CN114198046A - Composite wellhead device for oil drilling and production and installation method thereof - Google Patents
Composite wellhead device for oil drilling and production and installation method thereof Download PDFInfo
- Publication number
- CN114198046A CN114198046A CN202111509320.6A CN202111509320A CN114198046A CN 114198046 A CN114198046 A CN 114198046A CN 202111509320 A CN202111509320 A CN 202111509320A CN 114198046 A CN114198046 A CN 114198046A
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- fixed
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- 238000005553 drilling Methods 0.000 title claims abstract description 23
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 21
- 239000002131 composite material Substances 0.000 title claims abstract description 18
- 238000009434 installation Methods 0.000 title claims abstract description 15
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000001914 filtration Methods 0.000 claims description 28
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 14
- 230000005540 biological transmission Effects 0.000 claims description 14
- 230000000149 penetrating effect Effects 0.000 claims description 6
- 229920000742 Cotton Polymers 0.000 claims description 4
- 238000004891 communication Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 4
- 239000003208 petroleum Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
Images
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
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/02—Surface sealing or packing
- E21B33/03—Well heads; Setting-up thereof
- E21B33/04—Casing heads; Suspending casings or tubings in well heads
- E21B33/047—Casing heads; Suspending casings or tubings in well heads for plural tubing strings
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/02—Subsoil filtering
- E21B43/08—Screens or liners
- E21B43/086—Screens with preformed openings, e.g. slotted liners
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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)
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a composite wellhead device for oil drilling and production and an installation method thereof, relating to the technical field of oil drilling and production and comprising a device body; the communicating pipeline is arranged in the device body; the supporting legs are fixedly connected with the device body and are positioned on the lower surface of the device body; the auxiliary supporting structure is detachably mounted with the supporting legs and is positioned on the outer surfaces of the supporting legs; the connecting pipe is fixedly connected with the device body and is positioned on the outer side surface of the device body; the fixing structure is positioned inside the communicating pipeline; the filter structure is positioned in the communicating pipeline, positioned on the upper surface of the fixing structure and fixedly connected with the inside of the device body through the fixing structure.
Description
Technical Field
The invention relates to the technical field of petroleum drilling and production, in particular to a composite wellhead device for petroleum drilling and an installation method thereof.
Background
The oil production wellhead device is important equipment for oil and gas production, the advantages and disadvantages of the performance of the oil production wellhead device relate to whether an oil and gas well can be safely and efficiently produced, the wellhead device is generally large in size, and therefore a supporting device is often required to be arranged at the wellhead to support the oil and gas well.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a composite wellhead device for oil drilling and production and an installation method thereof, and aims to solve the problems.
(II) technical scheme
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: a composite wellhead device for oil drilling comprises a device body;
the communicating pipeline is arranged in the device body;
the supporting legs are fixedly connected with the device body and are positioned on the lower surface of the device body;
the auxiliary support structure is detachably mounted with the supporting legs and is positioned on the outer surfaces of the supporting legs;
the connecting pipe is fixedly connected with the device body and is positioned on the outer side surface of the device body;
a fixed structure located inside the communication duct;
the filter structure is located inside the communicating pipeline and located on the upper surface of the fixing structure, and the filter structure is fixedly connected with the inside of the device body through the fixing structure.
Preferably, supplementary bearing structure includes supplementary foot, the lateral surface sliding connection of supplementary foot has the gleitbretter, fixedly connected with connects the telescopic link on the gleitbretter, be provided with convenient dismantlement structure on the supplementary foot.
Preferably, the upper surface of supporting legs fixedly connected with first fixed block, the inside of supporting legs is hollow form, the inside of supporting legs is provided with movable threaded rod, the lateral surface of supporting legs rotates and is connected with the screw thread transfer line, the one end fixedly connected with rotation hand wheel of supporting legs is kept away from to the screw thread transfer line, the screw thread transfer line matches each other with movable threaded rod, the outer wall sliding connection of supporting legs has the slider.
Preferably, connect the telescopic link and rotate with the slider and be connected, supplementary foot is through convenient dismantlement structure and first fixed block fixed connection, first fixed block and device body fixed connection.
Preferably, the convenient and fast dismounting structure comprises a first fixing screw and a fixing nut, a slotted hole for rotating the auxiliary pin is formed in the first fixing block, the auxiliary pin is placed in the slotted hole, the first fixing screw penetrates through the first fixing block and the auxiliary pin, and the fixing nut is used for fixing the first fixing screw penetrating through the first fixing block and the auxiliary pin.
Preferably, the filtering structure comprises a second fixing block, the upper surface of the second fixing block is fixedly connected with an activated carbon layer, the upper surface of the activated carbon layer is fixedly connected with a filter paper layer, and the upper surface of the filter paper layer is fixedly connected with filter cotton.
Preferably, the fixed knot constructs including second fixed screw and third fixed screw, the jack has been seted up on the second fixed screw, the third fixed screw runs through the jack, the inside of device body seted up with second fixed screw and third fixed screw assorted thread groove, set up on the device body with second fixed screw and third fixed screw assorted cross the groove, the lower surface and the second fixed screw of second fixed block and third fixed screw contact.
A method for installing a composite wellhead assembly for oil drilling and production, the installation steps comprising:
s1: fixing auxiliary feet, inserting the auxiliary feet into the slotted holes in the first fixing block, penetrating the first fixing block and the auxiliary feet by using first fixing screws, taking up fixing nuts, screwing and fixing the fixing nuts, fixing the auxiliary feet on the first fixing block, and fixing the auxiliary feet on the other fixing positions in the same fixing mode;
s2: adjusting the auxiliary supporting structure, rotating the rotating hand wheel, driving the sliding block and the movable threaded rod to move through the transmission of the threaded transmission rod, adjusting the position of the auxiliary foot, and placing the auxiliary foot on the ground to finish the adjustment;
s3: placing a filtering structure, slowly placing the filtering structure in the communicating pipeline from the lower part of the communicating pipeline, and lifting the filtering structure by hands;
s4: fixing the filtration, penetrating through the device body with the second fixed screw, aim at inside thread groove, rotate and fix the second fixed screw, put down the hand that holds in the palm the filtration, aim at the jack with the third fixed screw, through in the past, rotate and fix the third fixed screw, accomplish the installation, use fixed knot to construct and hold up the filtration fixed.
Preferably, the auxiliary foot is provided with a sliding chute for sliding the sliding sheet, and the connecting telescopic rod is adjusted in a telescopic mode under the action of external force.
Preferably, the second fixing block is circular, and the second fixing screw is larger in size than the third fixing screw.
(III) advantageous effects
The invention has the beneficial effects that:
1. the combined type wellhead device for oil drilling and production and the installation method thereof are characterized in that auxiliary feet are inserted into a slotted hole in a first fixing block, a first fixing screw penetrates through the first fixing block and the auxiliary feet, a fixing nut is taken up and screwed to fix the fixing nut, the auxiliary feet are fixed on the first fixing block, the other fixing positions also adopt the same fixing mode, the auxiliary feet are fixedly installed one by one, a rotating hand wheel is rotated, the movement of a sliding block and a movable threaded rod is driven through the transmission of a threaded transmission rod, the position of the auxiliary feet is adjusted, the auxiliary feet are placed on the ground, the adjustment is completed, the weight can be effectively shared, the burden of a supporting device is reduced, the internal structure is more stably used, and convenience is provided.
2. This combined type wellhead assembly is adopted in oil drilling and installation method, slowly place filtration from the lower part of intercommunication pipeline including, hold up with the hand, run through the device body with the second fixed screw, aim at inside thread groove, rotate and fix the second fixed screw, put down the hand that holds in the palm filtration, aim at the jack with the third fixed screw, run through in the past, rotate and fix the third fixed screw, accomplish the installation, it is fixed to use fixed structure to hold up the filtration, it is convenient to dismantle the installation, the person's of facilitating the use's use, the effectual impurity that has filtered in the oil.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural diagram of the present invention;
FIG. 3 is a schematic diagram of an auxiliary support structure according to the present invention;
FIG. 4 is an enlarged, exploded view taken at A in FIG. 3 according to the present invention;
FIG. 5 is a schematic view of a filter arrangement according to the present invention;
FIG. 6 is a schematic view of a fastening structure of the present invention;
FIG. 7 is a schematic diagram of a fixed structure according to the present invention;
fig. 8 is a diagram of the installation steps of the present invention.
In the figure: 1. a communicating pipe; 2. a device body; 3. supporting legs; 4. an auxiliary support structure; 5. a connecting pipe; 6. a filter structure; 7. a fixed structure; 8. the structure is convenient and fast to disassemble; 9. an auxiliary foot; 10. sliding blades; 11. connecting a telescopic rod; 12. a first fixed block; 13. a movable threaded rod; 14. a slider; 15. rotating a hand wheel; 16. a threaded drive link; 17. a first fixing screw; 18. fixing a nut; 19. filtering cotton; 20. a filter paper layer; 21. an activated carbon layer; 22. a second fixed block; 23. a second fixing screw; 24. a jack; 25. and a third fixing screw.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 to 8, the present invention provides a technical solution: a composite wellhead device for oil drilling comprises a device body 2;
the communication pipeline 1 is arranged in the device body 2, and the communication pipeline 1 is arranged in the device body 2;
the supporting leg 3 is fixedly connected with the device body 2, and the supporting leg 3 is positioned on the lower surface of the device body 2;
the auxiliary supporting structure 4 is detachably mounted with the supporting legs 3, and the auxiliary supporting structure 4 is positioned on the outer surfaces of the supporting legs 3;
the connecting pipe 5 is fixedly connected with the device body 2, and the connecting pipe 5 is positioned on the outer side surface of the device body 2;
the fixed structure 7, the fixed structure 7 locates inside the communicating pipe 1;
Further, supplementary bearing structure 4 includes supplementary foot 9, and the lateral surface sliding connection of supplementary foot 9 has gleitbretter 10, and fixedly connected with connects telescopic link 11 on the gleitbretter 10 is provided with convenient dismantlement structure 8 on the supplementary foot 9.
Further, the upper surface of the supporting leg 3 is fixedly connected with a first fixing block 12, the inside of the supporting leg 3 is hollow, a movable threaded rod 13 is arranged inside the supporting leg 3, the outer side surface of the supporting leg 3 is rotatably connected with a threaded transmission rod 16, one end, far away from the supporting leg 3, of the threaded transmission rod 16 is fixedly connected with a rotating hand wheel 15, the threaded transmission rod 16 is matched with the movable threaded rod 13, and the outer wall of the supporting leg 3 is slidably connected with a sliding block 14.
Further, connect telescopic link 11 and slider 14 and rotate and be connected, supplementary foot 9 is through convenient dismantlement structure 8 and first fixed block 12 fixed connection, first fixed block 12 and device body 2 fixed connection.
Further, the convenient and fast dismounting structure 8 comprises a first fixing screw 17 and a fixing nut 18, a slot hole for the rotation of the auxiliary pin 9 is formed in the first fixing block 12, the auxiliary pin 9 is placed in the slot hole, the first fixing screw 17 penetrates through the first fixing block 12 and the auxiliary pin 9, and the fixing nut 18 is used for fixing the first fixing screw 17 penetrating through the first fixing block 12 and the auxiliary pin 9.
Further, the filtering structure 6 comprises a second fixing block 22, an activated carbon layer 21 is fixedly connected to the upper surface of the second fixing block 22, a filter paper layer 20 is fixedly connected to the upper surface of the activated carbon layer 21, and filter cotton 19 is fixedly connected to the upper surface of the filter paper layer 20.
Further, the fixing structure 7 includes a second fixing screw 23 and a third fixing screw 25, a jack 24 is provided on the second fixing screw 23, the third fixing screw 25 penetrates through the jack 24, a thread groove matched with the second fixing screw 23 and the third fixing screw 25 is provided in the device body 2, and a lower surface of the second fixing block 22 is in contact with the second fixing screw 23 and the third fixing screw 25.
A method for installing a composite wellhead assembly for oil drilling and production, the installation steps comprising:
s1: fixing the auxiliary feet 9, inserting the auxiliary feet 9 into the slotted holes in the first fixing block 12, penetrating the first fixing block 12 and the auxiliary feet 9 by using first fixing screws 17, taking up the fixing nuts 18, screwing the fixing nuts 18 for fixing, fixing the auxiliary feet 9 on the first fixing block 12, and fixing the other fixing positions on the first fixing block 12 in the same fixing mode;
s2: adjusting the auxiliary supporting structure 4, rotating a rotating hand wheel 15, driving the sliding block 14 and the movable threaded rod 13 to move through the transmission of a threaded transmission rod 16, adjusting the position of the auxiliary foot 9, and placing the auxiliary foot 9 on the ground to finish adjustment;
s3: placing the filtering structure 6, slowly placing the filtering structure 6 in the communicating pipeline 1 from the lower part, and lifting the filtering structure by hands;
s4: fixed filtration 6 runs through device body 2 with second fixed screw 23, aims at inside thread groove, rotates and fixes second fixed screw 23, puts down the hand that holds in the palm filtration 6, aligns jack 24 with third fixed screw 25, runs through in the past, rotates and fixes third fixed screw 25, accomplishes the installation, uses fixed knot to construct 7 and holds up filtration 6 fixedly.
Furthermore, the auxiliary leg 9 is provided with a sliding groove for the sliding of the sliding piece 10, and the connecting telescopic rod 11 is adjusted by itself under the action of external force.
Further, the second fixing block 22 is annular, and the second fixing screw 23 has a larger size than the third fixing screw 25.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides an oil drilling adopts combined type wellhead assembly which characterized in that: comprises a device body (2);
the device comprises a communicating pipeline (1), wherein the communicating pipeline (1) is arranged in a device body (2);
the supporting legs (3) are fixedly connected with the device body (2), and the supporting legs (3) are positioned on the lower surface of the device body (2);
the auxiliary support structure (4) is detachably mounted with the supporting feet (3), and the auxiliary support structure (4) is positioned on the outer surfaces of the supporting feet (3);
the connecting pipe (5) is fixedly connected with the device body (2), and the connecting pipe (5) is positioned on the outer side surface of the device body (2);
a fixed structure (7), the fixed structure (7) being located inside the communication duct (1);
the filter structure (6), the filter structure (6) are located the inside of communicating pipe (1), the filter structure (6) are located the upper surface of fixed knot structure (7), the inside fixed connection of filter structure (6) through fixed knot structure (7) and device body (2).
2. The composite wellhead assembly for oil drilling and production according to claim 1, wherein: auxiliary supporting structure (4) are including supplementary foot (9), the lateral surface sliding connection of supplementary foot (9) has gleitbretter (10), fixedly connected with connects telescopic link (11) on gleitbretter (10), be provided with convenient dismantlement structure (8) on supplementary foot (9).
3. The composite wellhead assembly for oil drilling and production according to claim 1, wherein: the utility model discloses a supporting legs, including supporting legs (3), the last fixed surface of supporting legs (3) is connected with first fixed block (12), the inside of supporting legs (3) is hollow form, the inside of supporting legs (3) is provided with movable threaded rod (13), the lateral surface of supporting legs (3) rotates and is connected with screw transmission pole (16), the one end fixedly connected with rotation hand wheel (15) of supporting legs (3) are kept away from in screw transmission pole (16), screw transmission pole (16) and movable threaded rod (13) are matchd each other, the outer wall sliding connection of supporting legs (3) has slider (14).
4. The composite wellhead assembly for oil drilling and production according to claim 2, wherein: connect telescopic link (11) and slider (14) and rotate and be connected, supplementary foot (9) are through convenient dismantlement structure (8) and first fixed block (12) fixed connection, first fixed block (12) and device body (2) fixed connection.
5. The composite wellhead assembly for oil drilling and production according to claim 2, wherein: convenient dismantlement structure (8) include first fixed screw (17) and fixation nut (18), set up on first fixed block (12) and supply supplementary foot (9) pivoted slotted hole, supplementary foot (9) are place in the slotted hole, first fixed screw (17) run through first fixed block (12) and supplementary foot (9), fixation nut (18) are used for fixing first fixed screw (17) that run through first fixed block (12) and supplementary foot (9).
6. The composite wellhead assembly for oil drilling and production according to claim 1, wherein: the filter structure (6) comprises a second fixing block (22), the upper surface of the second fixing block (22) is fixedly connected with an activated carbon layer (21), the upper surface of the activated carbon layer (21) is fixedly connected with a filter paper layer (20), and the upper surface of the filter paper layer (20) is fixedly connected with filter cotton (19).
7. The composite wellhead assembly for oil drilling and production according to claim 1, wherein: fixed knot constructs (7) and includes second fixed screw (23) and third fixed screw (25), jack (24) have been seted up on second fixed screw (23), third fixed screw (25) run through jack (24), the inside of device body (2) is seted up with second fixed screw (23) and third fixed screw (25) assorted thread groove, set up on device body (2) with second fixed screw (23) and third fixed screw (25) assorted cross the groove, the lower surface and second fixed screw (23) and third fixed screw (25) of second fixed block (22) contact.
8. A method for installing a composite wellhead assembly for oil drilling and production, comprising the steps of:
s1: fixing auxiliary feet (9), inserting the auxiliary feet (9) into slotted holes in a first fixing block (12), penetrating the first fixing block (12) and the auxiliary feet (9) by using first fixing screws (17), taking up fixing nuts (18), screwing the fixing nuts (18) for fixing, fixing the auxiliary feet (9) on the first fixing block (12), and fixing the other fixing positions in the same fixing mode to fix the auxiliary feet (9) one by one;
s2: adjusting the auxiliary supporting structure (4), rotating a rotating hand wheel (15), driving the sliding block (14) and the movable threaded rod (13) to move through the transmission of a threaded transmission rod (16), adjusting the position of the auxiliary foot (9), and placing the auxiliary foot (9) on the ground to finish adjustment;
s3: placing a filtering structure (6), slowly placing the filtering structure (6) from the lower part of the communicating pipeline (1) and lifting the filtering structure by hands;
s4: fixed filtration (6), run through device body (2) with second fixed screw (23), aim at inside thread groove, rotate and fix second fixed screw (23), put down the hand that holds in the palm filtration (6), aim at jack (24) with third fixed screw (25), run through the past, rotate and fix third fixed screw (25), accomplish the installation, use fixed knot structure (7) to hold up filtration (6) fixedly.
9. The method of installing an oil drilling and production composite wellhead assembly of claim 8, wherein: the auxiliary foot (9) is provided with a sliding chute for sliding the sliding sheet (10), and the connecting telescopic rod (11) is adjusted in a telescopic mode under the action of external force.
10. The method of installing an oil drilling and production composite wellhead assembly of claim 8, wherein: the second fixing block (22) is annular, and the second fixing screw (23) is larger in size than the third fixing screw (25).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111509320.6A CN114198046B (en) | 2021-12-10 | 2021-12-10 | Combined wellhead device for petroleum drilling and installation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111509320.6A CN114198046B (en) | 2021-12-10 | 2021-12-10 | Combined wellhead device for petroleum drilling and installation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114198046A true CN114198046A (en) | 2022-03-18 |
| CN114198046B CN114198046B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111509320.6A Active CN114198046B (en) | 2021-12-10 | 2021-12-10 | Combined wellhead device for petroleum drilling and installation method thereof |
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| Country | Link |
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| CN (1) | CN114198046B (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208025080U (en) * | 2017-12-31 | 2018-10-30 | 郑州元泽信息技术有限公司 | The instrument of surveying and mapping tripod being convenient for carrying |
| CN208934640U (en) * | 2018-11-01 | 2019-06-04 | 徐春蓉 | A kind of novel oil production multifunctional well head |
| CN210600893U (en) * | 2019-07-18 | 2020-05-22 | 国家电投集团电站运营技术（北京）有限公司 | High-altitude inspection device |
| CN212105814U (en) * | 2020-04-17 | 2020-12-08 | 美钻石油钻采系统（南京）有限公司 | Christmas tree with filtering function |
| CN212319286U (en) * | 2020-06-02 | 2021-01-08 | 高翔 | Automatic telescopic adjustable photographic support frame |
| CN112983330A (en) * | 2021-03-15 | 2021-06-18 | 淮阴工学院 | Christmas tree wellhead device |
| CN213492397U (en) * | 2020-11-03 | 2021-06-22 | 成都理工大学工程技术学院 | Nuclear power station reactor core filter screen |
-
2021
- 2021-12-10 CN CN202111509320.6A patent/CN114198046B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN208025080U (en) * | 2017-12-31 | 2018-10-30 | 郑州元泽信息技术有限公司 | The instrument of surveying and mapping tripod being convenient for carrying |
| CN208934640U (en) * | 2018-11-01 | 2019-06-04 | 徐春蓉 | A kind of novel oil production multifunctional well head |
| CN210600893U (en) * | 2019-07-18 | 2020-05-22 | 国家电投集团电站运营技术（北京）有限公司 | High-altitude inspection device |
| CN212105814U (en) * | 2020-04-17 | 2020-12-08 | 美钻石油钻采系统（南京）有限公司 | Christmas tree with filtering function |
| CN212319286U (en) * | 2020-06-02 | 2021-01-08 | 高翔 | Automatic telescopic adjustable photographic support frame |
| CN213492397U (en) * | 2020-11-03 | 2021-06-22 | 成都理工大学工程技术学院 | Nuclear power station reactor core filter screen |
| CN112983330A (en) * | 2021-03-15 | 2021-06-18 | 淮阴工学院 | Christmas tree wellhead device |
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| Publication number | Publication date |
|---|---|
| CN114198046B (en) | 2024-03-22 |
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