CN201606047U - Energy-absorbing device used for testing combination operation of composite perforation and full-aperture stratum - Google Patents
Energy-absorbing device used for testing combination operation of composite perforation and full-aperture stratum Download PDFInfo
- Publication number
- CN201606047U CN201606047U CN2010203025775U CN201020302577U CN201606047U CN 201606047 U CN201606047 U CN 201606047U CN 2010203025775 U CN2010203025775 U CN 2010203025775U CN 201020302577 U CN201020302577 U CN 201020302577U CN 201606047 U CN201606047 U CN 201606047U
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- spool
- absorbing device
- valve body
- energy
- valve core
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Abstract
The utility model belongs to the field of petroleum exploration and provides an energy-absorbing device used for testing combination operation of composite perforation and full-aperture stratum. The energy-absorbing device can quickly filter the high pressure generated after explosion and achieve the aims of buffering and damping. The energy-absorbing device comprises a cylindrical valve body connected with an upper joint, and the cylindrical valve body is internally sheathed with a plurality of valve cores; the adjacent valve cores are connected in series by a middle connecting part; the valve core is internally hollow; the head part of the valve core and a shear sleeve are connected into a whole by a radial pin; the shear sleeve is arranged on the internal step of the valve body; the side wall of the valve core is provided with a plurality of internal buffering holes; the side wall of the cylindrical valve body is provided with a plurality of external buffering holes; and the external buffering holes are arranged below the internal buffering holes. After perforation, the generated high pressure acts on the valve core, the pin is sheared and broken, the valve core moves downwards so that the internal buffering holes are communicated with the external buffering holes, and the high-pressure mediums formed after explosion can quickly enter the internal chamber of the valve core, thus playing an energy-absorbing and amortizing filter function.
Description
Technical field
The utility model belongs to petroleum exploration field, particularly a kind of energy absorbing device that is used for composite gun perforation and all-pass footpath formation testing connection work.
Background technology
In oil exploitation, composite gun perforation and testing combination operation are meant perforating system and tester one are removed in the well, do not carry tubing string and directly carry out formation testing behind composite gun perforation.Because the composite gun perforation instant of detonation can produce high pressure and vibrations, general formation tester is difficult to bear so big vibration limits power in composite gun perforation and formation testing connection work.So, in composite gun perforation and formation testing connection work,, must implement energy-absorbing buffering to high pressure and vibrations that instant of detonation produces in order to protect the tester operate as normal.Mechanical shock and play that existing buffer is primarily aimed at tubing string weaken, but this series products can't effectively absorb the high pressure in the pit shaft.
Summary of the invention
Problem to be solved in the utility model is: a kind of energy absorbing device that is applicable in composite gun perforation and the all-pass footpath formation testing connection work is provided, and it can filter the high pressure that the blast back produces rapidly, reaches the purpose of buffering, damping.
The technical scheme that addresses the above problem is: the composite gun perforation that is used for that is provided comprises the tubular valve body that is connected with top connection with the energy absorbing device that formation testing connection in all-pass footpath is done, be set with a plurality of spools in the tubular valve body, be connected in series by intermediate connector between the adjacent spool, said valve core inside hollow, the spool head is by radially pin and shear sleeve connect as one, shear sleeve is seated on the interior step of valve body, the spool sidewall has a plurality of interior cushion holes, the cylindrical valve body sidewall has a plurality of outer cushion holes, and outer cushion hole is positioned at the cushion hole below.
Above-mentioned intermediate connector preferably adopts piston cylinder, and the upper end of this piston cylinder contacts with the spool of top bottom, and the lower end of piston cylinder contacts with the spool top of below.This structure is the simplest, also is convenient to install and regulate.
In above-mentioned a plurality of spools, the head of all the other spools except that the spool of the top can offer the flowing hole that is communicated with valve core cavity, with regard to making the inner chamber of each spool be communicated with, makes filter effect better like this.
The top connection of this energy absorption plant is connected with the perforating gun lower end during work, behind the interior preposition of well, ignite detonating fuse down, then ignite perforating bullet and light compound medicine, the part energy that blast produces is delivered to first order spool topmost downwards, cut off the radially pin between spool head and shear sleeve, it is descending to promote first order spool, can promote the next stage spool by intermediate connector and move downward when first order spool is descending, and promoting more according to this again, the spool of next stage moves downward.Each spool moves downward, the interior cushion hole of each spool sidewall is communicated with the outer cushion hole of body wall, because the outer cushion hole of body wall is communicated with the oil well casing annular space, so the high-pressure medium that is formed by blast in the oil well casing annular space can enter valve core cavity rapidly by cushion hole in outer cushion hole of each valve body and the spool, thereby pressure is reduced, reach the filter effect of energy-absorbing, buffering and damping.
The utility model utilizes the spool of a plurality of hollows to absorb the energy that blast produces simultaneously, increased the circulation area of cushion hole, not only simple in structure, and step-down is rapid, good wave filtering effect, and can increase and decrease the number of valve body and spool by joint easily, the length of promptly regulating energy absorbing device is to adapt to the needs of different occasions.
Description of drawings
Fig. 1 is the structure chart of the utility model first embodiment.
Fig. 2 is the structure chart of first order spool among Fig. 1.
Fig. 3 is the structure chart of the utility model most preferred embodiment.
Fig. 4 is the structure chart of second level spool among Fig. 3.
The specific embodiment
Fig. 1 and Fig. 2 have provided first embodiment of the utility model.This energy absorption plant mainly comprises top connection 1, tubular valve body 3 and the transition joint 5 that connects successively, all adopts each other to be threaded, and is provided with sealing ring, is set with spool in the tubular valve body.Several tubular valve body 3 usefulness transition joints 5 can be serially connected as required, this example is that three tubular valve bodies are serially connected, and the lower end of nethermost tubular valve body connects tail stifled 8.This example is equipped with two spools, that is: first order spool 2 and second level spool 7 are contained in the valve body, and the lower end of first order spool 2 is connected with second level spool 7 by piston cylinder 6.Spool 2 inner hollow, the head of spool 2 are by shutoff, and are set with shear sleeve 9, link together with pin 10 radially between the two.The inner chamber of valve body 3 has step in, and shear sleeve 9 is seated on this interior step, with whole spool 2 suspentions thereon.The Lower Half diameter of spool 2 is less, and the first half bigger with its diameter forms ladder.Spool 2 sidewalls have four interior cushion holes 11, valve body 3 sidewalls also have four outer cushion holes 4 that are communicated with the annular space of oil well casing, outer cushion hole 4 is positioned at the below of cushion hole 11, and stagger mutually, so when spool did not separate with shear sleeve, the inner chamber of the annular space of sleeve pipe and spool 2 was to isolate mutually.Behind the perforation, the high pressure that produces acts on the spool head, pin 10 is cut off, spool 2 separates with shear sleeve 9, and it is descending to promote spool, till end in contact in spool ladder and the transition joint, at this moment, cushion hole 11 is communicated with the outer cushion hole 4 of valve body in the spool, and promptly the annular space of sleeve pipe is communicated with the inner chamber of spool 2, thereby can play the filter action of energy-absorbing, buffering and damping to the blast of perforation moment generation.The structure of spool 7 is identical with spool 2, and it is descending to promote spools 7 by piston bush 6 when spool 2 is descending, and the filtering of its energy-absorbing, buffering and damping is the same with spool 2.
Fig. 3, Fig. 4 have provided the utility model illustrated embodiments, and its basic structure is identical with first embodiment, and its distinctive points is: spool 7a head has the flowing hole 12 that is communicated with valve core cavity in the second level, makes first and second grade spool realize being communicated with.
In order to make the spool can be descending quickly, can make spool first half diameter greater than the Lower Half diameter, and earial drainage through hole 13 (referring to Fig. 3, Fig. 4) is set in the spool Lower Half.
Claims (5)
1. be used for the energy absorbing device that formation testing connection in composite gun perforation and all-pass footpath is done, it is characterized in that comprising the tubular valve body (3) that is connected with top connection (1), be set with a plurality of spools (2 in the tubular valve body (3), 7,7a), be connected in series by intermediate connector between the adjacent spool, said valve core inside hollow, the spool head is by radially pin (10) and shear sleeve (9) connect as one, shear sleeve (9) is seated on the interior step of valve body (3), the spool sidewall has a plurality of interior cushion holes (11), the cylindrical valve body sidewall has a plurality of outer cushion holes (4), and outer cushion hole (4) is positioned at cushion hole (11) below.
2. energy absorbing device according to claim 1 is characterized in that intermediate connector is piston cylinder (6), and the upper end of this piston cylinder (6) contacts with the spool of top bottom, and the lower end of piston cylinder (6) contacts with the spool top of below.
3. energy absorbing device according to claim 1 and 2 is characterized in that the head of all the other spools except that the spool of the top offers the flowing hole (12) that is communicated with valve core cavity in described a plurality of spools (2,7,7a).
4. energy absorbing device according to claim 1 and 2 is characterized in that spool first half diameter greater than the Lower Half diameter, and in the spool Lower Half earial drainage through hole (13) is set.
5. energy absorbing device according to claim 3 is characterized in that spool first half diameter greater than the Lower Half diameter, and in the spool Lower Half earial drainage through hole (13) is set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203025775U CN201606047U (en) | 2010-02-08 | 2010-02-08 | Energy-absorbing device used for testing combination operation of composite perforation and full-aperture stratum |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010203025775U CN201606047U (en) | 2010-02-08 | 2010-02-08 | Energy-absorbing device used for testing combination operation of composite perforation and full-aperture stratum |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201606047U true CN201606047U (en) | 2010-10-13 |
Family
ID=42950753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010203025775U Expired - Lifetime CN201606047U (en) | 2010-02-08 | 2010-02-08 | Energy-absorbing device used for testing combination operation of composite perforation and full-aperture stratum |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201606047U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014353A (en) * | 2016-05-20 | 2016-10-12 | 大庆华翰邦石油装备制造有限公司 | Energy-absorption plug-removal perforation device |
| CN108825181A (en) * | 2018-08-13 | 2018-11-16 | 长江大学 | A kind of TCP combined well testing axial multistage damper |
-
2010
- 2010-02-08 CN CN2010203025775U patent/CN201606047U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014353A (en) * | 2016-05-20 | 2016-10-12 | 大庆华翰邦石油装备制造有限公司 | Energy-absorption plug-removal perforation device |
| CN108825181A (en) * | 2018-08-13 | 2018-11-16 | 长江大学 | A kind of TCP combined well testing axial multistage damper |
| CN108825181B (en) * | 2018-08-13 | 2023-07-25 | 长江大学 | Perforation test combined axial multistage shock absorber |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20101013 |