CN203008883U - Steam injection oil production technique pipe column - Google Patents
Steam injection oil production technique pipe column Download PDFInfo
- Publication number
- CN203008883U CN203008883U CN 201320037457 CN201320037457U CN203008883U CN 203008883 U CN203008883 U CN 203008883U CN 201320037457 CN201320037457 CN 201320037457 CN 201320037457 U CN201320037457 U CN 201320037457U CN 203008883 U CN203008883 U CN 203008883U
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- oil pipe
- pipe
- oil
- heat insulating
- vacuum heat
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Abstract
The utility model discloses a steam injection oil production technique pipe column which comprises a two-layer oil pipe arranged in a straight well section, and a vacuum heat insulating pipe arranged in a horizontal well section. An interlayer of the oil pipe is a nitrogen heat insulating layer, the upper end of the oil pipe is connected with a hollow sucker rod of an oil well, and the lower end of the oil pipe is connected with the top end of the vacuum heat insulating pipe in a seal and butt-joint mode. An injection-production integration pump and a steam injection well washing check valve are installed on the oil pipe from top to bottom. An outer horn mouth is arranged at the tail end of the vacuum heat insulating pipe. Due to the fact the two-layer oil pipe with the nitrogen heat insulating layer is arranged on the straight well section to replace the vacuum heat insulating pipe, whole construction cost of the pipe column is reduced, and then cost of oil production is reduced. In addition, after steam injection is finished, a steam injection pipe column does not need to be lifted out of a rockshaft, and oil production operation can be carried out as long as the injection-production integration pump is used. Not only is labor strength of workers reduced, but also cold damage to the stratum is avoided.
Description
Technical field
The utility model relates to the heavy crude heat extraction technique device, specifically, relates to a kind of steam process production technology tubing string.
Background technology
In the face of the crisis that non-renewable energy resources reduce day by day, the exploitation of underground deep-layer heavy crude is more and more paid attention to by people.The characteristics of viscous crude are that oil density is high, viscosity is high, flow resistance is large.Viscous crude can flow at oil reservoir, and when flowing into pit shaft and upwards flowing, because ground temperature constantly reduces, viscosity of crude constantly rises, and flow resistance also strengthens thereupon, though adopt artificial lift also can't extraction ground.
At present, thickened oil recovery mode commonly used is the steam injection heating exploitation, injects a certain amount of steam to heavy oil tested layer that is:, reduces viscosity of thickened oil.In order to prevent that steam is injected into this process of oil reservoir from ground, heat loss must use a kind of heat energy that can reduce in the loss of wellbore section around the pit shaft on oil reservoir top, reaches complete stroke thermal insulating, improve the thick oil well bore flow velocity, and prevent the tubing string of later stage cold damage.
The shortcoming of existing steam injection oil recovery packing process pipe string is: 1, steam injecting pipe all uses the high vacuum insulation pipe, because the cost of high vacuum insulation pipe is higher, thereby has caused recovering the oil the expensive of production; 2, after gas injection is completed, first gas injection tube column is proposed in pit shaft, then carry out oil producing operation, so, not only workman's labour intensity is large, also can cause cold damage to the stratum.
The utility model content
The technical problems to be solved in the utility model is to overcome defects, provides a kind of cost low, can reduce the cost of production that recovers the oil, and can also reduce labor strength and the steam process production technology tubing string of avoiding the stratum is caused cold damage.
For addressing the above problem, the technical scheme that the utility model adopts is:
A kind of steam process production technology tubing string, it comprises the oil pipe that is arranged on the bilayer in the straight well section and the vacuum heat insulation tube that is arranged in net horizontal section, the interlayer of described oil pipe is the nitrogen-gas heat-insulating layer; The upper end of described oil pipe is connected with the hollow rod of oil well, and dock with the end sealing of vacuum heat insulation tube the lower end; On oil pipe, be equipped with from top to bottom to annotate and adopt integrated pump and steam injection well-cleaning check valve; The end of vacuum heat insulation tube is provided with outer horn mouth.
As improvement of the technical scheme: described oil pipe comprises inner tube and outer tube, and described nitrogen-gas heat-insulating layer is located between inner tube and outer tube.
As further improvement in the technical proposal: the bottom of described oil pipe evenly is provided with several tubing centrilizers to well head in the periphery of oil pipe.
Being shaped as of described tubing centrilizer is spherical, and namely contacted of tubing centrilizer and oil well casing inwall are sphere.
The beneficial effects of the utility model are, owing to having adopted technique scheme, compared with prior art, the utility model adopts the double layer oil pipe with the nitrogen-gas heat-insulating layer to substitute vacuum heat insulation tube in the straight well section, reduce the cost of tubing string integral body, and then reduced the cost of production that recovers the oil; In addition, after steam injection is completed, steam injection string need not be proposed in pit shaft, use notes to adopt integrated pump and can carry out oil producing operation, both reduce labor strength, also avoid the cold damage to the stratum.
The utility model is described in further detail below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is the structural representation of steam process production technology tubing string described in the utility model;
Fig. 2 is the cross section view of oil pipe described in the utility model.
The specific embodiment
With reference to Fig. 1, steam process production technology tubing string described in the utility model comprises the oil pipe 3 that is arranged on the bilayer in the straight well section and is arranged on the interior vacuum heat insulation tube 7 of net horizontal section that the interlayer of described oil pipe 3 is nitrogen-gas heat-insulating layer 33.The upper end of described oil pipe 3 is connected with the hollow rod of oil well 1, and dock with the end sealing of vacuum heat insulation tube 7 lower end.On oil pipe 3, be equipped with from top to bottom to annotate and adopt integrated pump 4 and steam injection well-cleaning check valve 6; The end of vacuum heat insulation tube 7 is provided with outer horn mouth 8.
With reference to Fig. 2, described oil pipe 3 comprises inner tube 32 and outer tube 31, is nitrogen-gas heat-insulating layer 33 between inner tube 32 and outer tube 31.
The bottom of described oil pipe 3 evenly is provided with several tubing centrilizers 2 to well head in the periphery of oil pipe 3, and the density of setting of tubing centrilizer 2 is that every three oil pipes arrange one.Being shaped as of described tubing centrilizer 2 is spherical, and namely tubing centrilizer 2 is sphere with contacted of oil well casing inwall.Tubing centrilizer is designed to spherical structure, can reduce contact point, reduces heat transmission, strengthens steam injection efficiency.
Claims (4)
1. steam process production technology tubing string is characterized in that: it comprises the oil pipe (3) that is arranged on the bilayer in the straight well section and is arranged on the interior vacuum heat insulation tube (7) of net horizontal section, and the interlayer of described oil pipe (3) is nitrogen-gas heat-insulating layer (33); The upper end of described oil pipe (3) is connected with the hollow rod (1) of oil well, and dock with the end sealing of vacuum heat insulation tube (7) lower end; On oil pipe (3), be equipped with from top to bottom to annotate and adopt integrated pump (4) and steam injection well-cleaning check valve (6); The end of vacuum heat insulation tube (7) is provided with outer horn mouth (8).
2. steam process production technology tubing string according to claim 1, it is characterized in that: described oil pipe (3) comprises inner tube (32) and outer tube (31), and described nitrogen-gas heat-insulating layer (33) is located between inner tube (32) and outer tube (31).
3. steam process production technology tubing string according to claim 1 and 2, it is characterized in that: the bottom of described oil pipe (3) evenly is provided with several tubing centrilizers (2) to well head in the periphery of oil pipe (3).
4. steam process production technology tubing string according to claim 3, it is characterized in that: being shaped as of described tubing centrilizer (2) is spherical, and namely tubing centrilizer (2) is sphere with contacted of oil well casing inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037457 CN203008883U (en) | 2013-01-13 | 2013-01-13 | Steam injection oil production technique pipe column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320037457 CN203008883U (en) | 2013-01-13 | 2013-01-13 | Steam injection oil production technique pipe column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203008883U true CN203008883U (en) | 2013-06-19 |
Family
ID=48600490
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320037457 Expired - Fee Related CN203008883U (en) | 2013-01-13 | 2013-01-13 | Steam injection oil production technique pipe column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203008883U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033141A (en) * | 2014-06-26 | 2014-09-10 | 中国石油化工股份有限公司 | Deep thickened oil segmental thermal insulating steam injection technique pipe column |
| CN104213888A (en) * | 2014-07-28 | 2014-12-17 | 中国石油化工股份有限公司 | Down-hole steam injection string of thick-oil thermal production well |
| CN104514535A (en) * | 2014-12-26 | 2015-04-15 | 中国石油天然气股份有限公司 | Same-well injection-production thermal oil production pipe column for vertical well and oil production method thereof |
| CN106978976A (en) * | 2016-01-19 | 2017-07-25 | 中国石油化工股份有限公司 | A kind of thick oil horizontal well note adopts integral process tube rod post and method |
-
2013
- 2013-01-13 CN CN 201320037457 patent/CN203008883U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033141A (en) * | 2014-06-26 | 2014-09-10 | 中国石油化工股份有限公司 | Deep thickened oil segmental thermal insulating steam injection technique pipe column |
| CN104213888A (en) * | 2014-07-28 | 2014-12-17 | 中国石油化工股份有限公司 | Down-hole steam injection string of thick-oil thermal production well |
| CN104213888B (en) * | 2014-07-28 | 2016-09-21 | 中国石油化工股份有限公司 | A kind of thick oil thermal extraction down-hole steam injection string |
| CN104514535A (en) * | 2014-12-26 | 2015-04-15 | 中国石油天然气股份有限公司 | Same-well injection-production thermal oil production pipe column for vertical well and oil production method thereof |
| CN106978976A (en) * | 2016-01-19 | 2017-07-25 | 中国石油化工股份有限公司 | A kind of thick oil horizontal well note adopts integral process tube rod post and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130619 Termination date: 20140113 |