CN207110986U - A kind of down-hole string telescoping tube - Google Patents
A kind of down-hole string telescoping tube Download PDFInfo
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- CN207110986U CN207110986U CN201720884464.2U CN201720884464U CN207110986U CN 207110986 U CN207110986 U CN 207110986U CN 201720884464 U CN201720884464 U CN 201720884464U CN 207110986 U CN207110986 U CN 207110986U
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- compensation pipe
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- tube
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Abstract
The utility model provides a kind of down-hole string telescoping tube, including interior flexible compensation pipe, tube tee, external extension compensation pipe, the inner of interior flexible compensation pipe is connected with tube tee by that can destroy attachment structure, the one end of tube tee away from interior flexible compensation pipe is provided with the first position limiting structure for being used for limiting stroke, external extension compensation pipe the inner is connected by first position limiting structure with tube tee, the other end sets with interior flexible compensation pipe sleeve and is connected, the surplus capacity for being available for axial stretching is left between external extension compensation pipe and interior flexible compensation pipe, the difference of the cross-sectional area of the tube tee upper and lower end face can destroy attachment structure during being less than the predetermined value designed to ensure tubing string whereabouts will not premature degradation.Because the cross-sectional area difference of the upper and lower end face of tube tee is smaller, during phenomena such as running into overflow, can destroy attachment structure will not because being cut in advance by fluid pressure so that down-hole string telescoping tube be in can working condition, realize the compensation to down-hole string.
Description
Technical field
It the utility model is related to a kind of down-hole string telescoping tube.
Background technology
Oil field at home, it is necessary in oil well pipe and the various downhole tools of oil well bottom loading, comes real on stream
The diversified purposes of existing oil well tubing string.Packer is a kind of conventional downhole tool, flexible potted component, and whereby
Insulate annular space between various sizes tubing string and well and tubing string and completely cut off payzone, liquid protection sleeve pipe is produced with control, generally
Situation lower packet is all fixed on tubing string.Due to being influenceed by factors such as temperature and pressures, down-hole string is inevitably deposited
In flexible crawl, the using effect of the downhole tools such as packer can be thus directly influenced, serious meeting causes to insulate
The damage of the downhole tools such as device.At present in oilfield engineering by the way of telescoping tube is installed on down-hole string, to eliminate tubing string
Due to being produced flexible caused influence of wriggling by factors such as temperature and pressures, ensure that the normal of the downhole tools such as packer makes
With.
Authorization Notice No. is the U of CN 204627438, and the Chinese utility model patent that authorized announcement date is 2015.09.09 is public
A kind of oil well hydraulically extensible pipe is opened, the oil well includes upper center tube with hydraulically extensible pipe（I.e. interior flexible compensation pipe）, it is lower in
Heart pipe, gland（That is pressure ring）, pillar（That is external extension compensation pipe）, unlocking sleeve（That is ball seat）, the lower end of upper center tube and lower center
Pipe is socketed simultaneously to be fixed surely by steady pin, and the top of pillar connects with the lower thread of gland and with the steady pin company of being fixed surely
Connect, pillar is set in the outside of upper center tube and lower center tube and is in contact with outside it, and unlocking sleeve is arranged with lower center tube
And unlocking sleeve contacts with lower center tube inwall, the upper surface area of unlocking sleeve is more than its lower surface area, unlocking sleeve and lower center
Pipe is fixedly connected by shear pin.When needing oil well hydraulically extensible pipe to work, liquid is squeezed into from oil pipe, liquid enters
Enter upper center tube and lower center tube inner chamber, after the fluid pressure in tubing string reaches certain value, due to the top area of unlocking sleeve
Bigger than bottom area, pressure official post shear pin stress caused by this difference in areas is cut so that can between pillar and lower center tube
Moved freely with relative, realize the compensation to down-hole string.
Down-hole string is during going into the well, because the upper surface area of the unlocking sleeve of hydraulically extensible pipe is more than its lower surface
Area, when down-hole string does not reach the interval of design and construction, influenceed by factors such as overflows in well, the upper and lower end face of unlocking sleeve is deposited
Shear pin between pressure differential, lower center tube and unlocking sleeve can be cut in advance under fluid pressure effect caused by overflow
It is disconnected, hydraulically extensible pipe work ahead is caused so as to lose the compensating action to down-hole string.
Utility model content
The purpose of this utility model is that providing a kind of difference of the cross-sectional area of tube tee upper and lower end face is less than design
Predetermined value down-hole string telescoping tube, to solve to be influenceed by overflow factor in well present in prior art, interior flexible benefit
The shear pin repaid between pipe and tube tee can be cut in advance under fluid pressure effect caused by overflow, cause hydraulic pressure to stretch
Draw work ahead and the problem of lose the compensating action to down-hole string.
In order to solve the above-mentioned technical problem, the technical solution adopted in the utility model is：
A kind of down-hole string telescoping tube, including interior flexible compensation pipe, tube tee, external extension compensation pipe, interior flexible benefit
The inner for repaying pipe is connected with tube tee by that can destroy attachment structure, and the one end of tube tee away from interior flexible compensation pipe is provided with
For limiting the first position limiting structure of stroke, external extension compensates pipe the inner and connected by first position limiting structure and tube tee
Connect, the other end sets with interior flexible compensation pipe sleeve and is connected, external extension compensation pipe interior flexible compensation pipe between leave is available for axially stretch
The surplus capacity of contracting, the difference of the cross-sectional area of the tube tee upper and lower end face are less than the predetermined value of design to ensure that tubing string falls
During can destroy attachment structure will not premature degradation.
The difference of the cross-sectional area of above-mentioned tube tee upper and lower end face be less than design predetermined value with ensure tubing string fall
During can destroy attachment structure will not premature degradation down-hole string telescoping tube, the upper and lower end face of described tube tee
Cross-sectional area it is identical.
The difference of the cross-sectional area of above-mentioned tube tee upper and lower end face be less than design predetermined value with ensure tubing string fall
During can destroy attachment structure will not premature degradation down-hole string telescoping tube, it is described to destroy attachment structure to cut
Disconnected pin.
The difference of the cross-sectional area of above-mentioned tube tee upper and lower end face be less than design predetermined value with ensure tubing string fall
During can destroy attachment structure will not premature degradation down-hole string telescoping tube, the first described position limiting structure be and pipe
The lower limit pressure ring that shape ball seat lower end is fixedly connected.
The difference of the cross-sectional area of above-mentioned tube tee upper and lower end face be less than design predetermined value with ensure tubing string fall
During can destroy attachment structure will not premature degradation down-hole string telescoping tube, the upper and lower end face of described tube tee
For lozenges.
The difference of the cross-sectional area of above-mentioned tube tee upper and lower end face be less than design predetermined value with ensure tubing string fall
During can destroy attachment structure will not premature degradation, the cross-sectional area of tube tee upper and lower end face is identical, can destroy connection
Structure is cutting pin, the first described position limiting structure is the lower limit pressure ring or tubiform ball being fixedly connected with tube tee lower end
The down-hole string telescoping tube of lozenges is in the upper and lower end face of seat, one end that described interior flexible compensation pipe is connected with tube tee
Provided with the second position limiting structure, described external extension compensation pipe is provided with the 3rd position limiting structure close to one end of interior flexible compensation pipe.
One end that above-mentioned interior flexible compensation pipe is connected with tube tee is provided with the second position limiting structure, and external extension compensation pipe leans on
One end of flexible compensation pipe is provided with the down-hole string telescoping tube of the 3rd position limiting structure near, and the second described position limiting structure is limited
The outer shoulder in position, the 3rd described position limiting structure are the upper limit pressure ring being connected with external extension compensation pipe.
One end that above-mentioned interior flexible compensation pipe is connected with tube tee is provided with the second position limiting structure, and external extension compensation pipe leans on
One end of flexible compensation pipe is provided with the down-hole string telescoping tube of the 3rd position limiting structure near, and described interior flexible compensation pipe is remote
One end of tube tee is provided with the 4th position limiting structure.
Down-hole string of the above-mentioned interior one end of flexible compensation pipe away from tube tee provided with the 4th position limiting structure is used flexible
Pipe, the upper end of described interior flexible compensation pipe are also associated with top connection, and the 4th described position limiting structure is the end face of top connection.
The beneficial effects of the utility model are：Because the difference of the cross-sectional area of tube tee upper and lower end face is less than design
Predetermined value, tubing string during going into the well if phenomena such as running into overflow, the fluid pressure suffered by the upper and lower end face of tube tee
Again smaller than the predetermined value of setting, can destroy attachment structure will not treat to arrive work under tubing string difference because being cut in advance by fluid pressure
When making the depth in region, attachment structure can be destroyed by way of pitching is suppressed and is cut so that at down-hole string telescoping tube
In working condition, the compensation to down-hole string is realized.
Further, the cross-sectional area of the upper and lower end face of tube tee is identical, the pressure suffered by tube tee upper and lower end face
Difference is smaller.
Further, the upper and lower end face of spherical base is lozenges, increases the contact area of ball and tube tee, convenient to beat
Hydraulic pressure.
Further, one end that interior flexible compensation pipe is connected with tube tee is provided with the second position limiting structure, external extension compensation
Pipe is provided with the 3rd position limiting structure close to one end of interior flexible compensation pipe, and flexible compensation pipe and external extension compensation pipe stretches in setting
Scope, while facilitate and lift whole tubing string after the completion of oil extraction operation.
Further, the interior one end of flexible compensation pipe away from tube tee is provided with the 4th position limiting structure, convenient under tubing string
Apply pressure to lower end tubing string using the position limiting structure when being met obstructions during drop and break through tight point.
Brief description of the drawings
Fig. 1 is the structural representation of the embodiment 1 of the utility model down-hole string telescoping tube；
Fig. 2 is the structural representation of the embodiment 2 of the utility model down-hole string telescoping tube；
Fig. 3 is the structural representation of the embodiment 3 of the utility model down-hole string telescoping tube；
Fig. 4 is the structural representation of the embodiment 4 of the utility model down-hole string telescoping tube；
Fig. 5 is the structural representation of the embodiment 5 of the utility model down-hole string telescoping tube.
Respectively marked in figure：Flexible compensation pipe in 1.；2. attachment structure can be destroyed；3. tube tee；4. external extension compensation pipe；
5. the first position limiting structure；6. the second position limiting structure；7. the 3rd position limiting structure；8. the 4th position limiting structure；9. the first sealing ring；10.
Second sealing ring；11. the 3rd sealing ring.
Embodiment
The embodiment 1 of down-hole string telescoping tube of the present utility model is inside stretched as shown in figure 1, including interior flexible compensation pipe 1
Pipe 1 is repaid with one end that tubing string or pipe string portion are connected is upper end for contracting, the other end is lower end, the lower end of interior flexible compensation pipe 1 it is interior
Portion is connected with tube tee 3 by that can destroy attachment structure 2, in the embodiment, can destroy attachment structure 2 to cut pin, pipe
The upper and lower end face of shape ball seat 3 is lozenges and cross-sectional area is identical, and the is provided between interior flexible compensation pipe 1 and tube tee 3
Three sealing rings 11, the outside of the lower end of tube tee 3 are connected with external extension by the first position limiting structure 5 and compensate pipe 4, the embodiment
In, the first position limiting structure 5 is the lower limit pressure ring being connected with the external stability of the lower end of tube tee 3, and external extension is compensated under pipe 4
End face and the upper surface of lower limit pressure ring overlap joint, the top of external extension compensation pipe 4 and the lower slide of interior flexible compensation pipe 1 are arranged
Connection, leave be available for interior flexible compensation pipe 1 flexible between the bottom of external extension compensation pipe 4 and the bottom of interior flexible compensation pipe 1
Surplus capacity；The outside of the lower end of interior telescoping tube 1 is provided with the second position limiting structure 6, and in the embodiment, the second position limiting structure 6 is interior
The spacing outer shoulder of flexible compensation pipe lower end, the inside of the upper end of external extension compensation pipe are provided with the 3rd position limiting structure 7, the embodiment
In, the 3rd position limiting structure 7 is the upper limit pressure ring being connected with the upper end of external extension compensation pipe, upper limit pressure ring and interior flexible compensation
First sealing ring 9 is installed between pipe 1, the second sealing ring 10 is installed between upper limit pressure ring and external extension compensation pipe, inside stretched
The outside that truncate repays the upper end of pipe 1 is provided with the 4th position limiting structure 8, and in the embodiment, the 4th position limiting structure 8 is and interior flexible compensation
The lower surface of the top connection of the external connection of the upper end of pipe 1.
The down-hole string when in use, is connected to tubing string by down-hole string of the present utility model with telescoping tube with telescoping tube
Middle part, the upper end of interior flexible compensation pipe are connected with the top connection of tubing string, the lower end of external extension compensation pipe and the lower contact phase of tubing string
Even, during going into the well, when tubing string is hampered, upper limit pressure ring, external extension compensation pipe and tubing string stop moving down, and interior
Flexible compensation pipe, tube tee and lower limit pressure ring continue to move down, when the end face of the lower end of top connection sits on upper limit pressure
During the upper surface of ring, by tubing string pressurize the down-hole string telescoping tube below tubing string by tight point, now exist
Tubing string, spacing upper press ring in the presence of gravity below the down-hole string telescoping tube and external extension compensation pipe continue to moving down
Dynamic, when the lower surface of external extension compensation pipe is sitting in the upper surface of spacing lower pressure ring, the down-hole string is continued with flexible compensation pipe
Move down, after tubing string reaches precalculated position, hydraulic pressure is beaten to tubing string and realizes packer setting, steel ball is thrown into tubing string, works as steel
When ball falls on tube tee upper surface, continue to beat hydraulic pressure to tubing string, pin is cut when the hydraulic pressure difference of lower section on ball seat reaches
Pin cutting is cut when cutting pressure, tube tee and spacing lower pressure ring fall on the bottom of tubing string, when tubing string is by temperature and pressure
When the factors such as power influence flexible, interior flexible compensation pipe and external extension the compensation pipe relative telescopic of the down-hole string telescoping tube, from
And realize the flexible compensation to tubing string；When running into overflow phenomena during tubing string beats hydraulic pressure or tubing string is gone into the well, due to tubulose
The cross-sectional area of the upper and lower end face of ball seat is identical, and the pressure that the upper and lower end face of tube tee is born is identical, and cutting pin will not be by
Cut in advance, ensure that continuing for follow-up work.
The embodiment 2 of down-hole string telescoping tube of the present utility model with embodiment 1 as shown in Fig. 2 differ only in：
The 4th described position limiting structure is the spacing ring of the outside for the upper end for being connected to interior telescoping tube.
The embodiment 3 of down-hole string telescoping tube of the present utility model with embodiment 1 as shown in figure 3, differ only in：
The second described position limiting structure is the spacing ring of the outside for the lower end for being connected to interior flexible compensation pipe, the 3rd described position limiting structure
To be arranged on the shoulder of the inner side of the upper end of external extension compensation pipe.
The embodiment 4 of down-hole string telescoping tube of the present utility model with embodiment 1 as shown in figure 4, differ only in：
The upper and lower end face of described tube tee is horizontal plane.
The embodiment 5 of down-hole string telescoping tube of the present utility model with embodiment 1 as shown in figure 5, differ only in：
The first described position limiting structure is the cutting pin of the lower end for the lower end and external extension compensation pipe for being fixedly connected with tube tee.
The embodiment 6 of down-hole string telescoping tube of the present utility model, with differing only in for embodiment 1：Described can
Destruction attachment structure is destructible spot welding wlding.
The embodiment 7 of down-hole string telescoping tube of the present utility model, with differing only in for embodiment 1：Described pipe
The cross-sectional area of the upper surface of shape ball seat is more than the cross-sectional area of lower surface, due to caused by the cross section product moment of the upper and lower end face
Tube tee bears born pressure, no more than liquid pressure caused by the difference in level due to tube tee upper and lower end face
Power.
Claims (9)
1. a kind of down-hole string telescoping tube, including interior flexible compensation pipe, tube tee, external extension compensation pipe, interior flexible compensation
The inner of pipe is connected with tube tee by that can destroy attachment structure, and the one end of tube tee away from interior flexible compensation pipe, which is provided with, to be used
In limit stroke the first position limiting structure, external extension compensation pipe the inner be connected by first position limiting structure with tube tee,
The other end sets with interior flexible compensation pipe sleeve and is connected, and is left between external extension compensation pipe and interior flexible compensation pipe and is available for axial stretching
Surplus capacity, it is characterised in that：The difference of the cross-sectional area of the tube tee upper and lower end face is less than the predetermined value of design to ensure
Tubing string can destroy attachment structure during falling will not premature degradation.
2. down-hole string telescoping tube according to claim 1, it is characterised in that：The upper and lower end face of described tube tee
Cross-sectional area it is identical.
3. down-hole string telescoping tube according to claim 1, it is characterised in that：Described destroys attachment structure to cut
Disconnected pin.
4. down-hole string telescoping tube according to claim 1, it is characterised in that：The first described position limiting structure be and pipe
The lower limit pressure ring that shape ball seat lower end is fixedly connected.
5. down-hole string telescoping tube according to claim 1, it is characterised in that：The upper and lower end face of described tube tee
For lozenges.
6. the down-hole string telescoping tube according to any claim in claim 1 ~ 5, it is characterised in that：Described is interior
One end that flexible compensation pipe is connected with tube tee is provided with the second position limiting structure, and described external extension compensation pipe is close to interior flexible benefit
The one end for repaying pipe is provided with the 3rd position limiting structure.
7. down-hole string telescoping tube according to claim 6, it is characterised in that：The second described position limiting structure is spacing
Outer shoulder, the 3rd described position limiting structure are the upper limit pressure ring being connected with external extension compensation pipe.
8. down-hole string telescoping tube according to claim 6, it is characterised in that：Described interior flexible compensation pipe is away from pipe
One end of shape ball seat is provided with the 4th position limiting structure.
9. down-hole string telescoping tube according to claim 8, it is characterised in that：The upper end of described interior flexible compensation pipe
Top connection is also associated with, the 4th described position limiting structure is the end face of top connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884464.2U CN207110986U (en) | 2017-07-20 | 2017-07-20 | A kind of down-hole string telescoping tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720884464.2U CN207110986U (en) | 2017-07-20 | 2017-07-20 | A kind of down-hole string telescoping tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207110986U true CN207110986U (en) | 2018-03-16 |
Family
ID=61584803
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720884464.2U Active CN207110986U (en) | 2017-07-20 | 2017-07-20 | A kind of down-hole string telescoping tube |
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| CN (1) | CN207110986U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416835A (en) * | 2019-08-02 | 2019-11-05 | 重庆梦马致新科技有限公司 | A kind of male connector of cable wet joint |
| CN113669224A (en) * | 2021-09-07 | 2021-11-19 | 中国建筑第七工程局有限公司 | Concrete pumping device |
-
2017
- 2017-07-20 CN CN201720884464.2U patent/CN207110986U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110416835A (en) * | 2019-08-02 | 2019-11-05 | 重庆梦马致新科技有限公司 | A kind of male connector of cable wet joint |
| CN113669224A (en) * | 2021-09-07 | 2021-11-19 | 中国建筑第七工程局有限公司 | Concrete pumping device |
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