CN201826805U - Tubing plug for oil and gas field - Google Patents
Tubing plug for oil and gas field Download PDFInfo
- Publication number
- CN201826805U CN201826805U CN 201020565204 CN201020565204U CN201826805U CN 201826805 U CN201826805 U CN 201826805U CN 201020565204 CN201020565204 CN 201020565204 CN 201020565204 U CN201020565204 U CN 201020565204U CN 201826805 U CN201826805 U CN 201826805U
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- plug
- oil
- balance
- locking block
- gas field
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Abstract
The utility model relates to a tubing plug for an oil and gas field, belonging to the technical field of well repair of oil production project in the oil field, and comprising a salvage balance rod, a locking block support, a plug connector, a locking block, a balance tube, a sealing rubber cup, a rubber cup support, a plug sealing main body and a plug, wherein the plug connector is in threaded connection with the plug sealing main body, the middle of the plug connector is provided with a boss, the locking block support is sequentially connected with the balance tube and the plug through a thread, the locking block is arranged in the through hole of the middle of the locking block support, the locking block is clamped between the boss of the middle of the plug connector and the upper part of the plug sealing main body, the outer tube wall of the balance tube at the upper part of the plug is sheathed with the rubber cup support and the sealing rubber cup, the position of the balance tube, which corresponds to the rubber cup support, is provided with the balance hole, the salvage balance rod is in a step shape, the lower part of the salvage balance rod is a hollow tube, and the salvage balance rod is communicated with the locking block support and the inner cavity of the plug connector through a liquid outlet. The tubing plug for the oil and gas field is connected in an oil well production tubular column to the underground to be in place, so that the anti-spraying operation with well control can be realized, the loading capacity can reach more than 40 MPa; the tubing plug for the oil and gas field is connected into the tube column at one step, the sealing oil tube anti-spraying operation can be repeatedly realized; and the tubing plug for the oil and gas field is safe and reliable and the operation cost and operation risks are reduced.
Description
Technical field:
The utility model relates to a kind of oil gas field tubing plug, belongs to petroleum production engineering well workover technology field, oil field, the relevant special-purpose calker that uses during particularly a kind of oil gas well place under repair operation.
Background technology:
Oil well repairing operation adopts the well killing fluid kill-job often, and oil reservoir is polluted, and has influenced reservoir recovery.In order to reduce pollution to oil reservoir, usually when maintenance high-pressure oil gas well, adopt Operating Pressure, promptly not kill-job, open flow, keep not playing lower tubular column under the former borehole pressure situation, before removing oil pipe, must at first stop up oil pipe, it is excessive from well head to prevent that highly pressurised liquids such as crude oil, water from entering in the oil pipe.A kind of special tool that tubing plug comes to this, after tubing plug is lowered to oil pipe, oil discharge passage in the temporary close oil pipe, can keep in repair wellhead equipment, and can allow workover rig well site away from keyboard carry out the operation of other oil well, by oil pipe is pressurizeed and pressure release, can test oil pipe, the pressurization that also can be used for the fluid power packer sets etc.At present the general bearing capacity of tubing plug that uses is low, generally can only bear 24MPa, causes in the work progress success rate not high.
" a kind of tubing plug " that Chinese patent ZL99253285.X introduces is exactly use therein a kind of tubing plug, the little oil well operation of pressure reduction about this blanking plug can satisfy, but for about the bigger oil well of pressure reduction, this blanking plug does not reach requirement.In being lowered to the oil pipe process, when the blanking plug upper pressure was big, it is descending that mandrel might be cut off shear pin, and at this moment alignment pin is ejected, embed in the groove that discharges cover and spacing ring formation, at this moment, mandrel middle part projection also is disengaged the constraint that release puts the branch claw, after the termination of pumping, the top plug drives mandrel and discharges cover whole up on the downforce, the branch claw is regained so that by the projection in the seating nipple to discharging the cover axle center, and this moment, sealing ring did not just have sealing function, caused blanking plug to lose efficacy; This blanking plug can only be realized once being lowered in addition, and direct action can not be realized once going into the well and repeatedly use.
Summary of the invention:
The purpose of this utility model is the defective that the bearing capacity that exists at above-mentioned prior art is low, blanking plug easily lost efficacy, and a kind of oil gas field tubing plug is provided.
The utility model is achieved in that
The utility model is made up of salvaging balancing pole, lock dog holder, blanking plug joint, lock dog, balance pipe, sealing cup, the holder of skin wrist, blanking plug sealed body, plug, the blanking plug joint is threaded with the blanking plug sealed body, and blanking plug joint middle part is provided with boss; The lock dog holder is connected with the salvaging balancing pole by shear pin, the lock dog holder is connected by screw thread successively with balance pipe, plug, in the through hole at lock dog holder middle part lock dog is installed, lock dog is connected between the boss and blanking plug sealed body top at blanking plug joint middle part, on the outer tube wall of the balance pipe on plug top, be with holder of skin wrist and sealing cup, on balance pipe and the corresponding position of skin wrist holder, have balance pipe; It is stepped salvaging balancing pole, and the bottom is a hollow section, is communicated with by the inner chamber of fluid hole with lock dog holder and blanking plug joint.
The lock dog holder is connected with the salvaging balancing pole by shear pin.
On the tube wall of the upper/lower terminal that salvaging balancing pole bottom is corresponding with balance pipe sealing ring is installed.
Blanking plug sealed body bottom is provided with inner lock buckle.
Advantage of the present utility model with beneficial effect is: be connected the utility model and go into the well to put in place and can realize not kill-job preventing spraying operation in oil well production string, bearing capacity can reach more than the 40MPa, a running string, can repeat to realize sealing oil pipe preventing spraying operation, safe and reliable, reduced operating cost and operating risk.
Description of drawings:
Fig. 1 is a structural representation of the present utility model.
The specific embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
By accompanying drawing 1 as can be known, the utility model is made up of salvaging balancing pole 1, lock dog holder 2, blanking plug joint 3, lock dog 7, balance pipe 8, sealing cup 9, skin wrist holder 12, blanking plug sealed body 13, plug 14, blanking plug joint 3 is threaded with blanking plug sealed body 13, and blanking plug joint 3 middle parts are provided with boss 6; Lock dog holder 2 is connected with salvaging balancing pole 1 by shear pin 5, lock dog holder 2 and balance pipe 8, plug 14 are connected successively by screw thread, in the through hole at lock dog holder 2 middle parts lock dog 7 is installed, lock dog 7 is connected between the boss 6 and blanking plug sealed body 13 tops at blanking plug joint 3 middle parts; On the outer tube wall of the balance pipe 8 on plug 14 tops, be with holder 12 of skin wrist and sealing cup 9, on balance pipe 8 and skin wrist holder 12 corresponding tube walls, have balance pipe 11; It is stepped salvaging balancing pole 1, and the bottom is a hollow section, is communicated with by the inner chamber of fluid hole 4 with lock dog holder 2 and blanking plug joint 3.
On the tube wall of the upper/lower terminal that described salvaging balancing pole 1 bottom and balance pipe 11 are corresponding sealing ring 10 is installed.
Described blanking plug sealed body 13 bottoms are provided with inner lock buckle 15.
During construction, with the utility model blanking plug joint 3 be connected with the top oil pipe, blanking plug sealed body 13 bottoms connect oil pipe and go into the well, the sealing oil pipe is realized preventing spraying operation.
When needs take out blanking plug, salvage balancing pole 1 by being lowered to carry on the special tool, break shear pin 5, it is up to salvage balancing pole 1, lock dog 7 is retracted in the lower step of salvaging balancing pole 1, simultaneously, the balance pipe 11 of balance pipe 8 and skin wrist holder 12 is communicated with salvaging balancing pole 1 inner chamber, and the oil pipe tubing string is communicated with up and down by fluid hole 4, pressure balance, carry in the continuation and salvage balancing pole 1, the upper step of salvaging balancing pole 1 is articulated in the top of lock dog holder 2 on the shoulder, can be with lock dog holder 2, lock dog 7, balance pipe 8, sealing cup 9, O-ring seal 10, skin wrist holder 12, plug 14 takes out in oil pipe.
When operation once more, be lowered to the shutoff fuse and be connected with the inner lock buckle 15 of blanking plug sealed body 13 bottoms, can stop up oil pipe and realize that band is pressed and pull out of hole, finish not kill-job preventing spraying operation.
Claims (4)
1. oil gas field tubing plug, form by salvaging balancing pole (1), lock dog holder (2), blanking plug joint (3), lock dog (7), balance pipe (8), sealing cup (9), skin wrist holder (12), blanking plug sealed body (13), plug (14), it is characterized in that: blanking plug joint (3) is threaded with blanking plug sealed body (13), and blanking plug joint (3) middle part is provided with boss (6); Lock dog holder (2) is connected by screw thread successively with balance pipe (8), plug (14), in the through hole at lock dog holder (2) middle part lock dog (7) is installed, lock dog (7) is connected between the boss (6) and blanking plug sealed body (13) top at blanking plug joint (3) middle part; On the outer tube wall of the balance pipe (8) on plug (14) top, be with skin wrist holder (12) and sealing cup (9), on balance pipe (8) and the corresponding tube wall of skin wrist holder (12), have balance pipe (11); It is stepped salvaging balancing pole (1), and the bottom is a hollow section, is communicated with by the inner chamber of fluid hole (4) with lock dog holder (2) and blanking plug joint (3).
2. a kind of oil gas field tubing plug according to claim 1 is characterized in that: lock dog holder (2) is connected with salvaging balancing pole (1) by shear pin (5).
3. a kind of oil gas field tubing plug according to claim 1 and 2 is characterized in that: on the tube wall of the upper/lower terminal that salvaging balancing pole (1) bottom is corresponding with balance pipe (11) sealing ring (10) is installed.
4. a kind of oil gas field tubing plug according to claim 1 and 2 is characterized in that: blanking plug sealed body (13) bottom is provided with inner lock buckle (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020565204 CN201826805U (en) | 2010-10-18 | 2010-10-18 | Tubing plug for oil and gas field |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020565204 CN201826805U (en) | 2010-10-18 | 2010-10-18 | Tubing plug for oil and gas field |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201826805U true CN201826805U (en) | 2011-05-11 |
Family
ID=43965348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020565204 Expired - Lifetime CN201826805U (en) | 2010-10-18 | 2010-10-18 | Tubing plug for oil and gas field |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201826805U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206187A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Blanking plug for sand prevention |
| CN105134133A (en) * | 2015-09-18 | 2015-12-09 | 中国石油化工股份有限公司 | Steel wire dropping-fishing self-balance setting packer |
| CN110043214A (en) * | 2019-04-19 | 2019-07-23 | 李眉博 | A kind of tubing plug |
| CN111794708A (en) * | 2020-07-16 | 2020-10-20 | 大庆金祥寓科技有限公司 | Double-lock blowout prevention working barrel capable of relieving pressure |
| CN114320212A (en) * | 2022-03-10 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Oil pipe plug for under-pressure operation |
| CN115126454A (en) * | 2021-03-24 | 2022-09-30 | 中国石油天然气股份有限公司 | Oil pipe plug |
-
2010
- 2010-10-18 CN CN 201020565204 patent/CN201826805U/en not_active Expired - Lifetime
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103206187A (en) * | 2013-04-22 | 2013-07-17 | 中国海洋石油总公司 | Blanking plug for sand prevention |
| CN103206187B (en) * | 2013-04-22 | 2015-10-21 | 中国海洋石油总公司 | Sand control blanking plug |
| CN105134133A (en) * | 2015-09-18 | 2015-12-09 | 中国石油化工股份有限公司 | Steel wire dropping-fishing self-balance setting packer |
| CN110043214A (en) * | 2019-04-19 | 2019-07-23 | 李眉博 | A kind of tubing plug |
| CN111794708A (en) * | 2020-07-16 | 2020-10-20 | 大庆金祥寓科技有限公司 | Double-lock blowout prevention working barrel capable of relieving pressure |
| CN111794708B (en) * | 2020-07-16 | 2021-03-23 | 大庆金祥寓科技有限公司 | Double-lock blowout prevention working barrel capable of relieving pressure |
| CN115126454A (en) * | 2021-03-24 | 2022-09-30 | 中国石油天然气股份有限公司 | Oil pipe plug |
| CN115126454B (en) * | 2021-03-24 | 2024-05-28 | 中国石油天然气股份有限公司 | Oil pipe blanking plug |
| CN114320212A (en) * | 2022-03-10 | 2022-04-12 | 四川圣诺油气工程技术服务有限公司 | Oil pipe plug for under-pressure operation |
| CN114320212B (en) * | 2022-03-10 | 2022-05-13 | 四川圣诺油气工程技术服务有限公司 | Oil pipe plug for operation under pressure |
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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: 20110511 |