CN203175463U - Steam flooding thermal compensation type sealer - Google Patents
Steam flooding thermal compensation type sealer Download PDFInfo
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- CN203175463U CN203175463U CN 201320042915 CN201320042915U CN203175463U CN 203175463 U CN203175463 U CN 203175463U CN 201320042915 CN201320042915 CN 201320042915 CN 201320042915 U CN201320042915 U CN 201320042915U CN 203175463 U CN203175463 U CN 203175463U
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- tube
- outer tube
- cap
- thermal compensation
- steam flooding
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Abstract
The utility model discloses a steam flooding thermal compensation type sealer. The steam flooding thermal compensation type sealer comprises an upper connector, a central pipe and a lower connecting pipe. The upper end of the central pipe is connected with the upper connector, an outer pipe is sleeved on the central pipe, the upper end of the outer pipe is connected with a pressing cap, the pressing cap is sleeved on the central pipe, an extension body is connected to the outer pipe in a sleeved mode, the exterior of the extension body is connected with a sealing copper sleeve, and an expansion cavity is formed between the extension body and the outer pipe. The upper end of the lower connecting pipe is connected with the central pipe, the lower end of the lower connecting pipe is connected with a lower connector, a lower cap is sleeved on the lower connecting pipe, the upper end of the lower cap is connected with a sealing sleeve which is connected with the lower end of the outer pipe, the lower end of the outer pipe is connected to the lower connecting pipe, and a pressure cavity is formed between the lower cap and the lower connecting pipe. The steam flooding thermal compensation type sealer can release the thermal elongation of a gas injection tubular column with steam injected, and ensures smooth conduct of fishing operation and testing operation.
Description
Technical field
The utility model is relevant for a kind of sealer, especially relevant for a kind of steam flooding thermal compensation formula sealer that is applicable to the heavy crude heat extraction gas injection well.
Background technology
At present, the Liaohe Oil Field viscous crude is owing to its colloid, bitumen content are very high, and is mobile poor, thereby the exploitation difficulty is bigger, and be in the steam soak mode later stage, and be badly in need of the conversion development scheme at present in order to reach the stable yields effect, neat 40 blocks in Liaohe Oil Field have been converted to the steam drive development mode.
In the existing steam drive development mode, steam injection tubing string in down-hole is mainly by connecting each gas injection layer of sealer packing thereon, according to actual needs each layer of down-hole taked layered gas-injection.Existing sealer is after packing, and its outer wall closely is sticked on internal surface of sleeve pipe, and the central tube of sealer is fixedly connected on the steam injection tubing string.Under long vapours effect, can there be the situation of temperature distortion in the steam injection tubing string, owing to do not have any relatively moving between steam injection tubing string and the sealer, after tubing string between two sealers is subjected to thermal stretching, its elongation can't be released, and cause drilling pipe bending, and cause the tester in later stage can not descend assigned address, influence carrying out smoothly of pulling operation and test jobs.
Therefore, be necessary to provide a kind of novel sealer, overcome above-mentioned defective.
The utility model content
The purpose of this utility model provides a kind of steam flooding thermal compensation formula sealer, and it can discharge the thermal stretching amount after the steam injection of gas injection tubing string, guarantees carrying out smoothly of pulling operation and test jobs.
Above-mentioned purpose of the present utility model can adopt following technical proposal to realize:
The utility model provides a kind of steam flooding thermal compensation formula sealer, and described steam flooding thermal compensation formula sealer comprises:
Top connection;
Central tube, its upper end links to each other with described top connection, be arranged with outer tube on the described central tube, the upper end of described outer tube is connected with pressure cap, described pressure cap is set on the described central tube, be socketed with expansion body on the described outer tube, described expansion body be externally connected to the sealing copper sheathing, be formed with expansion chamber between described expansion body and the described outer tube;
Following tube connector, its upper end links to each other with described central tube, its lower end is connected with lower contact, be arranged with down by cap on the tube connector under described, be connected with sealing shroud by the upper end of cap under described, described sealing shroud links to each other with the lower end of described outer tube, and the lower end of described outer tube is connected on the described down tube connector, is formed with pressure chamber by cap with described descending between the tube connector down described.
In preferred embodiment, described sealing shroud is connected the lower end of described outer tube by shear pin.
In preferred embodiment, be arranged with spacing ring on the described following tube connector, described spacing ring is positioned at described pressure chamber.
In preferred embodiment, the lower end of described outer tube is fixed on the described tube connector down by spacing lock dog, and described sealing shroud contact is on described spacing lock dog.
In preferred embodiment, described outer tube is provided with the pressure release pin, and described pressure release pin is positioned at the described top of tube connector down.
In preferred embodiment, be provided with a plurality of carbon seal rings between the upper end of described outer tube and the described central tube.
In preferred embodiment, between described outer tube and the described down tube connector, between described outer tube and the described sealing shroud, described sealing shroud with described down by between the cap and describedly descend by cap and describedly be respectively equipped with a plurality of sealing rings between the tube connector down.
Characteristics and the advantage of steam flooding thermal compensation formula sealer of the present utility model are: this steam flooding thermal compensation formula sealer is behind down-hole Seal Oil cover annular space, when there is the thermal stretching amount in the gas injection tubing string, the outer tube of this steam flooding thermal compensation formula sealer central tube relatively carries out axial displacement, with compensation gas injection tubing string because the problem of the drilling pipe bending that temperature distortion causes has been guaranteed carrying out smoothly of follow-up pulling operation and test jobs.
Description of drawings
In order to be illustrated more clearly in the technical scheme among the utility model embodiment, the accompanying drawing of required use is done to introduce simply in will describing embodiment below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the structural representation of steam flooding thermal compensation formula sealer of the present utility model.
The specific embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that obtains under the creative work prerequisite, all belong to the scope of the utility model protection.
As shown in Figure 1, the utility model provides a kind of steam flooding thermal compensation formula sealer, it comprises top connection 1, central tube 2 and following tube connector 3, wherein: the upper end of central tube 2 links to each other with described top connection 1, be arranged with outer tube 21 on the described central tube 2, the upper end of described outer tube 21 is connected with pressure cap 22, described pressure cap 22 is set on the described central tube 2, be socketed with expansion body 23 on the described outer tube 21, being externally connected to of described expansion body 23 seals copper sheathing 24, is formed with expansion chamber 25 between described expansion body 23 and the described outer tube 21; The upper end of following tube connector 3 links to each other with described central tube 2, its lower end is connected with lower contact 4, be arranged with down by cap 31 on the tube connector 3 under described, be connected with sealing shroud 32 by the upper end of cap 31 under described, described sealing shroud 32 links to each other with the lower end of described outer tube 21, the lower end of described outer tube 21 is connected on the described down tube connector 3, is formed with pressure chamber 33 by cap 31 with described descending between the tube connector 3 down described.
Specifically be, central tube 2 is the cylinder bodily form substantially, and it has through hole 211, and the upper end outside screw of central tube 2 is connected with top connection 1, and its lower end outside screw is connected with down tube connector 3, and the lower end outside screw of following tube connector 3 is connected with lower contact 4.
The two ends of expansion body 23 are welded to connect on the outer wall of outer tube 21, are placed with the expansion medicament in the expansion chamber 25 that forms between expansion body 23 and outer tube 21, and the expansion medicament can be expanded the volume of expansion chamber 25 behind expanded by heating, make expansion body 23 radially outward mobile; In the annular groove that expansion body 23 external surfaces form, be connected with sealing copper sheathing 24, establish by baffle ring 241 fixing cards the upper end of sealing copper sheathing 24, baffle ring 241 is threaded on the outer wall of outer tube 21, in the process that expansion body 23 radially outward expands, expansion body 23 can drive sealing copper sheathing 24 and together radially outward expand, and is sticked on internal surface of sleeve pipe until sealing copper sheathing 24.
Be set in down on the tube connector 3 by cap 31 down, the ring side is sticked on the outer wall of following tube connector 3 in its lower end, its upper end inside thread is connected with sealing shroud 32, in the utility model, sealing shroud 32 is connected the lower end of outer tube 21 by shear pin 321, simultaneously, sealing shroud 32 plays presses the purpose establish the spacing lock dog 212 in outer tube 21 lower ends, prevents that spacing lock dog 212 from deviating from outer tube 21.In the pressure chamber 33 that is formed by cap 31 and following tube connector 3 down, be placed with the expansion medicament, this expansion medicament is behind expanded by heating, can be full of whole pressure chamber 33, pressure in the pressure chamber 33 increases, at this moment, down by under the pressure effect of cap 31 in pressure chamber 33, descend tube connector 3 to move down vertically relatively, being connected down will be with down by cap 31 1 coaxial moving down by the sealing shroud 32 of cap 31 upper ends, and the shear pin 321 between sealing shroud 32 and outer tube 21 is cut off.
When carrying out the down-hole sealing operation, at first, according to the quantity of down-hole gas injection layer, connect a plurality of steam flooding thermal compensation formula sealers at the steam injection tubing string, this steam flooding thermal compensation formula sealer is separated from each other each gas injection layer in order to packing oil jacket annular space, prevents phase mutual interference between each layer of down-hole; When steam injection in the gas injection tubing string, vapours flows into from the through hole 211 of central tube 2, at this moment, be positioned at the expansion medicament expanded by heating of expansion chamber 25, expansion chamber 25 is radially outward expanded, thus contact expansion body 23, and it is radially outward mobile to make expansion body 23 drive sealing copper sheathing 24, on sealing copper sheathing 24 closely is sticked inwall at down-hole casing, finish the downhole packing operation.
When the temperature distortion of down-hole gas injection tubing string, down by under the thermal expansion of cap 31 expansion medicament in pressure chamber 33, relative central tube 2 is axially moved down, to together move down with the sealing shroud 32 that is linked to each other by cap 31 down, this moment, shear pin 321 was cut off, and sealing shroud 32 breaks away from outer tube 21, at this moment, spacing lock dog 212 no longer is subjected to compressing of sealing shroud 32 and descends certainly to deviate from the tube connector 3, and outer tube 21 moves axially relative central tube 2, thereby has effectively compensated the elongation of gas injection tubing string expanded by heating.
Steam flooding thermal compensation formula sealer of the present utility model, behind down-hole Seal Oil cover annular space, when there is the thermal stretching amount in the gas injection tubing string, the outer tube 21 of this steam flooding thermal compensation formula sealer central tube 2 relatively carries out axial displacement, with compensation gas injection tubing string because the problem of the drilling pipe bending that temperature distortion causes has been guaranteed carrying out smoothly of follow-up pulling operation and test jobs.
According to an embodiment of the present utility model, be arranged with spacing ring 34 on the described following tube connector 3, described spacing ring 34 is positioned at described pressure chamber 33.Spacing ring 34 plays the effect of setting upright down by cap 31, makes down by cap 31 coaxial with central tube 2 all the time in axially movable process.
According to an embodiment of the present utility model, described outer tube 21 is provided with pressure release pin 213, and described pressure release pin 213 is positioned at the described top of tube connector 3 down.When this steam flooding thermal compensation formula sealer is carried out deblocking, on carry central tube 2, this at present tube connector 3 relative outer tubes 21 axially move up, when tube connector 3 moves to the position of pressure release pin 213 instantly, carry central tube 2 in the continuation, pressure release pin 213 is cut off, expansion medicament in this moment expansion chamber 25 will be released from the position of the pressure release pin 213 of outer tube 21, at this moment, expansion chamber 25 internal pressures reduce, expansion body 23 radially inwardly bounces back, and sealing copper sheathing 24 no longer is sticked on the sleeve pipe inside wall, realizes the deblocking operation of steam flooding thermal compensation formula sealer of the present utility model.
According to an embodiment of the present utility model, between described outer tube 21 and the described down tube connector 3, between described outer tube 21 and the described sealing shroud 32, described sealing shroud 32 with described down by between the cap 31 and describedly descend by cap 31 and describedly be respectively equipped with a plurality of sealing rings 5 between the tube connector 3 down.Slit between slit, outer tube 21 and the sealing shroud 32 that those sealing rings 5 are used between sealed outer pipe 21 and the following tube connector 3, sealing shroud 32 and following by the slit between the cap 31 and down by the slit between cap 31 and the following tube connector 3, effectively improve the sealing performance of steam flooding thermal compensation formula sealer of the present utility model, prevent from injecting the situation generation that steam leaks outside.
The above only is several embodiment of the present utility model, and those skilled in the art can carry out various changes or modification to the utility model embodiment according to the disclosed content of application documents and not break away from spirit and scope of the present utility model.
Claims (7)
1. a steam flooding thermal compensation formula sealer is characterized in that, described steam flooding thermal compensation formula sealer comprises:
Top connection;
Central tube, its upper end links to each other with described top connection, be arranged with outer tube on the described central tube, the upper end of described outer tube is connected with pressure cap, described pressure cap is set on the described central tube, be socketed with expansion body on the described outer tube, described expansion body be externally connected to the sealing copper sheathing, be formed with expansion chamber between described expansion body and the described outer tube;
Following tube connector, its upper end links to each other with described central tube, its lower end is connected with lower contact, be arranged with down by cap on the tube connector under described, be connected with sealing shroud by the upper end of cap under described, described sealing shroud links to each other with the lower end of described outer tube, and the lower end of described outer tube is connected on the described down tube connector, is formed with pressure chamber by cap with described descending between the tube connector down described.
2. steam flooding thermal compensation formula sealer as claimed in claim 1 is characterized in that described sealing shroud is connected the lower end of described outer tube by shear pin.
3. steam flooding thermal compensation formula sealer as claimed in claim 1 is characterized in that, is arranged with spacing ring on the described following tube connector, and described spacing ring is positioned at described pressure chamber.
4. steam flooding thermal compensation formula sealer as claimed in claim 1 is characterized in that, the lower end of described outer tube is fixed on the described tube connector down by spacing lock dog, and described sealing shroud contact is on described spacing lock dog.
5. steam flooding thermal compensation formula sealer as claimed in claim 1 is characterized in that described outer tube is provided with the pressure release pin, and described pressure release pin is positioned at the described top of tube connector down.
6. steam flooding thermal compensation formula sealer as claimed in claim 1 is characterized in that, is provided with a plurality of carbon seal rings between the upper end of described outer tube and the described central tube.
7. steam flooding thermal compensation formula sealer as claimed in claim 1, it is characterized in that, between described outer tube and the described down tube connector, between described outer tube and the described sealing shroud, described sealing shroud with described down by between the cap and describedly descend by cap and describedly be respectively equipped with a plurality of sealing rings between the tube connector down.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320042915 CN203175463U (en) | 2013-01-25 | 2013-01-25 | Steam flooding thermal compensation type sealer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320042915 CN203175463U (en) | 2013-01-25 | 2013-01-25 | Steam flooding thermal compensation type sealer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203175463U true CN203175463U (en) | 2013-09-04 |
Family
ID=49072178
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320042915 Expired - Fee Related CN203175463U (en) | 2013-01-25 | 2013-01-25 | Steam flooding thermal compensation type sealer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203175463U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233237A (en) * | 2021-12-31 | 2022-03-25 | 盘锦博程实业有限公司 | Laminated expanding type temperature control sealing device |
-
2013
- 2013-01-25 CN CN 201320042915 patent/CN203175463U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114233237A (en) * | 2021-12-31 | 2022-03-25 | 盘锦博程实业有限公司 | Laminated expanding type temperature control sealing device |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 Termination date: 20220125 |