CN208267821U - A kind of heavy crude heat extraction packer - Google Patents
A kind of heavy crude heat extraction packer Download PDFInfo
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- CN208267821U CN208267821U CN201820481972.0U CN201820481972U CN208267821U CN 208267821 U CN208267821 U CN 208267821U CN 201820481972 U CN201820481972 U CN 201820481972U CN 208267821 U CN208267821 U CN 208267821U
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Abstract
The utility model relates to heavy crude heat extractions to be drilled well technical field, in particular to a kind of heavy crude heat extraction packer.It is sequentially installed with that level-one sets packing element, level-one locking device, level-one igniting destructor, upper baffle ring, lower baffle ring, two-stage ignition destructor, second level locking device, second level set packing element on the central tube of the device from top to bottom, be respectively arranged with gunpowder in level-one igniting destructor and two-stage ignition destructor, in level-one igniting destructor gunpowder it is heated reach burning point after can explode and push upper piston uplink inside level-one igniting destructor.The utility model realizes the hot environment that can satisfy heavy crude heat extraction, and high temperature resistance is stablized, and seals segment length, sealing effect is good, the different payzones of horizontal well or straight well can effectively be insulated, significantly promote thick oil heat production steam injection efficiency, improve the ultimate recovery of heavy crude heat extraction.
Description
Technical field:
The utility model relates to heavy crude heat extractions to be drilled well technical field, in particular to a kind of heavy crude heat extraction packer.
Background technique:
Viscous crude is the valuable source of development of world economy, China to the research of heavy crude reservoir, exploitation and processing increasingly at
It is ripe, and form sizable exploitation scale.Currently, the characteristics of each elephant in the whole nation is directed to its own, passes through introduction, digestion, suction
Receipts and technological innovation, form production technique with their own characteristics, achieve new progress and breakthrough, are that the economic liftoff in China is made
Outstanding contributions are gone out.Viscous crude has the characteristics that than great, viscosity is high, light fraction is low, paraffin content is few and freezing point is not high.Due to thick
The viscosity of oil is high, hardly possible flowing, therefore cannot be exploited with conventional method.Recovery method is broadly divided into two major classes, one kind be it is cold adopt viscous crude,
Including the methods of no sand, Sand Production Cold Recovery, note flue gas, low-frequency pulse method, another kind of is thick oil thermal recovery method.Present each elephant
The overwhelming majority uses general gas injection, since horizontal segment is general using screen casing (slot, wrapping wire) in horizontal well in gas injection process
In 300~500m long, oil reservoir span is larger, and the reservoir heterogeneity along pit shaft length is stronger, at the same inside oily area other
The influence of injection-production well injection and recovery percent of reserves, formation pressure system changes, so that " channeling " universal between well, horizontal segment oil reservoir
It is serious to employ uneven, steam problem of locally advancing by leaps and bounds, affects the development degree and oily well capacity of oil reservoir.There is the above problem most
Main reasons is that not insulated effectively in pit shaft or between stratum and screen casing annular space, it can not achieve heavy crude heat extraction and be segmented
The purpose of well.The key of this problem is the absence of the external packer of pipe resistant to high temperature being suitable under heavy crude heat extraction environment, existing
External packer of pipe high temperature resistance is unstable, poor sealing effect, and sealing segment length is short, there is the risk for setting failure, Wu Faman
The requirement of sufficient heavy crude heat extraction.
Utility model content:
The technical problem to be solved by the present invention is to provide a kind of heavy crude heat extraction packers, and the arrangement achieves can
Meet the hot environment of heavy crude heat extraction, high temperature resistance is stablized, and segment length is sealed, and sealing effect is good, can be by horizontal well or straight
The different payzones of well are effectively insulated, and are significantly promoted thick oil heat production steam injection efficiency, are improved the ultimate recovery of heavy crude heat extraction.
It is unstable to overcome existing external packer of pipe high temperature resistance, poor sealing effect, sealing segment length is short, there is the wind for setting failure
Danger, is unable to satisfy the deficiency of the requirement of heavy crude heat extraction.
Technical solution adopted in the utility model is: a kind of heavy crude heat extraction packer, including central tube, on central tube
End is equipped with top connection, and central tube lower end is equipped with lower contact；Level-one is sequentially installed on central tube from top to bottom and sets packing element, level-one
Locking device, level-one igniting destructor, upper baffle ring, lower baffle ring, two-stage ignition destructor, second level locking device, second level are sat
Sealing cylinder is respectively arranged with gunpowder in level-one igniting destructor and two-stage ignition destructor, and level-one is lighted a fire gunpowder in destructor
It is heated reach burning point after can explode and push upper piston uplink inside level-one igniting destructor, upper piston uplink can push away
It moves level-one locking device uplink and level-one is made to set packing element and set, level-one locking device can set glue to the level-one for the state that sets
Cylinder is locked, in two-stage ignition destructor gunpowder it is heated reach burning point after can explode and push two-stage ignition explosion dress
Internal lower piston downlink is set, lower piston downlink can push second level locking device downlink and second level is made to set packing element and set, second level
Locking device can set packing element to the second level for the state that sets and lock.
The burning point of gunpowder is 250 DEG C in level-one igniting destructor and two-stage ignition destructor.
The beneficial effects of the utility model are: the utility model realizes the hot environment that can satisfy heavy crude heat extraction, it is resistance to
It having stable high-temperature performance, seals segment length, sealing effect is good, the different payzones of horizontal well or straight well can effectively be insulated,
Thick oil heat production steam injection efficiency is significantly promoted, the ultimate recovery of heavy crude heat extraction is improved.
Detailed description of the invention:
The utility model is described in more detail with reference to the accompanying drawings and detailed description.
Fig. 1 is the structural schematic diagram of the utility model.
Specific embodiment:
As shown in Figure 1, a kind of heavy crude heat extraction packer, including central tube 2,2 upper end of central tube are equipped with top connection 1, in
2 lower end of heart pipe is equipped with lower contact 11；Be sequentially installed with from top to bottom on central tube 2 level-one set packing element 3, level-one locking device 4,
Level-one igniting destructor 5, upper baffle ring 6, lower baffle ring 7, two-stage ignition destructor 8, second level locking device 9, second level set glue
Cylinder 10 is respectively arranged with gunpowder in level-one igniting destructor 5 and two-stage ignition destructor 8, and level-one is lighted a fire gunpowder in destructor 5
It is heated reach burning point after can explode and level-one is pushed to light a fire 5 inside upper piston uplink of destructor, upper piston uplink can
It pushes 4 uplink of level-one locking device and level-one is made to set packing element 3 and set, level-one locking device 4 can be to the level-one for the state that sets
Packing element 3 is set to be locked, in two-stage ignition destructor 8 gunpowder it is heated reach burning point after can explode and push secondary points
Hot 8 inside lower piston downlink of explosion unit, lower piston downlink can push 9 downlink of second level locking device and second level made to set packing element
10 set, and second level locking device 9 can set packing element 10 to the second level for the state that sets and lock.
The burning point of gunpowder is 250 DEG C in level-one igniting destructor 5 and two-stage ignition destructor 8.
In use, thick oil thermal extraction injects high-temperature steam, when environment temperature rises to 250 DEG C, gunpowder self-ignition point is hot
Fried, the thrust generated after explosion will push in level-one igniting 5 inside upper piston uplink of destructor and two-stage ignition destructor 8
Subordinate's piston downlink, is respectively acting on that level-one sets packing element 3 and second level is set on packing element 10 in this way, and level-one sets packing element 3 and two
Grade sets packing element 10 due to by thrust, and since the hardness of the effect packing element of high temperature is begun to decline, packing element become easy by
To extruding, it is finally reached and sets.The utility model, which is used, is arranged double packing element sealings in upper and lower ends, seals segment length, sealing effect
More preferably, safe and reliable.
It is understood that being merely to illustrate the utility model above with respect to the specific descriptions of the utility model and not being
It is limited to technical solution described in the utility model embodiment, those skilled in the art should understand that, it still can be with
It modifies to the utility model or equivalent replacement, to reach identical technical effect；Needs are used as long as meeting, all in this reality
Within novel protection scope.
Claims (2)
1. a kind of heavy crude heat extraction packer, including central tube (2), central tube (2) upper end is equipped with top connection (1), central tube (2)
Lower end is equipped with lower contact (11)；It is characterized by: being sequentially installed with level-one on central tube (2) from top to bottom sets packing element (3), one
Grade locking device (4), level-one igniting destructor (5), upper baffle ring (6), lower baffle ring (7), two-stage ignition destructor (8), two
Grade locking device (9), second level are set packing element (10), are filled in level-one igniting destructor (5) and two-stage ignition destructor (8)
Have a gunpowder, level-one light a fire destructor (5) interior gunpowder it is heated reach burning point after can explode and push level-one igniting explosion dress
(5) internal upper piston uplink is set, upper piston uplink can push level-one locking device (4) uplink and level-one is made to set packing element (3)
It sets, level-one locking device (4) can set packing element (3) to the level-one for the state that sets and lock, two-stage ignition destructor
(8) interior gunpowder it is heated reach burning point after can explode and push the internal lower piston downlink of two-stage ignition destructor (8), lower work
Plug downlink, which can push second level locking device (9) downlink and second level is made to set packing element (10), to be set, and second level locking device (9) can
Packing element (10) is set to the second level for the state that sets to lock.
2. heavy crude heat extraction packer described in accordance with the claim 1, it is characterised in that: the level-one lights a fire destructor (5)
Burning point with two-stage ignition destructor (8) interior gunpowder is 250 DEG C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820481972.0U CN208267821U (en) | 2018-04-08 | 2018-04-08 | A kind of heavy crude heat extraction packer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820481972.0U CN208267821U (en) | 2018-04-08 | 2018-04-08 | A kind of heavy crude heat extraction packer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208267821U true CN208267821U (en) | 2018-12-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820481972.0U Active CN208267821U (en) | 2018-04-08 | 2018-04-08 | A kind of heavy crude heat extraction packer |
Country Status (1)
| Country | Link |
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| CN (1) | CN208267821U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647882A (en) * | 2019-10-11 | 2021-04-13 | 中国石油化工股份有限公司 | Pipe column and method for unsealing through micro-explosion |
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
-
2018
- 2018-04-08 CN CN201820481972.0U patent/CN208267821U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112647882A (en) * | 2019-10-11 | 2021-04-13 | 中国石油化工股份有限公司 | Pipe column and method for unsealing through micro-explosion |
| CN117846534A (en) * | 2024-03-07 | 2024-04-09 | 中国石油大学(华东) | High-temperature-resistant heat-insulation packer for thickened oil heat |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20201113 Address after: No. 6, liupukang, Xicheng District, Beijing 100120 Patentee after: CHINA NATIONAL PETROLEUM Corp. Patentee after: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. Address before: 124010 Xinglongtai, Liaoning Province, oil street, No. 96, No. Patentee before: China National Petroleum Corporation Great Wall Drilling Engineering Co.,Ltd. |