CN113250667A - Thermal recovery wellhead assembly - Google Patents
Thermal recovery wellhead assembly Download PDFInfo
- Publication number
- CN113250667A CN113250667A CN202110668420.7A CN202110668420A CN113250667A CN 113250667 A CN113250667 A CN 113250667A CN 202110668420 A CN202110668420 A CN 202110668420A CN 113250667 A CN113250667 A CN 113250667A
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- oil
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- thermal recovery
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- 238000011084 recovery Methods 0.000 title claims abstract description 32
- 238000007789 sealing Methods 0.000 claims abstract description 66
- 239000000346 nonvolatile oil Substances 0.000 claims abstract description 20
- 239000003921 oil Substances 0.000 claims description 72
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 17
- YCKRFDGAMUMZLT-UHFFFAOYSA-N Fluorine atom Chemical compound [F] YCKRFDGAMUMZLT-UHFFFAOYSA-N 0.000 claims description 4
- 229910052731 fluorine Inorganic materials 0.000 claims description 4
- 239000011737 fluorine Substances 0.000 claims description 4
- 238000001816 cooling Methods 0.000 abstract description 3
- 230000002411 adverse Effects 0.000 abstract description 2
- 230000001737 promoting effect Effects 0.000 abstract 1
- 230000000630 rising effect Effects 0.000 abstract 1
- 238000005192 partition Methods 0.000 description 9
- 230000000694 effects Effects 0.000 description 5
- 238000010438 heat treatment Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 230000008602 contraction Effects 0.000 description 4
- 239000000295 fuel oil Substances 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 4
- 239000010779 crude oil Substances 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000010795 Steam Flooding Methods 0.000 description 1
- 238000010793 Steam injection (oil industry) Methods 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000005465 channeling Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000008400 supply water Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B34/00—Valve arrangements for boreholes or wells
- E21B34/02—Valve arrangements for boreholes or wells in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/06—Measuring temperature or pressure
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geophysics (AREA)
- Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)
Abstract
The invention provides a thermal recovery wellhead device, and relates to the technical field of oilfield exploitation. The thermal recovery wellhead device comprises a wellhead four-way, wherein a bottom pipe is arranged at the bottom of the wellhead four-way, a flange sheet is arranged at the bottom of the bottom pipe, the flange sheet is connected with a bottom flange through a bolt, the bottom of the bottom flange is fixedly connected to the top end of a fixed oil pipe, a sealing element is arranged between the fixed oil pipe and the bottom pipe, and one side of the wellhead four-way is connected with a temperature regulator through a bypass pipe; the sealing element comprises a sealing washer, a herringbone sealing ring, a fixed backing ring and a circular tube. One end through the second valve is connected with steam generator, prevents that viscosity from rising after the viscous crude cooling, can make the thermal recovery well head be suitable for the adverse circumstances that weather temperature is lower, and application scope is wide, extrudees the herringbone sealing washer through the pipe, makes the pipe top sealed, can adapt to expend with heat and contract with cold environment, and the thermal recovery well head leakproofness obtains promoting.
Description
Technical Field
The invention relates to the technical field of oilfield exploitation, in particular to a thermal recovery wellhead device.
Background
The heavy oil occupies a large proportion in oil and gas resources, so that the enhancement of heavy oil recovery and the improvement of recovery ratio become the current research hotspots, but the heavy oil is different from the conventional crude oil, mainly has large viscosity and is difficult to recover by using a conventional method, so special technological measures are needed, thermal oil recovery is the main technology of the current heavy oil recovery, a thermal oil recovery method points to an oil reservoir to inject hot fluid or leads the oil reservoir to be combusted in situ to form mobile heat flow, and the method mainly depends on the utilization of heat energy to reduce the viscosity of the crude oil so as to increase the flow capacity of the crude oil. Thermal oil recovery mainly comprises several modes of steam huff and puff, steam flooding, in-situ oil combustion, hot water flooding and the like, wherein when steam is adopted for heat energy injection, a steam generator (such as a boiler) is generally used for generating high-temperature steam, and a thermal production wellhead device is ground control equipment necessary for steam injection.
Chinese patent document CN109488244B discloses a channeling-preventing multifunctional compensation thermal recovery wellhead, which comprises a bottom flange welded with a surface casing, and is characterized in that: a first compensation device is arranged between the elbow and the first valve of the pipeline, and a second compensation device is arranged between the bypass pipeline of the wellhead four-way and the second valve of the pipeline. The invention solves the problem of fracture of ground pipelines caused by upward channeling of a wellhead and prevents liquid and gas from leaking out, thereby protecting the environment. But when implementing in this patent, when external environment temperature was crossed lowly, viscous crude took place to bond at the pipeline inner wall easily, influenced the transmission, can't be applicable to the comparatively complicated place of climatic environment to the thermal recovery well head adopts the rubber circle to seal usually, is influenced by thermal expansion and cold contraction easily, and is sealed unreliable.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a thermal recovery wellhead device, which solves the problems that thick oil is solidified at a wellhead at low temperature and the wellhead is unreliable in sealing.
In order to achieve the purpose, the invention is realized by the following technical scheme: the thermal recovery wellhead device comprises a wellhead four-way, wherein a bottom pipe is arranged at the bottom of the wellhead four-way, a flange sheet is arranged at the bottom of the bottom pipe, the flange sheet is connected with a bottom flange through a bolt, the bottom of the bottom flange is fixedly connected to the top end of a fixed oil pipe, a sealing element is arranged between the fixed oil pipe and the bottom pipe, and one side of the wellhead four-way is connected with a temperature regulator through a bypass pipe;
the sealing element comprises a sealing washer, a herringbone sealing ring, a fixed backing ring and a round pipe, the outer side of the bottom of the round pipe is in threaded connection with the inside of the top end of the fixed oil pipe, the bottom end of the round pipe is adjacent to the top of the fixed backing ring, the outer side of the fixed backing ring is fixedly connected with the inner wall of the fixed oil pipe, the sealing washer is fixedly connected between the flange sheet and the bottom flange, and one side of the herringbone sealing ring is fixedly connected with the inside of the bottom end of the bottom pipe;
the temperature regulator comprises an oil inlet flange pipe, an oil outlet flange pipe, a heat exchanger shell and a heat exchange pipe, wherein one end of the heat exchanger shell is connected to one end of the bypass pipe through the oil inlet flange pipe, an input pipe is fixedly connected to the top side of the heat exchanger shell, a second valve is arranged at one end of the input pipe, an output pipe is fixedly connected to the bottom side of the heat exchanger shell, partition plates are fixedly connected to two sides of the inner portion of the heat exchanger shell, two ends of the heat exchange pipe penetrate through the partition plates respectively, and one end of the oil outlet flange pipe is fixedly connected to the other end of the heat exchanger shell.
Preferably, the herringbone sealing ring and the sealing washer are made of fluorine rubber which is integrally formed, and a through hole is formed in the sealing washer.
Preferably, one end of the oil outlet flange pipe is connected with an oil pipeline through a first connecting pipe, and one end of the first connecting pipe is provided with a first valve.
Preferably, a steam generator is arranged at one end of the second valve, and one end of the output pipe is connected with the steam generator through a return pipe.
Preferably, one end of the second valve is fixedly connected with a second connecting pipe, one end of the second connecting pipe is provided with a water tank, and the outer side of the second connecting pipe is provided with a water pump.
Preferably, a high-temperature pressure sensor is arranged in the middle of the bypass pipe.
Preferably, a temperature indicator is arranged in the middle of the oil outlet flange pipe.
The working principle is as follows: the sealing washer is fixedly connected between the flange sheet and the bottom flange, one side of the herringbone sealing ring is fixedly connected into the bottom end of the bottom pipe, and the herringbone sealing ring is extruded through the round pipe, so that the top of the round pipe is sealed, the environment with expansion caused by heat and contraction caused by cold can be adapted, the sealing performance is improved, and the sealing performance of the wellhead four-way connection can be improved; in viscous crude passed through oil feed flange pipe entering heat exchange tube, between two division boards, the outside of heat exchange tube can form the cavity, is convenient for let in cold or hot medium to the cavity through the input pipe fitting and carries out the heat transfer, can adjust the viscous crude temperature, changes its viscosity, is convenient for adapt to different environment to reply complicated external environment, improve transmission efficiency, improve the oily effect of producing of thermal recovery well head.
The invention provides a thermal production wellhead assembly. The method has the following beneficial effects:
1. according to the invention, the steam generator is connected with one end of the second valve, so that high-temperature steam can be used for heating and exploiting thick oil, and also can be used for heating thick oil at a thermal exploitation well mouth, the viscosity of the thick oil is prevented from being increased after the thick oil is cooled, oil blockage is prevented, the thermal exploitation well mouth can be suitable for severe environments with lower weather temperature, the adaptability is strong, and the application range is wide.
2. According to the invention, water is pumped by the water pump, water is supplied into the heat exchanger shell through the water tank and the second connecting pipe, and when the ambient temperature is too high or the temperature of the thickened oil is too high, the effects of reducing temperature and pressure can be achieved, so that oil leakage is prevented.
3. According to the invention, the sealing washer is fixedly connected between the flange sheet and the bottom flange, one side of the herringbone sealing ring is fixedly connected in the bottom end of the bottom pipe, and the herringbone sealing ring is extruded by the round pipe, so that the top of the round pipe is sealed, the sealing device can adapt to the environment of expansion with heat and contraction with cold, and the sealing performance of a thermal recovery wellhead is improved.
Drawings
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a second embodiment of the present invention;
FIG. 3 is a schematic view of the sealing member and the barrel of the present invention;
FIG. 4 is a schematic view of a seal of the present invention;
FIG. 5 is a schematic view of the internal structure of the thermostat of the present invention;
fig. 6 is a front view showing an internal structure of the temperature regulator of the present invention.
Wherein, 1, the wellhead cross joint; 2. a bypass pipe; 3. a bottom tube; 4. a flange sheet; 5. a bottom flange; 6. fixing the oil pipe; 7. a seal member; 8. an output pipe; 9. a return pipe; 10. a temperature regulator; 11. an oil outlet flange pipe; 12. an oil pipeline; 13. a first valve; 14. a first connecting pipe; 15. a temperature indicator; 16. a second valve; 17. a steam generator; 18. an input pipe fitting; 19. an oil inlet flange pipe; 20. a high temperature pressure sensor; 21. a water tank; 22. a water pump; 23. a second connecting pipe; 24. a fixed backing ring; 25. a circular tube; 26. a herringbone sealing ring; 27. a sealing gasket; 28. a heat exchange pipe; 29. a partition plate; 30. a heat exchanger housing.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The first embodiment is as follows:
as shown in fig. 1, 3, 4, 5, and 6, an embodiment of the invention provides a thermal recovery wellhead device, which includes a wellhead cross 1, a bottom pipe 3 is arranged at the bottom of the wellhead cross 1, a flange plate 4 is arranged at the bottom of the bottom pipe 3, the flange plate 4 is connected with a bottom flange 5 through a bolt, the bottom of the bottom flange 5 is fixedly connected to the top end of a fixed oil pipe 6, a sealing member 7 is arranged between the fixed oil pipe 6 and the bottom pipe 3, the sealing member 7 can improve the sealing performance between the fixed oil pipe 6 and the bottom pipe 3, similarly, the sealing member 7 is arranged at four ends of the wellhead cross 1, the sealing performance of the wellhead cross 1 can be improved, one side of the wellhead cross 1 is connected with a temperature regulator 10 through a bypass pipe 2, and the temperature of thick oil can be regulated through the temperature regulator 10, so as to cope with a complex external environment, and improve the transmission efficiency;
the sealing element 7 comprises a sealing washer 27, a herringbone sealing ring 26, a fixed backing ring 24 and a round pipe 25, the outer side of the bottom of the round pipe 25 is in threaded connection with the inside of the top end of the fixed oil pipe 6, the top of the fixed backing ring 24 is adjacent to the bottom end of the round pipe 25, a rubber pad can be further mounted at the top of the fixed backing ring 24 to seal the bottom end of the round pipe 25, the outer side of the fixed backing ring 24 is fixedly connected to the inner wall of the fixed oil pipe 6, the sealing washer 27 is fixedly connected between the flange sheet 4 and the bottom flange 5, one side of the herringbone sealing ring 26 is fixedly connected with the inside of the bottom end of the bottom pipe 3, the herringbone sealing ring 26 is extruded through the round pipe 25 to seal the top of the round pipe 25, the sealing element can adapt to expansion and contraction environments, and the sealing performance is improved;
the temperature regulator 10 comprises an oil inlet flange pipe 19, an oil outlet flange pipe 11, a heat exchanger shell 30 and a heat exchange pipe 28, one end of the heat exchanger shell 30 is connected to one end of the bypass pipe 2 through the oil inlet flange pipe 19, the top side of the heat exchanger shell 30 is fixedly connected with an input pipe 18, one end of the input pipe 18 is provided with a second valve 16, the bottom side of the heat exchanger shell 30 is fixedly connected with an output pipe 8, two sides inside the heat exchanger shell 30 are fixedly connected with partition plates 29, two ends of the heat exchange pipe 28 respectively penetrate through the two partition plates 29, one end of the oil outlet flange pipe 11 is fixedly connected to the other end of the heat exchanger shell 30, thick oil enters the heat exchange pipe 28 through the oil inlet flange pipe 19, a cavity can be formed between the two partition plates 29 and outside the heat exchange pipe 28, cold or hot media can be conveniently introduced into the cavity through the input pipe 18 for heat exchange, and the temperature of the thick oil is regulated, the viscosity of the oil is changed, the oil is convenient to adapt to different environments, and the oil production effect of a thermal recovery wellhead is improved.
The herringbone sealing ring 26 and the sealing washer 27 are made of fluorine rubber which is integrally formed, and a through hole is formed in the sealing washer 27, so that the herringbone sealing ring is convenient to mount and use.
One end of the oil outlet flange pipe 11 is connected with an oil pipeline 12 through a first connecting pipe 14, one end of the first connecting pipe 14 is provided with a first valve 13, and thick oil can enter the oil pipeline 12 through the first connecting pipe 14.
The middle part of the bypass pipe 2 is provided with a high temperature pressure sensor 20 for detecting the pressure in the pipe.
The middle part of the oil outlet flange pipe 11 is provided with a temperature indicator 15 for detecting the oil temperature.
Example two:
as shown in fig. 2, 3, 4, 5, and 6, an embodiment of the invention provides a thermal recovery wellhead device, which includes a wellhead cross 1, a bottom pipe 3 is arranged at the bottom of the wellhead cross 1, a flange plate 4 is arranged at the bottom of the bottom pipe 3, the flange plate 4 is connected with a bottom flange 5 through a bolt, the bottom of the bottom flange 5 is fixedly connected to the top end of a fixed oil pipe 6, a sealing element 7 is arranged between the fixed oil pipe 6 and the bottom pipe 3, the sealing element 7 can improve the sealing performance between the fixed oil pipe 6 and the bottom pipe 3, one side of the wellhead cross 1 is connected with a temperature regulator 10 through a bypass pipe 2, and the temperature of thick oil can be regulated through the temperature regulator 10 to cope with a complex external environment and improve the transmission efficiency;
the sealing element 7 comprises a sealing washer 27, a herringbone sealing ring 26, a fixed backing ring 24 and a round pipe 25, the outer side of the bottom of the round pipe 25 is in threaded connection with the inside of the top end of the fixed oil pipe 6, the top of the fixed backing ring 24 is adjacent to the bottom end of the round pipe 25, a rubber pad can be further mounted at the top of the fixed backing ring 24 to seal the bottom end of the round pipe 25, the outer side of the fixed backing ring 24 is fixedly connected to the inner wall of the fixed oil pipe 6, the sealing washer 27 is fixedly connected between the flange sheet 4 and the bottom flange 5, and one side of the herringbone sealing ring 26 is fixedly connected with the inside of the bottom end of the bottom pipe 3;
the temperature regulator 10 comprises an oil inlet flange pipe 19, an oil outlet flange pipe 11, a heat exchanger shell 30 and a heat exchange pipe 28, one end of the heat exchanger shell 30 is connected to one end of the bypass pipe 2 through the oil inlet flange pipe 19, the top side of the heat exchanger shell 30 is fixedly connected with an input pipe 18, one end of the input pipe 18 is provided with a second valve 16, the bottom side of the heat exchanger shell 30 is fixedly connected with an output pipe 8, two sides inside the heat exchanger shell 30 are fixedly connected with partition plates 29, two ends of the heat exchange pipe 28 respectively penetrate through the two partition plates 29, one end of the oil outlet flange pipe 11 is fixedly connected to the other end of the heat exchanger shell 30, thick oil enters the heat exchange pipe 28 through the oil inlet flange pipe 19, a cavity can be formed between the two partition plates 29 and outside the heat exchange pipe 28, cold or hot media can be conveniently introduced into the cavity through the input pipe 18 for heat exchange, and the temperature of the thick oil is regulated, the viscosity of the oil is changed, the oil is convenient to adapt to different environments, and the oil production effect of a thermal recovery wellhead is improved.
The herringbone sealing ring 26 and the sealing washer 27 are made of fluorine rubber which is integrally formed, and a through hole is formed in the sealing washer 27, so that the herringbone sealing ring is convenient to mount and use.
One end of the oil outlet flange pipe 11 is connected with an oil pipeline 12 through a first connecting pipe 14, one end of the first connecting pipe 14 is provided with a first valve 13, and thick oil can enter the oil pipeline 12 through the first connecting pipe 14.
One end fixedly connected with second connecting pipe 23 of second valve 16, the one end of second connecting pipe 23 is provided with water tank 21, the outside of second connecting pipe 23 is provided with water pump 22, pass through back flow 9 with the one end of delivery pipe fitting 8 and connect water tank 21, water pump 22 draws water, supply water in to heat exchanger shell 30 through water tank 21 and second connecting pipe 23, when ambient temperature was too high or the viscous oil temperature was too high, can play the cooling step-down effect, prevent to leak oil.
The middle part of the bypass pipe 2 is provided with a high temperature pressure sensor 20 for detecting the pressure in the pipe.
The middle part of the oil outlet flange pipe 11 is provided with a temperature indicator 15 for detecting the oil temperature.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (7)
1. Thermal recovery wellhead assembly, including well head cross (1), its characterized in that: a bottom pipe (3) is arranged at the bottom of the wellhead four-way (1), a flange sheet (4) is arranged at the bottom of the bottom pipe (3), the flange sheet (4) is connected with a bottom flange (5) through a bolt, the bottom of the bottom flange (5) is fixedly connected to the top end of a fixed oil pipe (6), a sealing element (7) is arranged between the fixed oil pipe (6) and the bottom pipe (3), and one side of the wellhead four-way (1) is connected with a temperature regulator (10) through a bypass pipe (2);
the sealing element (7) comprises a sealing washer (27), a herringbone sealing washer (26), a fixed backing ring (24) and a round pipe (25), the outer side of the bottom of the round pipe (25) is in threaded connection with the inside of the top end of the fixed oil pipe (6), the bottom end of the round pipe (25) adjacent to the top of the fixed backing ring (24) is fixedly connected with the inner wall of the fixed oil pipe (6), the sealing washer (27) is fixedly connected between the flange sheet (4) and the bottom flange (5), and one side of the herringbone sealing washer (26) is fixedly connected with the inside of the bottom end of the bottom pipe (3);
temperature regulator (10) are including oil feed flange pipe (19), oil outlet flange pipe (11), heat exchanger shell (30) and heat exchange tube (28), the one end of heat exchanger shell (30) is passed through oil feed flange pipe (19) and is connected the one end at bypass pipe (2), the top side fixedly connected with input pipe fitting (18) of heat exchanger shell (30), the one end of input pipe fitting (18) is provided with second valve (16), the bottom side fixedly connected with output pipe fitting (8) of heat exchanger shell (30), the equal fixedly connected with division board (29) in inside both sides of heat exchanger shell (30), two are run through respectively at the both ends of heat exchange tube (28) division board (29), the one end fixed connection of oil outlet flange pipe (11) is at the other end of heat exchanger shell (30).
2. The thermal recovery wellhead assembly of claim 1, wherein: the herringbone sealing ring (26) and the sealing washer (27) are made of fluorine rubber which is integrally formed, and a through hole is formed in the sealing washer (27).
3. The thermal recovery wellhead assembly of claim 1, wherein: one end of the oil outlet flange pipe (11) is connected with an oil pipeline (12) through a first connecting pipe (14), and one end of the first connecting pipe (14) is provided with a first valve (13).
4. The thermal recovery wellhead assembly of claim 1, wherein: one end of the second valve (16) is provided with a steam generator (17), and one end of the output pipe (8) is connected with the steam generator (17) through a return pipe (9).
5. The thermal recovery wellhead assembly of claim 1, wherein: one end of the second valve (16) is fixedly connected with a second connecting pipe (23), one end of the second connecting pipe (23) is provided with a water tank (21), and the outer side of the second connecting pipe (23) is provided with a water pump (22).
6. The thermal recovery wellhead assembly of claim 1, wherein: and a high-temperature pressure sensor (20) is arranged in the middle of the bypass pipe (2).
7. The thermal recovery wellhead assembly of claim 1, wherein: and a temperature indicator (15) is arranged in the middle of the oil outlet flange pipe (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110668420.7A CN113250667B (en) | 2021-06-17 | 2021-06-17 | Thermal recovery wellhead assembly |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110668420.7A CN113250667B (en) | 2021-06-17 | 2021-06-17 | Thermal recovery wellhead assembly |
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| Publication Number | Publication Date |
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| CN113250667A true CN113250667A (en) | 2021-08-13 |
| CN113250667B CN113250667B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110668420.7A Active CN113250667B (en) | 2021-06-17 | 2021-06-17 | Thermal recovery wellhead assembly |
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| CN (1) | CN113250667B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110278005A1 (en) * | 2009-01-28 | 2011-11-17 | Cameron International Corporation | Method and system for temporarily locking a tubular |
| CN202788725U (en) * | 2012-09-21 | 2013-03-13 | 江苏扬标石油机械有限公司 | Metal hard sealing oil tube head |
| CN103015939A (en) * | 2012-12-21 | 2013-04-03 | 东营鑫华莲石油机械有限公司 | Protective device for thermal recovery well mouth |
| CN204804792U (en) * | 2015-05-29 | 2015-11-25 | 辽宁新科石油设备制造有限公司 | Nitrogen heater is annotated to oil well |
| CN106812493A (en) * | 2015-12-02 | 2017-06-09 | 中国石油天然气股份有限公司 | Multi-pipe thermal recovery wellhead device |
-
2021
- 2021-06-17 CN CN202110668420.7A patent/CN113250667B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20110278005A1 (en) * | 2009-01-28 | 2011-11-17 | Cameron International Corporation | Method and system for temporarily locking a tubular |
| CN202788725U (en) * | 2012-09-21 | 2013-03-13 | 江苏扬标石油机械有限公司 | Metal hard sealing oil tube head |
| CN103015939A (en) * | 2012-12-21 | 2013-04-03 | 东营鑫华莲石油机械有限公司 | Protective device for thermal recovery well mouth |
| CN204804792U (en) * | 2015-05-29 | 2015-11-25 | 辽宁新科石油设备制造有限公司 | Nitrogen heater is annotated to oil well |
| CN106812493A (en) * | 2015-12-02 | 2017-06-09 | 中国石油天然气股份有限公司 | Multi-pipe thermal recovery wellhead device |
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| Publication number | Publication date |
|---|---|
| CN113250667B (en) | 2021-11-12 |
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