CN205858203U - A kind of two-tube conversion equipment of steam injection list - Google Patents
A kind of two-tube conversion equipment of steam injection list Download PDFInfo
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- CN205858203U CN205858203U CN201620572058.8U CN201620572058U CN205858203U CN 205858203 U CN205858203 U CN 205858203U CN 201620572058 U CN201620572058 U CN 201620572058U CN 205858203 U CN205858203 U CN 205858203U
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- tube
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- steam injection
- pipe
- matching device
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Abstract
This utility model provides a kind of two-tube conversion equipment of steam injection list, belongs to Development of Viscous Crude Oil field.This device includes steam injection pipe in two-tube hangoff receptacle, two-tube steam-matching device, big extra steam injection pipe and trumpet；One end of described two-tube hangoff receptacle is two-tube hangoff receptacle top connection, it is connected with top steam injection string, the other end is two-tube hangoff receptacle lower contact, the outside of two-tube hangoff receptacle lower contact is standard oil pipe pin thread, it is connected by one end of this standard oil pipe pin thread with big extra steam injection pipe, the inside of two-tube hangoff receptacle lower contact is provided with female thread, is connected by one end of this female thread with two-tube steam-matching device, and the other end of described two-tube steam-matching device is connected with one end of steam injection pipe in trumpet by standard oil pipe pin thread；The diameter of described big extra steam injection pipe is more than the diameter of small size interior steam injection pipe；Described two-tube steam-matching device has outer tube and joins steam vent and inner tube joins steam vent.
Description
Technical field
This utility model belongs to Development of Viscous Crude Oil field, is specifically related to a kind of two-tube conversion equipment of steam injection list, is used for
Single tube steam injection makes the two-tube conversion of list during two-tube steam injection into.
Background technology
The major way of horizontal well Double-pipe gas-injection is for enter two steam injection strings under well head at present, and horizontal wellbore is injected heat
Steam thus carry out Simulation on whole pay zones, two steam injection strings can be concentric double pipe, i.e. one inner tube and an outer pipe type structure；Also
Can be eccentric two-tube, all in pit shaft, there is not the structure of inner and outer pipes in i.e. two independent tubing strings.When using, above two is two-tube
During steam injection mode, in the vertical bore and horizontal wellbore of whole horizontal well, all can there be two endowels, relative for vertical bore
Deeper horizontal well, carries out Double-pipe gas-injection waste the cost of tubing string material and running string, simultaneously with entering two endowels the most at present
Eccentric Double-pipe gas-injection is equal to the contact area expanding vapours with o exterior medium, and thermal losses is the biggest.
Utility model content
The purpose of this utility model is to solve a difficult problem present in above-mentioned prior art, it is provided that a kind of steam injection list is two-tube
Conversion equipment, connects single steam injection pipe on the two-tube conversion equipment of steam injection list, permissible under the two-tube conversion equipment of steam injection list
Connecting concentric two-tube, this two-tube conversion equipment of steam injection list is lowered into above the heel end of horizontal wellbore, thus realizes vertical bore
Interior uses a steam injection pipe to reach the purpose of two-tube steam injection, saves one section of steam injection string, reduce vapours at peupendicular hole
The heat loss on the way of section.
This utility model is achieved through the following technical solutions:
A kind of two-tube conversion equipment of steam injection list, including two-tube hangoff receptacle, two-tube steam-matching device, big extra steam injection pipe and little
Steam injection pipe in number；
One end of described two-tube hangoff receptacle is two-tube hangoff receptacle top connection, is connected with top steam injection string, and the other end is double
Pipe hangoff receptacle lower contact, the outside of two-tube hangoff receptacle lower contact is standard oil pipe pin thread, by this standard oil pipe pin thread and large size
One end of outer steam injection pipe connects, and the inside of two-tube hangoff receptacle lower contact is provided with female thread, is filled with two-tube vapour of joining by this female thread
The one end put connects, and the other end of described two-tube steam-matching device is by standard oil pipe pin thread with one end of steam injection pipe in trumpet even
Connect；
The diameter of described big extra steam injection pipe is more than the diameter of small size interior steam injection pipe；
Described two-tube steam-matching device has outer tube and joins steam vent and inner tube joins steam vent.
In described big extra steam injection pipe and trumpet, steam injection pipe is arranged concentrically.
One end of described two-tube steam-matching device is provided with external screw thread, is connected with the female thread of two-tube hangoff receptacle lower contact；Institute
Stating and have the central through hole being coaxial therewith line on two-tube steam-matching device, an end face of central through hole is positioned under two-tube hangoff receptacle and connects
In head, another end face is positioned in the inner chamber of trumpet steam injection pipe, forms said inner tube and joins steam vent；
Having described outer tube on the middle part tube wall of described two-tube steam-matching device and join steam vent, described outer tube is joined steam vent and is positioned at greatly
In the inner chamber of extra steam injection pipe.
It is uniform on the circumference of the tube wall of two-tube steam-matching device that steam vent joined by described outer tube.
Described two-tube hangoff receptacle top connection is standard oil pipe box, is connected with the pin thread of top steam injection string.
In described trumpet, one end of steam injection pipe and big extra steam injection pipe is standard oil pipe box, and the other end is standard oil
Pipe pin thread.
Compared with prior art, the beneficial effects of the utility model are: use apparatus of the present invention to carry out thick oil horizontal well double
During pipe steam injection, this device is lowered into above the heel end of horizontal wellbore, this device top order steam injection pipe, and bottom connects Double-pipe gas-injection,
Only use a steam injection pipe to reach the purpose of two-tube steam injection in achieving vertical bore, save one section of steam injection string, reduce
Vapours is in the heat loss on the way of peupendicular hole section.Rely on the two-tube steam-matching device on this device, it is possible to achieve to big extra steam injection
The distribution of steam injection pipe steam injection region total steam injection amount in pipe steam injection region and trumpet, outer join steam vent when changing and interior joins steam vent exit face
Time long-pending, the steam injection amount in inside and outside steam injection pipe steam injection region can be changed.This device is simple and practical, can effectively reduce steam injection string material
And operating cost, improve steam injection thermal effect, it is adaptable to the thick oil thermal extractions such as Double-pipe gas-injection.
Accompanying drawing explanation
The structure chart of Fig. 1 this utility model two-tube conversion equipment of steam injection list.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail:
As it is shown in figure 1, apparatus of the present invention include connecing under two-tube hangoff receptacle top connection 1, two-tube hangoff receptacle 2, two-tube hangoff receptacle
Head female thread 3, two-tube hangoff receptacle lower contact 4, two-tube steam-matching device top connection 5, outer tube join steam vent 6, two-tube steam-matching device 7, interior
Pipe joins steam vent 8, big extra steam injection pipe 9, big extra steam injection pipe lower contact 10, small size interior steam injection pipe 11.
Two-tube hangoff receptacle top connection 1 in Fig. 1 is standard oil pipe box, is used for connecting the pin thread of top steam injection string, from
And realizing the connection of the single steam injection string in vertical bore, the single steam injection string in vertical bore is by plain tubing or insulation oil
Pipe forms, and is used for connecting well head steam boiler, injects vapours to thick oil reservoir, can be with this pipe suction crude oil to ground during production
Face；
Two-tube hangoff receptacle 2 in Fig. 1 is used for outside steam injection pipe and the inside steam injection pipe hanging in horizontal wellbore.
The two-tube steam-matching device top connection 5 in Fig. 1 can be connected by the two-tube hangoff receptacle lower contact female thread 3 in Fig. 1,
Two-tube steam-matching device top connection 5 is attached by the female thread 3 of pin thread with two-tube hangoff receptacle lower contact, thus realizes a whole set of double
Steam injection string and the suspension of two-tube suspension arrangement in pipe.
Two-tube hangoff receptacle lower contact 4 in Fig. 1 is standard oil pipe pin thread, the outside note of single Double-pipe gas-injection conversion equipment bottom
Big extra steam injection pipe 9 in steam pipe post, i.e. Fig. 1, realizes the suspension with two-tube suspension arrangement by standard female buckle structure.A whole set of outer note
Steam pipe post, according to the needs of steam injection, uses the form made up a joint to be attached.
Two-tube steam-matching device top connection 5 in Fig. 1, is threaded connection and is suspended on two-tube hangoff receptacle 2.
The steam that steam injection list two-tube conversion equipment top is come joins steam vent 6 by the outer tube of the two-tube steam-matching device in Fig. 1
Shunt, thus realize the steam injection function of big extra steam injection pipe 9 in Fig. 1.This is joined steam vent and is opened on tube wall, and aperture area is not subject to
The impact of pipe diameter, can by outer tube join steam vent 6 and inner tube join the ratio of steam vent 8 realize more flexibly steam quantitatively point
Stream.
Two-tube steam-matching device 7 in Fig. 1, mainly realizes the big extra steam injection pipe 9 in Fig. 1 and the small size interior steam injection in Fig. 1
The vapor partial pressure of pipe 11 and shunting.
The inner tube of the two-tube steam-matching device in Fig. 1 joins steam vent 8, is mainly used to realize the small size interior steam injection pipe 11 in Fig. 1
Steam injection function.
Big extra steam injection pipe 9 in Fig. 1, for heat injection steam.
The lower contact 10 of the big extra steam injection pipe in Fig. 1, for standard oil pipe pin thread, big extra steam injection pipe passes through standard oil pipe
Pin thread and box structure carry out the connection that makes up a joint.
Small size interior steam injection pipe 11 in Fig. 1, for heat injection steam, and the return flow line as oil gas water, pass through oil pipe
Standard pin thread and box structure carry out the connection that makes up a joint.
An embodiment of the present utility model is as follows:
Heavy crude reservoir uses horizontal well two-tube heat injection steam, horizontal wellbore length 300-700m, and steam injection is handled up thermal recovery.
In Fig. 1, big extra steam injection pipe 9 is connected by the form made up a joint, when reaching the outer steam injection length of tube of design, and well
Mouth hangs.
Interior steam injection pipe 11 in Fig. 1 is inserted in outer steam injection pipe 9, is connected by the form made up a joint, when reaching design
Interior steam injection length of tube time, be connected on two-tube steam-matching device 7, rear two-tube steam-matching device connect two-tube hangoff receptacle 2.
All outside steam injection pipes 9 are connected on two-tube hangoff receptacle 2.
Two-tube hangoff receptacle is connected on single steam injection pipe, and single steam injection pipe is connected, by under whole tubing string by the form made up a joint
Enter to shaft bottom design attitude, until single steam injection pipe is connected to well head, rear connection wellhead tree tree, Wellhead steam injection device, thus real
Existing vertical section single tube steam injection, the two-tube steam injection of horizontal wellbore.
Relying on the two-tube conversion equipment of steam injection list, can realize being converted into two-tube connection by single tube, this device is lowered into horizontal well
Above the heel end of cylinder, this device top order steam injection pipe, bottom connects Double-pipe gas-injection, it is achieved only use a steam injection in vertical bore
Manage and reach the purpose of two-tube steam injection, save one section of steam injection string, reduce the vapours heat loss on the way in peupendicular hole section.
Rely on the two-tube steam-matching device on this device, it is possible to achieve to steam injection in big extra steam injection pipe steam injection region and trumpet
The distribution of pipe steam injection region total steam injection amount, when change outer join steam vent and interior join steam vent discharge area time, inside and outside steam injection can be changed
The steam injection amount in pipe steam injection region.
Technique scheme is a kind of embodiment of the present utility model, for those skilled in the art,
On the basis of the utility model discloses principle, it is easy to make various types of improvement or deformation, be not limited solely to this reality
By the structure described by novel above-mentioned specific embodiment, the most previously described the most preferred, and the most restrictive
Meaning.
Claims (6)
1. the two-tube conversion equipment of steam injection list, it is characterised in that: the described two-tube conversion equipment of steam injection list includes two-tube outstanding
Steam injection pipe in hanging seat, two-tube steam-matching device, big extra steam injection pipe and trumpet；
One end of described two-tube hangoff receptacle is two-tube hangoff receptacle top connection, is connected with top steam injection string, and the other end is two-tube outstanding
Hanging seat lower contact, the outside of two-tube hangoff receptacle lower contact is standard oil pipe pin thread, is noted with big extra by this standard oil pipe pin thread
One end of steam pipe connects, and the inside of two-tube hangoff receptacle lower contact is provided with female thread, by this female thread and two-tube steam-matching device
One end connects, and the other end of described two-tube steam-matching device is connected with one end of steam injection pipe in trumpet by standard oil pipe pin thread；
The diameter of described big extra steam injection pipe is more than the diameter of small size interior steam injection pipe；
Described two-tube steam-matching device has outer tube and joins steam vent and inner tube joins steam vent.
The two-tube conversion equipment of steam injection list the most according to claim 1, it is characterised in that: described big extra steam injection pipe and little
In number, steam injection pipe is arranged concentrically.
The two-tube conversion equipment of steam injection list the most according to claim 2, it is characterised in that: the one of described two-tube steam-matching device
End is provided with external screw thread, is connected with the female thread of two-tube hangoff receptacle lower contact；Described two-tube steam-matching device has and is coaxial therewith
The central through hole of line, an end face of central through hole is positioned at two-tube hangoff receptacle lower contact, and another end face is positioned at trumpet note
In the inner chamber of steam pipe, form said inner tube and join steam vent；
Having described outer tube on the middle part tube wall of described two-tube steam-matching device and join steam vent, described outer tube is joined steam vent and is positioned at big extra
In the inner chamber of steam injection pipe.
The two-tube conversion equipment of steam injection list the most according to claim 3, it is characterised in that: described outer tube joins steam vent two-tube
On the circumference of the tube wall of steam-matching device uniform.
The two-tube conversion equipment of steam injection list the most according to claim 4, it is characterised in that: described two-tube hangoff receptacle top connection
For standard oil pipe box, it is connected with the pin thread of top steam injection string.
6. according to the arbitrary described two-tube conversion equipment of steam injection list of claim 1 to 5, it is characterised in that: note in described trumpet
One end of steam pipe and big extra steam injection pipe is standard oil pipe box, and the other end is standard oil pipe pin thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572058.8U CN205858203U (en) | 2016-06-14 | 2016-06-14 | A kind of two-tube conversion equipment of steam injection list |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620572058.8U CN205858203U (en) | 2016-06-14 | 2016-06-14 | A kind of two-tube conversion equipment of steam injection list |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205858203U true CN205858203U (en) | 2017-01-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620572058.8U Active CN205858203U (en) | 2016-06-14 | 2016-06-14 | A kind of two-tube conversion equipment of steam injection list |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999577A (en) * | 2018-10-24 | 2018-12-14 | 西南石油大学 | A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection |
| CN110762211A (en) * | 2019-11-22 | 2020-02-07 | 李国栋 | Oil well is with thermal-insulated heat preservation abrasionproof oil pipe pin end sealing device |
-
2016
- 2016-06-14 CN CN201620572058.8U patent/CN205858203U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108999577A (en) * | 2018-10-24 | 2018-12-14 | 西南石油大学 | A kind of hydrate solid state fluidizing exploitation variable diameter bilayer pipe connection |
| CN108999577B (en) * | 2018-10-24 | 2024-04-12 | 西南石油大学 | Variable-diameter double-layer pipe connecting device for solid-state fluidization exploitation of hydrate |
| CN110762211A (en) * | 2019-11-22 | 2020-02-07 | 李国栋 | Oil well is with thermal-insulated heat preservation abrasionproof oil pipe pin end sealing device |
| CN110762211B (en) * | 2019-11-22 | 2024-06-11 | 李国栋 | Heat-insulating wear-proof oil pipe pin end sealing device for oil well |
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| GR01 | Patent grant |