CN112228010A - Safety device for petroleum underground operation - Google Patents
Safety device for petroleum underground operation Download PDFInfo
- Publication number
- CN112228010A CN112228010A CN202011217775.6A CN202011217775A CN112228010A CN 112228010 A CN112228010 A CN 112228010A CN 202011217775 A CN202011217775 A CN 202011217775A CN 112228010 A CN112228010 A CN 112228010A
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- plate
- fixedly connected
- oil
- connecting piece
- moving plate
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- 239000003208 petroleum Substances 0.000 title abstract description 20
- 230000007246 mechanism Effects 0.000 claims abstract description 38
- 239000003129 oil well Substances 0.000 claims abstract description 13
- 230000000670 limiting effect Effects 0.000 claims description 26
- 230000002146 bilateral effect Effects 0.000 claims description 4
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 10
- 230000008569 process Effects 0.000 abstract description 7
- 230000003028 elevating effect Effects 0.000 abstract description 3
- 239000003921 oil Substances 0.000 description 28
- 230000009471 action Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000002689 soil Substances 0.000 description 3
- 230000008859 change Effects 0.000 description 2
- 230000008021 deposition Effects 0.000 description 2
- 239000003337 fertilizer Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000000575 pesticide Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000008280 blood Substances 0.000 description 1
- 210000004369 blood Anatomy 0.000 description 1
- 238000009835 boiling Methods 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 150000001924 cycloalkanes Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000839 emulsion Substances 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 239000010734 process oil Substances 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000006467 substitution reaction Methods 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
- E21B41/00—Equipment or details not covered by groups E21B15/00 - E21B40/00
- E21B41/0021—Safety devices, e.g. for preventing small objects from falling into the borehole
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)
- Earth Drilling (AREA)
Abstract
The invention discloses a safety protection device for petroleum underground operation, which comprises a first movable plate and a second movable plate, wherein the bottom of the first movable plate is fixedly connected with a first supporting plate, the bottom of the second movable plate is fixedly connected with a second supporting plate, and the top of the first movable plate is provided with a first clamping mechanism. This safety device that oil borehole operation was used, through using first chucking mechanism and second chucking mechanism, make first backup pad and second backup pad laminate with the wall of a well, when oil pipe and downhole equipment carried out elevating movement in the sleeve pipe, can avoid causing the striking to the well head, prevent oil pollution, solved current oil and oil pipe and downhole equipment in hoist and mount process and can generally lead to the fact the striking to the well head of oil well, long-time striking can make the earth of well head slump, make the oil that draws up receive the problem of pollution.
Description
Technical Field
The invention relates to the technical field of petroleum underground operation construction, in particular to a safety protection device for petroleum underground operation.
Background
Petroleum, one of the main objects of geological exploration, is a viscous, dark brown liquid, known as "industrial blood". The upper part of the crust has oil storage. The main component is a mixture of various alkanes, cycloalkanes and aromatics. The oil formation mechanism of petroleum has two theories of biological deposition and oil change and petrochemical oil, the former is widely accepted, and the petroleum is formed by the long evolution of organisms in ancient oceans or lakes, belongs to biological deposition and oil change and cannot be regenerated; the latter considers that oil is produced from the carbon in the earth's crust itself, is biologically unrelated and is renewable. Petroleum is used mainly as fuel and gasoline, and also as a raw material for many chemical industry products such as solutions, fertilizers, pesticides, and plastics. The properties of petroleum vary with the place of production, the density is 0.8-1.0 g/cm3, the viscosity range is wide, the solidifying point difference is large, the boiling point range is from normal temperature to above 500 ℃, the petroleum can be dissolved in various organic solvents, is insoluble in water, but can form emulsion with water. The composition and appearance of the oil in different fields can be very different. Petroleum is also a raw material for many chemical industry products such as solvents, fertilizers, pesticides, and plastics. In fact, petroleum is a non-renewable feedstock.
The invention provides a safety protection device for oil underground operation, which aims to solve the problems that in the existing oil production process, well repair or oil pipe replacement operation is frequently required, underground equipment is generally required to be hoisted by an overhead crane, the oil pipe and the underground equipment generally impact a wellhead of an oil well in the hoisting process, and soil at the wellhead is collapsed due to long-time impact, so that extracted oil is polluted.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a safety protection device for petroleum underground operation, which solves the problems that the oil pipe and underground equipment usually impact the wellhead of an oil well in the hoisting process of the existing petroleum, and the soil of the wellhead is collapsed due to long-time impact, so that the extracted petroleum is polluted.
In order to achieve the purpose, the invention is realized by the following technical scheme: the utility model provides a safety device that oil borehole operation was used, includes the sleeve pipe, sheathed tube surface is first connecting piece of fixedly connected with and second connecting piece respectively, the sheathed tube surface is provided with supporting mechanism.
The supporting mechanism comprises a first moving plate and a second moving plate, the bottom of the first moving plate is fixedly connected with a first supporting plate, the bottom of the second moving plate is fixedly connected with a second supporting plate, the top of the first moving plate is provided with a first clamping mechanism, the top of the second moving plate is provided with a second clamping mechanism, the top of the first moving plate is fixedly connected with a first connecting plate, and the top of the second moving plate is fixedly connected with a second connecting plate.
Preferably, the first connecting piece comprises a fixing plate and a clamping plate, a clamping groove is formed between the fixing plate and the clamping plate, the first connecting piece and the second connecting piece are identical in structure, and the first connecting plate and the second connecting plate are identical in structure.
Preferably, first chucking mechanism includes the riser, the inside threaded connection of riser has first lead screw, the first rotation dish of one end fixedly connected with of first lead screw, the inside of riser and the below that is located first lead screw run through there is first gag lever post.
Preferably, the second clamping mechanism comprises a second vertical plate, the inner thread of the second vertical plate is connected with a second lead screw, one end of the second lead screw is fixedly connected with a second rotating disc, and a second limiting rod penetrates through the inner portion of the second vertical plate and the lower portion of the second lead screw.
Preferably, one side of first backup pad is the arc, the front of second backup pad is the arc, first movable plate is provided with two along sleeve pipe bilateral symmetry, the second movable plate is provided with two along sleeve pipe longitudinal symmetry.
Preferably, the first connecting pieces are symmetrically arranged in the front and back direction of the sleeve, the second connecting pieces are symmetrically arranged in the left and right direction of the sleeve, the top of the first connecting plate is provided with a groove, and the outer surface of the clamping plate is matched with the inside of the groove.
Preferably, the other end of the first screw rod is rotatably connected with one side of the first connecting plate, one end of the first limiting rod is fixedly connected with one side of the first connecting plate, and the bottom of the first vertical plate is fixedly connected with the top of the first moving plate.
Preferably, the other end of the second screw rod is rotatably connected with the front face of the second connecting plate, one end of the second limiting rod is fixedly connected with the front face of the second connecting plate, and the bottom of the second vertical plate is fixedly connected with the top of the second moving plate.
Advantageous effects
The invention provides a safety protection device for petroleum underground operation. Compared with the prior art, the method has the following beneficial effects:
(1) the safety protection device for the petroleum underground operation comprises a supporting mechanism, a first movable plate and a second movable plate, wherein the bottom of the first movable plate is fixedly connected with a first supporting plate, the bottom of the second movable plate is fixedly connected with a second supporting plate, the top of the first movable plate is provided with a first clamping mechanism, the top of the second movable plate is provided with a second clamping mechanism, the top of the first movable plate is fixedly connected with a first connecting plate, the top of the second movable plate is fixedly connected with a second connecting plate, the first clamping mechanism comprises a first vertical plate, the inner thread of the first vertical plate is connected with a first lead screw, one end of the first lead screw is fixedly connected with a first rotating disc, the second clamping mechanism comprises a second vertical plate, the inner thread of the second vertical plate is connected with a second lead screw, one end of the second lead screw is fixedly connected with a second rotating disc, and the movable plate and the second, The second movable plate, first backup pad, the second backup pad, first chucking mechanism, second chucking mechanism, the cooperation of first connecting plate and second connecting plate is used, through using first chucking mechanism and second chucking mechanism, make first backup pad and second backup pad laminate with the wall of a well, when oil pipe and downhole equipment carried out elevating movement in the sleeve pipe, can avoid causing the striking to the well head, prevent oil pollution, solved current oil and can cause the striking to the well head of oil well with downhole equipment in hoist and mount in-process oil pipe, long-time striking can make the earth of well head collapse, make the oil that draws up receive the problem of pollution.
(2) The safety protection device for the petroleum underground operation is characterized in that a first limiting rod penetrates through the interior of a first vertical plate and the position below a first screw rod, one end of the first limiting rod is fixedly connected with one side of a first connecting plate, the bottom of the first vertical plate is fixedly connected with the top of a first movable plate, a second limiting rod penetrates through the interior of a second vertical plate and the position below a second screw rod, one end of the second limiting rod is fixedly connected with the front side of a second connecting plate, the bottom of the second vertical plate is fixedly connected with the top of a second movable plate, and by arranging the first limiting rod and the second limiting rod, when the first rotating disc and the second rotating disc are rotated to enable the first supporting plate and the second supporting plate to be attached to the well wall, the first vertical plate and the second vertical plate are limited, and then carry on spacingly to first movable plate and second movable plate to improve first movable plate and second movable plate motion stability.
(3) This safety device that oil borehole operation was used, through including fixed plate and cardboard at first connecting piece, be provided with the draw-in groove between fixed plate and the cardboard, first connecting piece is the same with the structure of second connecting piece, first connecting piece is the same with the structure of second connecting plate, first connecting piece is provided with two along the sleeve pipe longitudinal symmetry, the second connecting piece is provided with two along the sleeve pipe bilateral symmetry, the top of first connecting plate is seted up flutedly, the surface of cardboard and the inside looks adaptation of recess, through the fixed plate, the cardboard, the draw-in groove, the second connecting piece, a groove, the cooperation of first connecting plate and second connecting plate is used, utilize the cardboard card in the recess, convenient and fast assembles the device, when not using, be convenient for accomodate, and is effectual, make things convenient for people to use, and is worth promoting.
Drawings
FIG. 1 is a front view of the outer structure of the present invention;
FIG. 2 is a top view of the outer structure of the present invention;
FIG. 3 is an enlarged view of a portion of the invention at A in FIG. 1;
FIG. 4 is an enlarged view of a portion of the present invention at B of FIG. 1;
FIG. 5 is a perspective view of the external structure of the first connecting member of the present invention;
FIG. 6 is a perspective view of the external structure of the first connecting plate of the present invention;
fig. 7 is a top view of the outer structure of the sleeve, first support plate and second support plate of the present invention.
In the figure: the device comprises a sleeve 1, a first connecting piece 2, a fixing plate 21, a clamping plate 22, a clamping groove 23, a clamping groove 3, a second connecting piece 4, a supporting mechanism 41, a first moving plate 42, a second moving plate 43, a first supporting plate 44, a second supporting plate 45, a first clamping mechanism 451, a first vertical plate 452, a first screw rod 453, a first rotating disc 454, a first limiting rod 46, a second clamping mechanism 461, a second vertical plate 462, a second screw rod 463, a second rotating disc 464, a second limiting rod 47, a first connecting plate 48, a second connecting plate 48 and a groove 5.
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.
Referring to fig. 1-7, the present invention provides a technical solution: a safety protection device for petroleum underground operation comprises a casing 1, the outer surface of the casing 1 is fixedly connected with a first connecting piece 2 and a second connecting piece 3 respectively, the first connecting piece 2 is symmetrically arranged two along the front and back of the casing 1, the second connecting piece 3 is symmetrically arranged two along the left and right of the casing 1, the top of a first connecting plate 47 is provided with a groove 5, the outer surface of a clamping plate 22 is matched with the inside of the groove 5, the clamping plate 22 is matched with the inner part of the groove 5 through a fixing plate 21, the clamping groove 22, a clamping groove 23, the second connecting piece 3, the groove 5, the first connecting plate 47 and a second connecting plate 48, the clamping plate 22 is clamped in the groove 5, the device is conveniently and quickly assembled, when not used, the device is convenient to store, the effect is good, the device is convenient for people to use and is worth popularizing, the first connecting piece 2 comprises the fixing plate, the first connecting piece 2 and the second connecting piece 3 have the same structure, the first connecting plate 47 and the second connecting plate 48 have the same structure, and the outer surface of the sleeve 1 is provided with a supporting mechanism 4; the supporting mechanism 4 comprises a first moving plate 41 and a second moving plate 42, the bottom of the first moving plate 41 is fixedly connected with a first supporting plate 43, one side of the first supporting plate 43 is arc-shaped, the front surface of the second supporting plate 44 is arc-shaped, the first moving plate 41 is symmetrically arranged at the left and right sides along the sleeve 1, the second moving plate 42 is symmetrically arranged at the front and back sides along the sleeve 1, the bottom of the second moving plate 42 is fixedly connected with a second supporting plate 44, the top of the first moving plate 41 is provided with a first clamping mechanism 45, the first clamping mechanism 45 comprises a first vertical plate 451, the inner thread of the first vertical plate 451 is connected with a first screw 452, the other end of the first screw 452 is rotatably connected with one side of the first connecting plate 47, one end of a first limiting rod 454 is fixedly connected with one side of the first connecting plate 47, the bottom of the first vertical plate 451 is fixedly connected with the top of the first moving plate 41, and by arranging the first limiting, when the first rotating disc 453 and the second rotating disc 463 are rotated to enable the first supporting plate 43 and the second supporting plate 44 to be attached to the well wall, the first vertical plate 451 and the second vertical plate 461 are limited, and the first moving plate 41 and the second moving plate 42 are limited, so that the motion stability of the first moving plate 41 and the second moving plate 42 is improved, one end of the first lead screw 452 is fixedly connected with the first rotating disc 453, a first limiting rod 454 penetrates through the inside of the first vertical plate 451 and below the first lead screw 452, the top of the second moving plate 42 is provided with a second clamping mechanism 46, the second clamping mechanism 46 comprises the second vertical plate 461, the inside of the second vertical plate 461 is in threaded connection with a second lead screw 462, the other end of the second lead screw 462 is rotatably connected with the front face of the second connecting plate 48, one end of the second limiting rod 464 is fixedly connected with the front face of the second connecting plate 48, the bottom of the second vertical plate 461 is fixedly connected with the top of the second moving plate 42, one end of the second lead screw 462 is fixedly connected with a second rotating disc 463, a second limiting rod 464 penetrates through the inside of the second vertical plate 461 and is positioned below the second lead screw 462, the top of the first moving plate 41 is fixedly connected with a first connecting plate 47, the top of the second moving plate 42 is fixedly connected with a second connecting plate 48, the first moving plate 41, the second moving plate 42, the first supporting plate 43, the second supporting plate 44, the first clamping mechanism 45, the second clamping mechanism 46, the first connecting plate 47 and the second connecting plate 48 are matched for use, the first clamping mechanism 45 and the second clamping mechanism 46 are used for enabling the first supporting plate 43 and the second supporting plate 44 to be attached to the well wall, when the oil pipe and the underground equipment perform lifting movement in the casing 1, the impact on the well head can be avoided, the oil pollution is prevented, the problem that the existing oil pipe and the underground equipment generally impact the well head of an oil well in the hoisting process is solved, the long-time impact can cause the soil at the well head to collapse, so that the extracted oil is polluted.
During operation, the clamping plate 22 on the first connecting piece 2 is inserted into the groove 5 on the first connecting plate 47, so that the first connecting piece 2 and the first connecting plate 47 can be inserted, the second connecting piece 3 and the second connecting plate 48 can be inserted, the device can be conveniently and quickly assembled, when not in use, the device is convenient to store, has good effect, is convenient for people to use, and is worthy of popularization, then, the device is placed at a wellhead, the first vertical plate 451 slides along the first limiting rod 454 by rotating the first rotating disc 453 under the limiting action of the first limiting rod 454, so as to drive the first moving plate 41 and the first supporting plate 43 to move, so that the first supporting plate 43 is attached to a well wall, and the second rotating disc 463 is rotated, so that under the limiting action of the second limiting rod 464, the second vertical plate 461 slides along the second limiting rod 464, and then drive second movable plate 42 and the motion of second backup pad 44, and then second backup pad 44 laminates with the wall of a well, and then realize the device and implement fixed mounting in well head department, afterwards, place oil pipe and downhole equipment and carry out the operation in sleeve pipe 1 department, and when oil pipe and downhole equipment carried out elevating movement in sleeve pipe 1, can avoid causing the striking to the well head, prevent oil pollution, and then avoided current oil pipe and downhole equipment to lead to the fact the striking to the well head of oil well in hoist and mount process, long-time striking can make the earth of well head collapse, make the oil that draws up receive the problem of pollution.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (8)
1. A safety device for oil downhole operation comprises a casing (1), and is characterized in that: the outer surface of the sleeve (1) is fixedly connected with a first connecting piece (2) and a second connecting piece (3) respectively, and the outer surface of the sleeve (1) is provided with a supporting mechanism (4);
the supporting mechanism (4) comprises a first moving plate (41) and a second moving plate (42), a first supporting plate (43) is fixedly connected to the bottom of the first moving plate (41), a second supporting plate (44) is fixedly connected to the bottom of the second moving plate (42), a first clamping mechanism (45) is arranged at the top of the first moving plate (41), a second clamping mechanism (46) is arranged at the top of the second moving plate (42), a first connecting plate (47) is fixedly connected to the top of the first moving plate (41), and a second connecting plate (48) is fixedly connected to the top of the second moving plate (42).
2. A safety shield for use in oil well operations, as defined in claim 1, wherein: the first connecting piece (2) comprises a fixing plate (21) and a clamping plate (22), a clamping groove (23) is formed between the fixing plate (21) and the clamping plate (22), the first connecting piece (2) is identical to the second connecting piece (3) in structure, and the first connecting plate (47) is identical to the second connecting plate (48) in structure.
3. A safety shield for use in oil well operations, as defined in claim 1, wherein: the first clamping mechanism (45) comprises a first vertical plate (451), a first screw rod (452) is connected to the inner thread of the first vertical plate (451), a first rotating disc (453) is fixedly connected to one end of the first screw rod (452), and a first limiting rod (454) penetrates through the inner portion of the first vertical plate (451) and the lower portion of the first screw rod (452).
4. A safety shield for use in oil well operations, as defined in claim 1, wherein: the second clamping mechanism (46) comprises a second vertical plate (461), a second lead screw (462) is connected to the inner thread of the second vertical plate (461), a second rotating disc (463) is fixedly connected to one end of the second lead screw (462), and a second limiting rod (464) penetrates through the inner portion of the second vertical plate (461) and the lower portion of the second lead screw (462).
5. A safety shield for use in oil well operations, as defined in claim 1, wherein: one side of first backup pad (43) is the arc, the front of second backup pad (44) is the arc, first movable plate (41) are provided with two along sleeve pipe (1) bilateral symmetry, second movable plate (42) are provided with two along sleeve pipe (1) longitudinal symmetry.
6. A safety shield for use in oil well operations, as defined in claim 1, wherein: the first connecting piece (2) is provided with two along sleeve pipe (1) longitudinal symmetry, second connecting piece (3) are provided with two along sleeve pipe (1) bilateral symmetry, recess (5) are seted up at the top of first connecting plate (47), the surface of cardboard (22) and the inside looks adaptation of recess (5).
7. A safety shield for use in oil well operations, as defined in claim 3, wherein: the other end of the first screw rod (452) is rotatably connected with one side of the first connecting plate (47), one end of the first limiting rod (454) is fixedly connected with one side of the first connecting plate (47), and the bottom of the first vertical plate (451) is fixedly connected with the top of the first moving plate (41).
8. A safety shield apparatus for use in oil well operations, as defined in claim 4, wherein: the other end of the second screw rod (462) is rotatably connected with the front surface of the second connecting plate (48), one end of the second limiting rod (464) is fixedly connected with the front surface of the second connecting plate (48), and the bottom of the second vertical plate (461) is fixedly connected with the top of the second moving plate (42).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217775.6A CN112228010A (en) | 2020-11-04 | 2020-11-04 | Safety device for petroleum underground operation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011217775.6A CN112228010A (en) | 2020-11-04 | 2020-11-04 | Safety device for petroleum underground operation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112228010A true CN112228010A (en) | 2021-01-15 |
Family
ID=74121478
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011217775.6A Withdrawn CN112228010A (en) | 2020-11-04 | 2020-11-04 | Safety device for petroleum underground operation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112228010A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983338A (en) * | 2021-02-07 | 2021-06-18 | 宁夏振盐鑫盛通工贸有限公司 | Environment-friendly vacuum protection device for oil well operation |
-
2020
- 2020-11-04 CN CN202011217775.6A patent/CN112228010A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112983338A (en) * | 2021-02-07 | 2021-06-18 | 宁夏振盐鑫盛通工贸有限公司 | Environment-friendly vacuum protection device for oil well operation |
| CN112983338B (en) * | 2021-02-07 | 2022-08-02 | 宁夏振盐鑫盛通工贸有限公司 | Environment-friendly vacuum protection device for oil well operation |
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Application publication date: 20210115 |