CN204212751U - Reusable dynamic negative pressure perforation pressure reducing device - Google Patents
Reusable dynamic negative pressure perforation pressure reducing device Download PDFInfo
- Publication number
- CN204212751U CN204212751U CN201420609597.5U CN201420609597U CN204212751U CN 204212751 U CN204212751 U CN 204212751U CN 201420609597 U CN201420609597 U CN 201420609597U CN 204212751 U CN204212751 U CN 204212751U
- Authority
- CN
- China
- Prior art keywords
- plunger
- perforation
- ring
- ring set
- joint
- Prior art date
- 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 - Lifetime
Links
- 238000007789 sealing Methods 0.000 claims description 11
- 229910052755 nonmetal Inorganic materials 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 abstract description 4
- 239000003129 oil well Substances 0.000 abstract description 3
- 238000010008 shearing Methods 0.000 abstract 2
- 238000010276 construction Methods 0.000 abstract 1
- 238000009434 installation Methods 0.000 abstract 1
- 210000001503 joint Anatomy 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 241000406668 Loxodonta cyclotis Species 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Working Measures On Existing Buildindgs (AREA)
Abstract
The utility model relates to a repeatedly usable moves negative pressure perforation pressure relief device. The problems of troublesome installation and inconvenient construction of the oil well perforation pressure reducing device are mainly solved. The shearing pin is sheared by the pressure generated by the perforating bullet of the perforating gun, the opening of the plunger is in butt joint communication with the opening of the ring sleeve, the pressure in the shaft is removed, and the next perforation can be carried out only by pulling the plunger to seal the position and installing the shearing pin for fixing after the work is finished. The utility model discloses effectual reduction manufacturing cost, alleviateed workman intensity of labour, improved production efficiency.
Description
Technical field
The utility model relates to oil field perforation technology, is applied in oil field prospecting, exploitation, perforation completion process, specifically a kind of reusable dynamic underbalance perforating decompressor.
Background technology
The perforator that current domestic each elephant uses is single perforator mostly, Daqing oil field has started a large amount of use and can carry out alleviating annular pressure after perforation at once, the backflow of target zone pressure reaches volume increase, the dynamic underbalance perforating device of augmented injection carries out composite gun perforation completion, but this device can not be reused, unit must be transported after each use back carry out maintaining, keeping in repair, the each perforation of a bite well all needs to prepare a set of dynamic negative pressure device and goes to perforation job site to carry out assembling, constructing, what have just may scrap, so very loaded down with trivial details, also waste very much.
Utility model content
For solving Problems existing in background technology, the utility model proposes a kind of reusable dynamic underbalance perforating decompressor, making in perforation work, do not need each perforation to prepare separately dynamic negative pressure decompressor, reusable.
The technical scheme that the utility model adopts is: have plunger overcoat to have ring set in centre forward's joint, centre forward's joint, adapter sleeve A, ring seat, adapter sleeve B, adapter sleeve C, lower contact is respectively from top to bottom between ring set and plunger, wherein ring seat and adapter sleeve B's is separated, its part disconnected is provided with ring set mouth at the correspondence position of ring set, plunger is provided with plunger ports with ring set mouth relevant position, plunger is fixed by shear pin simultaneously; Be provided with tapered pad between centre forward's joint and plunger, ring set upper and lower two ends interface position is all provided with rubber seal, and ring seat is provided with nonmetal joint ring, pin permanent position is provided with sealing mat.
The beneficial effects of the utility model are: the static seal device of original sealing ring sealing is made into sealing system, the employing oil well pump mode with joint ring and sealing mat composition, them are made to become the reusable entirety of energy, reduce oil well production cost, alleviate labor strength simultaneously, improve production efficiency.
Accompanying drawing explanation
Fig. 1 is the utility model organigram.
In figure, 1-top connection, 2-centre forward's joint, 3-tapered pad, 4-rubber seal, 5-adapter sleeve A, the nonmetal joint ring of 6-, 7-ring seat, 8-hex screw, 9-plunger, 10-adapter sleeve B, 11-ring set, 12-sealing mat, 13-shear pin, 14-adapter sleeve, 15-cushion pad, 16-lower contact.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described further.
As shown in Figure 1, a kind of reusable dynamic underbalance perforating decompressor, perforating gun bottom is connected to by top connection 1, plunger 9 overcoat is had to have ring set 11 in centre forward's joint 2, centre forward's joint 2 is respectively from top to bottom between ring set 11 and plunger 9, adapter sleeve A5, ring seat 7, adapter sleeve B10, adapter sleeve C14, lower contact 16, ring seat 7 is fixed by hex screw 6, wherein ring seat 7 and adapter sleeve B10's is separated, its part disconnected is provided with ring set mouth at the correspondence position of ring set 11, plunger 9 is provided with plunger ports with ring set mouth relevant position simultaneously, plunger 2 is fixed by shear pin 13, tapered pad 3 is provided with between centre forward's joint 2 and plunger 9, ring set about 11 two ends interface position is all provided with rubber seal 4, ring seat 7 is provided with nonmetal joint ring 6, shear pin 13 permanent position is provided with sealing mat 12, the sealing system of tapered pad 3, rubber seal 4, nonmetal joint ring 6, plunger 9, sealing mat 12 composition prevents liquid in well to enter inside perforating gun, ensure that the sealingly secure of lower well tool, reliable.
Concrete, shear pin 13 is cut off by the pressure that behind perforation location, some sound perforating bullet produces in the work of going into the well, plunger 9 is moved down into bottom, cushion pad 15 in lower contact 16 alleviates the downward power of plunger 9, prevent plunger from damaging, plunger 9 is fixed on the position that plunger ports and ring set mouth connect simultaneously, its UNICOM is laid down wellbore pressure, reach after penetrating and return liquid volume increase, the object of synergy, annulus fluid enters in the dry practice of pressure relief device bottom, reduce annular pressure, reach the ability of withdrawing fluid after perforation, strengthen perforating effect, after perforation, well head got back to by perforating gun, plunger 9 is retracted sealing station and loads onto shear pin 13, carry out next perforation again.
Claims (2)
1. a reusable dynamic underbalance perforating decompressor, comprise centre forward's joint (2), plunger (9), ring set (11), it is characterized in that: in centre forward's joint (2), have plunger (9) overcoat to have ring set (11), centre forward's joint (2) is respectively from top to bottom between ring set (11) and plunger (9), adapter sleeve A(5), ring seat (7), adapter sleeve B(10), adapter sleeve C (14), lower contact (16), wherein ring seat (7) and adapter sleeve B(10) separated, its part disconnected is provided with ring set mouth at the correspondence position of ring set (11), on plunger (9) and ring set mouth relevant position is provided with plunger ports simultaneously, plunger (2) is fixed by shear pin (13).
2. reusable dynamic underbalance perforating decompressor according to claim 1, it is characterized in that: between centre forward's joint (2) and plunger (9), be provided with tapered pad (3), ring set (11) up and down two ends interface position is all provided with rubber seal (4), ring seat (7) is provided with nonmetal joint ring (6), shear pin (13) permanent position is provided with sealing mat (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609597.5U CN204212751U (en) | 2014-10-21 | 2014-10-21 | Reusable dynamic negative pressure perforation pressure reducing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420609597.5U CN204212751U (en) | 2014-10-21 | 2014-10-21 | Reusable dynamic negative pressure perforation pressure reducing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204212751U true CN204212751U (en) | 2015-03-18 |
Family
ID=52981432
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420609597.5U Expired - Lifetime CN204212751U (en) | 2014-10-21 | 2014-10-21 | Reusable dynamic negative pressure perforation pressure reducing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204212751U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939423A (en) * | 2019-10-09 | 2020-03-31 | 大港油田集团有限责任公司 | Experimental device for withstand voltage visual simulation self-supporting fracturing fluid flow law |
| CN113550723A (en) * | 2020-04-23 | 2021-10-26 | 中国石油天然气股份有限公司 | Pressure relief device and perforating gun |
| CN117307110A (en) * | 2023-12-01 | 2023-12-29 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
| CN117328841A (en) * | 2023-12-01 | 2024-01-02 | 大庆金祥寓科技有限公司 | Quick connection environment-friendly negative pressure gun |
-
2014
- 2014-10-21 CN CN201420609597.5U patent/CN204212751U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110939423A (en) * | 2019-10-09 | 2020-03-31 | 大港油田集团有限责任公司 | Experimental device for withstand voltage visual simulation self-supporting fracturing fluid flow law |
| CN113550723A (en) * | 2020-04-23 | 2021-10-26 | 中国石油天然气股份有限公司 | Pressure relief device and perforating gun |
| CN113550723B (en) * | 2020-04-23 | 2023-12-22 | 中国石油天然气股份有限公司 | Pressure relief device and perforating gun |
| CN117307110A (en) * | 2023-12-01 | 2023-12-29 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
| CN117328841A (en) * | 2023-12-01 | 2024-01-02 | 大庆金祥寓科技有限公司 | Quick connection environment-friendly negative pressure gun |
| CN117328841B (en) * | 2023-12-01 | 2024-02-13 | 大庆金祥寓科技有限公司 | Quick connection environment-friendly negative pressure gun |
| CN117307110B (en) * | 2023-12-01 | 2024-02-27 | 大庆金祥寓科技有限公司 | Reusable slideway non-return closing type environment-friendly dynamic negative pressure gun tail |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |