CN105909192B - For sieving the device of oil base drilling fluid solid-liquid two-phase - Google Patents
For sieving the device of oil base drilling fluid solid-liquid two-phase Download PDFInfo
- Publication number
- CN105909192B CN105909192B CN201610415298.1A CN201610415298A CN105909192B CN 105909192 B CN105909192 B CN 105909192B CN 201610415298 A CN201610415298 A CN 201610415298A CN 105909192 B CN105909192 B CN 105909192B
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- Prior art keywords
- drilling fluid
- moving stop
- fixed baffle
- phase
- sliding block
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Classifications
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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
Abstract
The invention discloses the devices for sieving oil base drilling fluid solid-liquid two-phase, including screen frame, sieve, guide rail and sliding block, screen frame is equipped with several fixed baffles, fixed baffle is equipped with the spring perpendicular to fixed baffle on the side towards sieve entrance, spring is connected with cushion, it further include moving stop, moving stop is parallel to fixed baffle, moving stop is located at the shaft that the setting of the part on screen frame is parallel to screen frame normal direction, the shaft is provided with screw thread on the side of bottom end, shaft bottom end is inserted into the screw hole being arranged on screen frame through moving stop, the side of moving stop and cushion contact.The present apparatus separates the liquid phase in drilling fluid further with solid phase; strengthen screening effect; avoid the liquid phase in screening process in drilling fluid also have not enough time to separate with solid phase just with solid phase movement to screened outlet at; cause the loss of recyclable liquid phase; the use cost for not only reducing drilling fluid, also protects environment.
Description
Technical field
The present invention relates to drilling fluid reclamation fields, and in particular to for sieving the device of oil base drilling fluid solid-liquid two-phase.
Background technique
Drilling fluid is the general name of the various circulation of fluids used in drilling process, and drilling fluid is also referred to as drilling mud.?
In drilling process, drilling fluid can effectively cool down and lubricate drill bit, additionally it is possible to which balancing layer pressure avoids that blowout and well occurs
It gushes, in addition to this, drilling fluid can also transmit power and coring sampling.According to decentralized medium difference, drilling fluid is broadly divided into water
The gentle base drilling fluid three categories of base drilling fluid, oil base drilling fluid.
In drilling process, drilling fluid enters to bottom by drilling rod, useless with what is generated in drilling well after completing its effect
Slag is discharged together, since drilling fluid is not only at high price but also meeting welding, so should recycle to drilling fluid, solid controlling
System is exactly for recycling drilling fluid.Solid controlling system is also called drilling-fluid circulation system and drilling fluid cleaning system.Solid controlling system
System mainly includes the solid control equipments such as drilling fluid vibrating sieve, vacuum degasser, desander, desilter, horizontal spiral centrifuge.These
A series of solid control equipment sieve different just as sizes, function realizes the purification and recycling to drilling fluid by layering.
Drilling fluid vibrating sieve is the level-one solid control equipment for circulation of drilling fluid, purification system, has oscillation intensity height, sieve
The features such as facet product is big.Drilling fluid vibrating sieve is mainly used for removing biggish bore meal particles in drilling fluid, safeguards the property of drilling fluid
It can be equipment most important in solid controlling system with the treatment effect and service life of the solid control equipment after guaranteeing.
The screening process of drilling fluid vibrating sieve include liquid phase cross sieve into screen box and solid phase enter on sieve from sieve
Mouth is moved to the outlet of sieve.When drilling fluid is located at the sieve being arranged on screen box, solid-liquid two-phase begins to separation.Solid-liquid two
It will not mutually be immediately disconnected, the screening mechanism of traditional drilling fluid vibrating sieve is likely to occur solid phase particles and liquid phase also in screening process
Do not have enough time separate just have left sieve, cause the drilling fluid liquid phase that can be recycled lose, not only pollute environment also add brill
Well cost.
Summary of the invention
The shortcomings that the technical problem to be solved by the present invention is to for traditional drilling fluid vibrating sieve screening mechanism, it is therefore intended that
Device for sieving oil base drilling fluid solid-liquid two-phase is provided, traditional drilling fluid vibrating sieve is solved and consolidates in screening process
Phase particle also does not have enough time separating just having left sieve with liquid phase, causes the problem of liquid phase loss can be recycled in drilling fluid.
The present invention is achieved through the following technical solutions：For sieving the device of oil base drilling fluid solid-liquid two-phase, including sieve
Frame is provided with sieve in screen frame, guide rail is provided on screen frame, guide rail extends to the outlet of drilling fluid from drilling fluid inlet
Locate, several sliding blocks is provided on guide rail, one end of close drilling fluid outlet is equipped with fixed baffle on sliding block, and the other end is equipped with
The longer sides of the contact surface of moving stop, fixed baffle and sliding block are parallel to the method for sliding block perpendicular to sliding block, the height of fixed baffle
Line direction, fixed baffle are parallel to moving stop, and spring is provided between fixed baffle and moving stop, and the spring one end hangs down
It is directly fixed on fixed baffle, the other end is connected with cushion, and the cushion is contacted with moving stop, sets at the top of moving stop
It is equipped with the shaft for being parallel to sliding block normal direction, is provided with screw thread on the side of the shaft bottom end, shaft bottom end is run through
Moving stop is inserted into the screw hole to match with the screw thread being arranged on sliding block.In the prior art, drilling fluid vibrating sieve
Screen box and the equal slant setting of sieve, the height of drilling fluid inlet are greater than the height in exit, when drilling fluid is vibrated from drilling fluid
When being sieved into mouth and entering on sieve, the solid phase in drilling fluid is located above sieve, and the outlet of sieve is moved to from the inlet of sieve
Locate, the liquid phase in drilling fluid is gradually separated with solid phase, and wear during solid phase is mobile to screened outlet by effect of vibration
It crosses sieve to enter in the screen box below sieve, finally collect the liquid phase of drilling fluid in screen box exit and is transferred to next stage
It is further separated in solid control equipment.But the screening mechanism of traditional drilling fluid vibrating sieve uniquely relies on sieve progress
Screening, sieve are arranged in screen frame, and screen frame is the edge at the top of screen box, partially stick in screening process and have drilling fluid liquid
The solid particle of phase just has moved to exit when not opening with liquid phase separation also and is collected, and causes to be recycled in drilling fluid
The liquid phase loss used.Due to, not only comprising decentralized medium such as water, further comprising the chemical substances such as inorganic agent in drilling fluid liquid phase,
It is not only not easy to processing, also pollutes the environment, also, increase the use cost of drilling fluid.To solve the above-mentioned problems, this hair
The bright device proposed for sieving oil base drilling fluid solid-liquid two-phase.The mechanism is provided with guide rail on screen frame, and guide rail is located at
On two sides that screen frame is parallel to each other, guide rail extends to close from the position close to drilling fluid vibrating sieve feed inlet along screen frame
The position of drilling fluid vibrating sieve discharge port.Sliding block is provided on guide rail, sliding block may be locked in any position on guide rail, and straight line is led
The lock-in techniques of rail top shoe are the prior art, and the companies such as MISUMI, NBK can produce lock in guide rail any position and slide
The linear guide of block.Moving stop and fixed baffle are provided on sliding block, moving stop is parallel to fixed baffle and is located at sliding block
Upper one end close to drilling fluid entrance, drilling fluid entrance, that is, drilling fluid vibrating sieve feed inlet.Moving stop and fixed baffle
A part is respectively positioned on sliding block, and another part is located on sieve, wherein fixed baffle is fixed on sliding block, at the top of moving stop
It is provided with shaft, screw thread is provided on the side of shaft bottom end, the activity of shaft bottom end is through moving stop and is inserted into cunning
In the screw hole to match with the screw thread in shaft being arranged on block, moving stop can surround shaft System of Rotating about Fixed Axis, be connected by screw thread
It connects, the components such as shaft, moving stop can be replaced after prolonged use.It is provided between moving stop and fixed baffle
Spring, spring are vertically mounted on the side of fixed baffle, are equipped with cushion on one end that spring is contacted with moving stop.Work as brill
When well liquid is flowed on sieve from feed inlet, drilling fluid impinges upon on moving stop while being vibrated effect, drilling fluid
Impulse force is generated to moving stop, moving stop generates reaction force to drilling fluid, after reaction force acts are on drilling fluid, due to
The distance of the difference of the rebound dynamics of liquid phase and solid phase in drilling fluid, solid phase rebound is remote compared with the distance that liquid phase rebounds, thus into one
Solid phase and liquid phase in step separation drilling fluid, avoid liquid phase from also having not enough time to separate with solid phase just as solid phase movement to sieve goes out
Mouthful, cause recyclable drilling fluid liquid phase to lose；In addition, a part of liquid phase can be also adhered on moving stop, as vibration is made
With slowly entering in screen box from sliding on moving stop on sieve and eventually by sieve pore, the Partial Liquid Phase not only realize with
The separation of solid phase, moreover it is possible to play the role of mitigating shock of the drilling fluid to moving stop, play protection moving stop.Moving stop
After the shock by drilling fluid, around shaft System of Rotating about Fixed Axis can be done, still, one end far from shaft can be by rotary course
It to the supporting role of spring, integrates, moving stop, can be towards the mobile a distance of fixed baffle, later after being hit
By spring support and rebound, a part of impulse force not only can be shed, impulse force is transferred on cushion and spring, kept away
Exempt from moving stop to damage in frequent hit, while moving stop is also increased to the rebound dynamics of drilling fluid by spring, into
One step separates the liquid phase in drilling fluid with solid phase, in addition, moving stop avoids part drilling fluid heap by turning effort
Product is in the side of moving stop.In use, if moving stop is excessive and intensive, the movement speed of solid phase particles can be big
Width reduces, and solid phase particles is caused to accumulate on sieve, is not only easy blocking and damage sieve, also reduces drilling fluid vibrating sieve
Treating capacity；When gap is excessive between baffle and negligible amounts, the effect that moving stop plays is limited, and expected solid-liquid two is not achieved
The separative efficiency of phase secondary separation effect, moving stop reduces.To solve the above-mentioned problems, the present apparatus passes through setting linear guide
With the sliding block to match, operator is adjusted according to field conditions such as the viscosity, inlet amount, charging rate of drilling fluid
Position of the moving stop on guide rail, changes the distance between each moving stop, moreover it is possible to the number of moving stop needed for adjusting, when
When needing to increase or decrease moving stop number, it is only necessary to install or unload sliding block, operator can according to demand more
Add and neatly sieved with solid-liquid two-phase of the moving stop to drilling fluid, further increases the separative efficiency of moving stop.
The present apparatus separates the liquid phase in drilling fluid further with solid phase, strengthens screening effect, avoids in screening process, especially
When being that the influx of drilling fluid increases suddenly, the liquid phase in drilling fluid also has not enough time to separate with solid phase just as solid phase is moved
It moves to screened outlet, causes the loss of recyclable liquid phase, not only reduce the use cost of drilling fluid, also protect environment.
Further, the length of moving stop is 1.5 to 2 times of fixed baffle length.In the present apparatus, moving stop is played
The effect of solid phase and liquid phase in drilling fluid is further separated, installation spring plays resilient support to moving stop on fixed baffle
Effect.It is found by practice, if the length of moving stop is less than 1.5 times of fixed baffle length, moving stop and drilling fluid
Contact area it is too small, inferior separating effect, part drilling fluid can also be deposited in the side of fixed baffle；If the length of moving stop
Degree is greater than 2 times of fixed baffle length, since moving stop is located proximate to shaft by spring supporting effect, so that mobile gear
The rotational steps of plate are excessive, can not return to original position in time after shedding part impulse force and stop drilling fluid, blocking effect is poor.
Further, moving stop surface is coated with synthetic enamel.Synthetic enamel is mainly used for the protection of metal surface, due to
Moving stop can be frequently by the shock in drilling fluid, and the solid phase of drilling fluid can generate scraping to its surface, reduce moving stop
Service life, synthetic enamel can play a protective role to the surface of moving stop, prolong its service life.In practice, mainly make
With C53-31 antirust enamel paint, which has good adhesive force and flexibility, can play to moving stop surface good
Protecting effect.
Further, spring is located at one end on sieve close to fixed baffle.Spring, which is arranged, is located at sieve in fixed baffle
On one end can be avoided the rotation angle of moving stop and spend greatly, cause blocking effect to reduce.
Further, cushion is made of nitrile rubber.Nitrile rubber not only has buffer function, can shed moving stop
On part impulse force, also there is certain intensity and frictional behaviour, so that spring will not be by during supporting moving stop
Relative movement occurs between moving stop and support effect is caused to be deteriorated, makes moving stop that can not be restored to original position.
Compared with prior art, the present invention having the following advantages and benefits：
1, the present invention is on the basis of the effect of vibration of traditional screen of vibration screen for well drill liquid, by increasing moving stop, so that
Liquid phase in drilling fluid is further separated with solid phase, strengthen screening effect, avoid in screening process, especially drilling fluid
When influx increases suddenly, the liquid phase in drilling fluid also has not enough time to separate with solid phase just as solid phase movement to sieve goes out
At mouthful, the loss of recyclable liquid phase is caused, the use cost of drilling fluid is not only reduced, also protects environment；
2, the present invention is provided with fixed baffle, spring and cushion, so that moving stop after being hit, is understood towards fixation
Baffle moves a distance, is rebounded later by the support of spring, not only can shed a part of impulse force, and impulse force is turned
It moves on cushion and spring, avoids moving stop from damaging in frequent hit, while also increasing moving stop by spring
To the rebound dynamics of drilling fluid, further such that the liquid phase in drilling fluid is separated with solid phase, in addition, moving stop is made by rotation
The side for being deposited in moving stop with part drilling fluid is avoided；
3, the present invention allows operator according to the viscous of drilling fluid by setting linear guide and the sliding block to match
The field conditions such as degree, inlet amount, charging rate adjust position and number of the moving stop on guide rail, and operator being capable of basis
Demand is sieved with solid-liquid two-phase of the moving stop to drilling fluid more flexiblely, further increases the separation of moving stop
Efficiency；
4, the present invention is had found by practical application when the length of moving stop is 1.5 to 2 times of fixed baffle length,
The screening effect of moving stop is best, if the length of moving stop is less than 1.5 times of fixed baffle length, moving stop and brill
The contact area of well liquid is too small, inferior separating effect, and part drilling fluid can also be deposited in the side of fixed baffle；If moving stop
Length be greater than 2 times of fixed baffle length, since moving stop is located proximate to shaft by spring supporting effect, so that shifting
The rotational steps of dynamic baffle are excessive, can not return to original position in time after shedding part impulse force and stop drilling fluid, blocking effect
Difference；
5, the present invention is coated with C53-31 antirust enamel paint on moving stop surface, since moving stop can be frequently by drilling fluid
In shock, the solid phase of drilling fluid can generate scraping to its surface, reduce the service life of moving stop, C53-31 antirust enamel paint can
It plays a protective role, prolongs its service life to the surface of moving stop.
Detailed description of the invention
Attached drawing described herein is used to provide to further understand the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is schematic structural view of the invention.
Label and corresponding parts title in attached drawing：
1- screen frame, 2- sieve, 3- shaft, 4- fixed baffle, 5- cushion, 6- spring, 7- moving stop, 8- sliding block,
9- guide rail.
Specific embodiment
To make the objectives, technical solutions, and advantages of the present invention clearer, below with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation for explaining only the invention, are not made
For limitation of the invention.
Embodiment
As shown in Figure 1, the present invention is the device for sieving oil base drilling fluid solid-liquid two-phase, including screen frame 1, screen frame
It is provided with sieve 2 in 1, guide rail 9 is provided on screen frame 1, guide rail 9 extends to the exit of drilling fluid from drilling fluid inlet,
Several sliding blocks 8 are provided on guide rail 9, one end of close drilling fluid outlet is equipped with fixed baffle 4, other end installation on sliding block 8
There is a moving stop 7, for the longer sides of the fixed baffle 4 and the contact surface of sliding block 8 perpendicular to sliding block 8, the height of fixed baffle 4 is parallel
In the normal direction of sliding block 8, fixed baffle 4 is parallel to moving stop 7, is provided with spring between fixed baffle 4 and moving stop 7
6,6 one end of spring is vertically fixed on fixed baffle 4, and the other end is connected with cushion 5, and cushion 5 is contacted with moving stop 7,
Setting is parallel to the shaft 3 of 8 normal direction of sliding block at the top of moving stop 7, is provided on the side of 3 bottom end of shaft
Screw thread, 3 bottom end of shaft are inserted into the screw hole to match with screw thread being arranged on sliding block 8 through moving stop 7.Moving stop 7
Length be 1.5 to 2 times of 4 length of fixed baffle.7 surface of moving stop is coated with synthetic enamel.Spring 6 is close to fixed baffle 4
One end on sieve 2.Cushion 5 is made of nitrile rubber.When drilling fluid from 2 entrance of sieve flow into when, drilling fluid by
It is impinged upon on moving stop 7 while to effect of vibration, moving stop 7 further separates brill by the reaction force to drilling fluid
Solid phase and liquid phase in well liquid avoid liquid phase from also having not enough time to separate with solid phase just to cause with solid phase movement to screened outlet
Recyclable drilling fluid liquid phase loss；Moving stop 7, can be towards the mobile a distance of fixed baffle, Zhi Houshou after being hit
To spring 6 support and rebound, a part of impulse force not only can be shed, impulse force is transferred on cushion 5 and spring 6,
It avoids moving stop 7 from damaging in frequent hit, while moving stop 7 is also increased to the bounce of drilling fluid by spring 6
Degree, further such that the liquid phase in drilling fluid is separated with solid phase, moving stop 7 also avoids part drilling fluid by turning effort
It is deposited in the side of moving stop 7.In addition, operator can also be by increasing or decreasing the quantity of sliding block 8, adjusting sliding block 8
Position on the rail 9 adjusts according to field conditions such as the viscosity of drilling fluid, inlet amount, charging rates more flexiblely and moves
The position of baffle 7 on the rail 9 changes the distance between each moving stop 7 and number, further increases point of moving stop 7
From efficiency.The present apparatus separates the liquid phase in drilling fluid further with solid phase, strengthens screening effect, avoids in screening process
In, when the influx of especially drilling fluid increases suddenly, the liquid phase in drilling fluid also have not enough time to separate with solid phase just with
Solid phase movement to 2 exit of sieve, cause the loss of recyclable liquid phase, not only reduce the use cost of drilling fluid, also protect
Environment is protected.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not intended to limit the present invention the foregoing is merely a specific embodiment of the invention
Protection scope, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (3)
1. the device for sieving oil base drilling fluid solid-liquid two-phase, including screen frame (1), the screen frame (1) is interior to be provided with sieve
Net (2), which is characterized in that be provided on screen frame (1) guide rail (9), the guide rail (9) extends to drilling well from drilling fluid inlet
The exit of liquid is provided with several sliding blocks (8) on guide rail (9), and one end on the sliding block (8) close to drilling fluid outlet is equipped with
Fixed baffle (4), one end on sliding block (8) far from drilling fluid outlet are equipped with moving stop (7), the fixed baffle (4) with
The longer sides of the contact surface of sliding block (8) are parallel to the normal direction of sliding block (8) perpendicular to sliding block (8), the height of fixed baffle (4),
Fixed baffle (4) is parallel to moving stop (7), and spring (6), the bullet are provided between fixed baffle (4) and moving stop (7)
Spring (6) one end is vertically fixed on fixed baffle (4), and the other end of spring (6) is connected with cushion (5), the cushion (5)
It being contacted with moving stop (7), setting is parallel to the shaft (3) of sliding block (8) normal direction at the top of moving stop (7), and described turn
Screw thread is provided on the side of axis (3), the screw thread runs through moving stop (7) close to the bottom end of shaft (3), shaft (3) bottom end
It is inserted into the screw hole to match with the screw thread being arranged on sliding block (8)；The spring (6) is located at close to fixed baffle (4)
One end on sieve (2)；The cushion (5) is made of nitrile rubber.
2. according to claim 1 for sieving the device of oil base drilling fluid solid-liquid two-phase, which is characterized in that the movement
The length of baffle (7) is 1.5 to 2 times of fixed baffle (4) length.
3. according to claim 1 for sieving the device of oil base drilling fluid solid-liquid two-phase, which is characterized in that the movement
Baffle (7) surface is coated with synthetic enamel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415298.1A CN105909192B (en) | 2016-06-15 | 2016-06-15 | For sieving the device of oil base drilling fluid solid-liquid two-phase |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610415298.1A CN105909192B (en) | 2016-06-15 | 2016-06-15 | For sieving the device of oil base drilling fluid solid-liquid two-phase |
Publications (2)
| Publication Number | Publication Date |
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| CN105909192A CN105909192A (en) | 2016-08-31 |
| CN105909192B true CN105909192B (en) | 2018-11-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610415298.1A Active CN105909192B (en) | 2016-06-15 | 2016-06-15 | For sieving the device of oil base drilling fluid solid-liquid two-phase |
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| Country | Link |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108240187B (en) * | 2018-01-26 | 2020-07-17 | 陈燕霞 | Rack-meshed oscillating drilling fluid recycling device for oil exploitation |
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|---|---|---|---|---|
| GB2085745B (en) * | 1980-10-20 | 1984-03-28 | Thule United Ltd | Vibratory screening apparatus |
| CN1596158A (en) * | 2001-11-29 | 2005-03-16 | 宾德股份公司 | Sieve device |
| CN202336424U (en) * | 2011-10-28 | 2012-07-18 | 九鼎环保纸业股份有限公司 | Papermaking fiber reselection vibrating screen |
| CN103182378A (en) * | 2013-03-12 | 2013-07-03 | 河南威猛振动设备股份有限公司 | Auxiliary sieving device for vibrating screen |
| CN104001665A (en) * | 2014-06-11 | 2014-08-27 | 长江大学 | Band type linear vibrating screen |
| CN204194125U (en) * | 2014-10-13 | 2015-03-11 | 赣州正康生物科技有限公司 | A kind of feed factory multifunction vibration sieves |
| CN204933963U (en) * | 2015-08-03 | 2016-01-06 | 砀山县圣轩建材有限公司 | A kind of fragment of brick material screening device |
| CN205743784U (en) * | 2016-06-15 | 2016-11-30 | 成都来宝石油设备有限公司 | A kind of for sieving the mechanism that water-based drilling solid and liquid is biphase |
-
2016
- 2016-06-15 CN CN201610415298.1A patent/CN105909192B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2085745B (en) * | 1980-10-20 | 1984-03-28 | Thule United Ltd | Vibratory screening apparatus |
| CN1596158A (en) * | 2001-11-29 | 2005-03-16 | 宾德股份公司 | Sieve device |
| CN202336424U (en) * | 2011-10-28 | 2012-07-18 | 九鼎环保纸业股份有限公司 | Papermaking fiber reselection vibrating screen |
| CN103182378A (en) * | 2013-03-12 | 2013-07-03 | 河南威猛振动设备股份有限公司 | Auxiliary sieving device for vibrating screen |
| CN104001665A (en) * | 2014-06-11 | 2014-08-27 | 长江大学 | Band type linear vibrating screen |
| CN204194125U (en) * | 2014-10-13 | 2015-03-11 | 赣州正康生物科技有限公司 | A kind of feed factory multifunction vibration sieves |
| CN204933963U (en) * | 2015-08-03 | 2016-01-06 | 砀山县圣轩建材有限公司 | A kind of fragment of brick material screening device |
| CN205743784U (en) * | 2016-06-15 | 2016-11-30 | 成都来宝石油设备有限公司 | A kind of for sieving the mechanism that water-based drilling solid and liquid is biphase |
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| Publication number | Publication date |
|---|---|
| CN105909192A (en) | 2016-08-31 |
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Effective date of registration: 20181129 Address after: 610000 No. 160 Huang He road, East Industrial Zone, Xindu District, Chengdu, Sichuan Patentee after: Chengdu Sealand Energy Technology Ltd. Address before: 610000 125 River Road, Sanhe street, Xindu District, Chengdu, Sichuan Patentee before: Chengdu Lai Bao oil equipment Co., Ltd |