CN114961624B - A Christmas tree wellhead sealing device for preventing crude oil leakage - Google Patents
A Christmas tree wellhead sealing device for preventing crude oil leakage Download PDFInfo
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- CN114961624B CN114961624B CN202210651012.5A CN202210651012A CN114961624B CN 114961624 B CN114961624 B CN 114961624B CN 202210651012 A CN202210651012 A CN 202210651012A CN 114961624 B CN114961624 B CN 114961624B
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- oil
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- 238000007789 sealing Methods 0.000 title claims abstract description 47
- 241000191291 Abies alba Species 0.000 title claims abstract description 34
- 239000010779 crude oil Substances 0.000 title claims abstract description 16
- 239000003921 oil Substances 0.000 claims abstract description 124
- 238000005086 pumping Methods 0.000 claims description 43
- 238000013016 damping Methods 0.000 claims description 30
- 238000000605 extraction Methods 0.000 claims description 19
- 238000003860 storage Methods 0.000 claims description 17
- 229910000828 alnico Inorganic materials 0.000 claims description 4
- 230000000712 assembly Effects 0.000 claims description 3
- 238000000429 assembly Methods 0.000 claims description 3
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 239000010720 hydraulic oil Substances 0.000 claims 1
- 235000004507 Abies alba Nutrition 0.000 abstract description 27
- 239000003208 petroleum Substances 0.000 abstract description 10
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 238000004140 cleaning Methods 0.000 abstract description 3
- 239000007789 gas Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000002699 waste material Substances 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000007664 blowing Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000005389 magnetism Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
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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)
- Quick-Acting Or Multi-Walled Pipe Joints (AREA)
Abstract
The invention relates to the field of christmas trees, in particular to a christmas tree wellhead sealing device for preventing crude oil from leaking. The technical problems are as follows: the sealing mode of the existing sealing device is single, when the petroleum pressure in the christmas tree suddenly rises, the existing sealing device cannot plug high-pressure petroleum, so that part of petroleum overflows to the ground and seriously pollutes the environment. The technical proposal is as follows: a christmas tree wellhead sealing device for preventing crude oil leakage comprises a fourth flange, a first oil drainage component and the like; and a first oil drainage component is arranged on the upper side of the fourth flange. When the oil pressure in the christmas tree is suddenly increased, high-pressure oil is automatically discharged and collected, the christmas tree is automatically sealed after the oil pressure is kept stable, the high-pressure oil is prevented from directly flowing out, meanwhile, the residual oil is automatically scraped and collected on the sucker rod, the residual oil is prevented from overflowing to the surface of the christmas tree, the cleaning procedure is removed, the efficiency is improved, and meanwhile, the problem of environmental pollution is effectively avoided.
Description
Technical Field
The invention relates to the field of christmas trees, in particular to a christmas tree wellhead sealing device for preventing crude oil from leaking.
Background
A christmas tree is an assembly located at the opening to the top of a well and includes valves, safety systems and a series of monitoring equipment for measurement and maintenance. The tree connects production and production lines from downhole and acts as an important barrier to the outside environment at the top of the well. It includes a number of valves that can be used to regulate or prevent the flow of produced crude oil vapors, natural gas and liquids out of the well.
When the prior art is used for oil extraction, long-stroke up-and-down reciprocating motion is required to be carried out through the oil extraction rod to pump oil into the oil extraction tree, the oil extraction rod slides in the wellhead of the oil extraction tree in the process, so that part of oil flows out of a gap between the oil extraction rod and the wellhead of the oil extraction tree, a sealing device is required to be installed at the wellhead of the oil extraction tree and used for preventing the oil from flowing out of the gap between the wellhead of the oil extraction tree and the sucker rod, the sealing mode of the existing sealing device is single, and when the oil pressure in the oil extraction tree suddenly rises, the existing sealing device cannot seal high-pressure oil, so that part of oil overflows to the ground and seriously pollutes the environment, and meanwhile, the resource waste is caused.
Therefore, there is a need to design a tree wellhead seal that prevents crude oil leakage.
Disclosure of Invention
The invention provides a wellhead sealing device for preventing crude oil leakage, which aims to overcome the defects that the existing sealing device is single in sealing mode, and when the petroleum pressure in a christmas tree suddenly rises, the existing sealing device cannot plug high-pressure petroleum, so that part of petroleum overflows to the ground and the environment is seriously polluted.
The technical scheme of the invention is as follows: a christmas tree wellhead sealing device for preventing crude oil leakage comprises a first flange, a first pipeline, a second flange, a third flange, a first cylinder, a fourth flange, a first oil drainage component, a linkage component, a first pressurizing component, a balancing component and a second oil drainage component; the first flange is internally connected with a first pipeline through threads; the upper part of the outer side of the first pipeline is connected with a second flange through threads; a third flange is fixedly connected to the upper side of the second flange; the inner side of the third flange is in threaded connection with the first pipeline; the upper side of the third flange is fixedly connected with a first cylinder; a fourth flange is fixedly connected to the upper side of the first cylinder; the upper side of the fourth flange is provided with a first oil drainage component for preventing residual oil from overflowing; the first oil drainage component is connected with the first cylinder; a linkage assembly for acquiring power from the sucker rod is arranged on the inner side of the first pipeline; the linkage assembly is contacted with the first oil drainage assembly; the left side and the right side of the first cylinder are respectively provided with a first pressurizing assembly for pressurizing the first cylinder; the two first pressurizing assemblies are connected with the linkage assembly; the left side and the right side of the first cylinder are respectively provided with a balance component for keeping the pressure in the first cylinder balanced, and the two balance components are respectively positioned at the front sides of the two first pressurizing components; the lower side of the first pipeline is provided with a second oil drainage component for preventing high-pressure oil from flowing out;
The first oil drainage assembly comprises a fifth flange, a second pipeline, a damping sliding rail, a damping sliding block, an oil pumping cylinder, an oil pumping pipe, a first connecting block, a sleeve, a linkage rod, a first piston, a fourth limiting ring, a first grid blocking sleeve and a first sealing ring; a fifth flange is fixedly connected to the upper side of the fourth flange; the inner side of the fifth flange is in threaded connection with a second pipeline; the second pipeline is in threaded connection with the fourth flange; two damping sliding rails are arranged at the lower part of the inner side of the second pipeline; the two damping slide rails are symmetrically arranged left and right, and are both connected with a damping slide block in a sliding manner; an oil pumping cylinder is fixedly connected between the two damping sliding blocks; four oil extraction pipes are communicated with the upper side of the oil extraction cylinder; two first connecting blocks are fixedly connected to the upper side of the inner wall of the first cylinder; the two first connecting blocks are symmetrically arranged left and right, and the opposite sides of the two first connecting blocks are fixedly connected with a sleeve; a linkage rod is connected in the two sleeves in a sliding way; the upper ends of the two linkage rods are fixedly connected with first pistons; the first piston is in sliding connection with the oil pumping cylinder; two fourth limiting rings are fixedly connected to the lower side of the oil pumping cylinder; the upper sides of the two fourth limiting rings are contacted with the first piston; the upper part of the inner side of the second pipeline is fixedly connected with a first grid retaining sleeve; four first sealing rings are arranged on the inner side of the first grid retaining sleeve; the lower sides of the two linkage rods are connected with the linkage assembly.
Further, four long holes are formed in the first grid baffle sleeve and distributed in a circular array, the four long holes are respectively aligned with the four oil pumping pipes, three small holes are formed in the centripetal sides of the four long holes and communicated with the middle channel of the first grid baffle sleeve, and three groups of small holes are respectively located above the three first sealing rings below.
Further, the upper ends of the four oil pumping pipes are provided with rubber rings.
Further, a plurality of through holes are formed in the lower side of the oil pumping barrel.
Further, the linkage assembly comprises a second grid retaining sleeve, a second sealing ring, a first guide rail, a first rack, a first linkage block, a linkage ring, balls, a magnet, a first limiting block and a second limiting block; the lower part of the inner side of the first pipeline is fixedly connected with a second grid retaining sleeve; four second sealing rings are uniformly arranged in the second grid retaining sleeve; the left part and the right part of the inner side of the first pipeline are fixedly connected with a first guide rail; a first rack is connected to the two first guide rails in a sliding manner; the opposite sides of the lower parts of the two first racks are fixedly connected with a first linkage block; a linkage ring is fixedly connected between the two first linkage blocks; three balls are rotationally connected to the inner wall of the linkage ring; the three balls are distributed in a circular array, three magnets are fixedly connected to the inner wall of the linkage ring, the three magnets are distributed in a circular array, the magnets are alnico magnets, and the three magnets and the three balls are arranged in a crossing manner; the inner wall of the first pipeline is fixedly connected with two first limiting blocks, and the upper sides of the two first limiting blocks are contacted with the lower end of the linkage ring; a second limiting block is fixedly connected to the front part and the rear part of the upper side of the first pipeline; the upper side of the first rack is fixedly connected with the linkage rod; the first rack is connected with the first pressurizing assembly.
Further, the first pressurizing assembly comprises a second connecting block, a loop bar, a spline shaft, a first straight gear, a third connecting block, a second guide rail, a second rack, a second linkage block, a first limiting rod, a first spring, a second piston, a second cylinder, a third pipeline, a first one-way valve, a fourth pipeline and a second straight gear; the right part of the upper side of the first pipeline is fixedly connected with a second connecting block; a loop bar is rotationally connected between the second connecting block and the first cylinder; the left end of the loop bar is fixedly connected with a second straight gear which is meshed with the first rack; the right part of the loop bar slides a spline shaft is connected; the right end of the spline shaft is fixedly connected with a first straight gear; a third connecting block is fixedly connected to the lower part of the right side of the first cylinder; the front side of the third connecting block is fixedly connected with a second guide rail; the second guide rail is connected with a second rack in a sliding way; the second rack is meshed with the first straight gear; the upper end of the second rack is fixedly connected with a second linkage block, and the upper surface of the second linkage block is provided with a frustum; the left side and the right side of the second linkage block are both in sliding connection with a first limiting rod; the lower ends of the two first limiting rods are fixedly connected with a first spring; the upper ends of the two first springs are fixedly connected with the second linkage block, and the two first springs are sleeved on the two first limiting rods respectively; the upper ends of the two first limiting rods are fixedly connected with second pistons, through holes are formed in the middle of the second pistons, and the frustum of the second linkage block is matched with the through holes of the second pistons; the middle part of the right side of the first cylinder is fixedly connected with a second cylinder; the second cylinder is in sliding connection with the second piston; a third pipeline is communicated with the upper side of the second cylinder; the left end of the third pipeline is communicated with a first one-way valve; the output end of the first one-way valve is communicated with a fourth pipeline; the left end of the fourth pipeline is communicated with the first cylinder; the spline shaft is connected with the balance component.
Further, the middle part of the upper side of the second linkage block is provided with a bulge, the middle part of the second piston is provided with a cavity, and the cavity is aligned with the bulge.
Further, the balance assembly comprises a third cylinder, a second limiting rod, a second spring, a third piston and a third linkage block; the lower part of the right side of the first cylinder is connected with a third cylinder in a penetrating way; a second limiting rod is connected inside the third cylinder in a sliding manner; the right end of the second limiting rod is fixedly connected with a second spring; the left end of the second spring is fixedly connected with the third cylinder, and the second spring is sleeved on the second limiting rod; a third piston is fixedly connected to the left end of the second limiting rod; the third piston is in sliding connection with the third cylinder; a third linkage block is fixedly connected to the middle part of the second limiting rod; the rear side of the third linkage block is rotationally connected with the spline shaft.
Further, the second oil drainage component comprises a fifth pipeline, a connecting ring, a third limiting rod, a fourth piston, a third spring, a sixth pipeline, an electric valve, a seventh pipeline, a storage box, an eighth pipeline, a hand-screwed valve and a ninth pipeline; the front part of the lower side of the first pipeline is communicated with a fifth pipeline; the inner side of the fifth pipeline is fixedly connected with a connecting ring; the front side of the connecting ring is fixedly connected with two third limiting rods; a fourth piston is connected to the two third limiting rods in a sliding manner; the front ends of the two third limiting rods are fixedly connected with a third spring; the rear ends of the two third springs are fixedly connected with the fourth piston, and the two third springs are sleeved on the two third limiting rods respectively; the lower side of the fifth pipeline is communicated with a sixth pipeline, and the sixth pipeline is positioned behind the connecting ring; the lower side of the sixth pipeline is communicated with an electric valve; a seventh pipeline is communicated with the lower side of the electric valve; the lower part of the outer side of the first pipeline is fixedly connected with a storage box; the seventh pipeline is communicated with the storage box; the lower part of the left side of the storage box is communicated with an eighth pipeline; a hand-screwed valve is communicated with the left side of the eighth pipeline; the left side of the hand-twisting valve is communicated with a ninth pipeline.
Further, the device also comprises a second pressurizing assembly, wherein the second pressurizing assembly is arranged at the front side of the first cylinder and comprises an air pump, a tenth pipeline, a second one-way valve and an eleventh pipeline; an air pump is fixedly connected to the middle part of the front side of the first cylinder; the output end of the air pump is communicated with a tenth pipeline; the upper side of the tenth pipeline is communicated with a second one-way valve; the output end of the second one-way valve is communicated with an eleventh pipeline; the upper side of the eleventh pipeline is communicated with the first cylinder.
The beneficial effects of the invention are as follows: when the oil pressure in the christmas tree is suddenly increased, high-pressure oil is automatically discharged and collected, the christmas tree is automatically sealed after the oil pressure is kept stable, high-pressure oil is prevented from directly flowing out, meanwhile, residual oil is automatically scraped and collected on the sucker rod, the residual oil is prevented from overflowing to the surface of the christmas tree, a cleaning procedure is removed, the efficiency is improved, the problem of environmental pollution is effectively avoided, the resource waste is reduced, the sucker rod which automatically reciprocates up and down is utilized to drive the first pressurizing assembly to pressurize the first cylinder, the sealing effect on the christmas tree is further improved, and the phenomenon of overhigh pressure in the first cylinder is avoided.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a cross-sectional view of the present invention;
FIG. 3 is a schematic view of a first drainage assembly according to the present invention;
FIG. 4 is a schematic view of a first portion of a first drainage assembly of the present invention;
FIG. 5 is a schematic view of a second portion of the first drainage assembly of the present invention;
FIG. 6 is a schematic view of a third portion of the first drainage assembly of the present invention;
FIG. 7 is a schematic view of a fourth portion of the first drain assembly of the present invention;
FIG. 8 is a schematic structural view of the linkage assembly of the present invention;
FIG. 9 is a schematic view of a portion of the structure of the linkage assembly of the present invention;
FIG. 10 is a schematic view of the structure of the first pressurizing assembly of the present invention;
FIG. 11 is a schematic view of the balance assembly of the present invention;
FIG. 12 is a schematic view of a second drain assembly of the present invention;
FIG. 13 is a schematic view of a portion of a second drain assembly of the present invention;
fig. 14 is a schematic view of the structure of the second pressurizing assembly of the present invention.
Meaning of reference numerals in the drawings: 1-first flange, 2-first pipe, 3-second flange, 4-third flange, 5-first cylinder, 6-fourth flange, 7-sucker rod, 201-fifth flange, 202-second pipe, 203-damping slide rail, 204-damping slide block, 205-sucker rod, 206-sucker pipe, 207-first connecting block, 208-sleeve, 209-linkage rod, 2010-first piston, 2011-fourth limit ring, 2012-first check sleeve, 2013-first seal ring, 301-second check sleeve, 302-second seal ring, 303-first guide rail, 304-first rack, 305-first linkage block, 306-linkage ring, 307-ball, 308-magnet, 309-first limit block, 3010-second limit block, 401-second connecting block, 402-loop bar, 403-spline shaft, 404-first spur gear, 405-third connecting block, 406-second guide rail, 407-second rack, 408-second linkage block, 409-first limit lever, 4010-first spring, 4011-second piston, 4012-second cylinder, 4013-third cylinder, 4014-first one-way valve, 4015-fourth cylinder, 4016-second spur gear, 501-third cylinder, 502-second limit lever, 503-second spring, 504-third piston, 505-third linkage block, 701-fifth cylinder, 702-connecting ring, 703-third limit lever, 704-fourth piston, 705-third spring, 706-sixth cylinder, 707-electric valve, 708-seventh pipeline, 709-storage box, 7010-eighth pipeline, 7011-hand-screwing valve, 7012-ninth pipeline, 801-air pump, 802-tenth pipeline, 803-second one-way valve, 804-eleventh pipeline.
Detailed Description
The invention is further described below with reference to the drawings and examples.
Example 1
1-13, A christmas tree wellhead sealing device for preventing crude oil leakage comprises a first flange 1, a first pipeline 2, a second flange 3, a third flange 4, a first cylinder 5, a fourth flange 6, a first oil drainage component, a linkage component, a first pressurizing component, a balance component and a second oil drainage component; the first flange 1 is internally connected with a first pipeline 2 through threads; the upper part of the outer side of the first pipeline 2 is connected with a second flange 3 through threads; a third flange 4 is connected to the upper side of the second flange 3 through bolts; the inner side of the third flange 4 is in threaded connection with the first pipeline 2; the upper side of the third flange 4 is connected with a first cylinder 5 through bolts; the upper end of the first cylinder 5 is connected with a fourth flange 6 through bolts; the upper side of the fourth flange 6 is provided with a first oil drainage component; the first oil drainage component is connected with the first cylinder 5; the inner side of the first pipeline 2 is provided with a linkage assembly; the linkage assembly is contacted with the first oil drainage assembly; the left side and the right side of the first cylinder 5 are provided with a first pressurizing assembly; the two first pressurizing assemblies are connected with the linkage assembly; the left side and the right side of the first cylinder 5 are respectively provided with a balance component, and the two balance components are respectively positioned at the front sides of the two first pressurizing components; the second oil drainage component is arranged on the lower side of the first pipeline 2;
The first oil drainage assembly comprises a fifth flange 201, a second pipeline 202, a damping sliding rail 203, a damping sliding block 204, an oil pumping cylinder 205, an oil pumping pipe 206, a first connecting block 207, a sleeve 208, a linkage rod 209, a first piston 2010, a fourth limiting ring 2011, a first check sleeve 2012 and a first sealing ring 2013; a fifth flange 201 is connected to the upper side of the fourth flange 6 through bolts; the inner side of the fifth flange 201 is connected with a second pipeline 202 through threads; the second pipe 202 is in threaded connection with the fourth flange 6; two damping sliding rails 203 are arranged at the lower part of the inner side of the second pipeline 202; the two damping slide rails 203 are symmetrically arranged left and right, and a damping slide block 204 is connected to the two damping slide rails 203 in a sliding manner; a pumping cylinder 205 is welded between the two damping sliders 204; four oil pumping pipes 206 are communicated with the upper side of the oil pumping cylinder 205; two first connecting blocks 207 are welded on the upper part of the inner wall of the first cylinder 5; the two first connecting blocks 207 are symmetrically arranged left and right, and the opposite sides of the two first connecting blocks 207 are welded with a sleeve 208; a linkage rod 209 is connected in the two sleeves 208 in a sliding way; the upper ends of the two linkage rods 209 are fixedly connected with a first piston 2010; the first piston 2010 is slidably coupled to the pumping cylinder 205; two fourth limiting rings 2011 are fixedly connected to the lower side of the oil pumping barrel 205; the upper sides of the two fourth limiting rings 2011 are contacted with the first piston 2010; a first check sleeve 2012 is fixedly connected to the upper part of the inner side of the second pipeline 202; four first sealing rings 2013 are arranged on the inner side of the first grid guard 2012; the lower sides of the two linkage rods 209 are connected with the linkage assembly; four long holes are formed in the first grid retaining sleeve 2012 in a circular array and are aligned with the four oil pumping pipes 206 respectively, three small holes are formed in the centripetal sides of the four long holes and communicated with the middle channel of the first grid retaining sleeve 2012, and three groups of small holes are located above the three first sealing rings 2013 below respectively; rubber rings are arranged at the upper ends of the four oil extraction pipes 206; round holes are formed in the front portion of the lower side and the rear portion of the lower side of the second pipe 202.
The linkage assembly comprises a second check sleeve 301, a second sealing ring 302, a first guide rail 303, a first rack 304, a first linkage block 305, a linkage ring 306, balls 307, a magnet 308, a first limiting block 309 and a second limiting block 3010; the lower part of the inner side of the first pipeline 2 is fixedly connected with a second grid retaining sleeve 301; four second sealing rings 302 are uniformly arranged in the second grid baffle sleeve 301; a first guide rail 303 is welded on the left and right parts of the inner side of the first pipeline 2; a first rack 304 is slidably connected to both first guide rails 303; a first linkage block 305 is welded on the opposite sides of the lower parts of the two first racks 304; a linkage ring 306 is welded between the two first linkage blocks 305; three balls 307 are rotatably connected to the inner wall of the linkage ring 306; the three balls 307 are distributed in a circular array, the three magnets 308 are fixedly connected to the inner wall of the linkage ring 306, the three magnets 308 are distributed in a circular array, the magnets 308 are alnico magnets, the alnico magnets are high-temperature resistant and are used for avoiding that the magnets 308 lose magnetism and influence normal operation due to overhigh temperature of the christmas tree, and the three magnets 308 and the three balls 307 are arranged in a cross manner; two first limiting blocks 309 are fixedly connected to the middle of the inner wall of the first pipeline 2, and the upper sides of the two first limiting blocks 309 are contacted with the lower end of the linkage ring 306; a second limiting block 3010 is fixedly connected at the front and rear parts of the upper side of the first pipeline 2; the upper side of the first rack 304 is welded with the lower side of the linkage rod 209; the first rack 304 is connected to a first compression assembly.
The first pressurizing assembly comprises a second connecting block 401, a sleeve rod 402, a spline shaft 403, a first straight gear 404, a third connecting block 405, a second guide rail 406, a second rack 407, a second linkage block 408, a first limit rod 409, a first spring 4010, a second piston 4011, a second cylinder 4012, a third pipeline 4013, a first one-way valve 4014, a fourth pipeline 4015 and a second straight gear 4016; a second connecting block 401 is welded on the right part of the upper side of the first pipeline 2; a loop bar 402 is rotatably connected between the second connection block 401 and the first cylinder 5; the left end of the loop bar 402 is fixedly connected with a second straight gear 4016, and the second straight gear 4016 is meshed with the first rack 304; the right part of the loop bar 402 is connected with a spline shaft 403 in a sliding way; the right end of the spline shaft 403 is fixedly connected with a first straight gear 404; a third connecting block 405 is welded at the lower right side of the first cylinder 5; a second guide rail 406 is welded on the front side of the third connecting block 405; a second rack 407 is slidably connected to the second guide rail 406; the second rack 407 is meshed with the first straight gear 404; the upper end of the second rack 407 is welded with a second linkage block 408, and the upper surface of the second linkage block 408 is arranged as a frustum; a first limiting rod 409 is slidably connected to the left and right sides of the second linkage block 408; the lower ends of the two first limiting rods 409 are welded with a first spring 4010; the upper ends of the two first springs 4010 are welded with the second linkage block 408, and the two first springs 4010 are sleeved on the two first limiting rods 409 respectively; the upper ends of the two first limiting rods 409 are fixedly connected with a second piston 4011, the middle part of the second piston 4011 is provided with a through hole, and the frustum of the second linkage block 408 is matched with the through hole of the second piston 4011; a second cylinder 4012 is welded in the middle of the right side of the first cylinder 5; the second cylinder 4012 is slidably coupled to the second piston 4011; a third pipeline 4013 is communicated with the upper side of the second cylinder 4012; the left end of the third pipeline 4013 is communicated with a first one-way valve 4014; the output end of the first one-way valve 4014 is communicated with a fourth pipeline 4015; the left end of the fourth pipeline 4015 is communicated with the first cylinder 5; a protrusion is provided at the middle of the upper side of the second linkage block 408, a cavity is provided at the middle of the second piston 4011, and the cavity is aligned with the protrusion.
The balance assembly comprises a third cylinder 501, a second limiting rod 502, a second spring 503, a third piston 504 and a third linkage block 505; a third cylinder 501 is connected to the right lower part of the first cylinder 5 in a penetrating way; a second limit rod 502 is connected inside the third cylinder 501 in a sliding way; a second spring 503 is welded at the right end of the second limiting rod 502; the left end of the second spring 503 is welded with the third cylinder 501, and the second spring 503 is sleeved on the second limiting rod 502; a third piston 504 is fixedly connected to the left end of the second limiting rod 502; the third piston 504 is slidably connected to the third cylinder 501; a third linkage block 505 is welded in the middle of the second limiting rod 502; the third linkage block 505 is rotatably coupled to the spline shaft 403 at a rear side thereof.
The second oil drain assembly comprises a fifth pipeline 701, a connecting ring 702, a third limiting rod 703, a fourth piston 704, a third spring 705, a sixth pipeline 706, an electric valve 707, a seventh pipeline 708, a storage box 709, an eighth pipeline 7010, a screwing valve 7011 and a ninth pipeline 7012; a fifth pipeline 701 is communicated with the front part of the lower side of the first pipeline 2; a connecting ring 702 is welded on the inner side of the fifth pipeline 701; two third limiting rods 703 are welded on the front side of the connecting ring 702; a fourth piston 704 is connected to the two third limit rods 703 in a sliding manner; a third spring 705 is welded at the front ends of the two third limiting rods 703; the rear ends of the two third springs 705 are welded with the fourth piston 704; the two third springs 705 are respectively sleeved on the two third limiting rods 703, a sixth pipeline 706 is communicated with the lower side of the fifth pipeline 701, and the sixth pipeline 706 is positioned behind the connecting ring 702; the lower side of the sixth pipeline 706 is communicated with an electric valve 707; a seventh pipeline 708 is communicated with the lower side of the electric valve 707; the lower part of the outer side of the first pipeline 2 is welded with a storage box 709; seventh conduit 708 communicates with a receiving box 709; an eighth pipeline 7010 is communicated with the lower left side of the storage box 709; a hand-screwed valve 7011 is communicated with the left side of the eighth pipeline 7010; a ninth conduit 7012 is in communication with the left side of the hand-screwed valve 7011.
Firstly, the oil recovery pipeline is communicated with the fifth pipeline 701, during oil extraction, the oil extraction machine drives the sucker rod 7 to reciprocate up and down to pump oil in an oil field into the christmas tree, in the process, the sucker rod 7 reciprocates up and down in the four second sealing rings 302, the four second sealing rings 302 are always contacted with the sucker rod 7, thereby sealing the port on the upper side of the christmas tree by matching with the second check sleeve 301, preventing the oil from flowing upwards to the upper side of the second check sleeve 301, when the sucker rod 7 moves upwards, as the three magnets 308 are spaced from the sucker rod 7 by a large magnetic force, the sucker rod 7 drives the three magnets 308 to move upwards, Three magnets 308 simultaneously drive the linkage ring 306 to move upwards, the linkage ring 306 drives the two first linkage blocks 305 to move upwards, the two first linkage blocks 305 respectively drive the two first racks 304 to move upwards, so that the two first racks 304 respectively slide upwards on the two first guide rails 303, the first rack 304 positioned at the right side drives the second spur gear 4016 to rotate, the second spur gear 4016 drives the sleeve rod 402 to rotate, the sleeve rod 402 drives the spline shaft 403 to rotate, the spline shaft 403 drives the first spur gear 404 to rotate, the first spur gear 404 drives the second rack 407 to slide upwards on the second guide rail 406, The second rack 407 drives the second linkage block 408 to move upwards, and because of the large friction force between the second piston 4011 and the second cylinder 4012, the second piston 4011 keeps stationary, the second linkage block 408 slides upwards on the two first limit rods 409 and stretches the two first springs 4010, the second linkage block 408 continues to be inserted upwards into the inner side of the second piston 4011, so that a sealed cavity is formed between the second piston 4011 and the second cylinder 4012, then the second linkage block 408 continues to move upwards, the second piston 4011 is pushed upwards, and air in the upper cavity of the second cylinder 4012 is extruded into the third pipeline 4013, Then air flows into the first cylinder 5 through the first one-way valve 4014 and the fourth pipeline 4015 in sequence, so that the air pressure in the first cylinder 5 is increased, the first one-way valve 4014 is used for preventing high-pressure air in the first cylinder 5 from flowing back into the second cylinder 4012, because the stroke of the up-and-down movement of the sucker rod 7 is long, when the linkage ring 306 moves upwards to contact the two second limiting blocks 3010, the two second limiting blocks 3010 simultaneously block the linkage ring 306, thereby keeping the linkage ring 306 stationary, and the sucker rod 7 continues to move upwards, in the process, the sucker rod 7 drives the three balls 307 to roll, The rolling of the three balls 307 is used for replacing friction between the sucker rod 7 and the linkage ring 306, so that the linkage ring 306 and the sucker rod 7 are prevented from being worn, when the sucker rod 7 moves downwards, the sucker rod 7 drives the three magnets 308 to move downwards, so that the three magnets 308 simultaneously drive the linkage ring 306 to move downwards, thereby enabling the first rack 304 to move downwards, further enabling the first straight gear 404 to reversely rotate, driving the second rack 407 to move downwards, enabling the second rack 407 to drive the second linkage block 408 to move downwards away from the second piston 4011, then enabling the second linkage block 408 to drive the second piston 4011 to move downwards through the two first limiting rods 409 and the first springs 4010, In this process, the second linkage block 408 and the second piston 4011 are in a separated state, so that natural air flows into the second cylinder 4012 through the gap between the second linkage block 408 and the second piston 4011, air is supplemented into the second cylinder 4012, because the stroke of the pumping rod 7 moving up and down is long, when the linkage ring 306 moves down to contact with the two first limiting blocks 309, the linkage ring 306 is kept stationary, and is driven to reciprocate up and down in a short stroke by the pumping rod 7 in a long stroke, so that the second rack 407 reciprocates up and down, and the second cylinder 4012 continuously fills the first cylinder 5 with air, The first cylinder 5 is in a high pressure state, the upper port of the christmas tree is further sealed by high pressure gas, the sealing effect is improved, the sucker rod 7 always reciprocates up and down in the oil extraction process, when the gas pressure in the first cylinder 5 reaches the rated value, the high pressure gas in the first cylinder 5 pushes the third piston 504 to move, the third piston 504 drives the second limiting rod 502 to slide rightwards in the third cylinder 501 and compress the second spring 503, the second limiting rod 502 drives the third linkage block 505 to move rightwards, the third linkage block 505 drives the spline shaft 403 to slide rightwards, the spline shaft 403 drives the first straight gear 404 to be far away from the second rack 407, thereby stopping the second cylinder 4012 from blowing air into the first cylinder 5; When the oil pressure in the christmas tree suddenly rises, the oil can flow into the cavity formed by the first cylinder 5 and the first pipeline 2, at this time, the pressure in the first cylinder 5 is further increased, so that the high-pressure oil pushes the fourth piston 704 to move, the fourth piston 704 moves forward on the two third limit rods 703 and compresses the two third springs 705, the fourth piston 704 continues to be separated from the connecting ring 702 forward, then the oil flows into the oil recovery pipeline through the gap between the fourth piston 704 and the connecting ring 702, the oil is prevented from directly leaking to the ground, and after the oil pressure in the christmas tree is kept stable, the environmental pollution is reduced, The pressure in the first cylinder 5 is gradually restored, then the two third springs 705 drive the fourth piston 704 to move back to the original position, so that the fourth piston 704 and the connecting ring 702 are sealed against the fifth pipeline 701 again, at the moment, part of petroleum still remains in the first pipeline 2 and the fifth pipeline 701, the electric valve 707 is opened, the residual petroleum flows into the storage box 709 sequentially through the sixth pipeline 706, the electric valve 707 and the seventh pipeline 708, the storage box 709 collects the residual petroleum, then the storage box is manually placed under the ninth pipeline 7012, then the hand-screwed valve 7011 is unscrewed, and the petroleum in the storage box 709 sequentially passes through the eighth pipeline 7010, the valve 7011 and the ninth conduit 7012 are screwed into the storage tub, and then the valve 7011 is closed; When oil is poured into the cavity formed by the first cylinder 5 and the first pipeline 2, the position of the sucker rod 7 in the first cylinder 5 is stained with oil, the sucker rod 7 drives the oil to move upwards, then the oil is scraped clean by the four first sealing rings 2013 in sequence, the scraped oil remains in the three cavities formed by the four first sealing rings 2013 and the first check sleeve 2012, when the sucker rod 7 moves upwards again, the operation is repeated, so that the two first racks 304 move upwards, the two first racks 304 move upwards respectively to drive the two linkage rods 209 to move upwards, the two linkage rods 209 slide upwards in the two sleeves 208 respectively, The two linkage rods 209 slide upwards to drive the first piston 2010 to move upwards, and because of the larger damping existing between the damping sliding rail 203 and the damping sliding block 204, the oil pumping cylinder 205 is kept stationary, so that the first piston 2010 slides upwards in the oil pumping cylinder 205, the gas in the oil pumping cylinder 205 is pushed out through the four oil pumping pipes 206, the pushed air flows into the first cylinder 5 through the second pipeline 202, the first piston 2010 moves upwards after contacting the upper wall inside the oil pumping cylinder 205, so that the oil pumping cylinder 205 is driven to move upwards, the oil pumping cylinder 205 drives the two damping sliding blocks 204 to slide upwards on the adjacent damping sliding rail 203, The pumping cylinder 205 drives the four pumping pipes 206 to be respectively inserted into the four long holes of the first check sleeve 2012, then the pumping rod 7 moves downwards, according to the above operation, the two first racks 304 move upwards, and the two first racks 304 move upwards to drive the adjacent linkage rods 209 to move downwards, the two linkage rods 209 simultaneously drive the first piston 2010 to move downwards, and due to the larger damping between the damping slide rail 203 and the damping slide block 204, the pumping cylinder 205 is kept stationary, so that the first piston 2010 slides downwards in the pumping cylinder 205, so that a larger negative pressure is formed in the pumping cylinder 205, Then, the oil left in the three cavities flows into the oil pumping cylinder 205 from one side through the twelve small holes of the first check sleeve 2012, the four long holes of the first check sleeve 2012 and the four oil pumping pipes 206, then the first piston 2010 moves downwards to contact the two fourth limiting rings 2011, then the oil flows out into the first cylinder 5 through the through holes at the lower part of the oil pumping cylinder 205, finally is collected by the containing box 709, then the first piston 2010 pushes the two fourth limiting rings 2011 to move downwards, the two fourth limiting rings 2011 simultaneously drive the oil pumping cylinder 205 to move downwards, so that the oil pumping cylinder 205 moves downwards to return to the original position, And further, the oil in the three cavities is prevented from flowing out of the upper port of the second pipeline 202 to pollute the environment, when the oil pressure in the christmas tree is suddenly increased, the high-pressure oil is automatically discharged and collected, the christmas tree is automatically sealed after the oil pressure is kept stable, the high-pressure oil is prevented from directly flowing out, meanwhile, the residual oil is automatically scraped off and collected on the sucker rod 7, the residual oil is prevented from overflowing to the surface of the christmas tree, the cleaning procedure is removed, the efficiency is improved, the problem of environmental pollution is effectively avoided, the resource waste is reduced, meanwhile, the sucker rod 7 which reciprocates up and down is automatically utilized to drive the first pressurizing assembly to pressurize the first cylinder 5, the sealing effect on the tree is improved and the phenomenon of too high pressure in the first cylinder 5 is avoided.
Example 2
On the basis of the embodiment 1, as shown in fig. 1-2 and 14, the device further comprises a second pressurizing assembly, wherein the second pressurizing assembly is arranged on the front side of the first cylinder 5, and comprises an air pump 801, a tenth pipeline 802, a second one-way valve 803 and an eleventh pipeline 804; an air pump 801 is fixedly connected to the middle part of the front side of the first cylinder 5; the output end of the air pump 801 is communicated with a tenth pipeline 802; a second one-way valve 803 is communicated with the upper side of the tenth pipeline 802; the output end of the second one-way valve 803 is communicated with an eleventh pipeline 804; the eleventh pipe 804 communicates with the first cylinder 5 at its upper side.
When oil extraction operation is started, the sucker rod 7 needs to run for a period of time to raise the air pressure in the first cylinder 5 to the rated value, the air pump 801 is started, the air pump 801 starts to run, so that external air flows into the first cylinder 5 through the air pump 801, the tenth pipeline 802, the second one-way valve 803 and the eleventh pipeline 804 in sequence, the air pressure in the first cylinder 5 is raised, the time that the air pressure of the first cylinder 5 reaches the rated value is reduced during use, and the efficiency is greatly improved.
While the disclosure has been described with respect to only a limited number of embodiments, those skilled in the art, having benefit of this disclosure, will appreciate that various other embodiments can be devised which do not depart from the scope of the invention as disclosed herein. Accordingly, the scope of the invention should be limited only by the attached claims.
Claims (6)
1. A christmas tree wellhead sealing device for preventing crude oil leakage comprises a first flange (1), a first pipeline (2), a second flange (3), a third flange (4), a first cylinder (5) and a fourth flange (6); the first flange (1) is internally connected with a first pipeline (2) through threads; the upper part of the outer side of the first pipeline (2) is connected with a second flange (3) through threads; a third flange (4) is fixedly connected to the upper side of the second flange (3); the inner side of the third flange (4) is in threaded connection with the first pipeline (2); the upper side of the third flange (4) is fixedly connected with a first cylinder (5); a fourth flange (6) is fixedly connected to the upper side of the first cylinder (5); the hydraulic oil drainage device is characterized by further comprising a first oil drainage component, a linkage component, a first pressurizing component, a balancing component and a second oil drainage component; a first oil drainage component for preventing residual oil from overflowing is arranged on the upper side of the fourth flange (6); the first oil drainage component is connected with the first cylinder (5); a linkage assembly for acquiring power from the sucker rod (7) is arranged on the inner side of the first pipeline (2); the linkage assembly is contacted with the first oil drainage assembly; the left side and the right side of the first cylinder (5) are respectively provided with a first pressurizing component for pressurizing the first cylinder (5); the two first pressurizing assemblies are connected with the linkage assembly; the left side and the right side of the first cylinder (5) are respectively provided with a balance component for keeping the pressure in the first cylinder (5) balanced, and the two balance components are respectively positioned at the front sides of the two first pressurizing components; the lower side of the first pipeline (2) is provided with a second oil drainage component for preventing high-pressure oil from flowing out;
The first oil drainage assembly comprises a fifth flange (201), a second pipeline (202), a damping sliding rail (203), a damping sliding block (204), an oil pumping cylinder (205), an oil pumping pipe (206), a first connecting block (207), a sleeve (208), a linkage rod (209), a first piston (2010), a fourth limiting ring (2011), a first grid retaining sleeve (2012) and a first sealing ring (2013); a fifth flange (201) is fixedly connected to the upper side of the fourth flange (6); the inner side of the fifth flange (201) is connected with a second pipeline (202) through threads; the second pipeline (202) is in threaded connection with the fourth flange (6); two damping sliding rails (203) are arranged at the lower part of the inner side of the second pipeline (202); the two damping slide rails (203) are symmetrically arranged left and right, and the two damping slide rails (203) are connected with a damping slide block (204) in a sliding way; an oil pumping cylinder (205) is fixedly connected between the two damping sliding blocks (204); four oil extraction pipes (206) are communicated with the upper side of the oil extraction cylinder (205); two first connecting blocks (207) are fixedly connected to the upper side of the inner wall of the first cylinder (5); the two first connecting blocks (207) are symmetrically arranged left and right, and the opposite sides of the two first connecting blocks (207) are fixedly connected with a sleeve (208); a linkage rod (209) is connected in the two sleeves (208) in a sliding way; the upper ends of the two linkage rods (209) are fixedly connected with first pistons (2010); the first piston (2010) is in sliding connection with the oil pumping cylinder (205); two fourth limiting rings (2011) are fixedly connected to the lower side of the oil pumping cylinder (205); the upper sides of the two fourth limiting rings (2011) are contacted with the first piston (2010); a first check sleeve (2012) is fixedly connected to the upper part of the inner side of the second pipeline (202); four first sealing rings (2013) are arranged on the inner sides of the first grid retaining sleeves (2012);
the linkage assembly comprises a second grid retaining sleeve (301), a second sealing ring (302), a first guide rail (303), a first rack (304), a first linkage block (305), a linkage ring (306), balls (307), magnets (308), a first limiting block (309) and a second limiting block (3010); the lower part of the inner side of the first pipeline (2) is fixedly connected with a second grid retaining sleeve (301); four second sealing rings (302) are uniformly arranged in the second grid baffle sleeve (301); a first guide rail (303) is fixedly connected to the left part and the right part of the inner side of the first pipeline (2); a first rack (304) is connected to the two first guide rails (303) in a sliding manner; the opposite sides of the lower parts of the two first racks (304) are fixedly connected with a first linkage block (305); a linkage ring (306) is fixedly connected between the two first linkage blocks (305); three balls (307) are rotatably connected to the inner wall of the linkage ring (306); the three balls (307) are distributed in a circular array, three magnets (308) are fixedly connected to the inner wall of the linkage ring (306), the three magnets (308) are distributed in a circular array, the magnets (308) are alnico magnets, and the three magnets (308) and the three balls (307) are arranged in a cross manner; two first limiting blocks (309) are fixedly connected to the inner wall of the first pipeline (2), and the upper sides of the two first limiting blocks (309) are contacted with the lower end of the linkage ring (306); a second limiting block (3010) is fixedly connected at the front part and the rear part of the upper side of the first pipeline (2); the upper side of the first rack (304) is fixedly connected with the linkage rod (209); the first rack (304) is connected with the first pressurizing assembly;
the first pressurizing assembly comprises a second connecting block (401), a loop bar (402), a spline shaft (403), a first straight gear (404), a third connecting block (405), a second guide rail (406), a second rack (407), a second linkage block (408), a first limit rod (409), a first spring (4010), a second piston (4011), a second cylinder (4012), a third pipeline (4013), a first one-way valve (4014), a fourth pipeline (4015) and a second straight gear (4016); a second connecting block (401) is fixedly connected to the right part of the upper side of the first pipeline (2); a loop bar (402) is rotatably connected between the second connecting block (401) and the first cylinder (5); the left end of the loop bar (402) is fixedly connected with a second spur gear (4016), and the second spur gear 4016 is meshed with the first rack (304); the right part of the loop bar (402) is connected with a spline shaft (403) in a sliding way; the right end of the spline shaft (403) is fixedly connected with a first straight gear (404); a third connecting block (405) is fixedly connected to the lower part of the right side of the first cylinder (5); a second guide rail (406) is fixedly connected to the front side of the third connecting block (405); a second rack (407) is connected on the second guide rail (406) in a sliding way; the second rack (407) is meshed with the first straight gear (404); the upper end of the second rack (407) is fixedly connected with a second linkage block (408), and the upper surface of the second linkage block (408) is arranged in a frustum shape; the left side and the right side of the second linkage block (408) are both in sliding connection with a first limiting rod (409); the lower ends of the two first limiting rods (409) are fixedly connected with a first spring (4010); the upper ends of the two first springs (4010) are fixedly connected with the second linkage block (408), and the two first springs 4010 are respectively sleeved on the two first limiting rods 409; the upper ends of the two first limiting rods (409) are fixedly connected with a second piston (4011), a through hole is formed in the middle of the second piston (4011), and a frustum of the second linkage block (408) is matched with the through hole of the second piston (4011); a second cylinder (4012) is fixedly connected in the middle of the right side of the first cylinder (5); the second cylinder (4012) is in sliding connection with the second piston (4011); a third pipeline (4013) is communicated with the upper side of the second cylinder (4012); the left end of the third pipeline (4013) is communicated with a first one-way valve (4014); the output end of the first one-way valve (4014) is communicated with a fourth pipeline (4015); the left end of the fourth pipeline (4015) is communicated with the first cylinder (5); the spline shaft (403) is connected with the balance component;
The balance assembly comprises a third cylinder (501), a second limiting rod (502), a second spring (503), a third piston (504) and a third linkage block (505); a third cylinder (501) is connected to the lower part of the right side of the first cylinder (5) in a penetrating way; a second limit rod (502) is connected inside the third cylinder (501) in a sliding way; a second spring (503) is fixedly connected to the right end of the second limiting rod (502); the left end of the second spring (503) is fixedly connected with the third cylinder (501), and the second spring (503) is sleeved on the second limiting rod (502); a third piston (504) is fixedly connected to the left end of the second limiting rod (502); the third piston (504) is in sliding connection with the third cylinder (501); a third linkage block (505) is fixedly connected to the middle part of the second limiting rod (502); the rear side of the third linkage block (505) is rotationally connected with the spline shaft (403);
The second oil drainage assembly comprises a fifth pipeline (701), a connecting ring (702), a third limiting rod (703), a fourth piston (704), a third spring (705), a sixth pipeline (706), an electric valve (707), a seventh pipeline (708), a storage box (709), an eighth pipeline (7010), a hand-screwed valve (7011) and a ninth pipeline (7012); a fifth pipeline (701) is communicated with the front part of the lower side of the first pipeline (2); a connecting ring (702) is fixedly connected to the inner side of the fifth pipeline (701); the front side of the connecting ring (702) is fixedly connected with two third limiting rods (703); a fourth piston (704) is connected to the two third limiting rods (703) in a sliding manner; the front ends of the two third limiting rods (703) are fixedly connected with a third spring (705); the rear ends of the two third springs (705) are fixedly connected with the fourth piston (704), and the two third springs (705) are respectively sleeved on the two third limiting rods (703); a sixth pipeline (706) is communicated with the lower side of the fifth pipeline (701), and the sixth pipeline (706) is positioned behind the connecting ring (702); an electric valve (707) is communicated with the lower side of the sixth pipeline (706); a seventh pipeline (708) is communicated with the lower side of the electric valve (707); the lower part of the outer side of the first pipeline (2) is fixedly connected with a storage box (709); the seventh pipeline (708) is communicated with the storage box (709); an eighth pipeline (7010) is communicated with the lower left side of the storage box (709); a hand-screwed valve (7011) is communicated with the left side of the eighth pipeline (7010); the left side of the hand-twisting valve (7011) is communicated with a ninth pipeline (7012).
2. A christmas tree wellhead sealing device for preventing crude oil leakage according to claim 1, characterized in that the first grid guard (2012) is provided with four long holes, the four long holes are distributed in a circular array, the four long holes are respectively aligned with the four oil pumping pipes (206), the centripetal sides of the four long holes are provided with three small holes communicated with the middle channel of the first grid guard (2012), and the three groups of small holes are respectively positioned above the three first sealing rings (2013) below.
3. A christmas tree wellhead sealing device for preventing crude oil leakage according to claim 1, characterized in that the upper ends of the four sucker tubes (206) are each provided with a rubber ring.
4. A christmas tree wellhead sealing device for preventing leakage of crude oil according to claim 1, characterized in that the underside of the pumping cylinder (205) is provided with a plurality of through holes.
5. A christmas tree wellhead sealing device for preventing leakage of crude oil according to claim 1, characterized in that the second linkage block (408) is provided with a protrusion in the middle of the upper side, the second piston (4011) is provided with a cavity in the middle, and the cavity is aligned with the protrusion.
6. A christmas tree wellhead sealing device for preventing crude oil leakage according to claim 1, further comprising
The device comprises a second pressurizing assembly, wherein the second pressurizing assembly is arranged at the front side of a first cylinder (5), and comprises an air pump (801), a tenth pipeline (802), a second one-way valve (803) and an eleventh pipeline (804); an air pump (801) is fixedly connected to the middle part of the front side of the first cylinder (5); the output end of the air pump (801) is communicated with a tenth pipeline (802); the upper side of the tenth pipeline (802) is communicated with a second one-way valve (803); the output end of the second one-way valve (803) is communicated with an eleventh pipeline (804); the upper side of the eleventh pipeline (804) is communicated with the first cylinder (5).
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| CN202210651012.5A CN114961624B (en) | 2022-06-10 | 2022-06-10 | A Christmas tree wellhead sealing device for preventing crude oil leakage |
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| CN202210651012.5A CN114961624B (en) | 2022-06-10 | 2022-06-10 | A Christmas tree wellhead sealing device for preventing crude oil leakage |
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| CN118128480B (en) * | 2024-05-08 | 2024-06-28 | 江苏雄越石油机械设备制造有限公司 | Oil extraction wellhead device with replaceable leakage valve |
| CN118817018B (en) * | 2024-08-05 | 2025-02-25 | 江苏华海测控技术有限公司 | A combined flow meter |
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|---|---|---|---|---|
| CN201277164Y (en) * | 2008-10-16 | 2009-07-22 | 徐正国 | Oil-draining lubricator type oil pump |
| CN114526029A (en) * | 2022-03-08 | 2022-05-24 | 高均红 | Prevent that blowout promptly keeps away christmas tree of dangerous function |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US6666270B2 (en) * | 2002-02-26 | 2003-12-23 | Roy R. Vann | Reciprocating pump vent-dump valve and methods of use |
| CN207568505U (en) * | 2017-12-04 | 2018-07-03 | 中国石油天然气股份有限公司 | Oil production pipe |
| CN208587139U (en) * | 2018-06-19 | 2019-03-08 | 刘园 | A kind of high-voltage energy-saving bleeder that resistance is small |
| CN214576904U (en) * | 2021-03-03 | 2021-11-02 | 山东立鑫石油机械制造有限公司 | Wellhead lifting type underground oil drain device |
| RU2769792C1 (en) * | 2021-07-09 | 2022-04-06 | Публичное акционерное общество «Татнефть» имени В.Д. Шашина | Method for sealing the wellhead operated by the installation of a downhole sucker rod pump with product lifting along the production string, and a self-aligning wellhead seal sealing device for sealing the wellhead when replacing stuffing box seals |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201277164Y (en) * | 2008-10-16 | 2009-07-22 | 徐正国 | Oil-draining lubricator type oil pump |
| CN114526029A (en) * | 2022-03-08 | 2022-05-24 | 高均红 | Prevent that blowout promptly keeps away christmas tree of dangerous function |
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Effective date of registration: 20241219 Address after: 257000 North of South 2nd Road, Dongying District (Dongying High tech Industrial Development Zone), Dongying, Shandong Province, east of No. 14 Road, Shengli Industrial Park Patentee after: DONGYING JINYILAI PETROLEUM MACHINERY Co.,Ltd. Country or region after: China Address before: 257091 No. 228 Nanyi Road, Dongying District, Dongying City, Shandong Province Patentee before: Li Qiwei Country or region before: China |