CN203879474U - CO2 oil displacement injection well anticorrosion anti-seepage production tubular column - Google Patents
CO2 oil displacement injection well anticorrosion anti-seepage production tubular column Download PDFInfo
- Publication number
- CN203879474U CN203879474U CN201420333503.6U CN201420333503U CN203879474U CN 203879474 U CN203879474 U CN 203879474U CN 201420333503 U CN201420333503 U CN 201420333503U CN 203879474 U CN203879474 U CN 203879474U
- Authority
- CN
- China
- Prior art keywords
- packer
- oil pipe
- sliding sleeve
- corrosion
- injection well
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
- 238000002347 injection Methods 0.000 title claims abstract description 16
- 239000007924 injection Substances 0.000 title claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 title claims abstract description 14
- 238000004519 manufacturing process Methods 0.000 title abstract description 4
- 238000005260 corrosion Methods 0.000 claims abstract description 31
- 230000007797 corrosion Effects 0.000 claims abstract description 21
- 238000012544 monitoring process Methods 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 12
- 239000002283 diesel fuel Substances 0.000 claims description 3
- 238000007789 sealing Methods 0.000 abstract description 6
- 230000000694 effects Effects 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910000975 Carbon steel Inorganic materials 0.000 description 1
- 241000935974 Paralichthys dentatus Species 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000010962 carbon steel Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Examining Or Testing Airtightness (AREA)
Abstract
The utility model discloses a CO2 oil displacement injection well anticorrosion anti-seepage production tubular column which comprises a horn mouth, a corrosion monitoring ring, a packer and a sliding sleeve switch. The upper end of the horn mouth is connected with the lower end of the corrosion monitoring ring through an oil pipe, the upper end of the corrosion monitoring ring is connected with the lower end of the packer through the oil pipe, the upper end of the packer is connected with the lower end of the sliding sleeve switch, the upper end of the sliding sleeve switch is connected with the oil pipe, the horn mouth, the corrosion monitoring ring, the packer, the sliding sleeve switch and the oil pipe are all inserted into an inner cavity of the sleeve, and annular space formed between the oil pipe and the sleeve is filled with protection liquid. The production tubular column is simple in structure, reliable in sealing and capable of achieving an anticorrosion anti-seepage effect.
Description
Technical field
The utility model relates to a kind of anti-corrosion leak-proof and leaks flow string, particularly a kind of CO
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string.
Background technology
At present, CO
2the displacement of reservoir oil is the effective technology means that improve LOW PERMEABILITY RESERVOIR recovery ratio, and at home and abroad all there is application in oil field.Due to CO
2after meeting water, can cause heavy corrosion to carbon steel; therefore require injection string to there is certain antiseptic property; also need Injection Well production casing that effective protection is provided simultaneously; insert the on-the-spot application of sealing tubing string comparatively extensive; dependable performance, but its cost is higher, and it is more to enter well tool; complicated construction technique, is therefore not suitable at CO
2generally apply at oil displacement test scene.
Summary of the invention
The purpose of this utility model is to adopt CO in order to solve
2the displacement of reservoir oil is carried out in oil extraction process, the serious and existing sealing tubing string cost complicated problem of high construction of casing corrosion and a kind of CO of providing
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string.
CO described in the utility model
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string and includes horn mouth, corrosion monitoring ring, packer and sliding sleeve switch; wherein bell-mouthed upper end is connected with the lower end of corrosion monitoring ring by oil pipe; the upper end of corrosion monitoring ring is connected with packer lower end by oil pipe; the upper end of packer is connected with the lower end of sliding sleeve switch; the upper end connected pipes of sliding sleeve switch; horn mouth, corrosion monitoring ring, packer, sliding sleeve switch and oil pipe are all plugged in the inner chamber of sleeve pipe, are filled with protection liquid in the annular space of oil pipe and sleeve pipe.
The model of packer is Y521-115 type, is positioned at 20-30m on gas injection layer.
Oil pipe is hermetic seal oil pipe.
Protection liquid is-20
#diesel oil.
Use principle of the present utility model:
When being full of in the annular space between oil pipe and sleeve pipe after protection liquid, above carry oil pipe, after the 5-10 that turns clockwise circle, transfer, make Y521 packer setting, thereby make the annular space sealing between oil pipe and sleeve pipe.
The beneficial effects of the utility model:
Start to note CO
2after, the hydraulic anchor anchor fluke on packer is protruding clamping internal surface of sleeve pipe under hydraulic action, prevents string creep; Hermetic seal oil pipe can prevent that gas permeation to tubing and casing annular space from causing corrosion; Y521 packer and annular protective liquid can effectively protect annular space not to be subject to CO
2the impact of corrosion; Sliding sleeve switch be opened or be closed to later stage can by steel wire operation, changes protection liquid and well-flushing, kill job thereby realize.The utility model is simple in structure, and sealing is reliable, can play anticorrosion and effect antiseep.
Brief description of the drawings
Fig. 1 is the utility model structural representation.
1, horn mouth 2, corrosion monitoring ring 3, packer 4, sliding sleeve switch
5, oil pipe 6, sleeve pipe 7, protection liquid.
Detailed description of the invention
Refer to shown in Fig. 1:
CO described in the utility model
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string and includes horn mouth 1, corrosion monitoring ring 2, packer 3 and sliding sleeve switch 4; wherein the upper end of horn mouth 1 is connected with the lower end of corrosion monitoring ring 2 by oil pipe; the upper end of corrosion monitoring ring 1 is connected with packer 3 lower ends by oil pipe; the upper end of packer 3 is connected with the lower end of sliding sleeve switch 4; the upper end connected pipes 5 of sliding sleeve switch 4; horn mouth 1, corrosion monitoring ring 2, packer 3, sliding sleeve switch 4 and oil pipe 5 are all plugged in the inner chamber of sleeve pipe 6, are filled with protection liquid 7 in the annular space of oil pipe 5 and sleeve pipe 6.
The model of packer 3 is Y521-115 type, is positioned at 20-30m on gas injection layer.
Oil pipe 5 is hermetic seal oil pipe.
Protection liquid 7 is-20
#diesel oil.
Use principle of the present utility model:
When being full of in the annular space between oil pipe 5 and sleeve pipe 6 after protection liquid, above carry oil pipe 5, after the 5-10 that turns clockwise circle, transfer, Y521 type packer 3 is set, thereby make the annular space sealing between oil pipe 5 and sleeve pipe 6.
Claims (4)
1. a CO
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string; it is characterized in that: include horn mouth, corrosion monitoring ring, packer and sliding sleeve switch; wherein bell-mouthed upper end is connected with the lower end of corrosion monitoring ring by oil pipe; the upper end of corrosion monitoring ring is connected with packer lower end by oil pipe; the upper end of packer is connected with the lower end of sliding sleeve switch; the upper end connected pipes of sliding sleeve switch; horn mouth, corrosion monitoring ring, packer, sliding sleeve switch and oil pipe are all plugged in the inner chamber of sleeve pipe, are filled with protection liquid in the annular space of oil pipe and sleeve pipe.
2. a kind of CO according to claim 1
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string, it is characterized in that: the model of described packer is Y521-115 type, is positioned at 20-30m on gas injection layer.
3. a kind of CO according to claim 1
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string, it is characterized in that: described oil pipe is hermetic seal oil pipe.
4. a kind of CO according to claim 1
2displacement of reservoir oil Injection Well anti-corrosion leak-proof leaks flow string, it is characterized in that: described protection liquid is-20
#diesel oil.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333503.6U CN203879474U (en) | 2014-06-20 | 2014-06-20 | CO2 oil displacement injection well anticorrosion anti-seepage production tubular column |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420333503.6U CN203879474U (en) | 2014-06-20 | 2014-06-20 | CO2 oil displacement injection well anticorrosion anti-seepage production tubular column |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203879474U true CN203879474U (en) | 2014-10-15 |
Family
ID=51679984
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420333503.6U Expired - Lifetime CN203879474U (en) | 2014-06-20 | 2014-06-20 | CO2 oil displacement injection well anticorrosion anti-seepage production tubular column |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203879474U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033139A (en) * | 2014-06-20 | 2014-09-10 | 中国石油化工股份有限公司 | Corrosion and leakage preventing production pipe column of CO2 oil displacement injection well |
| CN105545272A (en) * | 2015-12-31 | 2016-05-04 | 中国石油天然气股份有限公司 | Oil extraction method for ultra-low permeability water-sensitive reservoir/compact reservoir |
-
2014
- 2014-06-20 CN CN201420333503.6U patent/CN203879474U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104033139A (en) * | 2014-06-20 | 2014-09-10 | 中国石油化工股份有限公司 | Corrosion and leakage preventing production pipe column of CO2 oil displacement injection well |
| CN105545272A (en) * | 2015-12-31 | 2016-05-04 | 中国石油天然气股份有限公司 | Oil extraction method for ultra-low permeability water-sensitive reservoir/compact reservoir |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20141015 |
|
| CX01 | Expiry of patent term |