CN207715115U - A kind of self sealss pressure-bearing pipe nipple - Google Patents
A kind of self sealss pressure-bearing pipe nipple Download PDFInfo
- Publication number
- CN207715115U CN207715115U CN201721527790.4U CN201721527790U CN207715115U CN 207715115 U CN207715115 U CN 207715115U CN 201721527790 U CN201721527790 U CN 201721527790U CN 207715115 U CN207715115 U CN 207715115U
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- CN
- China
- Prior art keywords
- mandrel
- oil pipe
- inner sleeve
- self sealss
- housing
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Abstract
The utility model provides a kind of self sealss pressure-bearing pipe nipple, including housing, inner sleeve, mandrel, the first connecting portion part and second connecting portion part.One end of housing is connect with oil pipe, also, housing is sheathed on inner sleeve periphery, and housing is fixed with inner sleeve by the first connecting portion part.Mandrel is arranged in inner sleeve, and mandrel is connected with the inner sleeve by second connecting portion part.There is the part that cooperation can be formed with the interior end for putting on close oil pipe close to the end of oil pipe, also, mandrel can form cooperation towards the direction movement far from oil pipe with inner sleeve on mandrel, mandrel and inner sleeve can be moved out housing towards the direction far from oil pipe simultaneously.It can ensure to build the pressure operation after realizing packer setting, oil pipe can be detached from later and establish fluid course.
Description
Technical field
The utility model belongs to oil drilling Completion Techniques field, and in particular to a kind of self sealss pressure-bearing pipe nipple.
Background technology
By tripping in special-purpose nipple, pitching or bar and steel wire operation are sent in bott stick to special-purpose nipple, are sealed and are suppressed
Pressure realizes the well-completing process that packer setting is widely used in current oilfield exploitation procedure, especially in high pressure and deep well
Using universal.The place but existing technique comes with some shortcomings, the ball or bott stick such as put into is because certain reason cannot be thrown into
Position, especially in the larger wellbore of hole deviation degree, institute's throwing steel ball and bar cannot rely on gravity and reach ball seat or pole socket, even if reaching
Ball seat or pole socket, sealing effect is also very poor, cannot achieve the operation that builds the pressure after sealing.In order to improve set packer well-completing process
Adaptability reduces work operations amount additional in completion practice, reduces operating cost, needs for the design of existing pressure-bearing pipe nipple
Lack limit, a kind of new down-hole string pressure-bearing blanking plug of utility model.
Utility model content
The technical problems to be solved in the utility model is that overcome the deficiencies of the prior art and provide a kind of self sealss pressure-bearing short
Section, it can be ensured that build the pressure operation after realization packer setting, can be detached from oil pipe later and establish fluid course.
In order to solve the above technical problems, the utility model proposes technical solution be：
A kind of self sealss pressure-bearing pipe nipple, including housing, inner sleeve, mandrel, the first connecting portion part and second connecting portion part.Outside
One end of set is connect with oil pipe, also, housing is sheathed on inner sleeve periphery, and housing is fixed with inner sleeve by the first connecting portion part.Core
Axis is arranged in inner sleeve, and mandrel is connected with the inner sleeve by second connecting portion part.On mandrel close to oil pipe end have with
The part of cooperation can be formed by inside putting on the end close to oil pipe, also, mandrel can towards far from oil pipe direction movement with it is interior
Set forms cooperation, and mandrel and inner sleeve can be moved out housing towards the direction far from oil pipe simultaneously.
Self sealss pressure-bearing pipe nipple according to the present utility model, housing are connected under oil pipe, overcome the second company by mandrel
Resistance movement and the inner sleeve of relay part form cooperation and realize self sealss to realize that positive pressure-bearing completes packer setting, and with
This can undertake buffer brake simultaneously, be conducive to top completion practice and implement, and after the completion of completion practice, then suppress from well head, core
Axis falls into shaft bottom together with inner sleeve, enters oil pipe channel to establish oil/gas well.Therefore avoid pitching in the prior art or
Bar cannot throw into position, and especially in the larger wellbore of hole deviation degree, institute's throwing steel ball and bar cannot rely on gravity and reach ball seat or bar
Seat cannot achieve the problem of operation is built the pressure after sealing even if very poor if arrival ball seat or pole socket sealing effect.
For above-mentioned technical proposal, the further improvement that can also be discussed below.
Self sealss pressure-bearing pipe nipple according to the present utility model, is arranged solvable in one preferred embodiment, on mandrel
Metal sleeve and fixing device are solved, and mandrel is equipped with the limiting slot for positioning dissolvable metal sleeve, fixing device position
In one end far from oil pipe on mandrel.It can dissolve and be equipped with elastic support member between metal sleeve and fixing device, and elasticity
Support member is equipped with the pre compressed magnitude that mandrel can be made to form cooperation with inner sleeve towards the direction movement far from oil pipe.
Specifically, self sealss pressure-bearing pipe nipple is connected to oil pipe lower part, tripping in completion tubular column to pre- depthkeeping before completion practice
Degree.It waits for after a certain period of time, can dissolve metal sleeve and gradually dissolving under downhole fluid effect, mandrel is in elastic support member tension
Overcome the resistance of second connecting portion part to move down under effect, contacted with inner cylinder, insulates lower channel.Pressure-bearing pipe nipple self sealss
Afterwards, it is suppressed from well head, suppresses set packer.Top operation is carried out later, such as opens sliding sleeve, replaces annular protective liquid etc..On
It after the completion of portion's completion practice, then suppresses from well head, mandrel and inner cylinder overcome the resistance of the first connecting portion part to drop downward into well together
Bottom reserves the channel that oil gas enters oil pipe.
Specifically, in one preferred embodiment, fixing device includes spacing collar and nut, and spacing collar is located at
Between elastic support member and nut, mandrel is equipped with the screw thread for attaching nut.Dismountable side such as it is connected through a screw thread
Formula fixes elastic support member, and installation and removal are simple and convenient, and makes the firm stabilization of installation of elastic support member.
Specifically, in one preferred embodiment, elastic support member is configured to spring.This structure type letter
Single, manufacturing cost is low.
Further, in one preferred embodiment, it is put on close to oil pipe with interior close to the end of oil pipe on mandrel
End form the part of cooperation between seal groove for accommodating sealing device is equipped between inner sleeve and housing.In this way may be used
To further increase the reliability of packer setting.
In one preferred embodiment, it is formed close to the end of oil pipe close to the end of oil pipe and interior put on mandrel
The part of cooperation is configured to circular conical surface.It is worked in coordination by circular conical surface, the area contacted with each other can be made to increase, so that
The time to build the pressure after self sealss increases, and is more conducive to top completion practice and implements.
Specifically, in one preferred embodiment, the first connecting portion part is pin.It is simple in structure, it is at low cost.
Specifically, in one preferred embodiment, second connecting portion part includes fixing axle and pin, fixing axle arrangement
On mandrel, pin respectively with inner sleeve and fixed axis connection.
Further, in one preferred embodiment, fixing axle be configured with the sleeve that is sheathed on mandrel and
It is arranged vertically on the structure of the axis on sleeve.Make the structure that mandrel and inner sleeve interconnect by fixing axle and pin, it can be true
It protects between mandrel and inner sleeve and forms gap, the fluid for being conducive to underground high temperature and pressure rapidly enters between mandrel and inner sleeve, to
It is quickly dissolved so that can dissolve metal sleeve, to realize packer setting.
In one preferred embodiment, the end being connect with oil pipe is put on outside is equipped with the screw thread for being used for connected pipes.
It can facilitate in this way and be connect with oil pipe.
Compared with prior art, the utility model has the advantage of：It can ensure to build the pressure operation after realizing packer setting,
It can be detached from oil pipe later and establish fluid course.
Description of the drawings
Hereinafter the utility model will be described in more detail based on the embodiments and with reference to the accompanying drawings.Wherein：
Fig. 1 schematically illustrates the structure of the self sealss pressure-bearing pipe nipple of the utility model embodiment.
In the accompanying drawings, identical component uses identical reference numeral.Attached drawing is not drawn according to actual ratio.
Specific implementation mode
Further detailed utility model is made to the utility model below in conjunction with the drawings and specific embodiments, but not therefore
And limit the scope of protection of the utility model.
Fig. 1 schematically illustrates the structure of the self sealss pressure-bearing pipe nipple 10 of the utility model embodiment.As shown in Figure 1, this
The self sealss pressure-bearing pipe nipple 10 of utility model embodiment, including housing 1, inner sleeve 2, mandrel 3, the first connecting portion part 4 and second connect
Relay part 5.One end of housing 1 is connect with oil pipe, also, housing 1 is sheathed on 2 periphery of inner sleeve, and housing 1 passes through first with inner sleeve 2
Connecting component 4 is fixed.Mandrel 3 is arranged in inner sleeve 2, and mandrel 3 is connect by second connecting portion part 5 with inner sleeve 2.Mandrel 3
It is upper that there is the part that cooperation can be formed with the end close to oil pipe in inner sleeve 2 close to the end of oil pipe, also, mandrel 3 can
It is formed and is coordinated with inner sleeve 2 towards the direction movement far from oil pipe, mandrel 3 and inner sleeve 2 can be moved towards the direction far from oil pipe simultaneously
It is detached from housing 1.The self sealss pressure-bearing pipe nipple of the utility model embodiment, housing are connected under oil pipe, overcome by mandrel
Resistance movement and the inner sleeve of two connecting components form cooperation and realize self sealss to realize that positive pressure-bearing completes packer setting, and
And buffer brake at the same time can be undertaken, be conducive to top completion practice and implement, after the completion of completion practice, then beats from well head
Pressure, mandrel fall into shaft bottom together with inner sleeve, enter oil pipe channel to establish oil/gas well.Therefore it avoids and throws in the prior art
Ball or bar cannot throw into position, and especially in the larger wellbore of hole deviation degree, institute's throwing steel ball and bar cannot rely on gravity and reach ball seat
Or pole socket cannot achieve the problem of operation is built the pressure after sealing even if very poor if arrival ball seat or pole socket sealing effect.Further
Ground, as shown in Figure 1, in one preferred embodiment, close to the end of oil pipe and close oil pipe in inner sleeve 2 on mandrel 3
End is formed between the part coordinated and inner sleeve is equipped with the seal groove 21 for accommodating sealing device between housing.In this way may be used
To further increase the reliability of packer setting.In one preferred embodiment, on mandrel 3 close to oil pipe end with
The part for forming cooperation in inner sleeve 2 close to the end of oil pipe is configured to circular conical surface.It is worked in coordination, can be made mutually by circular conical surface
The area being in contact increases, so that the time to build the pressure after self sealss increases, is more conducive to top completion practice and implements.
Specifically, in one preferred embodiment, as shown in Figure 1, being arranged 6 He of dissolvable metal sleeve on mandrel 3
Fixing device 7, and mandrel 3 is equipped with the limiting slot 31 for positioning dissolvable metal sleeve 6, and fixing device 7 is located at mandrel 3
Upper one end far from oil pipe.It can dissolve and be equipped with elastic support member 8 between metal sleeve 6 and fixing device 7, and flexibly support
Component 8 is equipped with the pre compressed magnitude that mandrel 3 can be made to form cooperation with inner sleeve 2 towards the direction movement far from oil pipe.Specifically, this reality
With the self sealss pressure-bearing pipe nipple of new embodiment, self sealss pressure-bearing pipe nipple is connected to oil pipe lower part before completion practice, tripping in is complete
Well casing column is to predetermined depth.It waits for after a certain period of time, can dissolve metal sleeve and gradually dissolving under downhole fluid effect, mandrel is in bullet
Property support member tension force effect under overcome the resistance of second connecting portion part to move down, contacted with inner cylinder, insulate lower channel.It holds
After pressing pipe nipple self sealss, is suppressed from well head, suppress set packer.Top operation is carried out later, such as opens sliding sleeve, replaces annular space
Protect liquid etc..It after the completion of the completion practice of top, then suppresses from well head, mandrel and inner cylinder overcome the resistance of the first connecting portion part together
Shaft bottom is dropped downward into, the channel that oil gas enters oil pipe is reserved.Further, in one preferred embodiment, fixing device 7
Including spacing collar 71 and nut 72, between elastic support member 8 and nut 72, mandrel 3 is equipped with to be used spacing collar 71
In the screw thread of attaching nut 72.It dismountable mode such as is connected through a screw thread and fixes elastic support member, installation and removal are simple
It is convenient, and make the firm stabilization of installation of elastic support member.Specifically, in one preferred embodiment, elasticity branch
Support part part 8 is configured to spring.This structure type is simple, and manufacturing cost is low.
As shown in Figure 1, in one preferred embodiment, the first connecting portion part 4 is pin 9.It is simple in structure, cost
It is low.Specifically, in one preferred embodiment, second connecting portion part 5 includes fixing axle 51 and pin 9,51 cloth of fixing axle
It sets on mandrel 3, pin 9 is connect with inner sleeve 2 and fixing axle 51 respectively.Further, in one preferred embodiment, Gu
Dead axle 51 is configured with the structure of the sleeve 511 being sheathed on mandrel 3 and the axis 512 being arranged vertically on sleeve 511.Pass through
Fixing axle and pin make the structure that mandrel and inner sleeve interconnect, it can be ensured that form gap between mandrel and inner sleeve, be conducive to
The fluid of underground high temperature and pressure rapidly enters between mandrel and inner sleeve, is quickly dissolved so that can dissolve metal sleeve, to
Realize packer setting.In one preferred embodiment, the end being connect with oil pipe on housing 1, which is equipped with, is used for connected pipes
Screw thread, can facilitate connect with oil pipe in this way.
According to above-described embodiment, it is seen then that the utility model is related to self sealss pressure-bearing pipe nipple can ensure realize packer
Build the pressure operation after setting, and can be detached from oil pipe later and establish fluid course.
Although the present utility model has been described by reference to the preferred embodiments, but the scope of the utility model is not being departed from
In the case of, various improvement can be carried out to it and can replace component therein with equivalent.Especially, as long as being not present
Structural conflict, items technical characteristic mentioned in the various embodiments can be combined in any way.The utility model is simultaneously
It is not limited to specific embodiment disclosed herein, but includes all technical solutions fallen within the scope of the claims.
Claims (10)
1. a kind of self sealss pressure-bearing pipe nipple, which is characterized in that connect including housing, inner sleeve, mandrel, the first connecting portion part and second
Relay part；
One end of the housing is connect with oil pipe, also, the housing is sheathed on the inner sleeve periphery, the housing with it is described interior
Set is fixed by the first connecting portion part；The mandrel is arranged in the inner sleeve, and the mandrel passes through the second connection
Component is connect with the inner sleeve；
There is on the mandrel close to the end of oil pipe the part that cooperation can be formed with the interior end for putting on close oil pipe,
Also, the mandrel, which can be formed towards the direction movement far from oil pipe with the inner sleeve, to be coordinated, the mandrel and the inner sleeve energy
It is enough to be moved out the housing towards the direction far from oil pipe simultaneously.
2. self sealss pressure-bearing pipe nipple according to claim 1, which is characterized in that be arranged dissolvable metallic sheath on the mandrel
Cylinder and fixing device, the mandrel are equipped with the limiting slot for positioning the dissolvable metal sleeve；The fixing device position
In one end far from oil pipe on the mandrel；
Elastic support member, and the elastic support member are equipped between the dissolvable metal sleeve and the fixing device
Equipped with the mandrel can be made the pre compressed magnitude coordinated is formed with the inner sleeve towards the direction movement far from oil pipe.
3. self sealss pressure-bearing pipe nipple according to claim 2, which is characterized in that the fixing device include spacing collar and
Nut, between the elastic support member and the nut, the mandrel is equipped with for connecting the spacing collar
State the screw thread of nut.
4. self sealss pressure-bearing pipe nipple according to claim 2 or 3, which is characterized in that the elastic support member is configured to
Spring.
5. self sealss pressure-bearing pipe nipple according to any one of claim 1 to 3, which is characterized in that close on the mandrel
The end of oil pipe and it is described it is interior put between the part that the end of oil pipe forms cooperation and the inner sleeve and the housing it
Between be equipped with seal groove for accommodating sealing device.
6. self sealss pressure-bearing pipe nipple according to any one of claim 1 to 3, which is characterized in that close on the mandrel
The end of oil pipe is configured to circular conical surface with interior put on close to the part of the end of oil pipe formation cooperation.
7. self sealss pressure-bearing pipe nipple according to any one of claim 1 to 3, which is characterized in that the first connecting portion
Part is pin.
8. self sealss pressure-bearing pipe nipple according to any one of claim 1 to 3, which is characterized in that the second connecting portion
Part includes fixing axle and pin, and the fixing axle is arranged on the mandrel, the pin respectively with the inner sleeve and described solid
Dead axle connects.
9. self sealss pressure-bearing pipe nipple according to claim 8, which is characterized in that the fixing axle, which is configured with, to be sheathed on
The structure of sleeve and the axis being arranged vertically on the sleeve on the mandrel.
10. self sealss pressure-bearing pipe nipple according to any one of claim 1 to 3, which is characterized in that put on outside described and oil
The end of pipe connection is equipped with the screw thread for connected pipes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721527790.4U CN207715115U (en) | 2017-11-15 | 2017-11-15 | A kind of self sealss pressure-bearing pipe nipple |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721527790.4U CN207715115U (en) | 2017-11-15 | 2017-11-15 | A kind of self sealss pressure-bearing pipe nipple |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207715115U true CN207715115U (en) | 2018-08-10 |
Family
ID=63061666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721527790.4U Active CN207715115U (en) | 2017-11-15 | 2017-11-15 | A kind of self sealss pressure-bearing pipe nipple |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207715115U (en) |
-
2017
- 2017-11-15 CN CN201721527790.4U patent/CN207715115U/en active Active
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