CN107939388A - Drilling mud shaking sample collector - Google Patents
Drilling mud shaking sample collector Download PDFInfo
- Publication number
- CN107939388A CN107939388A CN201711236430.3A CN201711236430A CN107939388A CN 107939388 A CN107939388 A CN 107939388A CN 201711236430 A CN201711236430 A CN 201711236430A CN 107939388 A CN107939388 A CN 107939388A
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- Prior art keywords
- cylinder
- axial
- wall
- opening
- face
- 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.)
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- 238000005553 drilling Methods 0.000 title claims abstract description 16
- 230000007704 transition Effects 0.000 claims abstract description 7
- 230000006978 adaptation Effects 0.000 claims description 2
- 238000007789 sealing Methods 0.000 claims description 2
- 230000005611 electricity Effects 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 7
- 238000011109 contamination Methods 0.000 abstract description 5
- 238000007599 discharging Methods 0.000 abstract description 4
- 238000005070 sampling Methods 0.000 abstract description 4
- 238000003780 insertion Methods 0.000 description 3
- 230000037431 insertion Effects 0.000 description 3
- 239000002390 adhesive tape Substances 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 230000001595 contractor effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000003670 easy-to-clean Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 238000009825 accumulation Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B49/00—Testing the nature of borehole walls; Formation testing; Methods or apparatus for obtaining samples of soil or well fluids, specially adapted to earth drilling or wells
- E21B49/08—Obtaining fluid samples or testing fluids, in boreholes or wells
- E21B49/081—Obtaining fluid samples or testing fluids, in boreholes or wells with down-hole means for trapping a fluid sample
- E21B49/082—Wire-line fluid samplers
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)
- Sampling And Sample Adjustment (AREA)
- Investigation Of Foundation Soil And Reinforcement Of Foundation Soil By Compacting Or Drainage (AREA)
Abstract
The invention discloses drilling mud shaking sample collector, the second cylinder is set in the first cylinder；The first cylinder axial direction bottom is open, outside the open end on be equipped with limiting plate, installing plate upper face is equipped with motor, and motor is connected with shaft, and the output terminal of shaft is connected with the second cylinder axial direction bottom outer wall, and installing plate is bolted on limiting plate；First cylinder axial direction top inner wall is equipped with limiting slot；The axial top of second cylinder is open, and the open end that installing stopper transition coordinates plug to be located at the second cylinder is fixed, and the top end face of installing stopper is equipped with the gag lever post being adapted to limiting slot；The bottom face of installing stopper is equipped with telescopic rod push rod, and the side wall of the first cylinder is equipped with the first opening, and the side wall of the second cylinder is equipped with the second opening.Beneficial to automatic sampling and automatic discharging operation, and good seal is realized, effectively prevent using mud by upper strata mud contamination.
Description
Technical field
The present invention relates to a kind of drilling assistance, and in particular to drilling mud shaking sample collector.
Background technology
, it is necessary to mud off during drill bit is crept into soil layer, to keep the stability of hole wall.And due to different depths
The stratum physico mechanical characteristic of degree is different, so, stratum for different depth, it is necessary to select different performance index such as proportion,
The mud of viscosity, sand factor, can just give full play to the retaining wall effect of mud.Therefore, during actual borehole mud off, need
The mud of different depth is obtained, its property indices is detected, could judge the mud used in drilling process
Whether performance indicator is consistent with design.Existing mud sampler needs to pull rope to sample manually more, inconvenient；And
Sealing effect is poor after sampling, and solution influences testing result by upper strata mud contamination；Device is mostly integral type, is not easy to clear
Wash and replace component.
The content of the invention
The technical problems to be solved by the invention are that existing mud sampler needs to pull rope to sample manually more, behaviour
Make inconvenience, and it is an object of the present invention to provide drilling mud shaking sample collector, sampling and automatic discharging operate automatically beneficial to realization, and close
Envelope is good, effectively prevents using mud by upper strata mud contamination.
The present invention is achieved through the following technical solutions：
Drilling mud shaking sample collector, including the first cylinder and the second cylinder, second cylinder are set in first
In cylinder；The first cylinder axial direction bottom is open, and outside the open end on be equipped with limiting plate, further include installing plate, institute
The upper face centre for stating installing plate is equipped with motor, and the output terminal of the motor is connected with shaft, the output terminal of shaft and
Two cylinder axial direction bottom outer wall connections, and shaft rotates with motor, drives the second barrel body rotation, the installing plate is consolidated by bolt
It is scheduled on limiting plate；First cylinder axial direction top inner wall is equipped with limiting slot；The axial top of second cylinder is open,
Installing stopper is further included, the open end that the installing stopper transition coordinates plug to be located at the second cylinder is fixed, set on the top end face of installing stopper
There is the gag lever post being adapted to the limiting slot；The bottom face of installing stopper is equipped with telescopic rod push rod, the axle center of the telescopic putter
Line is overlapped with the axial line of the second cylinder, and axial one end of telescopic putter is fixed on the bottom face of installing stopper, the other end is equipped with
Piston；The side wall of first cylinder is equipped with the first opening, and the side wall of the second cylinder is equipped with the second opening, and described first opens
Mouth and the second opening are in same level；Axial top is equipped with rope outside first cylinder；The telescopic putter uses liquid
Telescopic rod is pressed, the telescopic putter and motor are by controlling electric line to be connected with the controlling switch on ground.
Operation principle of the present invention is：First cylinder and the second cylinder are put into the mud of set depth by rope first
In；Then motor is controlled to rotate by starting ground controlling switch, motor drives shaft to rotate, and the second rotating cylinder is rotated with shaft,
Until when the second opening on the second cylinder is overlapped with the first aperture position on the first cylinder, stop motor and rotate, at this time can
There is mud to enter through the first opening and the second opening in the second cylinder；Then telescopic putter is controlled by starting ground controlling switch
Contractive action, piston are shunk with telescopic putter, and beneficial to environment under low pressure is formed in the second cylinder, more mud are inhaled into second
In cylinder, wait after collecting, be again started up motor rotation, until the position of the second opening and the first opening is staggered, second opens
Mouth is stopped by the first cylinder lateral wall to be closed, and during by rope, cylinder is pulled up, is prevented by upper strata mud contamination.Control
Electric line can be adhered fixed in lifting by sealed plastic or adhesive tape parcel.In addition, the first cylinder and the second cylinder are used
Removably connects, and during connection, the axial top of the second cylinder is inserted into by the axial bottom open-mouth of the second cylinder, makes limit
It is fixed in the free end insertion limiting slot of position bar, then installing plate is bolted on limiting plate, simple in structure, operation
It is convenient, easy to cleaning operation, prevent from accumulating excessive mud between the first cylinder inboard wall and the second cylinder body outer wall, influence normally to turn
Dynamic operation.Finally, telescopic putter and piston are detachably connected installed in the axial top of the second cylinder entirely through installing stopper
At open end, easy to clean, disassembling operations stretch drawbar and piston, prevent from accumulating shadow between piston outer wall and the second cylinder inboard wall
Piston is rung to promote.
Preferably, the installing stopper includes column cock body and baffle, the axial top of the column cock body and the axis of baffle
It is fixedly connected at the heart；The axial bottom outer wall of the column cock body is connected with the axial top opening inner thread of the second cylinder,
The outside diameter of the baffle is equal to the open end outside diameter of the second cylinder.
It is simple in construction, easy to disassemble and assemble by installing stopper entirely through being threadably received in the second cylinder open end.
Preferably, for the baffle towards rubber seal ring is convexly equipped with column cock body end plate face, second cylinder is open
End ring is equipped with coordinates the groove being adapted to the rubber seal ring transition.
It is adapted to using rubber seal ring and groove, realizes the sealed connection of installing stopper and the second cylinder open end, guarantee makes
During, environment under low pressure is suitably formed in the second cylinder and is pumped into mud.
Preferably, axial one end of the gag lever post be embedded in the limiting slot, the axial other end by universal joint with
Second cylinder axial direction top outer wall connection.
Gag lever post and the second cylinder axial direction top are connected by universal joint, rubbed beneficial to gag lever post is reduced with limiting slot rotation
Resistance is wiped, improves work efficiency.
Preferably, first opening is on the close axial bottom side wall of the first cylinder.
After sampling, telescopic putter can be extended by starting telescopic putter, driven in the second cylinder of piston press
Mud, is extruded removings through the second opening and the first opening successively by mud, realizes automatic discharging, and first is open the second cylinder again
Position on side wall is lower, is more beneficial to by fashion of extrusion all discharge the mud in the second cylinder, reduces manual discharging behaviour
Make.
Preferably, axial top is additionally provided with least two auxiliary ropes outside first cylinder, the rope and the
The circle centre position connection of the axial top end face of one cylinder, the axial top end face outer wall of the auxiliary rope and the first cylinder connect
Connect.
Preferably, axial top is additionally provided with least two auxiliary ropes outside first cylinder, the rope and the
The circle centre position connection of the axial top end face of one cylinder, the axial top end face outer wall of the auxiliary rope and the first cylinder connect
Connect.
Compared with prior art, the present invention have the following advantages and advantages：
Drilling mud shaking sample collector of the present invention, operation principle of the present invention are：First by rope by first
Body and the second cylinder are put into the mud of set depth；Then motor is controlled to rotate by starting ground controlling switch, motor band
Turn axis rotates, and the second rotating cylinder is rotated with shaft, until the second opening on the second cylinder and the first opening on the first cylinder
When position overlaps, stop motor and rotate, have mud at this time and enter through the first opening and the second opening in the second cylinder；Then lead to
Startup ground controlling switch control telescopic putter contractive action is crossed, piston is shunk with telescopic putter, beneficial to the shape in the second cylinder
Into environment under low pressure, more mud are inhaled into the second cylinder, are waited after collecting, and motor rotation are again started up, until second
Opening and first opening position stagger, second opening by the first cylinder lateral wall stop close, by rope by cylinder
During drawing, prevent by upper strata mud contamination.Control electric line can be adhered fixed and lifted by sealed plastic or adhesive tape parcel
On.In addition, the first cylinder and the second cylinder are connected using removably, during connection, by the axial top of the second cylinder by
The axial bottom open-mouth insertion of second cylinder, makes the free end of gag lever post be embedded in limiting slot and fixes, then lead to installing plate
Bolt is crossed to be fixed on limiting plate, it is simple in structure, it is easy to operate, easy to cleaning operation, prevent the first cylinder inboard wall and second
Excessive mud is accumulated between external wall, influences normal rotation operation.Finally, by telescopic putter and piston entirely through installing stopper
Be detachably connected at the axial top open end installed in the second cylinder, easy to clean, disassembling operations stretch drawbar and piston, prevent
Only accumulation influences piston promotion between piston outer wall and the second cylinder inboard wall.
Brief description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, forms one of the application
Point, do not form the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 faces cross section structure schematic diagram for the present invention is overall；
Fig. 2 is partial cross section's structure diagram of the present invention.
Mark and corresponding parts title in attached drawing：The first cylinders of 1-, the second cylinders of 2-, 3- motors, 4- shafts, 5- stretch
Contracting push rod, 6- pistons, 7- first are open, and 8- second is open, 9- ropes, 10- limiting plates, 11- installing plates, 12- bolts, 13-
Limiting slot, 14- gag lever posts, 15- installing stoppers, 16- column cock bodys, 17- baffles, 18- rubber seal rings, 19- grooves, 20- are universal
Connector, 21- auxiliary ropes.
Embodiment
For the object, technical solutions and advantages of the present invention are more clearly understood, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As depicted in figs. 1 and 2, drilling mud shaking sample collector of the present invention, including the first cylinder 1 and the second cylinder 2,
Second cylinder 2 is set in the first cylinder 1；The axial bottom of first cylinder 1 is open, and outside the open end on ring set
There is limiting plate 10, further include installing plate 11, the upper face centre of the installing plate 11 is equipped with motor 3, the motor 3
Output terminal is connected with shaft 4, and the axial bottom outer wall of the output terminal of shaft 4 and the second cylinder 2 is connected, and shaft 4 is with 3 turns of motor
Dynamic, the second cylinder 2 of drive rotates, and the installing plate 11 is fixed on limiting plate 10 by bolt 12；First cylinder 1 is axial
Top inner wall is equipped with limiting slot 13；The axial top of second cylinder 2 is open, further includes installing stopper 15, the installing stopper
The open end that 15 transition coordinate plug to be located at the second cylinder 2 is fixed, and the top end face of installing stopper 15 is equipped with fits with the limiting slot 13
The gag lever post 14 matched somebody with somebody；The bottom face of installing stopper 15 is equipped with telescopic rod push rod 5, the axial line of the telescopic putter 5 and second
The axial line of body 2 overlaps, and axial one end of telescopic putter 5 is fixed on the bottom face of installing stopper 15, the other end is equipped with piston 6；
The side wall of first cylinder 1 is equipped with the first opening 7, and the side wall of the second cylinder 2 is equipped with the second opening 8, and described first opens
7 and second opening 8 of mouth is in same level；Axial top is equipped with rope 9 outside first cylinder 1；The telescopic putter 5 is adopted
With hydraulic telescopic rod, the telescopic putter 5 and motor 3 are by controlling electric line to be connected with the controlling switch on ground.
Embodiment 2
Further improved on the basis of embodiment 1, the installing stopper 15 includes column cock body 16 and baffle 17, the column
The axial top of shape cock body 16 at the axle center of baffle 17 with being fixedly connected；The axial bottom outer wall of the column cock body 16 and second
The axial top opening inner thread connection of cylinder 2, the outside diameter of the baffle 17 are equal to the open end outside diameter of the second cylinder 2.Gear
Plate 17 towards being convexly equipped with rubber seal ring 18 on 16 end plate face of column cock body, 2 open end of the second cylinder be equipped with it is described
18 transition of rubber seal ring coordinates the groove 19 of adaptation.
Embodiment 3
Further improved on the basis of embodiment 2, in axial one end insertion limiting slot 13 of the gag lever post 14,
The axial other end is connected by universal joint 20 with the axial top outer wall of the second cylinder 2.First opening 7 is positioned at the first cylinder 1
On the side wall of axial direction bottom.Axial top is additionally provided with least two auxiliary ropes 21, the rope 9 outside first cylinder 1
It is connected with the circle centre position of the axial top end face of the first cylinder 1, the axial top end of auxiliary 21 and first cylinder 1 of rope
Face outer wall connection.
Above-described embodiment, has carried out the purpose of the present invention, technical solution and beneficial effect further
Describe in detail, it should be understood that the foregoing is merely the embodiment of the present invention, be not intended to limit the present invention
Protection domain, within the spirit and principles of the invention, any modification, equivalent substitution, improvement and etc. done, should all include
Within protection scope of the present invention.
Claims (6)
1. drilling mud shaking sample collector, it is characterised in that including the first cylinder (1) and the second cylinder (2), described second
Cylinder (2) is set in the first cylinder (1)；The axial bottom of first cylinder (1) is open, and outside the open end on be equipped with
Limiting plate (10), further includes installing plate (11), and the upper face centre of the installing plate (11) is equipped with motor (3), the electricity
The output terminal of machine (3) is connected with shaft (4), and the output terminal of shaft (4) is connected with the axial bottom outer wall of the second cylinder (2), and is turned
Axis (4) rotates with motor (3), drives the second cylinder (2) to rotate, and the installing plate (11) is fixed on limiting plate by bolt (12)
(10) on；The axial top inner wall of first cylinder (1) is equipped with limiting slot (13)；The axial top of second cylinder (2)
Opening, further includes installing stopper (15), and the open end that installing stopper (15) transition coordinates plug to be located at the second cylinder (2) is fixed, and is pacified
The top end face of dress plug (15) is equipped with the gag lever post (14) being adapted to the limiting slot (13)；Set on the bottom face of installing stopper (15)
There is telescopic rod push rod (5), the axial line of the telescopic putter (5) is overlapped with the axial line of the second cylinder (2), telescopic putter (5)
Axial one end be fixed on the bottom face of installing stopper (15), the other end is equipped with piston (6)；The side wall of first cylinder (1)
The first opening (7) is equipped with, the side wall of the second cylinder (2) is equipped with the second opening (8), and first opening (7) and second is opened
Mouth (8) is located in same level；Axial top is equipped with rope (9) to first cylinder (1) outside；The telescopic putter (5) uses
Hydraulic telescopic rod, the telescopic putter (5) and motor (3) are by controlling electric line to be connected with the controlling switch on ground.
2. drilling mud shaking sample collector according to claim 1, it is characterised in that the installing stopper (15) includes
Column cock body (16) and baffle (17), the axial top of the column cock body (16) at the axle center of baffle (17) with being fixedly connected；
The axial bottom outer wall of the column cock body (16) is connected with the axial top opening inner thread of the second cylinder (2), the gear
The outside diameter of plate (17) is equal to the open end outside diameter of the second cylinder (2).
3. drilling mud shaking sample collector according to claim 2, it is characterised in that the baffle (17) is towards column
Rubber seal ring (18) is convexly equipped with shape cock body (16) end plate face, the second cylinder (2) open end is equipped with and the rubber
Sealing ring (18) transition coordinates the groove (19) of adaptation.
4. drilling mud shaking sample collector according to claim 1, it is characterised in that the axis of the gag lever post (14)
Be embedded in one end in the limiting slot (13), the axial other end by universal joint (20) and the axial top of the second cylinder (2) outside
Wall connects.
5. drilling mud shaking sample collector according to claim 1, it is characterised in that described first opening (7) position
In the first cylinder (1) on the side wall of axial bottom.
6. drilling mud shaking sample collector according to claim 1, it is characterised in that first cylinder (1) is outside
Axial top is additionally provided with least two auxiliary ropes (21), the rope (9) and the axial top end face of the first cylinder (1)
Circle centre position connection, it is described auxiliary rope (21) be connected with the axial top end face outer wall of the first cylinder (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236430.3A CN107939388A (en) | 2017-11-30 | 2017-11-30 | Drilling mud shaking sample collector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711236430.3A CN107939388A (en) | 2017-11-30 | 2017-11-30 | Drilling mud shaking sample collector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107939388A true CN107939388A (en) | 2018-04-20 |
Family
ID=61947965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711236430.3A Withdrawn CN107939388A (en) | 2017-11-30 | 2017-11-30 | Drilling mud shaking sample collector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107939388A (en) |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2276608A (en) * | 1993-03-18 | 1994-10-05 | Atomic Energy Authority Uk | Fluid sampler |
| CN101435748A (en) * | 2007-11-15 | 2009-05-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Cable rotary type hydrate probe boring sampling apparatus |
| CN101435750A (en) * | 2007-11-15 | 2009-05-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Non-interfering type deep sea hydrate probe boring sampling apparatus |
| CN201620889U (en) * | 2010-02-10 | 2010-11-03 | 中国石油天然气股份有限公司 | Small-pipe-diameter underground annular sampler |
| CN103364225A (en) * | 2013-07-18 | 2013-10-23 | 中交第三航务工程勘察设计院有限公司 | Silty fluid mud collecting device |
| US20140202690A1 (en) * | 2013-01-18 | 2014-07-24 | Halliburton Energy Services, Inc. | Method and apparatus for characterizing fluid channeling through a cement formation interface of a subterranian wellbore |
| CN104227846A (en) * | 2013-06-21 | 2014-12-24 | 中国石油化工股份有限公司 | Foam cement paste preparation device and application thereof |
| CN205844011U (en) * | 2016-05-31 | 2016-12-28 | 常州大东塑料制品有限公司 | Constant-current type oils and fats sampler |
| CN206158735U (en) * | 2016-09-13 | 2017-05-10 | 中国石油集团渤海钻探工程有限公司 | Throw formula of dragging for shaft bottom sampling tool |
| CN206470082U (en) * | 2017-02-28 | 2017-09-05 | 广西科技大学鹿山学院 | A kind of construction cement sampler |
| CN207813608U (en) * | 2017-11-30 | 2018-09-04 | 成都科盛石油科技有限公司 | Sampler for drilling mud detection |
-
2017
- 2017-11-30 CN CN201711236430.3A patent/CN107939388A/en not_active Withdrawn
Patent Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2276608A (en) * | 1993-03-18 | 1994-10-05 | Atomic Energy Authority Uk | Fluid sampler |
| CN101435748A (en) * | 2007-11-15 | 2009-05-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Cable rotary type hydrate probe boring sampling apparatus |
| CN101435750A (en) * | 2007-11-15 | 2009-05-20 | 中国石化集团胜利石油管理局钻井工艺研究院 | Non-interfering type deep sea hydrate probe boring sampling apparatus |
| CN201620889U (en) * | 2010-02-10 | 2010-11-03 | 中国石油天然气股份有限公司 | Small-pipe-diameter underground annular sampler |
| US20140202690A1 (en) * | 2013-01-18 | 2014-07-24 | Halliburton Energy Services, Inc. | Method and apparatus for characterizing fluid channeling through a cement formation interface of a subterranian wellbore |
| CN104227846A (en) * | 2013-06-21 | 2014-12-24 | 中国石油化工股份有限公司 | Foam cement paste preparation device and application thereof |
| CN103364225A (en) * | 2013-07-18 | 2013-10-23 | 中交第三航务工程勘察设计院有限公司 | Silty fluid mud collecting device |
| CN205844011U (en) * | 2016-05-31 | 2016-12-28 | 常州大东塑料制品有限公司 | Constant-current type oils and fats sampler |
| CN206158735U (en) * | 2016-09-13 | 2017-05-10 | 中国石油集团渤海钻探工程有限公司 | Throw formula of dragging for shaft bottom sampling tool |
| CN206470082U (en) * | 2017-02-28 | 2017-09-05 | 广西科技大学鹿山学院 | A kind of construction cement sampler |
| CN207813608U (en) * | 2017-11-30 | 2018-09-04 | 成都科盛石油科技有限公司 | Sampler for drilling mud detection |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180420 |
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| WW01 | Invention patent application withdrawn after publication |