CN115341870A - High-temperature steam upward-spraying prevention device for well washing and tripping of high-temperature geothermal well - Google Patents
High-temperature steam upward-spraying prevention device for well washing and tripping of high-temperature geothermal well Download PDFInfo
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- CN115341870A CN115341870A CN202211020807.2A CN202211020807A CN115341870A CN 115341870 A CN115341870 A CN 115341870A CN 202211020807 A CN202211020807 A CN 202211020807A CN 115341870 A CN115341870 A CN 115341870A
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- 238000005507 spraying Methods 0.000 title claims abstract description 31
- 230000002265 prevention Effects 0.000 title claims abstract description 30
- 238000005406 washing Methods 0.000 title claims abstract description 19
- 238000007789 sealing Methods 0.000 claims abstract description 87
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 29
- 210000004907 gland Anatomy 0.000 claims abstract description 27
- 230000005484 gravity Effects 0.000 claims abstract description 13
- 239000003638 chemical reducing agent Substances 0.000 claims description 13
- 238000011010 flushing procedure Methods 0.000 claims description 6
- 238000005553 drilling Methods 0.000 abstract description 6
- 238000006243 chemical reaction Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 9
- 239000012530 fluid Substances 0.000 description 6
- 238000010276 construction Methods 0.000 description 4
- 239000000178 monomer Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 206010053615 Thermal burn Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000000741 silica gel Substances 0.000 description 1
- 229910002027 silica gel Inorganic materials 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
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- 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
- E21B33/06—Blow-out preventers, i.e. apparatus closing around a drill pipe, e.g. annular blow-out preventers
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- 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
- E21B19/00—Handling rods, casings, tubes or the like outside the borehole, e.g. in the derrick; Apparatus for feeding the rods or cables
- E21B19/10—Slips; Spiders ; Catching devices
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- 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
- E21B23/00—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells
- E21B23/01—Apparatus for displacing, setting, locking, releasing or removing tools, packers or the like in boreholes or wells for anchoring the tools or the like
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- 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
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- 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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Pipe Accessories (AREA)
Abstract
The invention discloses a high-temperature steam upward-spraying prevention device for well washing and tripping of a high-temperature geothermal well, and relates to the technical field of high-temperature geothermal well washing steam upward-spraying prevention devices. The device comprises an upper water vapor prevention up-spraying device and a lower wellhead device, wherein the two parts are connected through reducing. The upper water vapor prevention up-spraying device comprises a gravity type sealing component and a high-temperature-resistant water retaining rubber plate, wherein the gravity type sealing component comprises an outer cylinder, an upper gland, a lower seat cushion and a sealing slip, the upper gland is connected to the upper part of the outer cylinder, the lower seat cushion is connected to the lower part of the outer cylinder, the sealing slip capable of sliding up and down along the inner conical surface of the outer cylinder is arranged in the lower seat cushion, and the high-temperature-resistant water retaining rubber plate is arranged at the top of the upper gland; the lower wellhead device comprises a tee joint and a well sealing flat valve, wherein the tee joint is connected with the well sealing flat valve, a lower well pipe and a side blowout component. When high-temperature water vapor is sprayed out in the well washing operation, the high-temperature water vapor can be effectively prevented from flowing upwards to the drilling platform, normal operation of the platform is guaranteed, meanwhile, conversion between well killing and pipe lifting operation can be rapidly achieved, and operation efficiency is greatly improved.
Description
Technical Field
The invention relates to the technical field of a high-temperature geothermal well washing water vapor upward-spraying prevention device, in particular to a high-temperature water vapor upward-spraying prevention device for high-temperature geothermal well washing and tripping.
Background
After the geothermal well is drilled into a well, generally, an oil pipe needs to be put into the geothermal well for well washing operation, in a high-temperature geothermal well, the overflow phenomenon often occurs in the well washing operation process, the temperature of fluid in a shaft rises, the density of the fluid is reduced, the overflow amount is increased, the condition of blowout finally occurs, under the action of high temperature, fluid flowing out of the well can generate a large amount of water vapor, a large amount of high-temperature water vapor mixture can be sprayed to a drilling platform along the well pipe, a worker can not work on the platform, the oil pipe is arranged in the well at the moment, the well can not be closed by using a well sealing flat valve in a wellhead device, and accidents of the wellhead can not be controlled.
The scheme that an oil pipe is lifted by force by wearing a high-temperature-resistant anti-scald garment and then a well is closed is generally adopted by the existing geological exploration team, the method can only carry out operation in a short time, and has great potential safety hazards, often scalding accidents occur, and the smooth completion of pipe lifting operation cannot be guaranteed. The special oil pipe blowout preventer is arranged in the field of oil drilling, but is designed based on oil and gas blowout prevention and is used in a high-temperature geothermal well, on one hand, a high-temperature-resistant rubber sealing assembly needs to be customized and replaced by a normal-temperature rubber sealing assembly, which usually needs a longer processing period; on the other hand, when the drill is lifted in a sealed state, the sealing rubber assembly of the drill can be quickly abraded, the wellhead cannot be controlled when the sealing rubber assembly is replaced, great potential safety hazards exist, and the drill is not suitable when the number of oil pipes in the well is large; in addition, the cost and the use cost are high, the comprehensive consideration is not suitable for the geothermal well construction, and the existing geothermal well drilling construction team is not provided with the equipment.
Therefore, in the well washing operation of the high-temperature geothermal well, how to safely, economically, conveniently and quickly control the high-temperature steam at the well mouth to be sprayed upwards ensures the safety of platform operators and successfully completes the pipe lifting operation, is a difficult problem in the construction of the high-temperature geothermal well, designs a safe, economical, simple and convenient high-temperature steam spraying preventing device, and has important significance in the construction of the high-temperature geothermal well.
Disclosure of Invention
The invention mainly aims to provide a high-temperature steam upward-spraying prevention device for well-flushing and tripping of a high-temperature geothermal well, so as to solve the problems in the prior art.
In order to solve the technical problem, the invention adopts the following technical scheme:
a high-temperature steam upward-spraying prevention device for well washing and tripping of a high-temperature geothermal well comprises an upper steam upward-spraying prevention device and a lower wellhead device, wherein the bottom of the upper steam upward-spraying prevention device is connected with the top of the lower wellhead device through a reducer union;
the upper water vapor prevention upward spraying device comprises a gravity type sealing component and a high-temperature-resistant water retaining rubber plate, the gravity type sealing component comprises an outer cylinder, an upper gland, a lower seat cushion and a sealing slip, the upper end surface of the outer cylinder is connected with the upper gland, the lower end surface of the outer cylinder is connected with the lower seat cushion, the sealing slip capable of sliding up and down along the inner conical surface of the outer cylinder is arranged in the lower seat cushion, and the high-temperature-resistant water retaining rubber plate is arranged at the top of the upper gland;
the lower wellhead device comprises a tee joint and a well-sealing flat valve, the top of the tee joint is connected with the well-sealing flat valve, the bottom of the tee joint is connected with a well pipe on the ground, and the side of the tee joint is connected with a blowout component.
Further, the urceolus is the hollow cylinder structure, the inner chamber of urceolus is for leaking hopper-shaped, sealed slips is hollow round platform structure, the outer conical surface of sealed slips with the inner conical surface of urceolus is the smooth surface, and tapering between them is unanimous.
Furthermore, the taper of the outer conical surface of the sealing slip and the taper of the inner conical surface of the outer cylinder are both 1.
Further, the sealing slip includes four sealing slip monomers, the free terminal surface of sealing slip is fan-shaped structure, the inner chamber of sealing slip divides into upper segment, middle section and hypomere, the upper segment with the hypomere is the reducing section, the upper segment is big end down's circular conical surface, the hypomere is big end down's circular conical surface, the tapering between them is 1:2.4, the inner diameter of the middle section is the same as the outer diameter of the oil pipe.
Further, when the sealing slips are in a lower sealing state, the inner diameter of the lowermost end is consistent with the inner diameter of the lower seat cushion; when the sealing slips are in an upper open state, the inner diameter of the uppermost end is consistent with the inner diameter of the upper gland.
Further, the blowout component comprises a blowout pipe and a blowout flat valve, the blowout pipe is connected to the side part of the tee joint, and the blowout flat valve is arranged on the blowout pipe.
Furthermore, the vertical drift diameter of the tee joint, the drift diameter of the well sealing flat valve and the inner diameter of the lower end of the reducer union are all the same as the inner diameter of the well pipe, and the inner diameter of the upper end of the reducer union is the same as the inner diameter of the lower seat cushion.
Furthermore, the outer ring of the upper gland is provided with ten threaded holes, and the threaded holes are fixed on the upper end face of the outer barrel through screws.
Furthermore, the inner ring of the upper gland is provided with six threaded holes, and the high-temperature-resistant water-retaining rubber plate is fixed through screws.
Furthermore, the top and the bottom of the lower cushion are respectively welded with the outer cylinder and the reducer union.
Compared with the prior art, the invention has the following beneficial effects:
1. under the action of the self gravity of the sealing slips, the sealing slips cling to the oil pipe to form sealing in the lifting process of the oil pipe, so that high-temperature water vapor can be effectively prevented from flowing upwards to a drilling platform, and normal operation of the platform is guaranteed; when the pressure is extremely high, the oil pipe can be quickly placed down, the sealing slips play a role in setting and hanging, the well mouth is sealed under the action of the self weight of the oil pipe, then well killing operation can be quickly carried out, the sealing slips can be unlocked and unsealed only by lifting after well killing is finished, pipe lifting operation is continued, the conversion between well killing operation and pipe lifting operation can be quickly realized, compared with a special blowout preventer, the operation efficiency is greatly improved, and conditions are created for lifting the oil pipe in the well as soon as possible and realizing well closing and well mouth control;
2. only the outer cylinder and the sealing slips in the whole device need to be processed, a machining factory with a lathe and a grinding machine can process the sealing slips, other parts can be purchased in hardware shops, and the whole device is simple in structure, convenient to process and install and low in processing cost;
3. the well mouth device at the middle lower part of the device is a permanent device, the outer cylinder and the sealing slips in the gravity type sealing part at the upper part are all formed by processing steel parts, the damage is avoided, the device can be used for multiple times, only the high-temperature-resistant water retaining rubber plate at the upper part is a wearing part in the device, but the structure is simple, the self-purchase rubber plate can be simply processed at a well site, and the use cost of the whole device is very low.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a cross-sectional view of a gravity seal assembly of the present invention.
Figure 3 is a top view of the sealing slips of the present invention in a sealed condition.
Figure 4 is a cross-sectional view of the sealing slips of the present invention in an open position.
Figure 5 is a top view of the sealing slips of the present invention in an open position.
Figure 6 is a top view of the upper gland of the present invention.
FIG. 7 is a top view of the outer cylinder of the present invention.
FIG. 8 is a top view of the lower seat cushion of the present invention.
Fig. 9 is a schematic view of the gravity seal assembly of the present invention in operation.
The device comprises an outer cylinder 1, a sealing slip 2, a sealing slip monomer 21, a lower seat cushion 3, an upper gland 4, a high-temperature-resistant water retaining rubber plate 5, a variable-diameter joint 6, a flange 7, a well sealing flat valve 8, a tee joint 9, a blowout flat valve 10, a blowout pipe 11, a well pipe 12, an oil pipe 13 and an oil pipe joint 14.
Detailed Description
The technical solution of the present invention is further illustrated by the accompanying drawings and examples.
The oil pipe commonly used for well washing in reality comprises
In equal specification, the invention is used for improving
And (4) designing the oil pipe, and if the oil pipe is used for lifting other types of oil pipes, carrying out scaling in the same proportion during processing.
With reference to fig. 1 to 9, the invention provides a high-temperature steam upward-spraying prevention device for high-temperature geothermal well washing and tripping, which comprises an upper steam upward-spraying prevention device and a lower wellhead device, wherein the bottom of the upper steam upward-spraying prevention device is connected with the top of the lower wellhead device through a reducer union 6,
the upper water vapor prevention upward-spraying device comprises a gravity type sealing part and a high-temperature-resistant water retaining rubber plate 5, the gravity type sealing part comprises an outer barrel 1, an upper gland 4, a lower seat cushion 3 and a sealing slip 2, the upper end face of the outer barrel 1 is connected with the upper gland 4, the lower end face of the outer barrel is connected with the lower seat cushion 3, the sealing slip 2 is arranged in the lower end face of the outer barrel, and the high-temperature-resistant water retaining rubber plate 5 is arranged at the top of the upper gland 4. In this embodiment, the outer ring of the upper gland 4 is provided with ten round holes, the upper end surface of the outer barrel 1 is correspondingly provided with ten threaded holes, the diameters of the threaded holes of the upper gland 4 and the outer barrel 1 are both 6mm, and the upper gland 4 and the outer barrel 1 are connected through screws. The inner ring of the upper gland 4 is provided with six threaded holes which are connected with the high-temperature-resistant water-retaining rubber plate 5 through screws, the diameter of each threaded hole is 10mm, the high-temperature-resistant water-retaining rubber plate 5 is composed of two harder semi-circular thick silica gel plates, and the inner diameter of the high-temperature-resistant water-retaining rubber plate is slightly smaller than the outer diameter of an oil pipe needing to be lifted. The top and the bottom of the lower seat cushion 3 are respectively welded with the outer cylinder 1 and the reducer union 6, and the outer cylinder 1 and the sealing slip 2 are both made of steel parts and are not easy to damage.
The lower wellhead device comprises a tee joint 9 and a well-sealing flat valve 8, the top of the tee joint 9 is connected with the well-sealing flat valve 8, the bottom of the tee joint is connected with a well pipe 12 on the ground, and the side of the tee joint is connected with a blow-off pipe 11. In this embodiment, a blowout plate valve 10 is arranged on the blowout pipe 11, the top of the tee joint 9 is connected with the well-plugging plate valve 8 through a flange 7, and the bottom of the tee joint 9 is connected with the well pipe 12 through the flange 7.
Preferably, the outer tube 1 is a hollow cylinder structure, the inner cavity of the outer tube 1 is funnel-shaped, that is, the inner cavity is set to be a conical surface with a large upper part and a small lower part, the sealing slip 2 is a hollow round platform structure, the outer conical surface of the sealing slip 2 and the inner conical surface of the outer tube 1 are smooth surfaces, and the tapers of the two are consistent and are 1.9. The sealing slips 2 can slide downwards along the inner conical surface of the outer cylinder 1 under the action of gravity to form a sealing state, or are driven by an oil pipe joint in the lifting process of the oil pipe and move upwards along the inner conical surface of the outer cylinder 1 to form an opening state, so that the oil pipe joint can conveniently pass through.
Preferably, the sealing slip 2 includes four sealing slip monomers 21, the terminal surface of sealing slip monomer 21 is fan-shaped structure, the inner chamber of sealing slip 2 divide into upper segment, middle section and hypomere, the upper segment with the hypomere is the reducing section, the upper segment is the circular conical surface of big end down, the hypomere is the circular conical surface of big end down, the tapering of both is 1:2.4, the inner diameter of the middle section is the same as the outer diameter of the oil pipe. The four sealing slip single bodies 21 are identical in structure and form a complete hollow circular truncated cone.
Preferably, when the sealing slip 2 is in a lower sealing state, the inner diameter of the lowermost end is consistent with the inner diameter of the lower seat cushion 3; when the sealing slip 2 is in an upper open state, the inner diameter of the uppermost end is consistent with that of the upper gland 4, so that the tubing coupling can be prevented from being blocked when passing through.
Preferably, the vertical drift diameter of the tee joint 9, the drift diameter of the well sealing flat valve 8 and the inner diameter of the lower end of the reducer union 6 are all the same as the inner diameter of the well pipe 12, and the inner diameter of the upper end of the reducer union 6 is the same as the inner diameter of the lower seat cushion 3, so that subsequent equipment can be conveniently put into the well.
The working principle and the installation and use process are as follows:
when the geothermal well washing operation with high-temperature water spraying risk exists, firstly, a tee joint 9, a well sealing flat valve 8, a flange 7, a reducer union 6, a lower seat cushion 3 and an outer cylinder 1 in the device are arranged on a well pipe 12 and connected with a blowout flat valve 10 and a blowout pipe 11; and meanwhile, when the well is washed by the oil pipe, the check valve is arranged at the bottom of the oil pipe, so that high-temperature water vapor is prevented from being sprayed out of the pipe column.
When the wellhead overflows, the blowout plate valve 10 is opened, so that the overflowing mixed fluid flows to a designed position through the blowout pipe 11; meanwhile, the sealing slip 2 is rapidly placed into the outer cylinder 1, the upper gland 4 is fixed on the outer cylinder 1 by screws, and the high-temperature-resistant water-retaining rubber plate 5 is fixed on the upper gland 4 by screws. The high-temperature fluid sprayed out of the shaft flows out through the blowout plate valve 10 and the blowout pipe 11, part of the upward high-temperature water vapor is blocked by the sealing slips 2 and flows out through the blowout plate valve 10 and the blowout pipe 11 after falling back, so that the high-temperature water vapor is effectively prevented from being sprayed to the drilling platform along the pipe column during pipe lifting operation, the safety of the platform operation work is guaranteed, the pipe lifting operation is guaranteed to be carried out smoothly, and conditions are provided for subsequent well shut-in.
The high-temperature-resistant water-retaining rubber plate 5 can block high-temperature water vapor which flows upwards through a fine gap between the sealing slips 2 and the oil pipe 13 in the normal oil pipe lifting operation process or high-temperature water vapor which flows upwards when the sealing slips 2 are in a transient open state when an oil pipe joint passes through; meanwhile, if high-temperature fluid sprayed out of a shaft still has high pressure after being decompressed by the blowout plate valve 10, when the sealing slips 2 are pushed to move upwards, if the upward movement water vapor quantity is small, after the high-temperature resistant water-retaining rubber plate 5 blocks the high-temperature resistant water-retaining rubber plate, the platform work is not influenced, the oil pipe lifting operation of the platform can be normally carried out, if the upward movement quantity is large, the oil pipe lifting operation of the platform is influenced, the oil pipe can be rapidly lowered, the oil pipe joint drives the sealing slips 2 to move downwards, the well mouth is sealed under the self-weight effect of the oil pipe, the well killing operation can be rapidly circulated, after the upward movement quantity is reduced, the oil pipe can be unlocked by lifting the oil pipe, the pipe lifting operation can be rapidly recovered, and the complex process of opening and closing a blowout preventer is not needed.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the technical scope of the present invention, so that any minor modifications, equivalent changes and modifications made to the above embodiment according to the technical spirit of the present invention will still fall within the technical scope of the present invention.
Claims (10)
1. The high-temperature steam upward-spraying prevention device for the well-washing and tripping of the high-temperature geothermal well is characterized by comprising an upper steam upward-spraying prevention device and a lower wellhead device, wherein the bottom of the upper steam upward-spraying prevention device is connected with the top of the lower wellhead device through a reducer union;
the upper water vapor prevention upward spraying device comprises a gravity type sealing component and a high-temperature-resistant water retaining rubber plate, the gravity type sealing component comprises an outer cylinder, an upper gland, a lower seat cushion and a sealing slip, the upper end surface of the outer cylinder is connected with the upper gland, the lower end surface of the outer cylinder is connected with the lower seat cushion, the sealing slip capable of sliding up and down along the inner conical surface of the outer cylinder is arranged in the lower seat cushion, and the high-temperature-resistant water retaining rubber plate is arranged at the top of the upper gland;
the lower wellhead device comprises a tee joint and a well-sealing flat valve, the top of the tee joint is connected with the well-sealing flat valve, the bottom of the tee joint is connected with a well pipe on the ground, and the side of the tee joint is connected with a blowout component.
2. The high-temperature steam upward-spraying prevention device for well washing and tripping of the high-temperature geothermal well according to claim 1, wherein the outer cylinder is of a hollow cylindrical structure, the inner cavity of the outer cylinder is funnel-shaped, the sealing slips are of a hollow circular truncated cone structure, the outer conical surface of each sealing slip and the inner conical surface of the outer cylinder are smooth surfaces, and the tapers of the sealing slips and the inner conical surface of the outer cylinder are consistent.
3. The high-temperature steam upward-spraying prevention device for the well washing and the tripping of the high-temperature geothermal well, according to claim 2, is characterized in that the conicity of the outer conical surface of the sealing slip and the inner conical surface of the outer cylinder are both 1.
4. The high-temperature steam upward-spraying prevention device for the well-flushing and the tripping of the high-temperature geothermal well according to claim 2, wherein the sealing slip comprises four sealing slip single bodies, the end surfaces of the sealing slip single bodies are of a fan-shaped structure, the inner cavity of the sealing slip is divided into an upper section, a middle section and a lower section, the upper section and the lower section are both diameter-variable sections, the upper section is a conical surface with a large upper part and a small lower part, the lower section is a conical surface with a small upper part and a large lower part, and the conicity of the two sections is 1:2.4, the inner diameter of the middle section is the same as the outer diameter of the oil pipe.
5. The high-temperature steam upward-spraying prevention device for the well-flushing and the tripping of the high-temperature geothermal well, according to claim 4, is characterized in that when the sealing slips are in a lower sealing state, the inner diameter of the lowest end of the sealing slips is consistent with the inner diameter of the lower seat cushion; when the sealing slips are in an upper open state, the inner diameter of the uppermost end is consistent with the inner diameter of the upper gland.
6. The device for preventing the high-temperature steam up-flow for the well-flushing and the tripping of the high-temperature geothermal well according to claim 1, wherein the blowout component comprises a blowout pipe and a blowout plate valve, the blowout pipe is connected to the side part of the tee joint, and the blowout plate valve is arranged on the blowout pipe.
7. The high-temperature steam upward-spraying prevention device for the well washing and tripping of the high-temperature geothermal well as defined in claim 1, wherein the vertical drift diameter of the tee joint, the drift diameter of the well-sealing flat valve and the inner diameter of the lower end of the reducer union are all the same as the inner diameter of the well pipe, and the inner diameter of the upper end of the reducer union is the same as the inner diameter of the lower seat cushion.
8. The high-temperature steam upward-spraying prevention device for the well-flushing and the tripping of the high-temperature geothermal well as defined in claim 1, wherein the outer ring of the upper gland is provided with ten threaded holes and is fixed on the upper end surface of the outer cylinder through screws.
9. The high-temperature steam upward-spraying prevention device for the well-flushing and tripping of the high-temperature geothermal well as defined in claim 8, wherein the inner ring of the upper gland is provided with six threaded holes, and the high-temperature-resistant water-retaining rubber plate is fixed through screws.
10. The high-temperature steam upward-spraying prevention device for well washing and tripping of the high-temperature geothermal well according to claim 1, wherein the top and the bottom of the lower cushion are respectively welded with the outer cylinder and the reducer union.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211020807.2A CN115341870B (en) | 2022-08-24 | 2022-08-24 | High temperature geothermal well washes well and draws in and spouts device with preventing high temperature steam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211020807.2A CN115341870B (en) | 2022-08-24 | 2022-08-24 | High temperature geothermal well washes well and draws in and spouts device with preventing high temperature steam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115341870A true CN115341870A (en) | 2022-11-15 |
| CN115341870B CN115341870B (en) | 2023-07-21 |
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| CN202211020807.2A Active CN115341870B (en) | 2022-08-24 | 2022-08-24 | High temperature geothermal well washes well and draws in and spouts device with preventing high temperature steam |
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2022
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|---|---|---|---|---|
| CN200989184Y (en) * | 2006-12-30 | 2007-12-12 | 卢予北 | Well packing device |
| CN202284459U (en) * | 2011-05-12 | 2012-06-27 | 中国石油化工集团公司 | Rotary sealing device for wellhead of oil well |
| CN102767345A (en) * | 2012-07-25 | 2012-11-07 | 胜利油田东胜精攻石油开发集团股份有限公司 | Multifunctional sucker rod hanging blowout preventer |
| CN105781469A (en) * | 2016-03-30 | 2016-07-20 | 天津大港油田石油工程研究院钻采技术开发公司 | Gravity self-sealed blowout rescue device |
| CN205895195U (en) * | 2016-05-19 | 2017-01-18 | 建湖县鸿达阀门管件有限公司 | Multi -functional casing head of slips dabber interchangeable formula |
| US20180283114A1 (en) * | 2017-03-31 | 2018-10-04 | Cameron International Corporation | Seal assembly running tools and methods |
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| CN115341870B (en) | 2023-07-21 |
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