CN201857947U - Non-casing-pressure, high-efficiency and heat-insulation steam injection string - Google Patents
Non-casing-pressure, high-efficiency and heat-insulation steam injection string Download PDFInfo
- Publication number
- CN201857947U CN201857947U CN2010206036729U CN201020603672U CN201857947U CN 201857947 U CN201857947 U CN 201857947U CN 2010206036729 U CN2010206036729 U CN 2010206036729U CN 201020603672 U CN201020603672 U CN 201020603672U CN 201857947 U CN201857947 U CN 201857947U
- Authority
- CN
- China
- Prior art keywords
- heat
- steam injection
- casing
- pressure
- insulation
- 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 - Fee Related
Links
- 238000010793 Steam injection (oil industry) Methods 0.000 title claims abstract description 23
- 238000009413 insulation Methods 0.000 title abstract description 8
- 238000011084 recovery Methods 0.000 claims description 15
- 239000007788 liquid Substances 0.000 abstract description 6
- 238000010276 construction Methods 0.000 abstract description 3
- 230000007613 environmental effect Effects 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- 230000002265 prevention Effects 0.000 abstract 1
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 6
- 238000005516 engineering process Methods 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 239000003208 petroleum Substances 0.000 description 3
- 230000007812 deficiency Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/10—Geothermal energy
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- Pressure Vessels And Lids Thereof (AREA)
Abstract
The utility model discloses a non-casing-pressure, high-efficiency and heat-insulation steam injection string, which comprises a casing pipe, a casing pipe gate, a steam injection gate, a heat-insulation pipe, a downhole heat expansion compensator, a heat extraction check valve and a packer. The heat-insulation pipe is arranged in the casing pipe. The heat-insulation pipe is sequentially connected with the downhole heat expansion compensator, the heat extraction check valve and the packer. The non-casing-pressure, high-efficiency and heat-insulation steam injection string has the characteristics that an annular non-liquid non-casing-pressure steam injection string is adopted for the steam injection; the heat loss is less; the annular heat insulation is good; the casing pipe is protected well; the annular non-casing pressure is realized; the wellhead is relatively safe during steam injection; no annular dead oil is caused after blowout prevention; and the string is beneficial for construction and environmental protection; therefore, the string is widely applied to the heat extraction process of oil.
Description
Technical field
The utility model relates to heavy crude petroleum thermal recovery steam injection string, particularly a kind of no casing pressure effectively insulating steam injection string.
Background technology
At present, the on-the-spot used steam injection string of petroleum thermal recovery, being generally has a casing pressure steam injection string with packer packing spacer ring sky, for the steam injection technology technology of petroleum thermal recovery has been made contribution, but it exists following shortcoming or deficiency simultaneously: 1) in the annular space of its notes vapour well liquid is arranged, casing pressure is arranged, can not realize not having casing pressure and annular space no liquid and annotate vapour; 2) can only realize low cover pressure injection vapour, annulus fluid vaporization back casing pressure raises easily; 3) longer if the steam injection process casing pressure, is put the casing pressure time in case raise, and the outlet gas to take away heat bigger; 4) annulus fluid good heat conductivity, heat waste is big.
Summary of the invention
The purpose of this utility model provides a kind of no casing pressure effectively insulating steam injection string, adopts the steam injection string structure of no casing pressure, annular space no liquid, the shortcoming or the deficiency that overcome effectively or avoid existing in the above-mentioned prior art.
No casing pressure effectively insulating steam injection string described in the utility model comprises sleeve pipe, sleeve gate, notes steam brake door, instlated tubular, down-hole heat expansion expansion loop, thermal recovery ball-and-seat, packer.Be lowered to instlated tubular in the described sleeve pipe, be connected with packer with down-hole heat expansion expansion loop, thermal recovery ball-and-seat in turn under the instlated tubular.
Wherein, described packer is installed on the instlated tubular of annotating vapour layer top and thermal recovery ball-and-seat bottom.Described down-hole heat expansion expansion loop and thermal recovery ball-and-seat are installed and connected in instlated tubular bottom, packer top.
The utility model has following advantage compared with prior art:
1, adopt the annular space no liquid not have the casing pressure steam injection string and annotate vapour, heat waste is few;
2, annular space good heat-insulation effect is to protecting of sleeve pipe;
3, annular space does not have casing pressure, and the steam injection process well head is comparatively safe;
4, behind the open flow during operation, annular space does not have dead oil, helps construction, helps environmental protection.
Description of drawings
Accompanying drawing is a kind of example structure schematic diagram of the present utility model.
The specific embodiment
Consult accompanying drawing, a kind of no casing pressure effectively insulating steam injection string comprises sleeve pipe 1, sleeve gate 2, annotates steam brake door 3, instlated tubular 4, down-hole heat expansion expansion loop 5, thermal recovery ball-and-seat 6, packer 7.Be lowered to instlated tubular 4 in the sleeve pipe 1, instlated tubular is connected with down-hole heat expansion expansion loop 5, thermal recovery ball-and-seat 6 and packer 7 for 4 times in turn.
During operation, after installing notes vapour well head, by sleeve gate 2 inflated with nitrogen in the oil jacket annular space, liquid returns out ground or gets into oil reservoir by instlated tubular 1 by annotating steam brake door 3 in the well, when nitrogen is full of whole annular space, opens sleeve gate 2, bleed off sleeve pipe inner high voltage nitrogen, the pressure that reaches in the oil jacket annular space is consistent with atmospheric pressure, finishes whole tubing string construction, just can annotate the vapour operation.
Claims (3)
1. no casing pressure effectively insulating steam injection string, comprise sleeve pipe, sleeve gate, notes steam brake door, instlated tubular, down-hole heat expansion expansion loop, thermal recovery ball-and-seat, packer, it is characterized in that being lowered to instlated tubular in the described sleeve pipe, be connected with packer with down-hole heat expansion expansion loop, thermal recovery ball-and-seat in turn under the instlated tubular.
2. no casing pressure effectively insulating steam injection string according to claim 1 is characterized in that described packer is installed on the instlated tubular of annotating vapour layer top and thermal recovery ball-and-seat bottom.
3. no casing pressure effectively insulating steam injection string according to claim 1 is characterized in that described down-hole heat expansion expansion loop and thermal recovery ball-and-seat are installed and connected in instlated tubular bottom, packer top.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206036729U CN201857947U (en) | 2010-11-12 | 2010-11-12 | Non-casing-pressure, high-efficiency and heat-insulation steam injection string |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206036729U CN201857947U (en) | 2010-11-12 | 2010-11-12 | Non-casing-pressure, high-efficiency and heat-insulation steam injection string |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201857947U true CN201857947U (en) | 2011-06-08 |
Family
ID=44103757
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206036729U Expired - Fee Related CN201857947U (en) | 2010-11-12 | 2010-11-12 | Non-casing-pressure, high-efficiency and heat-insulation steam injection string |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201857947U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536183A (en) * | 2012-01-31 | 2012-07-04 | 中国石油化工股份有限公司 | Underground gas injection pipe column |
| CN102839955A (en) * | 2012-09-28 | 2012-12-26 | 中国石油化工股份有限公司 | Hierarchical metering and filling device for steam injection well |
| CN104747127A (en) * | 2013-12-30 | 2015-07-01 | 深圳市百勤石油技术有限公司 | Deep well oil production device and heat preservation method thereof |
| CN105156084A (en) * | 2015-08-26 | 2015-12-16 | 中国石油天然气股份有限公司 | Annular Effusion Drainage Device |
-
2010
- 2010-11-12 CN CN2010206036729U patent/CN201857947U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102536183A (en) * | 2012-01-31 | 2012-07-04 | 中国石油化工股份有限公司 | Underground gas injection pipe column |
| CN102839955A (en) * | 2012-09-28 | 2012-12-26 | 中国石油化工股份有限公司 | Hierarchical metering and filling device for steam injection well |
| CN104747127A (en) * | 2013-12-30 | 2015-07-01 | 深圳市百勤石油技术有限公司 | Deep well oil production device and heat preservation method thereof |
| CN105156084A (en) * | 2015-08-26 | 2015-12-16 | 中国石油天然气股份有限公司 | Annular Effusion Drainage Device |
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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: 20110608 Termination date: 20131112 |