CN105756592A - Negative pressure drilling fluid recovery processing device - Google Patents
Negative pressure drilling fluid recovery processing device Download PDFInfo
- Publication number
- CN105756592A CN105756592A CN201610283085.8A CN201610283085A CN105756592A CN 105756592 A CN105756592 A CN 105756592A CN 201610283085 A CN201610283085 A CN 201610283085A CN 105756592 A CN105756592 A CN 105756592A
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- China
- Prior art keywords
- electromagnetic valve
- drilling fluid
- processing device
- vacuum
- screen
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 59
- 238000012545 processing Methods 0.000 title claims abstract description 17
- 239000012530 fluid Substances 0.000 title abstract description 38
- 238000011084 recovery Methods 0.000 title abstract 3
- 238000007789 sealing Methods 0.000 claims abstract description 7
- 239000004744 fabric Substances 0.000 claims description 25
- 239000007788 liquid Substances 0.000 claims description 17
- 238000004064 recycling Methods 0.000 claims description 14
- 239000007787 solid Substances 0.000 abstract description 14
- 238000005265 energy consumption Methods 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 239000011435 rock Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000012216 screening Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000007711 solidification Methods 0.000 description 3
- 230000008023 solidification Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005119 centrifugation Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 230000002688 persistence Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/065—Separating solids from drilling fluids
-
- 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
- E21B21/06—Arrangements for treating drilling fluids outside the borehole
- E21B21/063—Arrangements for treating drilling fluids outside the borehole by separating components
- E21B21/067—Separating gases from drilling fluids
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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 provides a negative pressure drilling fluid recovery processing device. A screen frame is mounted on a machine base through an elastic element, wherein a screen mesh is arranged at the bottom of the screen frame; a vibration device is arranged on the screen frame; at least one vacuum hopper is fixedly mounted on the machine base; the upper end surface of the vacuum hopper is connected with the screen mesh in a sealed manner through an elastic sealing strip; the vacuum hopper is connected with an evacuation device through a pipeline. By adopting the above structure, under the conditions of same exciting force, exciting track and screen structure, such as same form, mesh number and area, as the vacuum hopper structure is arranged, the drilling fluid processing capacity is greatly higher than the existing drilling fluid vibration screen; the fluid content of processed rock wastes is greatly reduced; the loss of drilling fluid is reduced; the recovery rate of the drilling fluid is greatly increased; the production cost is reduced; the total power and the energy consumption of a drilling fluid solid control system as well as the occupied area of the drilling fluid solid control system are reduced.
Description
Technical field
The present invention relates to field of oil drilling, particularly a kind of underbalanced drilling liquid recycling and processing device.
Background technology
One of development trend for solidification control system for well drilling liguid equipment: be to improve drilling fluid vibrating sieve performance for core, simplify the existing multistage solid controlling system being made up of drilling fluid vibrating sieve, deaerator, desander, desilter, centrifuge etc., striving under general drilling condition, the two-stage solid controlling formed with vibrosieve and centrifuge replaces present multistage solid controlling system.Therefore, it is necessary to improve the performance of drilling fluid vibrating sieve, and the core improving the performance of drilling fluid vibrating sieve is refinement screen cloth.But the Deal With Drilling Fluid amount of high mesh number vibrosieve is less, particularly the Deal With Drilling Fluid amount of ultra-fine order vibrosieve is few.
Nowadays, the upper and lower non-airtight working environment being at normal atmosphere pressure of conventional screen of vibration screen for well drill liquid.In order to obtain bigger Deal With Drilling Fluid amount, generally adopt the scheme increasing exciting force.But the increase of exciting force can cause the bad stability of vibrosieve complete machine and cause drilling fluid at compass screen surface excessive spatter.Under the effect of certain exciting force, in order to improve Deal With Drilling Fluid amount, existing vibrosieve only uses different exciting track to increase Deal With Drilling Fluid amount by switching.
Summary of the invention
The technical problem to be solved is to provide a kind of underbalanced drilling liquid recycling and processing device, can solve the problem that the Deal With Drilling Fluid amount of existing high mesh number vibrosieve is less, and the problem that the Deal With Drilling Fluid amount of ultra-fine order vibrosieve is few, improve drilling fluid reclamation efficiency, further can clear up the blocking of screen cloth compass screen surface.
For solving above-mentioned technical problem, the technical solution adopted in the present invention is: a kind of underbalanced drilling liquid recycling and processing device, screen frame is arranged on support by flexible member, screen cloth it is provided with bottom screen frame, screen frame is provided with vibrating device, at least one vacuum bucket is fixedly mounted on support, and vacuum bucket upper surface is tightly connected by elastic sealing strip and screen cloth, and vacuum bucket is connected with vacuum extractor by pipeline.
In preferred scheme, described vacuum bucket is multiple, and being connected with pipeline by arm of each vacuum bucket, arm is provided with electrically-controlled valve.
In preferred scheme, the exhaust end of vacuum extractor is connected with whizzer.
In preferred scheme, in described whizzer, it is connected with divergent-cone wall bottom cylindrical tube, the bottom of divergent-cone wall is open, the pipeline of the exhaust end of vacuum extractor is tangentially connected with cylindrical tube, the top of cylindrical tube is provided with exhaustor, and the bottom of exhaustor extend in cylindrical tube body, and the bottom of exhaustor is positioned under the pipeline of the exhaust end of vacuum extractor.
In preferred scheme, vacuum bucket is connected by one end of pipeline and the first electromagnetic valve and the second electromagnetic valve；
The other end of the first electromagnetic valve is connected with the inlet end of vacuum extractor；
The other end of the second electromagnetic valve is connected with the exhaust end of vacuum extractor.
First electromagnetic valve and the second electromagnetic valve are alternately linkage structure；
When the first electromagnetic valve is positioned at connection position, then the second electromagnetic valve is positioned at cut-off position, and when the first electromagnetic valve is positioned at cut-off position, then the second electromagnetic valve is positioned at connection position.
In preferred scheme, the first described electromagnetic valve is two-bit triplet electromagnetic valve, and the cut-off position of the one end being connected with the inlet end of vacuum extractor is air straightthrough port；
The second described electromagnetic valve is 2/2-way electromagnetic valve.
Being provided with charging aperture in one end of screen frame, the other end is provided with slag-drip opening, and screen slope is arranged, the screen cloth of charging aperture one end is higher.
A kind of underbalanced drilling liquid recycling and processing device provided by the invention, by adopting above structure, has following beneficial effect:
1, at identical exciting force, exciting track, mesh structure, for instance when form and order number, area are identical, due to the vacuum bucket structure arranged, make Deal With Drilling Fluid amount be greatly increased than current drilling fluid vibrating sieve.
2, owing to using the screen cloth of high mesh number.Such as 80 order, and ultra-fine eye mesh screen, for instance 200 orders, the solids content of drilling fluid processed through assembly of the invention greatly reduces, and solid particle size significantly reduces.Therefore, the process requirement of solid control equipment after the present invention, treating capacity and load are reduced.Meanwhile, after the order number of screen cloth reaches some, it is possible to replace present multistage solid controlling system with the two-stage solid controlling system of assembly of the invention and centrifuge composition, such that it is able to save equipment purchase expense and the maintenance cost thereof of well drilling solid control system.
3, at slag-drip opening, the liquid content of the landwaste after processed is greatly reduced, and drilling fluid losing quantity reduces, and the response rate of drilling fluid is greatly improved, and reduces production cost.
4, owing to assembly of the invention and centrifuge composition two-stage solid controlling system can be used to replace the present multistage solid controlling system being made up of drilling fluid vibrating sieve, deaerator, desander, desilter, centrifuge etc..Therefore, general power and the energy consumption thereof of solidification control system for well drilling liguid are greatly reduced.It is greatly reduced the floor space of solidification control system for well drilling liguid, so that assembly of the invention can be used in the drilling platforms that space is strictly limited, such as marine drilling platform etc..
5, for the screen cloth upper and lower faces of apparatus of the present invention, it is possible not only to produce negative pressure, but also malleation can be produced.By adopting specific control mode, it is possible to clear up the blocking of screen cloth off and on, improve drilling fluid reclamation efficiency further.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the invention will be further described:
Fig. 1 is the main TV structure schematic diagram of the present invention.
Fig. 2 is the plan structure schematic diagram of the present invention.
Fig. 3 is overall structure schematic diagram of the present invention.
Fig. 4 is the left view schematic diagram of the present invention.
In figure: screen frame 1, flexible member 2, vibrating device 3, charging aperture 4, slag-drip opening 5, vacuum bucket 6, screen cloth 7, electrically-controlled valve 8, pipeline 9, vacuum extractor 10, exhaust end 101, inlet end 102, first electromagnetic valve 11, the second electromagnetic valve 12, air straightthrough port 13, whizzer 14, elastic sealing strip 15, support 16.
Detailed description of the invention
In Fig. 1 ~ 4, a kind of underbalanced drilling liquid recycling and processing device, screen frame 1 is arranged on support 16 by flexible member 2, screen cloth 7 it is provided with bottom screen frame 1, screen frame 1 is provided with vibrating device 3, at least one vacuum bucket 6 is fixedly mounted on support 16, and vacuum bucket 6 upper surface is tightly connected by elastic sealing strip 15 and screen cloth 7, and vacuum bucket 6 is connected with vacuum extractor 10 by pipeline 9.Vacuum extractor 10 is equipment conventional in prior art, for instance vacuum pump, water ring pump etc..
Elastic sealing strip 15 is bonding reliably with screen cloth 7, using part elastic sealing strip 15 as support screen frame 1 flexible member 2.Flexible member 2 can also be independent rubber bar or spring.
Preferably, vacuum bucket 6 does not vibrate together along with screen frame 1, to reduce energy consumption, reduces the abrasion of equipment.
In preferred scheme, being provided with charging aperture 4 in one end of screen frame 1, the other end is provided with slag-drip opening 5, and screen cloth 7 is in tilted layout, and the screen cloth 7 of charging aperture 4 one end is higher.Inclination angle is generally 3 ° ~ 5 °.
Screen cloth 7 can also be horizontally disposed, utilizes the vibration of vibrating device 3, makes solid granulates move to from slag-drip opening 5, and discharges from slag-drip opening 5.
During use, the drilling fluid containing landwaste enters screen cloth 7 from charging aperture 4, and under the effect of vibration, drilling fluid filters from screen cloth 7, and landwaste is staying compass screen surface, discharges from slag-drip opening 5；While vibration, vacuum bucket 6 takes out negative pressure, utilizes negative pressure auxiliary to improve filter efficiency.
In preferred scheme such as Fig. 3, described vacuum bucket 6 is multiple, and being connected with pipeline 9 by arm of each vacuum bucket 6, arm is provided with electrically-controlled valve 8.Electrically-controlled valve 8 is connected with controlling device, the liquid content according to slag-drip opening 5, and the order number of screen cloth, by the break-make of the electrically-controlled valve 8 controlling each arm in gap, to improve the suction force of single vacuum bucket 6, and improves screening efficiency in pulse controlled mode.
In preferred scheme such as Fig. 3, the exhaust end 101 of vacuum extractor 10 is connected with whizzer 14.Thus structure, makes air separate with drilling fluid.Mud after separation is re-fed into centrifugation apparatus and carries out subsequent processes.
In preferred scheme such as Fig. 3, in described whizzer 14, it is connected with divergent-cone wall bottom cylindrical tube, the bottom of divergent-cone wall is open, the pipeline of the exhaust end 101 of vacuum extractor 10 is tangentially connected with cylindrical tube, the top of cylindrical tube is provided with exhaustor, and the bottom of exhaustor extend in cylindrical tube body, and the bottom of exhaustor is positioned under the pipeline of exhaust end 101 of vacuum extractor 10.Thus structure, when the mixture of drilling fluid and air enters into cylindrical tube, drilling fluid is near the inwall of cylindrical tube under the influence of centrifugal force, and settles under gravity, and air is then discharged from exhaustor.Drilling fluid is collected finally by divergent-cone wall.
In preferred scheme such as Fig. 3, vacuum bucket 6 is connected with one end of the first electromagnetic valve 11 and the second electromagnetic valve 12 by pipeline 9；
The other end of the first electromagnetic valve 11 is connected with the inlet end 102 of vacuum extractor 10；
The other end of the second electromagnetic valve 12 is connected with the exhaust end 101 of vacuum extractor 10.
In preferred scheme, the first described electromagnetic valve 11 is two-bit triplet electromagnetic valve, and the cut-off position of the one end being connected with the inlet end 102 of vacuum extractor 10 is air straightthrough port 13；
The second described electromagnetic valve 12 is 2/2-way electromagnetic valve.
First electromagnetic valve 11 is the linkage structure alternately connected with the second electromagnetic valve 12, and namely when the first electromagnetic valve 11 is positioned at connection position, then the second electromagnetic valve 12 is positioned at cut-off position, and when the first electromagnetic valve 11 is positioned at cut-off position, then the second electromagnetic valve 12 is positioned at connection position.
Thus structure, it is simple to make vacuum extractor 10, for instance vacuum pump realizes commutation, thus utilizing the malleation of pulse and negative pressure to improve screening efficiency.
Particularly as follows: when adopting the screen cloth of high mesh number or ultra-fine eye mesh screen, first it is that the first electromagnetic valve 11 is positioned at connection position, second electromagnetic valve 12 is positioned at cut-off position, electrically-controlled valve 8 is all opened, now, vacuum extractor 10 will be pumped into negative pressure in vacuum bucket 6, to improve the screening efficiency of drilling fluid, pipeline 9 is provided with effusion meter, under the working condition of lasting feed, if effusion meter detects the flow-reduction of drilling fluid, then control device and send instruction, the first electromagnetic valve 11 is made to be positioned at cut-off position, second electromagnetic valve 12 is positioned at connection position, now vacuum extractor 10 commutates, air is made to be charged in vacuum bucket 6, vacuum extractor 10 is from air straightthrough port 13 air inlet of the first electromagnetic valve 11, positive pressure air in vacuum bucket 6, through screen cloth 7, clear up blocked sieve aperture；Then switching to the first electromagnetic valve 11 again and be positioned at connection position, the second electromagnetic valve 12 is positioned at the negative pressure mode of operation of cut-off position, thus method, by the mode of gas backwash, improves the persistence of screening efficiency further.
In use, coordinate the break-make of the control electrically-controlled valve 8 of interval, the effect of further lift gas recoil cleaning.
Adopt this structures and methods, additionally it is possible to effectively reduce the energy consumption of vibrating device 3.Avoid drilling fluid at compass screen surface excessive spatter.
The above embodiments are only the preferred technical solution of the present invention, and are not construed as the restriction for the present invention, and the embodiment in the application and the feature in embodiment be not when conflicting, it is possible to combination in any mutually.The technical scheme that protection scope of the present invention should be recorded with claim, is protection domain including the equivalents of technical characteristic in the technical scheme that claim is recorded.Namely equivalent replacement the within the scope of this is improved, also within protection scope of the present invention.
Claims (8)
1. a underbalanced drilling liquid recycling and processing device, screen frame (1) is arranged on support (16) by flexible member (2), screen frame (1) bottom is provided with screen cloth (7), screen frame (1) is provided with vibrating device (3), it is characterized in that: at least one vacuum bucket (6) is fixedly mounted on support (16), vacuum bucket (6) upper surface is tightly connected by elastic sealing strip (15) and screen cloth (7), and vacuum bucket (6) is connected with vacuum extractor (10) by pipeline (9).
2. a kind of underbalanced drilling liquid recycling and processing device according to claim 1, is characterized in that: described vacuum bucket (6) is for multiple, and being connected with pipeline (9) by arm of each vacuum bucket (6), arm is provided with electrically-controlled valve (8).
3. a kind of underbalanced drilling liquid recycling and processing device according to claim 1, is characterized in that: the exhaust end (101) of vacuum extractor (10) is connected with whizzer (14).
4. a kind of underbalanced drilling liquid recycling and processing device according to claim 3, it is characterized in that: in described whizzer (14), it is connected with divergent-cone wall bottom cylindrical tube, the bottom of divergent-cone wall is open, the pipeline of the exhaust end (101) of vacuum extractor (10) is tangentially connected with cylindrical tube, the top of cylindrical tube is provided with exhaustor, the bottom of exhaustor extend in cylindrical tube body, and the bottom of exhaustor is positioned under the pipeline of exhaust end (101) of vacuum extractor (10).
5. a kind of underbalanced drilling liquid recycling and processing device according to claim 1, is characterized in that: vacuum bucket (6) is connected by one end of pipeline (9) with the first electromagnetic valve (11) and the second electromagnetic valve (12)；
The other end of the first electromagnetic valve (11) is connected with the inlet end (102) of vacuum extractor (10)；
The other end of the second electromagnetic valve (12) is connected with the exhaust end (101) of vacuum extractor (10).
6. a kind of underbalanced drilling liquid recycling and processing device according to claim 5, is characterized in that: the first electromagnetic valve (11) and the second electromagnetic valve (12) are alternately linkage structure；
When the first electromagnetic valve (11) is positioned at connection position, then the second electromagnetic valve (12) is positioned at cut-off position, and when the first electromagnetic valve (11) is positioned at cut-off position, then the second electromagnetic valve (12) is positioned at connection position.
7. a kind of underbalanced drilling liquid recycling and processing device according to claim 5, it is characterized in that: described the first electromagnetic valve (11) is two-bit triplet electromagnetic valve, the cut-off position of the one end being connected with the inlet end (102) of vacuum extractor (10) is air straightthrough port (13)；
Described the second electromagnetic valve (12) is 2/2-way electromagnetic valve.
8. a kind of underbalanced drilling liquid recycling and processing device according to claim 1, it is characterized in that: be provided with charging aperture (4) in one end of screen frame (1), the other end is provided with slag-drip opening (5), and screen cloth (7) is in tilted layout, and the screen cloth (7) of charging aperture (4) one end is higher.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283085.8A CN105756592A (en) | 2016-05-03 | 2016-05-03 | Negative pressure drilling fluid recovery processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610283085.8A CN105756592A (en) | 2016-05-03 | 2016-05-03 | Negative pressure drilling fluid recovery processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105756592A true CN105756592A (en) | 2016-07-13 |
Family
ID=56322467
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610283085.8A Pending CN105756592A (en) | 2016-05-03 | 2016-05-03 | Negative pressure drilling fluid recovery processing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105756592A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194084A (en) * | 2016-09-27 | 2016-12-07 | 西南石油大学 | Pulsed negative pressure vibratory equipment |
| CN113550705A (en) * | 2021-09-23 | 2021-10-26 | 西南石油大学 | Pulse negative pressure well drilling vibrating screen |
| CN114453240A (en) * | 2022-02-10 | 2022-05-10 | 成都西部石油装备股份有限公司 | Bidirectional gas-assisted vibrating screen and screen cleaning method |
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|---|---|---|---|---|
| US3677411A (en) * | 1970-12-08 | 1972-07-18 | Ishigaki Mech Ind | Horizontally travelling-type vacuum filter |
| CN102657966A (en) * | 2012-05-23 | 2012-09-12 | 宋泳 | Quick suction filtration device |
| CN202569723U (en) * | 2012-05-23 | 2012-12-05 | 宋泳 | Fast suction filtration device |
| CN202810728U (en) * | 2012-04-27 | 2013-03-20 | 青岛泰众能源技术有限公司 | Rock debris negative pressure driving separating device |
| CN204544488U (en) * | 2015-04-22 | 2015-08-12 | 青岛润扬环境科技有限公司 | A kind of hydrocyclone |
| CN105107716A (en) * | 2008-10-29 | 2015-12-02 | Fp马拉诺尼公司 | Vacuum manifold |
| CN105127093A (en) * | 2015-09-25 | 2015-12-09 | 西南石油大学 | Negative pressure drilling liquid vibration sieve |
| CN205532410U (en) * | 2016-05-03 | 2016-08-31 | 长江大学 | Underbalanced drilling liquid recovery processing device |
-
2016
- 2016-05-03 CN CN201610283085.8A patent/CN105756592A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3677411A (en) * | 1970-12-08 | 1972-07-18 | Ishigaki Mech Ind | Horizontally travelling-type vacuum filter |
| CN105107716A (en) * | 2008-10-29 | 2015-12-02 | Fp马拉诺尼公司 | Vacuum manifold |
| CN202810728U (en) * | 2012-04-27 | 2013-03-20 | 青岛泰众能源技术有限公司 | Rock debris negative pressure driving separating device |
| CN102657966A (en) * | 2012-05-23 | 2012-09-12 | 宋泳 | Quick suction filtration device |
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| CN204544488U (en) * | 2015-04-22 | 2015-08-12 | 青岛润扬环境科技有限公司 | A kind of hydrocyclone |
| CN105127093A (en) * | 2015-09-25 | 2015-12-09 | 西南石油大学 | Negative pressure drilling liquid vibration sieve |
| CN205532410U (en) * | 2016-05-03 | 2016-08-31 | 长江大学 | Underbalanced drilling liquid recovery processing device |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106194084A (en) * | 2016-09-27 | 2016-12-07 | 西南石油大学 | Pulsed negative pressure vibratory equipment |
| CN106194084B (en) * | 2016-09-27 | 2019-12-27 | 西南石油大学 | Pulsating negative pressure vibration equipment |
| CN113550705A (en) * | 2021-09-23 | 2021-10-26 | 西南石油大学 | Pulse negative pressure well drilling vibrating screen |
| CN113550705B (en) * | 2021-09-23 | 2021-12-28 | 西南石油大学 | Pulse negative pressure well drilling vibrating screen |
| CN114453240A (en) * | 2022-02-10 | 2022-05-10 | 成都西部石油装备股份有限公司 | Bidirectional gas-assisted vibrating screen and screen cleaning method |
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Application publication date: 20160713 |
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