CN207499813U - A kind of telescoping tube - Google Patents
A kind of telescoping tube Download PDFInfo
- Publication number
- CN207499813U CN207499813U CN201721486582.4U CN201721486582U CN207499813U CN 207499813 U CN207499813 U CN 207499813U CN 201721486582 U CN201721486582 U CN 201721486582U CN 207499813 U CN207499813 U CN 207499813U
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- CN
- China
- Prior art keywords
- seal box
- heat
- inner tube
- insulated
- insulated inner
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Abstract
A kind of telescoping tube, heat-insulated inner tube one end connects top connection, suit seal box outside heat-insulated inner tube, protrusion on the inside of seal box is bonded with heat-insulated inner tube outer rim, and pressure cap is equipped between the nearly top connection one end of seal box and heat-insulated inner tube, and pressure cap and seal box are threadedly coupled, interior sealing is equipped on the inside of seal box between heat-insulated inner tube, pressure cap inner end is installed with interior sealing external end impacts, and 5 opposite side of seal box is located at installation insulated exterior duct outside heat-insulated inner tube, is threadedly coupled between insulated exterior duct and seal box.The telescoping tube of the utility model; viscous crude and special thick oil are in recovery process; good heat insulation can be played in steam injection but also compensates well for linear expansion coefficient of the instlated tubular in steam injection process; so as to which packer be enable to position well; it ensure that steam injection quality; instlated tubular and casing annulus is made to reduce casing pressure raising, plays the role of protecting oil well.Compared with original tool, heat insulation is more preferable, sealed reliable, applicability are more extensive.
Description
Technical field
The utility model is related to oil field well high temperature gas-injection oil-production equipment more particularly to a kind of tubing strings.
Background technology
Viscous crude and special thick oil need steam injection in recovery process, and tubing string expanded by heating extends in steam injection process, can force
Packer displacement influences sealing effect or expansive force is applied to well head, can make well head pressure is excessively high to cause security risk.
Invention content
In order to eliminate tubing string in oil field well high temperature gas-injection oil-production operation process be heated elongation caused by prestressing force, this reality
A kind of telescoping tube is provided with novel.
The utility model technical solution used for the above purpose is：A kind of telescoping tube, heat-insulated 2 one end of inner tube connect
Connector 1, heat-insulated 2 outside suit seal box 5 of inner tube are connected, the protrusion of 5 inside of seal box is bonded with heat-insulated 2 outer rim of inner tube, seals
Pressure cap 3 is equipped between 5 nearly 1 one end of top connection of box and heat-insulated inner tube 2, pressure cap 3 and seal box 5 are threadedly coupled, 5 opposite side of seal box
Positioned at heat-insulated 2 outside installation insulated exterior duct 6 of inner tube, it is threadedly coupled between insulated exterior duct 6 and seal box 5.
Interior sealing 4,3 inner end of pressure cap and 4 external end impacts of interior sealing are equipped between 5 inside of seal box and heat-insulated inner tube 2
Installation.
The telescoping tube of the utility model, viscous crude and special thick oil can play good in recovery process in steam injection
Heat insulation can compensate well for linear expansion coefficient of the instlated tubular in steam injection process again, so as to which packer be enable to determine well
Position, ensure that steam injection quality, and instlated tubular and casing annulus is made to reduce casing pressure raising, plays the role of protecting oil well.With
Original tool compares, and heat insulation is more preferable, sealed reliable, applicability are more extensive.
Description of the drawings
Fig. 1 is the utility model flexible pipe structure figure.
In figure：1st, top connection, 2, heat-insulated inner tube, 3, pressure cap, 4, interior sealing, 5, seal box, 6, insulated exterior duct.
Specific embodiment
The flexible pipe structure of the utility model as shown in Figure 1, according to oil well connect the size of tubing string, main vapour pressure, well depth,
Corrosive substance contained by crude oil（Such as：Carbon dioxide, hydrogen sulfide）Etc. data can confirm the size of designed telescoping tube, heat-insulated system
Several data, the materials such as stainless steel or carbon steel may be selected in the difference of corrosive substance contained by based on crude.
Heat-insulated 2 one end of inner tube connects top connection 1, heat-insulated 2 outside suit seal box 5 of inner tube, the protrusion of 5 inside of seal box with
Heat-insulated 2 outer rim of inner tube fitting, is equipped with pressure cap 3, pressure cap 3 and seal box 5 between 5 nearly 1 one end of top connection of seal box and heat-insulated inner tube 2
It is threadedly coupled, is equipped with interior sealing 4 between 5 inside of seal box and heat-insulated inner tube 2,3 inner end of pressure cap is pacified with 4 external end impacts of interior sealing
Dress.5 opposite side of seal box is located at heat-insulated 2 outside installation insulated exterior duct 6 of inner tube, and screw thread connects between insulated exterior duct 6 and seal box 5
It connects.
Specific flow of installation：First seal box 5 is fixed on assembling pincers, then after interior sealing 4 is packed by left end, it will
Pressure cap 3 is threadedly coupled pre-pressing interior sealing 4 with seal box 5.Heat-insulated inner tube 2 is obtained after right end penetrates by seal box 5 with above connecing again
First 1 is connected.The component assembled is turned into direction again, insulated exterior duct 6 has been threadedly coupled by clamping top connection 1 with seal box 5
It is completed into rear i.e. kit assembling.
Claims (2)
1. a kind of telescoping tube, it is characterised in that：Heat-insulated inner tube（2）One end connects top connection（1）, heat-insulated inner tube（2）Outside suit
Seal box（5）, seal box（5）Protrusion and the heat-insulated inner tube of inside（2）Outer rim is bonded, seal box（5）Nearly top connection（1）One end with
Heat-insulated inner tube（2）Between be equipped with pressure cap（3）, pressure cap（3）And seal box（5）It is threadedly coupled, seal box（5）Opposite side is located at heat-insulated
Inner tube（2）Outside installation insulated exterior duct（6）, insulated exterior duct（6）With seal box（5）Between be threadedly coupled.
2. a kind of telescoping tube according to claim 1, it is characterised in that：The seal box（5）Inside and heat-insulated inner tube（2）
Between be equipped with interior sealing（4）, pressure cap（3）Inner end and interior sealing（4）External end impacts are installed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486582.4U CN207499813U (en) | 2017-11-09 | 2017-11-09 | A kind of telescoping tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721486582.4U CN207499813U (en) | 2017-11-09 | 2017-11-09 | A kind of telescoping tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207499813U true CN207499813U (en) | 2018-06-15 |
Family
ID=62503741
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721486582.4U Active CN207499813U (en) | 2017-11-09 | 2017-11-09 | A kind of telescoping tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207499813U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185424A (en) * | 2019-05-27 | 2019-08-30 | 淮安市井神钻采机具有限公司 | A kind of prestressing force multistage heat insulation compensator |
-
2017
- 2017-11-09 CN CN201721486582.4U patent/CN207499813U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110185424A (en) * | 2019-05-27 | 2019-08-30 | 淮安市井神钻采机具有限公司 | A kind of prestressing force multistage heat insulation compensator |
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| GR01 | Patent grant |