1); The sidewall middle part of described internals seal head (2.1) is provided with internals impulse mouth (2.7), described internals impulse mouth (2.7) communicates with entrance pressure mouth (1.1) on cylindrical shell by annulus (2.11), is convenient to external pressure to introduce pit shaft cylindrical shell (1) lumen centers;
Described Work piece sealing head (2.2) is set the inner chamber top of being located in internals seal head (2.1) by its top Huan Tai, and be connected with internals seal head (2.1) inner wall sealing by the Work piece sealing circle (2.5) being arranged on its outer wall, described Work piece sealing head (2.2) top is provided with workpiece threaded pressure ring (2.8), described workpiece threaded pressure ring (2.8) outer wall coordinates with internals threaded pressure ring (2.6) inner thread, thus butt workpiece pressing seal head (2.2);
Described load load bar (3) stretches to pit shaft cylindrical shell (1) bottom through workpiece threaded pressure ring (2.8), Work piece sealing head (2.2) and internals seal head (2.1) successively, and by the load bar O-ring seal (3.1) being arranged on its outer wall, be connected with Work piece sealing head (2.2) inner wall sealing, described load load bar (3) bottom is used for installing tested workpiece (4).
2. compression packer test unit according to claim 1, it is characterized in that: described internals seal head (2.1) lower end is provided with thin wall casing (2.9), described thin wall casing (2.9) upper end outer wall coordinates with internals seal head (2.1) inner thread, described thin wall casing (2.9) lower end extends to pit shaft cylindrical shell (1) bottom, between described thin wall casing (2.9) upper end outer wall and internals seal head (2.1) inwall, is also provided with O RunddichtringO (2.10).
3. compression packer test unit according to claim 1, it is characterized in that: the top ring platform outer wall of described internals seal head (2.1) and the inner chamber ring-shaped step inwall junction of pit shaft cylindrical shell (1) are provided with plane of orientation (2.12), thereby can prevent that internals seal head (2.1) from twisting with respect to pit shaft cylindrical shell (1).
4. compression packer test unit according to claim 1, is characterized in that: on described load load bar (3), be arranged at intervals with a plurality of square torsion loading interfaces (3.2).
5. compression packer test unit according to claim 1, is characterized in that: described workpiece threaded pressure ring (2.8) and internals threaded pressure ring (2.6) top are provided with radially mounting hole (2.13).
6. compression packer test unit according to claim 1, is characterized in that: the size of O-ring seal in described internals (2.3) is greater than the size with internals lower seal (2.4), thereby is convenient to the mounting or dismounting of internals seal head (2.1).
7. compression packer test unit according to claim 1, it is characterized in that: on the outer wall of described load load bar (1), be arranged at intervals with multiple tracks load bar O-ring seal (3.1), thereby be convenient to it, at different sections, be connected with Work piece sealing head (2.2) inner wall sealing, increase the sealing effective length of load load bar (1) simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659115.7A CN103630349B (en) | 2013-12-09 | 2013-12-09 | Compression packer assay device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310659115.7A CN103630349B (en) | 2013-12-09 | 2013-12-09 | Compression packer assay device |
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| CN103630349A true CN103630349A (en) | 2014-03-12 |
| CN103630349B CN103630349B (en) | 2016-08-17 |
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180986A (en) * | 2014-09-22 | 2014-12-03 | 上海外高桥造船有限公司 | Load test tool for sleeve tensioner and testing device including same |
| CN104374559A (en) * | 2014-11-14 | 2015-02-25 | 中国石油天然气股份有限公司 | An experimental detection device for dynamic performance of downhole tools |
| CN104596753A (en) * | 2015-01-20 | 2015-05-06 | 中国石油天然气股份有限公司 | Thermal packer testing device and method |
| CN104865134A (en) * | 2015-06-16 | 2015-08-26 | 西南交通大学 | Novel injection agent type static sealing experimental device |
| CN107271304A (en) * | 2016-04-08 | 2017-10-20 | 中国石油化工股份有限公司 | Throttle sanding machine erosion test device and method |
| CN107448607A (en) * | 2017-08-30 | 2017-12-08 | 武汉海王机电工程技术公司 | A kind of sealing structure of downhole tool experimental rig |
| CN107489394A (en) * | 2017-08-15 | 2017-12-19 | 中国石油天然气股份有限公司 | A three-ellipse experimental device for open hole packers |
| CN112228040A (en) * | 2020-10-09 | 2021-01-15 | 中国石油天然气集团有限公司 | High temperature and high pressure test method for downhole tools, static seal head and auxiliary installation equipment |
| CN114441322A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Packer test device and method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104180986A (en) * | 2014-09-22 | 2014-12-03 | 上海外高桥造船有限公司 | Load test tool for sleeve tensioner and testing device including same |
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| CN104865134A (en) * | 2015-06-16 | 2015-08-26 | 西南交通大学 | Novel injection agent type static sealing experimental device |
| CN104865134B (en) * | 2015-06-16 | 2017-06-27 | 西南交通大学 | An injection type static sealing experimental device |
| CN107271304A (en) * | 2016-04-08 | 2017-10-20 | 中国石油化工股份有限公司 | Throttle sanding machine erosion test device and method |
| CN107271304B (en) * | 2016-04-08 | 2023-09-01 | 中国石油化工股份有限公司 | Erosion testing device and method for throttle sand blaster |
| CN107489394A (en) * | 2017-08-15 | 2017-12-19 | 中国石油天然气股份有限公司 | A three-ellipse experimental device for open hole packers |
| CN107448607A (en) * | 2017-08-30 | 2017-12-08 | 武汉海王机电工程技术公司 | A kind of sealing structure of downhole tool experimental rig |
| CN112228040A (en) * | 2020-10-09 | 2021-01-15 | 中国石油天然气集团有限公司 | High temperature and high pressure test method for downhole tools, static seal head and auxiliary installation equipment |
| CN114441322A (en) * | 2020-11-06 | 2022-05-06 | 中国石油化工股份有限公司 | Packer test device and method |
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|---|---|
| CN103630349B (en) | 2016-08-17 |
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