CN202181857U - Multifunctional safe joint - Google Patents
Multifunctional safe joint Download PDFInfo
- Publication number
- CN202181857U CN202181857U CN2011202541155U CN201120254115U CN202181857U CN 202181857 U CN202181857 U CN 202181857U CN 2011202541155 U CN2011202541155 U CN 2011202541155U CN 201120254115 U CN201120254115 U CN 201120254115U CN 202181857 U CN202181857 U CN 202181857U
- Authority
- CN
- China
- Prior art keywords
- joint
- main body
- brake piston
- outer end
- multifunctional safe
- 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 - Fee Related
Links
- 238000007789 sealing Methods 0.000 abstract description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 230000000087 stabilizing effect Effects 0.000 abstract 2
- 230000002159 abnormal effect Effects 0.000 abstract 1
- 239000003208 petroleum Substances 0.000 abstract 1
- 210000000056 organ Anatomy 0.000 description 8
- 238000012856 packing Methods 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 239000010959 steel Substances 0.000 description 5
- 238000007689 inspection Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
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Abstract
The utility model relates to a multifunctional safe joint, characterized by comprising a main body, an upper joint, a lower joint, a brake piston and a constant-pressure stabilizing nail, wherein the both ends of the main body are connected with the upper joint and the lower joint via threads respectively; an internal tube thread is disposed at the outer end of the upper joint, and an external tube thread is disposed at the outer end of the lower joint; the brake piston is disposed on the core part of the main body, and connected with the main body and the lower joint respectively; the constant-pressure stabilizing nail is disposed between the main body and the brake piston, and against the inner end of the lower joint; and an O-shaped sealing ring is disposed between the main body as well as the upper joint, the lower joint, and the brake piston respectively. Both of the internal tube thread at the outer end of the upper joint and the external tube thread at the outer end of the lower joint are 27/8 TBG petroleum tube threads. Compared with the prior art, the multifunctional safe joint disclosed by the utility model has the following advantages that: 1) the multifunctional safe joint is novel and reasonable in structure, flexible and reliable in action, as well as low in processing cost; 2) the multifunctional safe joint can be used together with the tube columns of many kinds of packers; and 3) the working timeliness is increased, the reasons can be rapidly found out when a water injection is abnormal, and the expense of well repair can be saved.
Description
Technical field
The utility model relates to the kit field of water injection well packer tubing string, particularly a kind of multifunctional safe joint.
Background technology
At present; The aboveground employed packer tubing string of oil-field flooding has branch column jecket post, card tube sealing post and card fistulae post; The model of its packer is made up of series such as Y341, K344, Y221, Y241 basically; No matter the tubing string of which kind of type is in the downhole production overlong time or because water quality is not up to standard, all can fouling in the down-hole, the problem that possibly cause operation next time to take out.Take out oil pipe and need repeatedly salvage back-off; Can drop into more expense, moreover, have on the tubing string of packer owing to receive the restriction of cost of production; Can not all drop into new oil pipe; Therefore seal, divide notes, card fistulae post just to be lowered under the situation of testing envelope appearance leakage at card, it is out of joint to be hard to tell oil pipe leakage or packing organ pipe string, and relevant foundation can not be provided for the formulation of next step measures to rectify and reform scheme.
Summary of the invention
The purpose of the utility model provides a kind of multifunctional safe joint, overcomes the deficiency of prior art, the packer tubing string is gone into the well after; Test the reason of to distinguish one from the other when leakage appears in envelope; Also can when next seal inspection, run into motionless packer tubing string, the oil pipe more than the packer all tripped out by this joint; Avoid firmly unfreezing to pull out curved scrapping to oil pipe, and be that later heavy repair task is saved fund and workload.
For solving the problems of the technologies described above, the technical scheme of the utility model is:
The multifunctional safe joint; Comprise that main body, top connection, lower contact, brake piston and level pressure surely follow closely, the main body two ends are connected through screw thread respectively with lower contact with top connection, and the top connection outer end is provided with Internal Pipe Thread; The lower contact outer end is provided with external pipe thread; Brake piston is located at main body heart portion and is connected with lower contact with main body respectively, and the steady nail of level pressure is located between main body and the brake piston and is offseted with lower contact the inner, is respectively equipped with O-ring seals between main body and top connection, lower contact, the brake piston.
Internal Pipe Thread on the said top connection outer end and the external pipe thread on the lower contact outer end are all 2
7/
8The TBG oil pipe thread.
Compared with prior art, the beneficial effect of the utility model is: 1) Structure novel reasonable, it is reliable to be active in one's movements, low processing cost.2) can with the supporting use of packer tubing string of multiple model, do not receive the restriction of instrument model.3) improve the operation timeliness, can seal in the back at the packer tubing string and occur ascertaining the reason rapidly when unusual, accurately make the measure of following step, can also be when next seal inspection can not pulled out tubing string, the protection oil pipe has been practiced thrift workover cost.
Description of drawings
Fig. 1 is the utility model example structure sketch map.
Among the figure: 1-main body 2-top connection 3-lower contact 4-brake piston 5-level pressure is surely followed closely 6-Internal Pipe Thread 7-external pipe thread 8-O shape sealing ring
The specific embodiment
Be described further below in conjunction with the specific embodiment of accompanying drawing the utility model:
See Fig. 1; It is the utility model multifunctional safe joint example structure sketch map; Comprise the steady nail 5 of main body 1, top connection 2, lower contact 3, brake piston 4 and level pressure, main body 1 two ends are connected through screw thread respectively with lower contact 3 with top connection 2, and top connection 2 outer ends are provided with Internal Pipe Thread 6; Lower contact 3 outer ends are provided with external pipe thread 7; Brake piston 4 is located at main body 1 heart portion and is connected with lower contact 3 with main body 1 respectively, and level pressure is surely followed closely 5 and is located between main body 1 and the brake piston 4 and offsets with lower contact 3 the inners, and it is sizes according to the actual bets water pressure that level pressure surely follows closely 5; Before going into the well, adjust, be respectively equipped with O-ring seals 8 between main body 1 and top connection 2, lower contact 3, the brake piston 4.Brake piston 4 surfaces have been carried out correct grinding and chromium plating and have been handled to guarantee for a long time still not influence its performance in underground work.
During use, after finishing packing organ pipe string down, this safety joint and packing organ pipe polyphone are connect in the lower going-into-well of back, press under the design to the precalculated position.When suppressing checking sealing of packer pipe string, if satisfy the production needs, safety joint can be put into production with packing organ pipe string, pulls out when motionless subsequent use as next seal inspection; When suppressing checking sealing of packer pipe string, when its wastage can not reach the waterflooding requirement standard, drop into steel ball to safety joint heart portion; Steel ball size is greater than the brake piston endoporus, after steel ball sits on the brake piston, according to the production pressure before being lowered to; Suppress from well head; Pressure is less than the shear pressure of the steady nail of level pressure, but the leakage situation of checking sealing of packer top oil pipe just, thus can judge the problem of oil pipe or the problem of packing organ pipe string; Be the replacing oil pipe that oil pipe leaks, packing organ pipe string has problem to change packing organ pipe string.
After produce finishing, if when needing to bore plug redistribution operation, packing organ pipe string is as repeatedly pulling out motionless unfreezing when invalid; Steel ball is dropped in the safety joint heart portion, and steel ball is suppressed from well head after sitting on the brake piston; Pressure is cut off level pressure and is surely followed closely greater than the shear pressure of the steady nail of level pressure, is just changeing oil pipe then; Trip out safety joint top tubing string,, salvage lower packer tubing string cost saving and time for later this well of overhaul.
Claims (2)
1. multifunctional safe joint; It is characterized in that; Comprise that main body, top connection, lower contact, brake piston and level pressure surely follow closely, the main body two ends are connected through screw thread respectively with lower contact with top connection, and the top connection outer end is provided with Internal Pipe Thread; The lower contact outer end is provided with external pipe thread; Brake piston is located at main body heart portion and is connected with lower contact with main body respectively, and the steady nail of level pressure is located between main body and the brake piston and is offseted with lower contact the inner, is respectively equipped with O-ring seals between main body and top connection, lower contact, the brake piston.
2. multifunctional safe joint according to claim 1 is characterized in that, Internal Pipe Thread on the said top connection outer end and the external pipe thread on the lower contact outer end are all 2
7/
8The TBG oil pipe thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202541155U CN202181857U (en) | 2011-07-18 | 2011-07-18 | Multifunctional safe joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202541155U CN202181857U (en) | 2011-07-18 | 2011-07-18 | Multifunctional safe joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202181857U true CN202181857U (en) | 2012-04-04 |
Family
ID=46174899
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202541155U Expired - Fee Related CN202181857U (en) | 2011-07-18 | 2011-07-18 | Multifunctional safe joint |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202181857U (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266875A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing operation method of multistage hydraulic jet staged fracturing tubular column |
| CN103266876A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing working method of multilevel hydraulic spraying segmentation fracturing tubular column |
| CN103266873A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Connecting structure of multilevel hydraulic spraying segmentation fracturing tubular column |
| CN107558933A (en) * | 2017-09-15 | 2018-01-09 | 刘玉友 | Safety joint under a kind of fluffing of moulding sand formula oil well |
| CN107642341A (en) * | 2017-09-15 | 2018-01-30 | 刘玉友 | Use method of loose sand type petroleum underground safety joint |
-
2011
- 2011-07-18 CN CN2011202541155U patent/CN202181857U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103266875A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing operation method of multistage hydraulic jet staged fracturing tubular column |
| CN103266876A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Fracturing working method of multilevel hydraulic spraying segmentation fracturing tubular column |
| CN103266873A (en) * | 2013-02-28 | 2013-08-28 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Connecting structure of multilevel hydraulic spraying segmentation fracturing tubular column |
| CN103266876B (en) * | 2013-02-28 | 2015-11-04 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | Multi-stage water power sprays the fracture job method of fracturing strings |
| CN103266875B (en) * | 2013-02-28 | 2015-12-02 | 中国石油集团川庆钻探工程有限公司长庆井下技术作业公司 | A kind of multi-stage water power sprays the fracture job method of fracturing strings |
| CN107558933A (en) * | 2017-09-15 | 2018-01-09 | 刘玉友 | Safety joint under a kind of fluffing of moulding sand formula oil well |
| CN107642341A (en) * | 2017-09-15 | 2018-01-30 | 刘玉友 | Use method of loose sand type petroleum underground safety joint |
| CN109779538A (en) * | 2017-09-15 | 2019-05-21 | 刘玉友 | Apparatus for work under a kind of oil well |
| CN107558933B (en) * | 2017-09-15 | 2019-06-21 | 东营市科创石油装备有限公司 | A loose sand type oil well safety joint |
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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 |
Granted publication date: 20120404 Termination date: 20180718 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |