CN203452760U - Steam injection sealing inserting tube - Google Patents
Steam injection sealing inserting tube Download PDFInfo
- Publication number
- CN203452760U CN203452760U CN201320430562.0U CN201320430562U CN203452760U CN 203452760 U CN203452760 U CN 203452760U CN 201320430562 U CN201320430562 U CN 201320430562U CN 203452760 U CN203452760 U CN 203452760U
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- CN
- China
- Prior art keywords
- sealing
- steam injection
- inserting tube
- intubate
- tube body
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model provides a steam injection sealing inserting tube. Arc-shaped wiper blocks are connected to the exterior of the back section of an inserting tube body, a sealing copper ring and a rubber sealing ring are connected to the exterior of the front section of the inserting tube body, and a wedge-shaped sealing sleeve is arranged outside the middle section of the inserting tube body. A spring is connected between the wedge-shaped sealing sleeve and a boss on the inserting tube body, the inserting tube body is fixedly connected with the arc-shaped wiper blocks, grooves which are in embedded connection with the sealing copper ring and the rubber sealing ring are formed in the inserting tube body, the number of the arc-shaped wiper blocks is four, and the rubber sealing ring is a fluororubber sealing ring. The steam injection sealing inserting tube has the advantages of being simple in structure, high in strength, convenient to use, good in sealing performance, capable of effectively preventing steam from being leaked and preventing sleeve water from entering stratum and the like.
Description
Technical field
The utility model relate to oil offer standby, a kind of steam injection sealing intubate that in particularly thickened oil recovery process, steam injection is used.
Background technology
The difficulty of deep layer super-heavy oil deposit exploitation at present, main cause is deeply buried reservoir, and viscosity of crude is high, causes steam injection pressure high, and shaft bottom quality of steam declines, and cannot meet the requirement of thermal recovery.Viscosity of crude is to the sensitiveness of temperature strong (5 ℃ of the every reductions of temperature, viscosity of crude raises nearly a times) simultaneously, and lifting process Crude Oil viscosity changes greatly, causes wellbore lift difficulty.Adopt horizontal well to coordinate notes to adopt integrated pipe column for this reason and develop, improve steam injection quality, while adopting omnidistance heat insulation mode to produce, can effectively utilize stratum heat, reduce formation fluid heat and must scatter and disappear in flow string.Because full well section tubing string load is large, adopt heat-sensitive packer to divide two-part, top tubing string is connected employing intubation way with bottom tubing string, top tubing string inserts in packer by intubate, with bottom tubing string UNICOM, form steam injection oil recovery passage, so the sealing of intubate is particularly important.
Summary of the invention
It is a kind of simple in structure that the purpose of this utility model is to provide, and intensity is high, convenient use, and good seal performance, can effectively prevent that steam leakage, sleeve water from entering the steam injection sealing intubate of the problems such as stratum.
The purpose of this utility model can realize by following technical solution:
The back segment of the intubate body of this steam injection sealing intubate is connected with arc wiper block outward, and leading portion is connected with sealing copper band and rubber seal outward, and interlude has wedge-type seal cover outward.
The purpose of this utility model also can realize by following technical solution:
Between described wedge-type seal cover and the boss on intubate body, be connected with spring; Described intubate body is fixedly connected with arc wiper block; Described intubate body is provided with and seals copper band, rubber seal and embed the groove being connected; Described arc wiper block is 4; Described rubber seal is viton seal ring.
During thick oil heat production steam injection, 4 arc centralizers of steam injection sealing intubate assembling, placed in the middle in assurance intubate pit shaft, insert in packer and install smoothly.Sealing copper band and viton seal ring due to thermal expansion squeeze packer inwall, play sealing function when steam injection.Steam injection tubing string when steam injection because thermal expansion meeting is extended; intubate can continue to go deep in packer; sealing copper band and viton seal ring are subjected to displacement, and now spring can produce compression, and wedge-type seal cover can be squeezed on packer; if gap is large; wedge-type seal cover can a part be clamp-oned in packer, produces dual sealing functions, protective casing, minimizing well casing heat waste; improve steam injection efficiency, guarantee that high-temperature steam safely, is effectively injected into object oil reservoir.Simple in structure, novel in design, it is applied and has more significant Social benefit and economic benefit.
This steam injection sealed tube rod structure is simple, intensity is high, and arc wiper block adopts and is welded to connect intubate body, can be supported on sleeve pipe tube wall and make intubate effectively placed in the middle, accurately inserts; Intubate body leading portion insertion end adopts large chamfering, is conducive to guiding and inserts packer; The sealing of intubate and packer is guaranteed in the double seal of wedge-type seal cover and sealing copper band, viton seal ring, can effectively prevent that steam leakage, sleeve water from entering the problems such as stratum.
Accompanying drawing explanation
Fig. 1 is the structural representation of the utility model embodiment.
In figure: 1-intubate body, 2-arc wiper block, 3-spring, 4-wedge-type seal cover, 5-sealing copper band, 6-rubber seal.
the specific embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail.
The back segment of intubate body 1 is connected with 4 arc wiper blocks 2 outward, leading portion is connected with sealing copper band 5 and rubber seal 6 outward, interlude has wedge-type seal cover 4 outward, between described wedge-type seal cover 4 and the boss on intubate body 1, be connected with spring 3, described intubate body 1 is fixedly connected with arc wiper block 2, described intubate body 1 is provided with sealing copper band 5, rubber seal 6 and embeds the groove being connected, and described rubber seal 6 is viton seal ring.Wedge-type seal overlap 4 when stressed at intubate body 1 surface sliding.
Claims (6)
1. a steam injection sealing intubate, is characterized in that the back segment of intubate body (1) is connected with arc wiper block (2) outward, and leading portion is connected with sealing copper band (5) and rubber seal (6) outward, and interlude has wedge-type seal cover (4) outward.
2. a kind of steam injection sealing intubate as claimed in claim 1, is characterized in that being connected with spring (3) between described wedge-type seal cover (4) and the boss on intubate body (1).
3. a kind of steam injection sealing intubate as claimed in claim 1, is characterized in that described intubate body (1) is fixedly connected with arc wiper block (2).
4. a kind of steam injection sealing intubate as claimed in claim 1, it is characterized in that described intubate body (1) be provided with seal copper band (5), rubber seal (6) embeds the groove being connected.
5. a kind of steam injection sealing intubate as claimed in claim 1, is characterized in that described arc wiper block (2) is 4.
6. a kind of steam injection sealing intubate as claimed in claim 1, is characterized in that described rubber seal (6) is for viton seal ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430562.0U CN203452760U (en) | 2013-07-19 | 2013-07-19 | Steam injection sealing inserting tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320430562.0U CN203452760U (en) | 2013-07-19 | 2013-07-19 | Steam injection sealing inserting tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203452760U true CN203452760U (en) | 2014-02-26 |
Family
ID=50132644
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320430562.0U Expired - Fee Related CN203452760U (en) | 2013-07-19 | 2013-07-19 | Steam injection sealing inserting tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203452760U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295277A (en) * | 2013-07-19 | 2015-01-21 | 中国石油化工股份有限公司 | Steam injection sealing insertion pipe |
-
2013
- 2013-07-19 CN CN201320430562.0U patent/CN203452760U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104295277A (en) * | 2013-07-19 | 2015-01-21 | 中国石油化工股份有限公司 | Steam injection sealing insertion pipe |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140226 Termination date: 20150719 |
|
| EXPY | Termination of patent right or utility model |