CN109695422A - A kind of packer sealing connected pipes - Google Patents
A kind of packer sealing connected pipes Download PDFInfo
- Publication number
- CN109695422A CN109695422A CN201811652845.3A CN201811652845A CN109695422A CN 109695422 A CN109695422 A CN 109695422A CN 201811652845 A CN201811652845 A CN 201811652845A CN 109695422 A CN109695422 A CN 109695422A
- Authority
- CN
- China
- Prior art keywords
- connected pipes
- lock tube
- screw thread
- threaded sleeve
- wall
- 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.)
- Granted
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
Abstract
The present invention relates to oil exploration equipment technical fields, and disclose a kind of packer sealing connected pipes, including connected pipes I, the side of I outer surface of connected pipes is equipped with threaded sleeve, the side of threaded sleeve inner wall is connect with the outer surface thread of connected pipes I, ring-shaped clamping sleeve, and the end thereof contacts of the side of ring-shaped clamping sleeve and connected pipes I are fixedly installed in the middle part of threaded sleeve inner wall, the other side of the threaded sleeve inner wall is threaded with connected pipes II.The packer sealing connected pipes, compared with existing oil pipe interconnection technique, it is effectively increased the fastness and leakproofness of connected pipes I and connected pipes II in connection, the case where being all not in leakage during conveying oil gas, simultaneously because threaded sleeve can closely mesh together always with the screw thread on connected pipes I and connected pipes II, therefore it is not in the phenomenon that oil pipe is threaded off, and effectively raises the stability and reliability of the connected pipes.
Description
Technical field
The present invention relates to oil exploration equipment technical field, specially a kind of packer sealing connected pipes.
Background technique
Connected pipes generally refer to that crude oil or natural gas are transported to the pipe of earth's surface from oil-gas Layer after probing is completed
Road, the tubing length as defined in API are divided into three kinds: i.e. R-1 is 4.88~7.62m, R-2 is 7.62~10.36m, R-3 is
10.36m is to longer, but the depth of oil well is but as deep as tens of kms, therefore is all threaded in the end of connected pipes, then use
Box cupling connects to be deep into oil-gas Layer together.
But during actual operation, the threaded connection part of oil pipe is its weak link, in underground height
Under the action of temperature, high pressure and high mechanical strength, the thread gluing phenomenon that the threaded connection place of oil pipe occurs is its most common failure shape
One of formula has seriously affected secured and sealing integrality when oil pipe connection, oil pipe is caused to occur during conveying oil gas
The problem of leakage, and under thread gluing serious situation, or even will appear the phenomenon that oil pipe is threaded off, it is brought to oil gas mining operations
Serious consequence, gently then stop production well workover, and heavy then well is ruined, cause huge economic loss.
Summary of the invention
(1) the technical issues of solving
The present invention provides a kind of packer sealing connected pipes, safely may be used when having stability height, good airproof performance, using
By the advantages of, solve during actual operation, the threaded connection part of oil pipe is its weak link, in underground
Under the action of high temperature, high pressure and high mechanical strength, the thread gluing phenomenon that the threaded connection place of oil pipe occurs is its most common failure
One of form has seriously affected secured and sealing integrality when oil pipe connection, oil pipe is caused to go out during conveying oil gas
The problem of now leaking, and under thread gluing serious situation, or even will appear the phenomenon that oil pipe is threaded off, give oil gas mining operations band
Serious consequence is carried out, the problem of gently then stop production well workover, and heavy then well is ruined, causes huge economic losses.
(2) technical solution
The invention provides the following technical scheme: a kind of packer sealing connected pipes, including connected pipes I, the connection
The side of I outer surface of oil pipe is equipped with threaded sleeve, and the side of the threaded sleeve inner wall and the outer surface thread of connected pipes I connect
It connects, ring-shaped clamping sleeve, and one end of the side of ring-shaped clamping sleeve and connected pipes I is fixedly installed in the middle part of the threaded sleeve inner wall
Contact, the other side of the threaded sleeve inner wall is threaded with connected pipes II, and one end of connected pipes II and annular snap
Another side contacts of set, the outer surface of the threaded sleeve are equipped with screw thread lock tube, and the inner wall of screw thread lock tube and threaded sleeve
Outer wall is fixedly attached, and the outer surfaces of the connected pipes II is equipped with fixed fixture block, and the side of fixed fixture block respectively with screw thread card
Set is fixedly connected with the side of screw thread lock tube, and the outer surface of the screw thread lock tube is equipped with fixed lock tube, and the inner wall of fixed lock tube
It is connect with the outer surface thread of screw thread lock tube.The difference of the ring-shaped clamping sleeve inner circle radius and exradius is equal to connected pipes I
Pipe thickness.The threaded sleeve is using a kind of alloyed copper plastic material.
Preferably, the screw thread lock tube is using high carbon steel material, and the outer surface of screw thread lock tube is equipped with self-locking thread.
Preferably, the inside of the fixed lock tube is equipped with internal screw thread, and the self-locking thread kissing with screw thread lock tube outer surface
It closes, while the two sides up and down of fixed lock tube outer surface mill and put down.
(3) beneficial effect
The present invention have it is following the utility model has the advantages that
The packer sealing connected pipes, by the setting of threaded sleeve, first by II screw thread of connected pipes I and connected pipes
It links together, later using the screw thread on screw thread lock tube and the fixed uniform thread-rolling screw cutting ferrule of lock tube, makes its screw thread and company
The screw thread stabilization connect on oil pipe I and connected pipes II effectively meshes together, moreover, because threaded sleeve is using plasticity
Material, no matter therefore connected pipes I and connected pipes II in Underground Department in the state of what, threaded sleeve can be passed through
When being plastically deformed and its screw thread closely fit together, be not in gap, while can also effectively buffer oil pipe work
Generation mechanical strength, the phenomenon that reducing its impact force to threaded connection place, be not in thread abrasion, thread gluing, with
Existing oil pipe interconnection technique is compared, be effectively increased connected pipes I and connected pipes II connection when fastness and
The case where leakproofness during conveying oil gas is not in leakage, simultaneously because threaded sleeve and connected pipes I and connecting
Screw thread on oil pipe II can closely mesh together always, therefore it the problem of oil pipe tripping will not occur, effective to improve
The stability and reliability of the connected pipes.
Detailed description of the invention
Fig. 1 is schematic structural view of the invention；
Fig. 2 is the cross-sectional view of structure of the invention connected pipes I；
Fig. 3 is the socket schematic diagram of structure of the invention threaded sleeve and screw thread lock tube；
Fig. 4 is the cross-sectional view of the fixed lock tube of structure of the invention；
Fig. 5 is the right side cross-sectional view of the fixed lock tube of structure of the invention.
In figure: 1, connected pipes I；2, threaded sleeve；3, ring-shaped clamping sleeve；4, connected pipes II；5, screw thread lock tube；6, fixed
Fixture block；7, fixed lock tube.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.It is based on
Embodiment in the present invention, it is obtained by those of ordinary skill in the art without making creative efforts every other
Embodiment shall fall within the protection scope of the present invention.
Fig. 1-5, a kind of packer sealing connected pipes, including connected pipes I 1 are please referred to, I 1 outer surface of connected pipes
Side is equipped with threaded sleeve 2, and the side of 2 inner wall of threaded sleeve is connect with the outer surface thread of connected pipes I 1, in threaded sleeve 2
Ring-shaped clamping sleeve 3, and the end thereof contacts of the side of ring-shaped clamping sleeve 3 and connected pipes I 1, threaded sleeve 2 are fixedly installed in the middle part of wall
The other side of inner wall is threaded with connected pipes II 4, and another side contacts of one end of connected pipes II 4 and ring-shaped clamping sleeve 3,
The outer surface of threaded sleeve 2 is equipped with screw thread lock tube 5, and the inner wall of screw thread lock tube 5 and the outer wall of threaded sleeve 2 are fixedly attached, even
The outer surface for connecing oil pipe II 4 is equipped with fixed fixture block 6, and the side of fixed fixture block 6 respectively with threaded sleeve 2 and screw thread lock tube 5
Side is fixedly connected, and the outer surface of screw thread lock tube 5 is equipped with fixed lock tube 7, and the inner wall of fixed lock tube 7 and screw thread lock tube 5 is outer
Surface is threadedly coupled.
In the technical program, the difference of 3 inner circle radius of ring-shaped clamping sleeve and exradius is equal to the pipe thickness of connected pipes I 1,
Setting to the difference of 3 inner circle radius of ring-shaped clamping sleeve and exradius, so that ring-shaped clamping sleeve 3 and connected pipes I 1 and connected pipes II
It can perfectly fit together between 4, increase the fluency during oil-gas transportation, reduce resistance when oil-gas transportation.
In the technical program, threaded sleeve 2 is using a kind of alloyed copper plastic material, for 2 plasticity material of threaded sleeve
The setting of material, no matter so that therefore connected pipes I 1 and connected pipes II 4 in Underground Department in the state of what, can pass through
The plastic deformation of threaded sleeve 2 closely fits together its screw thread, is not in gap, while can also effectively buffer
Oil pipe work when generation mechanical strength, reduce its impact force to threaded connection place, it is ensured that be not in thread abrasion,
The phenomenon that thread gluing.
In the technical program, screw thread lock tube 5 is using high carbon steel material, and the outer surface of screw thread lock tube 5 is equipped with self-locking
Screw thread, the setting for the material of screw thread lock tube 5, so that fixed lock tube 7 is upon application of pressure, it can be equal by screw thread lock tube 5
Even passes to pressure threaded sleeve 2, so that on the screw thread in threaded sleeve 2 and connected pipes I 1 and connected pipes II 4
Screw thread closely can uniformly fit together, simultaneously for the setting of its self-locking thread, it is ensured that mistake of the oil pipe in conveying oil gas
The case where Cheng Zhong, fixed lock tube 7 is not in automatic loosening.
In the technical program, the inside of fixed lock tube 7 is equipped with internal screw thread, and the self-locking thread with 5 outer surface of screw thread lock tube
It matches, while the two sides up and down of fixed 7 outer surface of lock tube mill and put down, it is flat for two side millings above and below fixed 7 outer surface of lock tube
Setting improves convenience when use so that fixed lock tube 7 has a good stress point.
The application method and working principle of the present embodiment:
When in use, fixed lock tube 7 is nested on the outside of connected pipes I 1 first, it then will be inside threaded sleeve 2
Side be threaded in one end of connected pipes I 1, until the end thereof contacts of the side of connected pipes I 1 and ring-shaped clamping sleeve 3, it
The threaded one end of connected pipes II 4 is connected to the other side inside threaded sleeve 2 again afterwards, until the side of connected pipes II 4
With another end in contact of ring-shaped clamping sleeve 3, it is then rotated further by fixed lock tube 7, so that screw thread and screw thread lock tube inside fixed lock tube 7
Screw thread engagement on 5, then constantly rotates fixed lock tube 7, until fixed lock tube 7 is socketed in the appearance of screw thread lock tube 5 completely
On face, while the screw thread in elastic material threaded sleeve 2 is squeezed, makes itself and the screw thread on connected pipes I 1 and connected pipes II 4
It closely fits together, during conveying oil gas, the change of its generation is buffered by the flexible deformation of threaded sleeve 2
Shape reduces damage and destruction for tubing round thread junction.
Claims (3)
1. a kind of packer sealing connected pipes, including connected pipes I (1), it is characterised in that: connected pipes I (1) appearance
The side in face is equipped with threaded sleeve (2), and the side of threaded sleeve (2) inner wall and the outer surface thread of connected pipes I (1) connect
Connect, be fixedly installed with ring-shaped clamping sleeve (3) in the middle part of threaded sleeve (2) inner wall, and the side of ring-shaped clamping sleeve (3) with connect oil
The end thereof contacts of pipe I (1), the other side of threaded sleeve (2) inner wall is threaded with connected pipes II (4), and connects oil
The outer surface of one end of pipe II (4) and another side contacts of ring-shaped clamping sleeve (3), the threaded sleeve (2) is equipped with screw thread lock tube
(5), and the inner wall of screw thread lock tube (5) and the outer wall of threaded sleeve (2) are fixedly attached, the outer surface of the connected pipes II (4)
Equipped with fixed fixture block (6), and the side of fixed fixture block (6) is fixed with the side of threaded sleeve (2) and screw thread lock tube (5) connect respectively
It connects, the outer surface of the screw thread lock tube (5) is equipped with fixed lock tube (7), and the inner wall of fixed lock tube (7) and screw thread lock tube (5)
Outer surface thread connection；
The difference of ring-shaped clamping sleeve (3) inner circle radius and exradius is equal to the pipe thickness of connected pipes I (1)；The screw thread
Cutting ferrule (2) is using a kind of alloyed copper plastic material.
2. a kind of packer sealing connected pipes according to claim 1, it is characterised in that: the screw thread lock tube (5) is adopted
It is high carbon steel material, and the outer surface of screw thread lock tube (5) is equipped with self-locking thread.
3. a kind of packer sealing connected pipes according to claim 1, it is characterised in that: the fixed lock tube (7)
Inside is equipped with internal screw thread, and matches with the self-locking thread of screw thread lock tube (5) outer surface, while fixed lock tube (7) outer surface
Upper and lower two sides mill flat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652845.3A CN109695422B (en) | 2018-12-29 | 2018-12-29 | A kind of packer sealing connected pipes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811652845.3A CN109695422B (en) | 2018-12-29 | 2018-12-29 | A kind of packer sealing connected pipes |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109695422A true CN109695422A (en) | 2019-04-30 |
| CN109695422B CN109695422B (en) | 2019-10-22 |
Family
ID=66233079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811652845.3A Active CN109695422B (en) | 2018-12-29 | 2018-12-29 | A kind of packer sealing connected pipes |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109695422B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127801A (en) * | 2020-09-28 | 2020-12-25 | 张军 | Oil pipe for oil field downhole operation |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE20107720U1 (en) * | 2001-05-07 | 2001-08-02 | Brehm Bernhardt | Loosening aid for tools |
| CN2451715Y (en) * | 2000-10-12 | 2001-10-03 | 西南石油学院 | Petroleum casing and oil-pipe high-pressure air sealing coupling structure |
| CN205532356U (en) * | 2015-12-03 | 2016-08-31 | 张荣华 | Petroleum casing joint |
| CN106641501A (en) * | 2016-11-28 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Petroleum pipe connection hoop |
| CN207064890U (en) * | 2017-06-22 | 2018-03-02 | 南通爱慕希机械股份有限公司 | A kind of high-pressure oil pipe joint easy for installation |
| CN207975360U (en) * | 2018-02-27 | 2018-10-16 | 天津精工石油专用管件有限公司 | A kind of modified petroleum pipeline pipe end connector |
-
2018
- 2018-12-29 CN CN201811652845.3A patent/CN109695422B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2451715Y (en) * | 2000-10-12 | 2001-10-03 | 西南石油学院 | Petroleum casing and oil-pipe high-pressure air sealing coupling structure |
| DE20107720U1 (en) * | 2001-05-07 | 2001-08-02 | Brehm Bernhardt | Loosening aid for tools |
| CN205532356U (en) * | 2015-12-03 | 2016-08-31 | 张荣华 | Petroleum casing joint |
| CN106641501A (en) * | 2016-11-28 | 2017-05-10 | 无锡金顶石油管材配件制造有限公司 | Petroleum pipe connection hoop |
| CN207064890U (en) * | 2017-06-22 | 2018-03-02 | 南通爱慕希机械股份有限公司 | A kind of high-pressure oil pipe joint easy for installation |
| CN207975360U (en) * | 2018-02-27 | 2018-10-16 | 天津精工石油专用管件有限公司 | A kind of modified petroleum pipeline pipe end connector |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112127801A (en) * | 2020-09-28 | 2020-12-25 | 张军 | Oil pipe for oil field downhole operation |
| CN112127801B (en) * | 2020-09-28 | 2021-09-14 | 大安市鸿聚石油钻采有限公司 | Oil pipe for oil field downhole operation |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109695422B (en) | 2019-10-22 |
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