CN102121367A - Underground steam injection sealing, heat insulation and compensation integrated device - Google Patents
Underground steam injection sealing, heat insulation and compensation integrated device Download PDFInfo
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- CN102121367A CN102121367A CN2011100323574A CN201110032357A CN102121367A CN 102121367 A CN102121367 A CN 102121367A CN 2011100323574 A CN2011100323574 A CN 2011100323574A CN 201110032357 A CN201110032357 A CN 201110032357A CN 102121367 A CN102121367 A CN 102121367A
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- steam injection
- heat insulation
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Abstract
The invention discloses an underground steam injection sealing, heat insulation and compensation integrated device. The device comprises a heat insulation pipe; an upper crossover sub and a lower crossover sub are arranged at two ends of the heat insulation pipe respectively; a steam injection packer is sleeved on the lower part of the heat insulation pipe; the device is characterized in that: the steam injection packer consists of a sealing steel body, and a metal sliding sleeve, a setting taper sleeve, and a sealing rubber packer which are arranged in the sealing steel body and embedded sequentially; the metal sliding sleeve and the setting taper sleeve are provided with conical surfaces which are matched with each other; the setting taper sleeve and the sealing rubber packer are fixed in the sealing steel body; injection holes corresponding to the metal sliding sleeve are uniformly distributed at the upper end of the sealing steel body; the upper end of the sealing steel body is fixedly connected with a pressure cylinder body; a gas generator or capsule liquid corresponding to the injection holes is arranged in the pressure cylinder body; and the lower end of the sealing steel body is bonded with the lower crossover sub. The underground steam injection sealing, heat insulation and compensation integrated device has the advantages that: the device has high sealing reliability, and a compensation function, can avoid the sealing failure caused by friction damage between the sealing rubber packer and the inner wall of the sleeve at the initial setting stage of the steam injection packer, works reliably and is convenient to recover.
Description
Technical field
The present invention relates to a kind of oil field oil recovery apparatus, the steam injection of particularly a kind of down-hole seals heat insulation compensation integrated device.
Background technology
Need of viscous oil recovery before the oil well steam in jection, is lowered to heat-proof string to the stratum steam in jection in pit shaft, steam imports the stratum by heat-proof string, reaches the reducing thick oil viscosity purpose, is convenient to smooth extraction.Be to reduce heat waste, protection well inner sleeve connects steam injection packer usually in steam injection heat-proof string lower end, make steam import the stratum by heat-proof string before, no longer return the formed annular space of well inner sleeve and heat-proof string.There is the phenomenon of expanding with heat and contract with cold in heat-proof string in the steam in jection process, need connect compensation arrangement on heat-proof string, expands with heat and contract with cold to overcome heat-proof string, and the temperature-sensitive packer of avoiding its lower end to connect lost efficacy.Tradition expansion loop body uses plain tubing, does not do heat insulation processing, causes huge heat waste in the steam in jection process.And, cartridge and internal surface of sleeve pipe are rubbed after improved heat insulation expansion loop at the steam injection packer seat envelope initial stage, before its cartridge is fully expanded, is subjected to bottom heat-proof string action of gravity meeting generation to move, cause seal failure easily.
Summary of the invention
Technical problem to be solved by this invention provides a kind of sealing reliability height, has compensate function, can avoid cartridge and internal surface of sleeve pipe frictionally damage and the seal failure that causes, and the down-hole steam injection of reliable operation seals heat insulation compensation integrated device.
The present invention is achieved in that it comprises instlated tubular, be respectively equipped with at the instlated tubular two ends, under become the snapping head, be set with steam injection packer in the instlated tubular bottom, its special character is: described steam injection packer is by sealing steel body, be located in the sealing steel body and nested successively metal sliding sleeve, setting tapered sleeve and cartridge constitutes, be provided with the conical surface that cooperatively interacts at the metal sliding sleeve on the tapered sleeve with setting, setting tapered sleeve and cartridge is fixed in the sealing steel body, be evenly equipped with the spray-hole corresponding in sealing steel body upper end with the metal sliding sleeve, be connected with pressure cylinder in sealing steel body upper end, corresponding spray-hole place is provided with gas generator or capsule dress liquid in pressure cylinder, and described sealing steel body lower end is with change snapping head is bonding down.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, is provided with airtight and watertight padding between sealing steel body and instlated tubular, to improve sealing effectiveness.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, described sealing steel body is to be made of a sleeve pipe and the upper and lower gland that is located at the sleeve pipe two ends, wherein lower cover and sleeve pipe are by being threaded, described spray-hole is located on the upper press cover, described metal sliding sleeve, sets tapered sleeve and cartridge is enclosed within on the sleeve pipe and between upper and lower gland.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, is provided with an annular groove in the upper press cover inboard, and described metal sliding sleeve top and annular groove matched in clearance are also inserted in the annular groove.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, and corresponding spray-hole place is provided with storage respectively and presses the chamber in pressure cylinder, and described gas generator or capsule dress liquid are contained in storage and press in the chamber.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, and the described tapered sleeve that sets is to be made of a hard metallic sheath and the cone-shaped sealed gland that is fixedly set on the hard metallic sheath, and is stuck to avoid setting tapered sleeve.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, is evenly equipped with the bar shaped gap in hard metallic sheath bottom, and the bar shaped gap extends to the conical surface upper end that sets tapered sleeve, sets tapered sleeve so that the metal sliding sleeve can strut rapidly, realizes setting fast.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, and described cone-shaped sealed gland is to be made by softer metals.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, and described spray-hole upper end is a bellmouth, so that the high pressure draught that gas generator or capsule dress liquid produce passes through spray-hole fast, thereby guarantees to set fast.
Above-mentioned down-hole steam injection seals heat insulation compensation integrated device, and described capsule dress liquid is capsule dress anti-icing fluid or capsule dress alcohol.
Advantage of the present invention is: make gas generator or the explosion of capsule dress heated liquid produce high pressure draught by the high-temperature steam that injects in the instlated tubular, promote the metal sliding sleeve slides downwards, thereby strut cartridge and force to set the sealing reliability height by setting tapered sleeve; Because sealing steel body lower end with to become the snapping head down bonding, is heated back sealing steel body with become the snapping head down and separate, therefore have compensate function, can avoid steam injection packer to set initial stage cartridge and internal surface of sleeve pipe frictionally damage and the seal failure that causes; Reliable operation, it is convenient to reclaim.
Description of drawings
Fig. 1 is a structural representation of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the B-B sectional view of Fig. 1.
Among the figure: become snapping head 1 down, steam injection packer 2, sealing steel body 3, last change snapping head 4, instlated tubular 5, gas generator or capsule dress liquid 6, pressure cylinder 7, chamber 701, upper press cover 8 are pressed in storage, spray-hole 801, annular groove 802, hard metallic sheath 9, metal sliding sleeve 10, cone-shaped sealed gland 11, cartridge 12, sleeve pipe 13, lower cover 14, airtight and watertight padding 15.
The specific embodiment
As shown in the figure, this down-hole steam injection seals heat insulation compensation integrated device and comprises an instlated tubular 5, this instlated tubular 5 is a vacuum heat insulation tube, at the two ends of instlated tubular 5 respectively by becoming snapping head 4 on being threaded and becoming snapping head 1 down, be set with steam injection packer 2 in instlated tubular 5 bottoms, described steam injection packer 2 is by a sealing steel body 3, is located in the sealing steel body 3 and nested successively metal sliding sleeve 10, sets tapered sleeve and cartridge 12 constitutes.Described sealing steel body 3 is to be made of a sleeve pipe 13 and the upper press cover 8 and the lower cover 14 that are located at sleeve pipe 13 two ends, wherein lower cover 14 and sleeve pipe 13 are by being threaded, upper press cover 8 and sleeve pipe 13 is for one or by being threaded, present embodiment is made of one with upper press cover 8 and sleeve pipe 13 and is example, described metal sliding sleeve 10, set tapered sleeve and cartridge 12 is enclosed within on the sleeve pipe 13 and between upper and lower gland, be provided with airtight and watertight padding 15 between sleeve pipe 13 and instlated tubular 5.
Be provided with the conical surface that cooperatively interacts at metal sliding sleeve 10 on the tapered sleeve with setting, the described tapered sleeve that sets is to be made of with the cone-shaped sealed gland 11 that is fixedly set on the hard metallic sheath 9 a hard metallic sheath 9, hard metallic sheath 9 tops and upper press cover 8 are affixed by screw, be evenly equipped with bar shaped gap 901 in hard metallic sheath 9 bottoms, bar shaped gap 901 extends to the conical surface upper end that sets tapered sleeve, and described cone-shaped sealed gland 11 is to be made by softer metals.Cartridge 12 fixed clamp are provided with an annular groove 802 in upper press cover 8 inboards between the upper and lower gland of sealing steel body 3, described metal sliding sleeve 10 tops and annular groove 802 matched in clearance are also inserted in the annular groove 802.Be evenly equipped with the spray-hole 801 corresponding with metal sliding sleeve 10 on upper press cover 8, the spray-hole upper end is a bellmouth, and spray-hole 801 communicates with annular groove 802.Be enclosed within the pressure cylinder 7 on the instlated tubular 5 by being threaded in sealing steel body 3 upper ends, corresponding spray-hole 801 places are provided with storage respectively and press chamber 701 in pressure cylinder 7, gas generator or capsule dress liquid 6 in pressing chamber 701, is housed in storage, wherein capsule dress liquid can be liquid such as capsule dress anti-icing fluid or capsule dress alcohol, preferably adorns anti-icing fluid with capsule.Described sealing steel body 3 lower ends are with change snapping head 1 is bonding by fluid sealant down, and fluid sealant promptly lost efficacy under 120 ℃ of high temperature.
During use, this device is connected with the steam injection heat-proof string by last change snapping head 4, following change snapping head 1 can be used as steam (vapor) outlet, and steam is sent into the stratum, also can be as required under become and connect one or more oil pipe on the snapping head 1.Annotate the vapour well and begin steam injection, the steam injection heat-proof string raises with temperature and extends, before bottom hole temperature (BHT) rises to 200 ℃, this device moves down with the steam injection heat-proof string, when downhole temperature rises to 200 ℃ of left and right sides, the explosion of being heated of gas generator or capsule dress liquid 6 produces high pressure draught, promotes metal sliding sleeve 10 and glides, thereby strut cartridge 12 and force to set by setting tapered sleeve; Seal steel body 3 this moment and down become snapping head 1 because fluid sealant lost efficacy separated, steam injection packer 2 is expanded because of cartridge 12 and is fixed on well inner sleeve inwall, plugged well inner sleeve and the formed annular space of steam injection heat-proof string after setting.Downhole temperature continues to raise subsequently, and the steam injection heat-proof string raises with temperature and continues elongation, makes instlated tubular 5 continue to move down by sealing steel body 3 centers, rises to about 300 ℃ up to downhole temperature no longer to raise, and this compensation integrated device is finished compensation.
Claims (10)
1. a down-hole steam injection seals heat insulation compensation integrated device, comprise instlated tubular, be respectively equipped with at the instlated tubular two ends, under become the snapping head, be set with steam injection packer in the instlated tubular bottom, it is characterized in that: described steam injection packer is by sealing steel body, be located in the sealing steel body and nested successively metal sliding sleeve, setting tapered sleeve and cartridge constitutes, be provided with the conical surface that cooperatively interacts at the metal sliding sleeve on the tapered sleeve with setting, setting tapered sleeve and cartridge is fixed in the sealing steel body, be evenly equipped with the spray-hole corresponding in sealing steel body upper end with the metal sliding sleeve, be connected with pressure cylinder in sealing steel body upper end, corresponding spray-hole place is provided with gas generator or capsule dress liquid in pressure cylinder, and described sealing steel body lower end is with change snapping head is bonding down.
2. down-hole according to claim 1 steam injection seals heat insulation compensation integrated device, it is characterized in that: be provided with airtight and watertight padding between sealing steel body and instlated tubular.
3. down-hole according to claim 1 steam injection seals heat insulation compensation integrated device, it is characterized in that: described sealing steel body is to be made of a sleeve pipe and the upper and lower gland that is located at the sleeve pipe two ends, wherein lower cover and sleeve pipe are by being threaded, described spray-hole is located on the upper press cover, described metal sliding sleeve, sets tapered sleeve and cartridge is enclosed within on the sleeve pipe and between upper and lower gland.
4. down-hole according to claim 3 steam injection seals heat insulation compensation integrated device, it is characterized in that: be provided with an annular groove in the upper press cover inboard, described metal sliding sleeve top and annular groove matched in clearance are also inserted in the annular groove.
5. down-hole according to claim 1 steam injection seals heat insulation compensation integrated device, it is characterized in that: corresponding spray-hole place is provided with storage respectively and presses the chamber in pressure cylinder, and described gas generator or capsule dress liquid are contained in storage and press in the chamber.
6. down-hole according to claim 1 steam injection seals heat insulation compensation integrated device, it is characterized in that: the described tapered sleeve that sets is to be made of a hard metallic sheath and the cone-shaped sealed gland that is fixedly set on the hard metallic sheath.
7. down-hole according to claim 6 steam injection seals heat insulation compensation integrated device, it is characterized in that: be evenly equipped with the bar shaped gap in hard metallic sheath bottom, the bar shaped gap extends to the conical surface upper end that sets tapered sleeve.
8. down-hole according to claim 6 steam injection seals heat insulation compensation integrated device, it is characterized in that: described cone-shaped sealed gland is to be made by softer metals.
9. seal heat insulation compensation integrated device according to claim 1 or 3 or 5 described down-hole steam injections, it is characterized in that: described spray-hole upper end is bellmouth.
10. the down-hole steam injection seals heat insulation compensation integrated device according to claim 1 or 5, it is characterized in that: described capsule dress liquid is capsule dress anti-icing fluid or capsule dress alcohol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100323574A CN102121367A (en) | 2011-01-30 | 2011-01-30 | Underground steam injection sealing, heat insulation and compensation integrated device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011100323574A CN102121367A (en) | 2011-01-30 | 2011-01-30 | Underground steam injection sealing, heat insulation and compensation integrated device |
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| CN102121367A true CN102121367A (en) | 2011-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011100323574A Pending CN102121367A (en) | 2011-01-30 | 2011-01-30 | Underground steam injection sealing, heat insulation and compensation integrated device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338840A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Oil field downhole packer with strong bearing capacity |
| CN115263258A (en) * | 2022-09-19 | 2022-11-01 | 东营华辰石油装备有限公司 | Reduce calorific loss's viscous crude heat and adopt gas injection device |
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| WO2000037769A1 (en) * | 1998-12-10 | 2000-06-29 | Reslink As | Device by tools for setting of a production packer |
| US20040112597A1 (en) * | 2002-12-13 | 2004-06-17 | Syed Hamid | Packer set monitoring and compensating system and method |
| CN201173109Y (en) * | 2008-03-31 | 2008-12-31 | 尚广玉 | Heat insulation compensation apparatus for thick oil steam injection exploitation |
| CN201363120Y (en) * | 2009-03-26 | 2009-12-16 | 王如亮 | Compensating temperature-sensitive packer |
| CN201554438U (en) * | 2009-05-27 | 2010-08-18 | 曹春富 | Steam injection dual-sealing heat insulation compensation composite device |
| CN201953365U (en) * | 2011-01-30 | 2011-08-31 | 蒯泽明 | Underground steam injection, sealing, heat insulation and compensation integrated device |
-
2011
- 2011-01-30 CN CN2011100323574A patent/CN102121367A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2000037769A1 (en) * | 1998-12-10 | 2000-06-29 | Reslink As | Device by tools for setting of a production packer |
| US20040112597A1 (en) * | 2002-12-13 | 2004-06-17 | Syed Hamid | Packer set monitoring and compensating system and method |
| CN201173109Y (en) * | 2008-03-31 | 2008-12-31 | 尚广玉 | Heat insulation compensation apparatus for thick oil steam injection exploitation |
| CN201363120Y (en) * | 2009-03-26 | 2009-12-16 | 王如亮 | Compensating temperature-sensitive packer |
| CN201554438U (en) * | 2009-05-27 | 2010-08-18 | 曹春富 | Steam injection dual-sealing heat insulation compensation composite device |
| CN201953365U (en) * | 2011-01-30 | 2011-08-31 | 蒯泽明 | Underground steam injection, sealing, heat insulation and compensation integrated device |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113338840A (en) * | 2021-06-29 | 2021-09-03 | 郭洪霞 | Oil field downhole packer with strong bearing capacity |
| CN115263258A (en) * | 2022-09-19 | 2022-11-01 | 东营华辰石油装备有限公司 | Reduce calorific loss's viscous crude heat and adopt gas injection device |
| CN115263258B (en) * | 2022-09-19 | 2022-12-13 | 东营华辰石油装备有限公司 | Reduce calorific loss's viscous crude heat and adopt gas injection device |
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Application publication date: 20110713 |