CN109138892A - High pressure shut-in well oil-water well punching device under pressure and plugging holes device - Google Patents
High pressure shut-in well oil-water well punching device under pressure and plugging holes device Download PDFInfo
- Publication number
- CN109138892A CN109138892A CN201811182209.9A CN201811182209A CN109138892A CN 109138892 A CN109138892 A CN 109138892A CN 201811182209 A CN201811182209 A CN 201811182209A CN 109138892 A CN109138892 A CN 109138892A
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- Prior art keywords
- pressure
- well
- high pressure
- shell
- bar
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000004080 punching Methods 0.000 title claims abstract description 12
- 238000007789 sealing Methods 0.000 claims abstract description 44
- 230000006837 decompression Effects 0.000 claims abstract description 17
- 239000007788 liquid Substances 0.000 claims abstract description 16
- 210000004907 gland Anatomy 0.000 claims description 8
- 244000309464 bull Species 0.000 claims description 3
- 238000005553 drilling Methods 0.000 abstract description 11
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000003912 environmental pollution Methods 0.000 abstract description 4
- 241001074085 Scophthalmus aquosus Species 0.000 abstract 1
- 230000005540 biological transmission Effects 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 208000027418 Wounds and injury Diseases 0.000 description 2
- 230000006378 damage Effects 0.000 description 2
- 238000000280 densification Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 208000014674 injury Diseases 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 230000009347 mechanical transmission Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000013011 mating Effects 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- 238000002360 preparation method 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
-
- 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
- E21B29/00—Cutting or destroying pipes, packers, plugs or wire lines, located in boreholes or wells, e.g. cutting of damaged pipes, of windows; Deforming of pipes in boreholes or wells; Reconditioning of well casings while in the ground
-
- 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
- Y02E10/20—Hydro energy
Landscapes
- 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)
- Pressure Vessels And Lids Thereof (AREA)
- Earth Drilling (AREA)
Abstract
A kind of high pressure shut-in well oil-water well punching device under pressure and plugging holes device, the Airtight cabin body of boring device is located at shell front, high pressure sealing cabin is connect by jointing clip with shell, connection ring is arranged outside shell, fixed plate is located at rear, connection wire rod is connected to connection ring between fixed plate, has decompression port and pressure gauge silk head by clamp nut, stopping shim and dowel hole locking, high pressure sealing cabin between connection wire rod and fixed plate；Boring device can be carried out safely controllable tap operation, after drill bit brill opens the production string outer wall of high pressure oil-water well, highly pressurised liquid in well is transferred to the clear water in high voltage control cabin, pressure gauge is reflected by the principle of waterpower pressure transmission, realize the purpose of admission borehole pressure, meanwhile when exiting drilling tool, clear water is free from environmental pollution.Plugging holes device can effectively prevent borehole pressure and leak the problem of being unable to control, guarantee the shut-in well safety in oil field instead of control valve.
Description
Technical field
The present invention relates to a kind of high pressure shut-in well oil-water well punching device under pressure and plugging holes devices.
Background technique
1, currently, oil field has the largely dead well shut-in well due to Geological Engineering.
If 2, there are internal pressures to verify for original well-filling techniques, well head cap can not be opened, and give pressure recording
Increase production with nearly involving swab and redevelopment has rung oil field using formation production problem , Jie and normally produced.
3, there are biggish security risks and environmental pollution hidden danger.
4, since punching device under pressure needs to install control valve in position of opening, the cost of aperture is improved.
Summary of the invention
The purpose of the present invention is to solve shut-in well oil-water well highly pressurised liquid be present in press and open holes problem in well and
Plugging holes problem, and a kind of high pressure shut-in well oil-water well punching device under pressure and and plugging holes device are provided.
High pressure shut-in well oil-water well punching device under pressure of the invention, includes opening bit, drill holder, pressure relieving end
It is mouth, connecting filament head, high pressure sealing cabin, jointing clip, pressure gauge silk head, radial rotating bar, primary seal component, handwheel, close
Mounting, connection ring, secondary seal cushion rubber, secondary seal component, cushion rubber gland, connection wire rod, radial rotating nut, jackscrew bar,
Fixed plate, clamp nut, stopping shim, dowel hole, pressure power nut, shell and bull stick；
Airtight cabin body is located at shell front, and high pressure sealing cabin is connect by jointing clip with shell, shell housing
If connection ring, fixed plate is located at rear, and connection wire rod is connected to connection ring between fixed plate, connection wire rod and fixed plate
Between by clamp nut, stopping shim and dowel hole locking, high pressure sealing cabin have decompression port and pressure gauge silk head；
The leading portion of radial rotating bar is located in high pressure sealing cabin and shell, and the front end of radial rotating bar passes through connecting filament head
Drill holder is connected, drill holder clamps opening bit, has level-one close between radial rotating bar leading portion and inner walls
Sealing assembly has secondary seal cushion rubber, hull outside and radial rotating bar back segment between radial rotating bar back segment and inner walls
Secondary seal component is set, is arranged cushion rubber gland between the tail portion and radial rotating bar of shell；The tail end of radial rotating bar has
Radial rotating nut, jackscrew bar pass through the rear end that fixed plate withstands on radial rotating nut, and screw thread connects between jackscrew bar and fixed plate
It connects, the tail end of jackscrew bar has pressure power nut.
The course of work of high pressure shut-in well oil-water well punching device under pressure of the invention:
By front end thread and valve prefabricated on aperture pipeline is needed to pass through screw thread and clip high pressure sealing cabin
It is linked.Clear water is injected from decompression port, then is closed with pipe cap；Pressure gauge is connected at pressure gauge silk head, it is quasi- before constructing
Standby work is completed.
In work progress, the control valve of high pressure sealing cabin front end is opened, opening bit is connect with the tube wall of aperture is needed
Touching rotates the contact for unclamping diaphragm seal with radial drive rod by handwheel, makes opening bit, radial drive rod, radial rotating spiral shell
Mother, jackscrew bar, fixed plate, pressure power nut form a complete mechanical transmission mechanism.Pass through matching on radial rotating nut
Set ratchet spanner makes it generate radial rotating, drives opening bit, so that pressure power nut is generated rotation, then revolve by open-end wrench
Turn pressure power nut, so that it is generated radial pressure by fixed plate upper screwed hole and reach so that opening bit be pushed to creep into forward
Drill the purpose of tube wall.
Super hole cutter is after drilling tube wall, and highly pressurised liquid is entered in Airtight cabin body by drill bit in well, due to high densification
Injected clear water in advance in batten down body transmits pressure under the physical characteristic effect of volume invariability in clear water, and well presses high pressure liquid
The pressure of body is transferred at pressure gauge silk head, passes through pressure gauge numerical response borehole pressure situation.If fluid pressure is different in well
Chang Gao then pushes connecting filament head to move backward, since connecting filament head and radial drive rod are designed as fillet swaging, in high-pressure situations
It is lower formed with primary seal component it is setting, to guarantee that mechanical structure is not ejected；Meanwhile it then being rotated by handwheel by diaphragm seal
It is compressed with radial drive rod, forms first road sealing, high-pressure oil gas in well is prevented to leak；It is close by secondary seal cushion rubber, second level again
Sealing assembly and cushion rubber gland match, and two sealings are formed, to guarantee that high-pressure oil gas is to the pollution of environment and to behaviour in well
Make the injury of personnel, guarantees safety in production to greatest extent.
High pressure of the invention is shunt in a well oil-water well press and open holes plugging device, including Unscrew device, sealing bar, pressure release cabin,
Hexagon sleeve head, delivers plugging device, connecting tube, decompression port, tank car liquid receiving port and well sealer at hexagon prism；
The side for delivering plugging device has decompression port, delivers plugging device and is screwed in connecting tube, delivers plugging device upper end
With hexagon prism, pressure release cabin lower section screw thread is screwed in connecting tube, and pressure release cabin side has tank car liquid receiving port, and sealing bar is worn
The roof of pressure release cabin is crossed, is threadedly coupled between sealing bar and the roof of pressure release cabin, the top of sealing bar has Unscrew
Device, the lower end of sealing bar have hexagon sleeve head, and hexagon sleeve head can cover on the hexagon prism for delivering plugging device upper end, well sealer
It can be screwed onto connecting tube, plugging device will be delivered and covered.
The course of work of high pressure shut-in well oil-water well press and open holes plugging device of the invention:
It will be welded in connecting tube and pre-drilled cavity pipeline, connect high pressure boring device.High pressure is opened by high pressure boring device
Oil-water well, after exiting drilling tool, closing control valve.
Drilling tool is removed, the drill bit of drilling tool is removed, plugging device is delivered in installation, is again coupled to aperture drilling tool, opens control
Valve will be delivered plugging device and be put into connecting tube, and plugging device is delivered in precession is located at decompression port in connecting tube, realizes envelope
It is stifled.Control valve is removed, well sealer is screwed onto connecting tube, plugging device will be delivered and covered, realize the mesh for replacing control valve
's.
When being again turned on, well sealer is removed, connects pressure release cabin, plugging device will be delivered by Unscrew device and screwed out, dew
Decompression port out connects tank car by tank car liquid receiving port, realizes leaked liquid in well.
The beneficial effects of the present invention are:
1, boring device of the invention can effectively prevent borehole pressure to leak the problem of being unable to control, and guarantee the envelope in oil field
Well safety, it is free from environmental pollution.
2, boring device of the invention is used and is not limited by place and power source.
3, boring device of the invention can be realized the press and open holes safety operation of high pressure oil-water well, from aperture to exit bore
Having the time is about 5 to 6 minutes.
4, plugging holes device of the invention can be realized the purpose for replacing control valve, save a large amount of cost input.
It effectively prevent borehole pressure to leak the problem of being unable to control, guarantees the shut-in well safety in oil field.
5, plugging holes device of the invention have structure be simple and convenient to operate, safety and environmental protection, feature free from environmental pollution.
Detailed description of the invention
Fig. 1 is high pressure shut-in well oil-water well punching device under pressure structural schematic diagram of the invention.
Fig. 2 is plugging holes device structural schematic diagram of the invention.
Fig. 3 is the status diagram after plugging holes device of the invention blocks.
Fig. 4 is the delivery plugging device structural schematic diagram of plugging holes device of the invention.
Fig. 5 is the sealing bar and hexagon sleeve head structural schematic diagram of plugging holes device of the invention.
Specific embodiment
Refering to Figure 1, high pressure shut-in well oil-water well punching device under pressure of the invention includes opening bit 1, drill bit
Clamper 2, decompression port 3, connecting filament head 4, high pressure sealing cabin 5, jointing clip 6, pressure gauge silk head 7, radial rotating bar 8,
Primary seal component 9, handwheel 10, diaphragm seal 11, connection ring 12, secondary seal cushion rubber 13, secondary seal component 14, cushion rubber gland
15, connection wire rod 16, radial rotating nut 17, jackscrew bar 18, fixed plate 19, clamp nut 20, stopping shim 21, dowel hole
22, pressure power nut 23, shell 24 and bull stick 25
High pressure sealing cabin 5 is located at 24 front of shell, and high pressure sealing cabin 5 is connect by jointing clip 6 with shell 24, shell
It is arranged connection ring 12 outside body 24, fixed plate 19 is located at 24 rear portion of shell, and connection wire rod 16 is connected to connection ring 12 in fixed plate 19
Between, it is locked between connection wire rod 16 and fixed plate 19 by clamp nut 20, stopping shim 21 and dowel hole 22, high densification
Batten down body 5 has decompression port 3 and pressure gauge silk head 7；
The leading portion of radial rotating bar 8 is located in high pressure sealing cabin 5 and shell 24, and the front end of radial rotating bar 8 passes through company
Connect silk head 4 and connect drill holder 2, drill holder 2 clamps opening bit 1,8 leading portion of radial rotating bar and 24 inner wall of shell it
Between there is primary seal component 9, there is between 24 inner wall of 8 back segment of radial rotating bar and shell secondary seal cushion rubber 13, shell 24
Secondary seal component 14 is arranged in external and 8 back segment of radial rotating bar, is arranged cushion rubber between the tail portion and radial rotating bar 8 of shell 24
Gland 15；The tail end of radial rotating bar 8 has radial rotating nut 17, and jackscrew bar 18 passes through fixed plate 19 and withstands on radial rotating spiral shell
The rear end of mother 17, is threadedly coupled between jackscrew bar 18 and fixed plate 19, and the tail end of jackscrew bar 18 has pressure power nut 23.
The high pressure shut-in well oil-water well punching device under pressure course of work of the invention:
By front end thread and valve prefabricated on aperture pipeline is needed to pass through screw thread and clip high pressure sealing cabin 5
It is linked.Clear water is injected from decompression port 3, then is closed with pipe cap；Pressure gauge is connected at pressure gauge silk head 7, before construction
Preparation is completed.
In work progress, the control valve of 5 front end of high pressure sealing cabin is opened, by opening bit 1 and the tube wall for needing aperture
Contact rotates the contact for unclamping diaphragm seal 11 with radial drive rod 8 by handwheel 10, makes 1 opening bit, radial drive rod 8, diameter
A complete mechanical transmission mechanism is formed to rotating nut 17, jackscrew bar 18, fixed plate 19, pressure power nut 23.Pass through diameter
Mating ratchet spanner on rotating nut 17 makes it generate radial rotating, drives opening bit 1, generates pressure power nut 23
Rotation, then pressure power nut 23 is rotated by open-end wrench, so that it is generated radial pressure by 19 upper screwed hole of fixed plate, thus
It pushes opening bit 1 to creep into forward, achievees the purpose that drill tube wall.
Super hole cutter 1 is after drilling tube wall, and highly pressurised liquid is entered in high pressure sealing cabin 5 by drill bit in well, due to high pressure
Injected clear water in advance in sealing cabin 5 transmits pressure under the physical characteristic effect of volume invariability in clear water, and well presses high pressure
The pressure of liquid is transferred at pressure gauge silk head 7, passes through pressure gauge numerical response borehole pressure situation.If fluid pressure in well
It is abnormal high, then push connecting filament head 4 to move backward, since connecting filament head 4 and radial drive rod 5 are designed as fillet swaging, in height
Formed in the case of pressure with primary seal component 9 it is setting, to guarantee that mechanical structure is not ejected；Meanwhile it then being revolved by handwheel 10
Turn to compress diaphragm seal 11 and radial drive rod 8, forms first road sealing, high-pressure oil gas in well is prevented to leak；It is close by second level again
Sealing rubber ring 13, secondary seal component 14 and cushion rubber gland 15 match, and form two sealings, to guarantee high-pressure oil gas in well
Pollution to environment and the injury to operator guarantee safety in production to greatest extent.
High pressure shut-in well oil-water well press and open holes plugging device of the invention, including Unscrew device 26, sealing bar 27, pressure release cabin
Body 28, hexagon prism 30, delivers plugging device 31, connecting tube 32, decompression port 33, tank car liquid receiving port 34 and envelope at hexagon sleeve head 29
Well cap 35；
The side for delivering plugging device 31 has decompression port 33, delivers plugging device 31 and is screwed in connecting tube 32, delivers envelope
Stifled 31 upper end of device has hexagon prism 30, and 28 lower section screw thread of pressure release cabin is screwed in connecting tube 32, and 28 side of pressure release cabin has
Tank car liquid receiving port 34, sealing bar 27 pass through the roof of pressure release cabin 28, screw thread between sealing bar 27 and the roof of pressure release cabin 28
Connection, the top of sealing bar 27 have Unscrew device 26, and the lower end of sealing bar 27 has hexagon sleeve head 29, hexagon sleeve head
29 can cover on the hexagon prism 30 for delivering 31 upper end of plugging device, and well sealer 35 can be screwed onto connecting tube 32, will deliver plugging device
31 cover.
The course of work of high pressure shut-in well oil-water well press and open holes plugging device:
It will be welded in connecting tube 32 and pre-drilled cavity pipeline, connect high pressure boring device.It is opened by high pressure boring device high
Pressure oil well, after exiting drilling tool, closing control valve.
Drilling tool is removed, the drill bit of drilling tool is removed, plugging device 31 is delivered in installation, is again coupled to aperture drilling tool, opens control
Valve processed will be delivered plugging device 31 and be put into connecting tube 32, and plugging device 31 is delivered in precession makes decompression port 33 be located at connecting tube
In 32, realizes and block.Control valve is removed, well sealer 35 is screwed onto connecting tube 32, plugging device 31 will be delivered and covered, realized
Replace the purpose of control valve.
When being again turned on, well sealer 35 is removed, connects pressure release cabin 28, plugging device 31 will be delivered by Unscrew device 26
It screws out, exposes decompression port 33, tank car is connected by tank car liquid receiving port 34, realizes leaked liquid in well.
Claims (2)
- The oil-water well punching device under pressure 1. a kind of high pressure is shunt in a well, it is characterised in that: include opening bit (1), drill holder (2), decompression port (3), connecting filament head (4), high pressure sealing cabin (5), jointing clip (6), pressure gauge silk head (7), radial turn Lever (8), primary seal component (9), handwheel (10), diaphragm seal (11), connection ring (12), secondary seal cushion rubber (13), second level Seal assembly (14), cushion rubber gland (15), connection wire rod (16), radial rotating nut (17), jackscrew bar (18), fixed plate (19), clamp nut (20), stopping shim (21), dowel hole (22), pressure power nut (23), shell (24) and bull stick (25)；High pressure sealing cabin (5) is located at shell (24) front, and high pressure sealing cabin (5) passes through jointing clip (6) and shell (24) Connection, shell (24) are arranged connection ring (12) outside, and fixed plate (19) is located at shell (24) rear portion, and connection wire rod (16) is connected to Ring (12) is connect between fixed plate (19), passes through clamp nut (20), retaining pad between connection wire rod (16) and fixed plate (19) Piece (21) and dowel hole (22) locking, high pressure sealing cabin (5) have decompression port (3) and pressure gauge silk head (7)；The leading portion of radial rotating bar (8) is located in high pressure sealing cabin (5) and shell (24), and the front end of radial rotating bar (8) is logical Connecting filament head (4) connection drill holder (2) is crossed, drill holder (2) clamps opening bit (1), radial rotating bar (8) leading portion There are primary seal component (9) between shell (24) inner wall, have between radial rotating bar (8) back segment and shell (24) inner wall Secondary seal cushion rubber (13), shell (24) is external and secondary seal component (14) are arranged in radial rotating bar (8) back segment, shell (24) Tail portion and radial rotating bar (8) between be arranged cushion rubber gland (15)；The tail end of radial rotating bar (8) has radial rotating nut (17), jackscrew bar (18) passes through the rear end that fixed plate (19) withstand on radial rotating nut (17), jackscrew bar (18) and fixed plate (19) it is threadedly coupled between, the tail end of jackscrew bar (18) has pressure power nut (23).
- The oil-water well press and open holes plugging device 2. a kind of high pressure is shunt in a well, it is characterised in that: including Unscrew device (26), sealing bar (27), pressure release cabin (28), hexagon sleeve head (29), hexagon prism (30), delivery plugging device (31), connecting tube (32), pressure relieving end Mouth (33), tank car liquid receiving port (34) and well sealer (35)；The side for delivering plugging device (31) has decompression port (33), delivers plugging device (31) and is screwed in connecting tube (32), throws Send plugging device (31) upper end that there are hexagon prism (30), pressure release cabin (28) lower section screw thread is screwed on connecting tube (32), pressure release cabin Body (28) side have tank car liquid receiving port (34), sealing bar (27) pass through pressure release cabin (28) roof, sealing bar (27) with let out It is threadedly coupled between the roof of ballasting body (28), the top of sealing bar (27) has Unscrew device (26), sealing bar (27) Lower end has hexagon sleeve head (29), and hexagon sleeve head (29) can cover on the hexagon prism (30) for delivering plugging device (31) upper end, Well sealer (35) can be screwed on connecting tube (32), will be delivered plugging device (31) and covered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182209.9A CN109138892B (en) | 2018-10-11 | 2018-10-11 | High-pressure oil-water well sealing device with pressure hole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811182209.9A CN109138892B (en) | 2018-10-11 | 2018-10-11 | High-pressure oil-water well sealing device with pressure hole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109138892A true CN109138892A (en) | 2019-01-04 |
| CN109138892B CN109138892B (en) | 2023-05-16 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811182209.9A Active CN109138892B (en) | 2018-10-11 | 2018-10-11 | High-pressure oil-water well sealing device with pressure hole |
Country Status (1)
| Country | Link |
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| CN (1) | CN109138892B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112227940A (en) * | 2020-11-18 | 2021-01-15 | 中国石油天然气集团有限公司 | Oil gas well wellhead area is pressed drilling equipment |
| CN112482985A (en) * | 2020-12-15 | 2021-03-12 | 中国石油天然气集团有限公司 | Drilling equipment is pressed in area of oil gas well head |
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| CN105386737A (en) * | 2015-12-03 | 2016-03-09 | 河北博路天宝石油设备制造有限公司 | Blowout preventing hole opener for casing pipe |
| CN105370235A (en) * | 2015-12-15 | 2016-03-02 | 中国石油化工股份有限公司 | Wellhead sealing device |
| CN106368649A (en) * | 2016-10-13 | 2017-02-01 | 西安东新石油设备厂有限公司 | Full-airtight high pressure valve leakage treatment device and method |
| CN106593340A (en) * | 2017-02-08 | 2017-04-26 | 中石化石油工程技术服务有限公司 | Totally-enclosed high-pressure shallow plug drilling device and application method thereof |
| CN207813553U (en) * | 2018-01-25 | 2018-09-04 | 周峰 | A kind of well head drainage blowdown apparatus |
| CN208816070U (en) * | 2018-10-11 | 2019-05-03 | 王瑞东 | A kind of high pressure shut-in well dedicated plugging device of oil-water well press and open holes |
| CN208816071U (en) * | 2018-10-11 | 2019-05-03 | 王瑞东 | A kind of high pressure shut-in well oil-water well punching device under pressure |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112227940A (en) * | 2020-11-18 | 2021-01-15 | 中国石油天然气集团有限公司 | Oil gas well wellhead area is pressed drilling equipment |
| CN112227940B (en) * | 2020-11-18 | 2022-11-29 | 中国石油天然气集团有限公司 | Oil gas well wellhead area is pressed drilling equipment |
| CN112482985A (en) * | 2020-12-15 | 2021-03-12 | 中国石油天然气集团有限公司 | Drilling equipment is pressed in area of oil gas well head |
| CN112482985B (en) * | 2020-12-15 | 2022-06-07 | 中国石油天然气集团有限公司 | Drilling equipment is pressed in area of oil gas well head |
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