CN201802348U - Removable internal oil tube stopper - Google Patents
Removable internal oil tube stopper Download PDFInfo
- Publication number
- CN201802348U CN201802348U CN2010205236785U CN201020523678U CN201802348U CN 201802348 U CN201802348 U CN 201802348U CN 2010205236785 U CN2010205236785 U CN 2010205236785U CN 201020523678 U CN201020523678 U CN 201020523678U CN 201802348 U CN201802348 U CN 201802348U
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- CN
- China
- Prior art keywords
- hydraulic cylinder
- center
- spring
- oil pipe
- slip sleeve
- 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
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- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The utility model belongs to the field of mechanical manufacture, and particularly relates to a removable internal oil tube stopper for oilfield underground operations, which comprises a slip (10), a slip sleeve (8), a cone (11), a sealed rubber barrel (12), a lower connector (13), a spring (3), a spring pressure cap (1) and a central rod (6). The removable internal oil tube stopper is characterized by further comprising a hydraulic cylinder (2), a piston (4) and a one-way valve (15). The removable internal oil tube stopper seals an oil tube by the aid of a simple hydraulic system, is convenient in operation, increases operating efficiency greatly, and further can realize recovery and reuse, thereby not only reducing operational cost, but also facilitating popularization and application.
Description
Technical field
The utility model belongs to mechanical manufacturing field, blanking plug in the salvagable oil pipe that particularly a kind of oilfield downhole operation is used.
Background technology
Oil well needs often to rise lower tubular column, overflows in well for preventing crude oil, needs interim shutoff oil pipe sometimes.Snubbing serving generally uses the small-sized bridging plug as the oil pipe calker, but this method for blocking need be equipped with special minor diameter tubing when being lowered to bridging plug, and bridging plug can't reclaim after being lowered to, and bores and removes trouble, has additionally increased operating cost.In addition, a lot of oil fields are also adopted and can not be dragged for the formula tubing plug, and this blanking plug shutoff oil pipe is convenient, in case but shutoff work finish, oil pipe must be tripped out and could take out blanking plug, complicated operation is unfavorable for promotion and application very much.
Summary of the invention
The purpose of this utility model is to overcome above-mentioned the deficiencies in the prior art, and blanking plug in a kind of salvagable oil pipe is provided, and it can be provided convenience for interim shutoff oil pipe, and can reclaim, and uses repeatedly.
The utility model is by the following technical solutions:
Blanking plug in the salvagable oil pipe comprises slips, slip sleeve, cone, cartridge, lower union joint, spring, spring pressure cap, center-pole, and center-pole passes via slip sleeve, cone, cartridge, lower union joint center, and with the lower union joint threaded engagement; Have shaft shoulder structure in the middle of the center-pole, the restriction cone moves upward; Three slips that are mutually 120 degree angles are housed on the slip sleeve; It is characterized in that it also comprises hydraulic cylinder, piston, one way valve; Hydraulic cylinder upper end and spring pressure cap threaded engagement, lower end and slip sleeve threaded engagement; Spring is equipped with in hydraulic cylinder inside, and spring is in compressive state, and piston is pressed on the hydraulic cylinder inner face; Top land and hydraulic oil pipe threaded engagement, bottom and center-pole threaded engagement; The fluid pressure line upper end connects one way valve, in order to control hydraulic oil one-way flow.
Blanking plug in the described salvagable oil pipe is characterized in that adopting pin to be connected between slips and the slip sleeve.
Blanking plug in the described salvagable oil pipe is characterized in that hydraulic cylinder inside has groove structure, and sealing ring and lower seal is housed.
Effect of the present utility model is: blanking plug adopts simple hydraulic system to realize the shutoff work of oil pipe in the salvagable oil pipe, connects one way valve on the hydraulic oil pipe, and the one-way flow of control hydraulic oil keeps the hyperbaric environment in the blanking plug.This blanking plug only needs simple action to get final product the shutoff oil pipe, and is easy to operate, improved operating efficiency greatly.And blanking plug can also realize reclaiming repeatedly and use, and not only reduced operating cost, also is beneficial to and applies.
Description of drawings
Fig. 1 is a structural representation of the present utility model.
Fig. 2 is an A place enlarged drawing among Fig. 1
Among the figure, spring pressure cap 1, hydraulic cylinder 2, spring 3, piston 4, last sealing ring 5, center-pole 6, lower seal 7, slip sleeve 8, pin 9, slips 10, cone 11, cartridge 12, lower union joint 13, hydraulic oil pipe 14, one way valve 15.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described in detail.
The utility model comprises spring pressure cap 1, hydraulic cylinder 2, spring 3, piston 4, goes up sealing ring 5, center-pole 6, lower seal 7, slip sleeve 8, pin 9, slips 10, cone 11, cartridge 12, lower union joint 13, hydraulic oil pipe 14, one way valve 15.The spring pressure cap 1 of this device and hydraulic cylinder 2 threaded engagement, spring 3 is in compressive state, and the piston 4 of lower end is pressed on hydraulic cylinder 2 inner faces, and place, piston 4 axle center has the hole, and lower end and center-pole 6 threaded engagement also have aperture on the center-pole 6.Assemble after the center-pole 6, just formed a variable enclosure space between last sealing ring 5 and the lower seal 7, hydraulic oil in the hydraulic oil pipe 14 can enter the space between sealing ring 5 and the lower seal 7 by the aperture on piston 4 and the center-pole 6, along with the increase of hydraulic fluid pressure, piston 4 will move upward and compress spring 3.Hydraulic oil pipe 14 upper ends connect one way valve 15, are used for controlling the one-way flow of hydraulic oil.
Hydraulic cylinder 2 and slip sleeve 8 threaded engagement, slips 10 is connected by pin 9 with slip sleeve 8.Cone 11, cartridge 12 are slidingly matched from center-pole 6 lower ends and pack into, cartridge 12 and center-pole 6 interference fit, and center-pole 6 is provided with the shaft shoulder and limits cone 11 and move upward.Lower union joint 13 and center-pole 3 threaded engagement.
During actual the use, this blanking plug is delivered by hydraulic oil pipe 14.After being shipped to assigned address, the primer fluid pressing system, when hydraulic fluid pressure arrived one way valve 15 opening pressures, one way valve 15 was opened, and hydraulic oil can enter the seal cavity between sealing ring 5 and the lower seal 7 through the aperture on piston 4 and the center-pole 6.Along with the increase of hydraulic fluid pressure, piston 4 will move upward and compress spring 3 with respect to hydraulic cylinder 2.Because piston 4 and center-pole 6 threaded engagement, and hydraulic cylinder 2 is threaded with slip sleeve 8, thereby center-pole 6 moves upward with respect to slip sleeve 8, cone 11 on the center-pole 6 contacts with slips 10 in motion process gradually, under the profile effect of cone 11, slips 10 tightens tube inner walls to the expansion of tube inner wall direction until slips 10.This moment hydraulic cylinder 2 with slips 10 locking positions, increase along with hydraulic fluid pressure, piston 4 continues to drive center-pole 3 and moves upward, and active force increases gradually between slips 10 and the cone 11, and orders about cone 11 compression seal packing elements 12 until cartridge 12 complete shutoff oil pipes.After shutoff work is finished, the hydraulic system off-load, blanking plug inside remains higher pressure under the effect of one way valve 15, keeps the operate as normal of blanking plug.
When playing blanking plug, only need the Remote Open one way valve, the blanking plug internal pressure reduces rapidly, removes plugging effect under the effect of spring 3 restoring forces, promptly recoverable blanking plug.
Claims (3)
1. blanking plug in the salvagable oil pipe, comprise slips (10), slip sleeve (8), cone (11), cartridge (12), lower union joint (13), spring (3), spring pressure cap (1), center-pole (6), center-pole (6) passes via slip sleeve (8), cone (11), cartridge (12), lower union joint (13) center, and with lower union joint (13) threaded engagement; Three slips (10) that are mutually 120 degree angles are housed on the slip sleeve (8); It is characterized in that it also comprises hydraulic cylinder (2), piston (4), one way valve (15); Hydraulic cylinder (2) upper end and spring pressure cap (1) threaded engagement, lower end and slip sleeve (8) threaded engagement; Spring (3) is equipped with in hydraulic cylinder (2) inside, and spring (3) is in compressive state, and piston (4) is pressed on hydraulic cylinder (2) inner face; Piston (4) top and hydraulic oil pipe (14) threaded engagement, bottom and center-pole (6) threaded engagement; Fluid pressure line (14) upper end connects one way valve (15).
2. blanking plug in the salvagable oil pipe according to claim 1 is characterized in that: adopt between described slips (10) and the slip sleeve (8) and sell (9) and be connected.
3. blanking plug in the salvagable oil pipe according to claim 1, it is characterized in that: described hydraulic cylinder (2) inside has groove structure, and sealing ring (5) and lower seal (7) are housed.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010205236785U CN201802348U (en) | 2010-09-09 | 2010-09-09 | Removable internal oil tube stopper |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN2010205236785U CN201802348U (en) | 2010-09-09 | 2010-09-09 | Removable internal oil tube stopper |
Publications (1)
Publication Number | Publication Date |
---|---|
CN201802348U true CN201802348U (en) | 2011-04-20 |
Family
ID=43871853
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN2010205236785U Expired - Fee Related CN201802348U (en) | 2010-09-09 | 2010-09-09 | Removable internal oil tube stopper |
Country Status (1)
Country | Link |
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CN (1) | CN201802348U (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111456670A (en) * | 2020-05-26 | 2020-07-28 | 西安宇星石油机械新技术开发有限公司 | Blocking, clamping and connecting device in hydraulic annular optical casing head |
CN111997548A (en) * | 2020-09-09 | 2020-11-27 | 中国石油天然气集团有限公司 | Sand remover filter screen takes out instrument |
CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
-
2010
- 2010-09-09 CN CN2010205236785U patent/CN201802348U/en not_active Expired - Fee Related
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111456670A (en) * | 2020-05-26 | 2020-07-28 | 西安宇星石油机械新技术开发有限公司 | Blocking, clamping and connecting device in hydraulic annular optical casing head |
CN111997548A (en) * | 2020-09-09 | 2020-11-27 | 中国石油天然气集团有限公司 | Sand remover filter screen takes out instrument |
CN114075939A (en) * | 2022-01-07 | 2022-02-22 | 胜利油田北方实业集团有限责任公司 | Oil pipe plug convenient to operation |
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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 | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110420 Termination date: 20170909 |