CN207048754U - Layering steam injection process pipe string in a kind of horizontal well tube - Google Patents
Layering steam injection process pipe string in a kind of horizontal well tube Download PDFInfo
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- CN207048754U CN207048754U CN201720350097.8U CN201720350097U CN207048754U CN 207048754 U CN207048754 U CN 207048754U CN 201720350097 U CN201720350097 U CN 201720350097U CN 207048754 U CN207048754 U CN 207048754U
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- heat
- string
- steam injection
- tubing
- horizontal well
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Abstract
The utility model discloses steam injection process pipe string is layered in a kind of horizontal well tube, including top tubing string and bottom tubing string, the bottom tubing string includes the plug, punching screen casing, heat-sensitive packer being sequentially connected from bottom to top, sliding sleeve, oil pipe, thermal expansion compensator, heat-proof string are suppressed in the pitching that the top tubing string includes being sequentially connected from bottom to top, and the heat-sensitive packer connects pitching by tubing nipple and suppresses sliding sleeve.The punching screen casing both ends connect plug, heat-sensitive packer respectively by other similar tubing nipples.It is preferable that the utility model can realize that one-trip string can complete technique, the using effects such as layer steam injection, oil jacket sealing, thermal expansion compensation.
Description
Technical field
Oilfield horizontal well tubing string is the utility model is related to, layering steam injection process duct in specifically a kind of horizontal well tube
Post.
Background technology
In oil-field thick-oil block development process, casing tube well-completion horizontal well is a kind of conventional completion development scheme, to solution
Certainly thin layer heavy oil development is significant.Most of oil well is required for being layered steam injection to heat different oil in recovery process
Layer crude oil, viscosity of crude is reduced to realize economic benefit crude oil extraction.
By retrieval, application number：201010160440.5 the applying date：It is excellent that 2010-04-30 discloses a kind of horizontal well in segments
Change steam injection technology, will be insulated using thermal packer between steam injection pipe and screen casing or sleeve pipe, by a steam injection of general steam injection
Chamber is divided into two or more steam injection chambers, carries out selections steam injection, two sections (or multistage) dispensing and two sections (or multistage) same to note, and right
Packer location and size, steam injection valve size, steam injection amount and steam injection amount optimize design, realize the segmentation of net horizontal section oil reservoir
Optimize steam injection.Horizontal well in segments optimization steam injection technology is simple, cost is low, measure success rate is high, when horizontal well in segments optimizes steam injection
Net horizontal section oil reservoir effectively employs the more general steam injection of length and averagely adds 70% or so, can effectively adjust net horizontal section and inhale vapour
Section, improve horizontal well steam injection exploitation effect.
The composition of the technical scheme of technology disclosed above and the application are incomplete same, some distinguishing characteristics, prior art
Do not possess.It can not realize that one-trip string can complete the techniques such as layer steam injection, oil jacket sealing, thermal expansion compensation.
Utility model content
The purpose of this utility model is to provide layering steam injection process pipe string in a kind of horizontal well tube, can realize a pipe
It is preferable that post can complete technique, the using effects such as layer steam injection, oil jacket sealing, thermal expansion compensation.
In order to reach above-mentioned purpose, the utility model employs following technical scheme, and layering note steams in a kind of horizontal well tube
Vapour process pipe string, including top tubing string and bottom tubing string, the bottom tubing string include plug, the punching being sequentially connected from bottom to top
Sliding sleeve, oil pipe, thermal expansion compensation are suppressed in screen casing, heat-sensitive packer, the pitching that the top tubing string includes being sequentially connected from bottom to top
Device, heat-proof string, the heat-sensitive packer connect pitching by tubing nipple and suppress sliding sleeve.
The punching screen casing both ends connect plug, heat-sensitive packer respectively by other similar tubing nipples.
Compared to prior art, the utility model has the advantages that：
When steam enters heat-proof string, if injection vapours temperature, up to 365 DEG C, heat-sensitive packer then expanded by heating is real
Existing oil jacket sealing, makes vapours enter understratum by punching screen casing.When needing the steam injection to enter heat-sensitive packer upper formation, from
Well head puts into 25mm steel balls, and being suppressed by oil pipe makes steel ball promote sliding sleeve descending, opens the by-pass prot positioned at sliding sleeve edge, together
When the closed bottom tubing string of steel ball drop, steam can enter upper formation by by-pass prot.It can realize that one-trip string can be complete
It is preferable into technique, using effects such as layer steam injection, oil jacket sealing, thermal expansion compensation.
Brief description of the drawings
Fig. 1 is the structural representation of layering steam injection process pipe string in a kind of horizontal well tube of the utility model.
In figure：Plug 1, tubing nipple 2, punching screen casing 3, tubing nipple 4, heat-sensitive packer 5, tubing nipple 6, pitching are beaten
Press sliding sleeve 7, oil pipe 8, thermal expansion compensator 9, heat-proof string 10.
Embodiment
Relevant detailed description of the present utility model and technology contents, coordinate brief description of the drawings as follows, but accompanying drawing is only to refer to
With purposes of discussion, not it is used for being any limitation as the utility model.
As shown in Figure 1, layering steam injection process pipe string in a kind of horizontal well tube, plug is sequentially connected from lower end to upper end
1st, sliding sleeve 7, oil pipe 8, heat are suppressed in tubing nipple 2, punching screen casing 3, tubing nipple 4, heat-sensitive packer 5, tubing nipple 6, pitching
Rise compensator 9, heat-proof string 10.
When steam enters heat-proof string, if injection vapours temperature, up to 365 DEG C, heat-sensitive packer then expanded by heating is real
Existing oil jacket sealing, makes vapours enter understratum by punching screen casing.
When needing the steam injection to enter heat-sensitive packer upper formation, 25mm steel balls are put into from well head, being suppressed by oil pipe makes steel ball
Promote sliding sleeve descending, open the by-pass prot positioned at sliding sleeve edge, while the closed bottom tubing string of steel ball drop, steam can pass through
By-pass prot enters upper formation.
Heat-sensitive packer 5, pitching suppress sliding sleeve 7, thermal expansion compensator 9 is prior art, repeat no more, and being directly connected to should
With.
Preferred embodiment of the present utility model is the foregoing is only, is not used to limit the scope of the claims of the present utility model, its
He uses the equivalence changes of the utility model patent spirit, all should all belong to the scope of the claims of the present utility model.
Claims (2)
1. layering steam injection process pipe string in a kind of horizontal well tube, it is characterised in that described including top tubing string and bottom tubing string
Bottom tubing string includes the plug, punching screen casing, heat-sensitive packer being sequentially connected from bottom to top, the top tubing string include from lower and
On the pitching that is sequentially connected suppress sliding sleeve, oil pipe, thermal expansion compensator, heat-proof string, the heat-sensitive packer passes through tubing nipple
Sliding sleeve is suppressed in connection pitching.
2. layering steam injection process pipe string in a kind of horizontal well tube according to claim 1, it is characterised in that the punching
Screen casing both ends connect plug, heat-sensitive packer respectively by other similar tubing nipples.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720350097.8U CN207048754U (en) | 2017-04-05 | 2017-04-05 | Layering steam injection process pipe string in a kind of horizontal well tube |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720350097.8U CN207048754U (en) | 2017-04-05 | 2017-04-05 | Layering steam injection process pipe string in a kind of horizontal well tube |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207048754U true CN207048754U (en) | 2018-02-27 |
Family
ID=61488712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720350097.8U Active CN207048754U (en) | 2017-04-05 | 2017-04-05 | Layering steam injection process pipe string in a kind of horizontal well tube |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207048754U (en) |
-
2017
- 2017-04-05 CN CN201720350097.8U patent/CN207048754U/en active Active
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