CN209293701U - A kind of packer sealing connected pipes - Google Patents

Abstract

The utility model 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

A kind of packer sealing connected pipes

Technical field

The utility model 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.

Utility model content

(1) the technical issues of solving

The utility model provides a kind of packer sealing connected pipes, pacifies when having stability height, good airproof performance, using Complete reliable advantage, solves during actual operation, and the threaded connection part of oil pipe is its weak link, Under the action of underground high temperature, high pressure and high mechanical strength, the thread gluing phenomenon that the threaded connection place of oil pipe occurs is that its is most common One of failure mode has seriously affected secured and sealing integrality when oil pipe connection, has caused oil pipe in the process of conveying oil gas Middle the problem of leaking, and under thread gluing serious situation, or even will appear the phenomenon that oil pipe is threaded off, give oil-gas mining to make The problem of industry brings serious consequence, and gently then stop production well workover, and heavy then well is ruined, causes huge economic losses.

(2) technical solution

The utility model provides the following technical solutions: a kind of packer sealing connected pipes, including connected pipes I, described The side of I outer surface of connected pipes is equipped with threaded sleeve, the side of the threaded sleeve inner wall and the outer surface spiral shell of connected pipes I Line connects, and ring-shaped clamping sleeve, and the side of ring-shaped clamping sleeve and connected pipes I are fixedly installed in the middle part of the threaded sleeve inner wall End thereof contacts, the other side of the threaded sleeve inner wall are threaded with connected pipes II, and one end of connected pipes II and ring Another side contacts of shape cutting ferrule, the outer surface of the threaded sleeve are equipped with screw thread lock tube, and the inner wall of screw thread lock tube and screw thread card The outer wall of set 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 spiral shell Line cutting ferrule 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 fixes lock tube Inner wall is connect with the outer surface thread of screw thread lock tube.

Preferably, the difference of the ring-shaped clamping sleeve inner circle radius and exradius is equal to the pipe thickness of connected pipes I.

Preferably, 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 utility model 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 a schematic structural view of the utility model；

Fig. 2 is the cross-sectional view of the utility model structure connected pipes I；

Fig. 3 is the socket schematic diagram of the utility model structure threaded sleeve and screw thread lock tube；

Fig. 4 is the cross-sectional view of the fixed lock tube of the utility model structure；

Fig. 5 is the right side cross-sectional view of the fixed lock tube of the utility model structure.

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

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

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 (5)

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.

2. a kind of packer sealing connected pipes according to claim 1, it is characterised in that: in the ring-shaped clamping sleeve (3) The difference of radius of circle and exradius is equal to the pipe thickness of connected pipes I (1).

3. a kind of packer sealing connected pipes according to claim 1, it is characterised in that: the threaded sleeve (2) is adopted It is a kind of alloyed copper plastic material.

4. 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.

5. 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.