CN117027701A - Drilling mud on-site treatment system and method - Google Patents
Drilling mud on-site treatment system and method Download PDFInfo
- Publication number
- CN117027701A CN117027701A CN202311288713.8A CN202311288713A CN117027701A CN 117027701 A CN117027701 A CN 117027701A CN 202311288713 A CN202311288713 A CN 202311288713A CN 117027701 A CN117027701 A CN 117027701A
- Authority
- CN
- China
- Prior art keywords
- chamber
- cover plate
- negative pressure
- oil tank
- pressure pump
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 title claims abstract description 44
- 238000000034 method Methods 0.000 title claims abstract description 30
- 239000010802 sludge Substances 0.000 claims abstract description 38
- 238000004891 communication Methods 0.000 claims abstract description 8
- 239000007787 solid Substances 0.000 claims description 50
- 239000007788 liquid Substances 0.000 claims description 37
- 238000005192 partition Methods 0.000 claims description 21
- 230000007246 mechanism Effects 0.000 claims description 20
- 238000007789 sealing Methods 0.000 claims description 13
- 238000011065 in-situ storage Methods 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 238000012545 processing Methods 0.000 claims description 4
- 150000001335 aliphatic alkanes Chemical class 0.000 abstract description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 abstract description 5
- 229910052799 carbon Inorganic materials 0.000 abstract description 5
- 239000010865 sewage Substances 0.000 description 17
- 239000007789 gas Substances 0.000 description 16
- 238000000926 separation method Methods 0.000 description 14
- 230000008569 process Effects 0.000 description 12
- 238000007872 degassing Methods 0.000 description 11
- 239000000203 mixture Substances 0.000 description 11
- 239000000126 substance Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 239000011435 rock Substances 0.000 description 5
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000001914 filtration Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 238000003860 storage Methods 0.000 description 3
- 238000002203 pretreatment Methods 0.000 description 2
- 238000011084 recovery Methods 0.000 description 2
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000005755 formation reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical group 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000009423 ventilation 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
- 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)
- Treatment Of Sludge (AREA)
Abstract
The application discloses a drilling mud on-site treatment system and a method, which relate to the field of oil-containing mud treatment and comprise a dirty oil tank, wherein the interior of the dirty oil tank is divided into a first chamber and a second chamber by a baffle plate, the top end of the dirty oil tank is in sliding fit with a first cover plate and a second cover plate, the first cover plate is used for covering the first chamber, and the second cover plate is used for covering the second chamber; the device also comprises a negative pressure pump, wherein the air inlet end of the negative pressure pump is communicated with the first cavity and the second cavity, and the air outlet end of the negative pressure pump is communicated to the outside of the dirty oil tank; a first valve is arranged on a communication path between the air inlet end of the negative pressure pump and the first chamber, and a second valve is arranged on a communication path between the air inlet end of the negative pressure pump and the second chamber. The application is used for solving the problems that the polluted oil tank in the prior art only has a collecting function and is easy to cause alkane gas to escape, and achieving the purposes of enabling the polluted oil tank to have on-site treatment capacity, improving the treatment efficiency of oily sludge, reducing uncontrollable carbon emission and the like.
Description
Technical Field
The application relates to the field of oil-containing mud treatment, in particular to a drilling mud on-site treatment system and method.
Background
Drilling mud, i.e. drilling fluid in the process of petroleum and gas exploitation and drilling. For offshore drilling platforms, after drilling out hydrocarbon-bearing producing or non-producing formations, the filtrate from the returned mud after treatment by the solids control system must be recovered for environmental protection.
The common practice in the prior art is that an auger conveyor is arranged in front of a vibrating screen in a solid control system, so that the tail end of the auger conveyor extends to a relatively wide area where a sewage tank can be lifted and placed, a filter material screened out by the vibrating screen in the solid control system is conveyed outwards by the auger conveyor, solid-liquid mixed sludge containing greasy dirt and rock debris falls from the tail end of the auger conveyor to a sewage tank below for temporary storage, and then the sewage tank with collected oily dirt is returned to land along with a ship for subsequent separation treatment. However, in the process that the sewage tank filled with the oil-containing sludge returns to the land along with the ship, the sewage tank is continuously swayed under the influence of sea wave jolt and the like, alkane gas is easy to escape from the mixture and is scattered and overflowed into the atmosphere from a gap of the sewage tank, and uncontrollable atmospheric pollution and carbon emission are caused; in addition, in the prior art, after the oil tank is transported to the land, pretreatment such as degassing, separating and the like is still needed for the oil-containing dirt collected in the oil tank, so that the efficiency is low.
Disclosure of Invention
The application provides a drilling mud on-site treatment system and a drilling mud on-site treatment method, which are used for solving the problem that an oil tank in the prior art only has a collection function and is easy to cause alkane gas to escape, and achieving the purposes of enabling the oil tank to have on-site treatment capacity, improving the treatment efficiency of oil-containing sludge, reducing uncontrollable carbon emission and the like.
The application is realized by the following technical scheme:
the drilling mud on-site treatment system comprises a dirty oil tank, wherein the interior of the dirty oil tank is divided into a first chamber and a second chamber by a partition board, the top end of the dirty oil tank is in sliding fit with a first cover plate and a second cover plate, the first cover plate is used for covering the first chamber, and the second cover plate is used for covering the second chamber; the device also comprises a negative pressure pump, wherein the air inlet end of the negative pressure pump is communicated with the first cavity and the second cavity, and the air outlet end of the negative pressure pump is communicated to the outside of the dirty oil tank; a first valve is arranged on a communication path between the air inlet end of the negative pressure pump and the first chamber, and a second valve is arranged on a communication path between the air inlet end of the negative pressure pump and the second chamber.
Aiming at the problems that a dirty oil tank in the prior art only has a collecting function and is easy to cause alkane gas to escape, the application provides a drilling mud on-site treatment system, the inside of a conventional dirty oil tank is divided into a first chamber and a second chamber by a baffle plate, and the two parts are respectively connected to the top by a first cover plate and a second cover plate in a sliding way, namely the first cover plate is used for covering the top of the first chamber and can slide away the first cover plate when the first chamber needs to be opened, and the second cover plate is used for covering the top of the second chamber and can slide away the second cover plate when the second chamber needs to be opened. The negative pressure pump can be used for exhausting air from the first cavity and the second cavity to form a negative pressure space, and the negative pressure pump can be used for independently exhausting air from the first cavity or the second cavity through controlling the first valve and the second valve.
When the application is particularly used, the dirty oil tank is lifted to the drilling platform and is arranged below the tail end of the auger conveyor; opening the first cover plate to enable the oily sludge conveyed by the auger conveyor to enter the first chamber; after the first chamber is filled to the upper limit of capacity, closing the first cover plate, and opening the second cover plate to enable the oily sludge conveyed by the auger conveyor to enter the second chamber; opening the first valve, closing the second valve, and starting the negative pressure pump to pump air from the first chamber; after the second chamber is filled to the upper limit of capacity, the negative pressure pump is shut down, the second cover plate is closed, and the dirty oil tank is removed from the lower part of the tail end of the auger conveyor; opening the second valve, closing the first valve, and starting the negative pressure pump to pump air from the second chamber.
According to the application, the interior of the traditional oil-containing tank is divided into two chambers, so that when one chamber is used for receiving the oil-containing sludge to be recovered on the drilling platform, the oil-containing sludge which is already loaded in the other chamber can be subjected to negative pressure degassing, and the gas such as alkane and the like in the chamber is actively induced to be separated from the oil-containing or sludge in a mode of reducing the air pressure, so that the content of the gas remained in the oil-containing sludge is reduced, and the uncontrollable atmospheric pollution and carbon emission in the process of returning the oil-containing tank to the port along with a ship are reduced.
In addition, the application can also work when the dirty oil tank is filled with rock debris on a platform to wait for a ship, or the dirty oil tank is transferred to the ship to wait for a ship to return to a port, or the ship returns to the port, so that the dirty oil tank can be wholly removed to replace a new dirty oil tank to continuously receive the discharged oily sludge after the second chamber is filled to the upper limit of capacity, normal oily sludge recovery operation can not be disturbed, and because the advanced degassing is carried out, the pretreatment time for degassing separation and the like of the internal sludge can be reduced after the dirty oil tank is transported to the land, and even the pretreatment steps for degassing separation are directly skipped, thereby obviously improving the treatment efficiency of a land logistics department on returning the dirty oil tank.
It should be noted that, when the present application extracts gas from the first cavity or the second cavity, the corresponding first cavity or the second cavity needs to be ensured to be in a sealed state, that is, a good sealing effect should be provided between the first cover plate or the second cover plate and the dirty oil tank. The specific sealing mode can be realized by adopting a common dynamic sealing technology, and is not limited herein.
Further, the negative pressure pump is arranged inside the partition plate, and a three-way channel connected with the air inlet end of the negative pressure pump is further arranged inside the partition plate. Namely, three ports of the three-way channel in the scheme are respectively connected with the air inlet end of the negative pressure pump, the first chamber and the second chamber. The negative pressure pump is arranged inside the partition plate, so that space can be saved, and meanwhile, the stacking of the dirty oil tank on the drilling platform or the ship is avoided.
Further, the sliding directions of the first cover plate and the second cover plate are perpendicular to the partition plate; the first cover plate and the second cover plate have a height difference; the first cover plate, the second cover plate and the partition plate are in dynamic sealing fit.
In the scheme, the first cover plate and the second cover plate have a height difference so as to avoid mutual interference; when the first chamber is required to be used for bearing the oil-containing sludge, the first cover plate can be slid above the second chamber, so that the first cover plate and the second cover plate are in a stacked state; when the second chamber is required to be used for receiving the oily sludge, the second cover plate can be slid above the first chamber so as to be in a stacked state with the first cover plate.
Further, the guide plate is embedded on the top surface of the first cover plate, one end, close to the direction where the second cavity is located, of the guide plate is hinged to the first cover plate, and the lifting mechanism is used for driving the guide plate to rotate.
The drilling platform is limited by the space of the field, the position for placing the sewage tank is fixed in general, and the tail end position of the auger conveyor is fixed, so that once the sewage tank is in place, the sewage tank body and the tail end of the auger conveyor are relatively fixed, and the application needs to convey the oil-containing sludge to the first chamber and the second chamber respectively, and the relative position of the sewage tank body and the tail end of the auger conveyor needs to be adjusted when the conveying position is switched: if the position of the dirty oil tank is adjusted, not only is a complicated process of lifting by using a crane needed, but also a practical problem that certain drilling platforms do not have the condition of providing a larger occupied area for the dirty oil tank exists; if the end position of the auger conveyor is adjusted, the auger conveyor needs to be moved integrally, and the auger conveyor and the vibrating screen are possibly not matched and butted. In order to overcome the defects, the guide plate is arranged on the top surface of the first cover plate and is embedded in the top surface of the first cover plate in a normal state. When this scheme is used, when the crane put dirty oil tank, place the auger conveyer terminal under with first cavity, at first collect oily mud with first cavity, after waiting that first cavity fills to the capacity upper limit, remove first apron to first cavity directly over and realize closing first cavity, then by climbing mechanism drive deflector rotation, the deflector rotates along its own articulated limit with first apron, upwards turn up, be the slope form, and reduce gradually towards second cavity place direction, and then lead through the deflector for the oily mud that drops from auger conveyer terminal can follow the deflector landing to inside the second cavity.
According to the scheme, the function of conveying the oily sludge to the appointed area in the dirty oil tank according to the need is realized on the premise that any position in the dirty oil tank and the auger conveyor is not changed, the defect that the site space and the equipment layout of the drilling platform are required to be adjusted is overcome, and the blank of the prior art is filled.
Further, baffles are arranged on the bottom surfaces of the first chamber and the second chamber, and the height of each baffle is smaller than that of the baffle; the baffle plate divides the interior of the first chamber and the second chamber into a liquid area and a solid area; the top of the liquid area is provided with a filter screen, the liquid area is internally provided with a stirring device, and the solid area is internally provided with a shaking mechanism.
The scheme equally divides the interior of the first cavity and the second cavity into two areas, namely a liquid area and a solid area, and the liquid area and the solid area are blocked by a baffle; the top end of the liquid region is subjected to solid-liquid separation through a filter screen, so that residual drilling fluid, stratum fluid and the like in the oily sludge discharged by the auger conveyor enter the liquid region through the filter screen, liquid collected in the liquid region can be stirred through a stirring device in the liquid region, and gases such as methane and the like dissolved in the liquid can be more fully degassed by being matched with a negative pressure environment; the mixture which cannot pass through the filter screen and is in a partial solid state such as the rock scraps, the oil-containing sludge and the like enters the solid state region, the mixture can be rocked through a rocking mechanism in the solid state region, jolt and rock on the sea surface in the process of returning to the land along with the port of a ship are simulated, and meanwhile, the gas such as methane and the like in the collected solid state mixture can be more fully degassed by being matched with the created negative pressure environment.
According to the scheme, the degassing effect of the application can be remarkably improved, the residual gas in the collected oily sludge is separated out to a large extent by stirring the liquid and shaking the solid and matching with negative pressure suction, and the risk of uncontrollable self-dispersion and overflow to the atmosphere in the process of returning to port along with the ship is further reduced; in addition, the scheme can also realize the on-site separation and collection of the solid, liquid and gas phases of the collected oil-containing sludge, thereby avoiding the process of separation treatment after returning to the land and further improving the treatment efficiency of the land logistics department on returning to the sewage tank.
Further, the filter screen gradually inclines downwards from one end far away from the solid-state zone to one end close to the solid-state zone, and one end of the filter screen close to the solid-state zone is connected to the top end of the baffle. According to the scheme, the inclined filter screen is used for guiding the mixture of the rock debris, the oily sludge and the like which cannot pass through the filter screen, so that the mixture can quickly enter the solid area.
Further, the shaking mechanism comprises a sliding rail arranged on the bottom surface of the solid area, a first sliding block in sliding fit with the sliding rail, a sliding table fixed on the first sliding block, and a linear reciprocating driving device for driving the first sliding block to slide along the sliding rail; the axis of the sliding rail is perpendicular to the surface of the baffle; still including placing the bag on the slip table, the bag top is open, and the bag can dismantle the lateral wall of connecting in solid-state district.
The rocking mechanism of this scheme is at the during operation, is straight reciprocating motion on the slide rail by straight reciprocating drive device drive first slider, and first slider drives slip table synchronous motion, can drive the sack reciprocating motion of placing on the slip table to the realization is to the rocking effect of oily mud in the sack.
The side wall of the solid area is detachably connected with the bag, so that the bag is convenient to replace and install, and the top of the bag is attached and fixed with the side wall of the solid area in the corresponding direction. The detachable connection mode of the bag and the side wall of the solid area can be any connection mode in the prior art, such as clamping, magic sticking or magnetic clamping.
According to the scheme, the mixture entering the solid area is contained by the bag, the flexibility of the bag can be utilized to meet the deformation requirement of continuous shaking, and the mixture is prevented from directly contacting with a shaking mechanism to influence the service life of the mixture; compared with the prior art, the method has the advantages that the collected objects are directly loaded into the sewage tank, and the substances in the tank are required to be pumped out by adopting the high-power suction pump after returning to the land, so that the bag can be directly lifted out, and the treatment efficiency of the land logistics department on the returned sewage tank can be improved.
Further, the shaking mechanism further comprises a first connecting rod hinged on the sliding table, a second connecting rod hinged on the bottom surface of the solid area and a telescopic rod hinged on the bottom surface of the solid area; the first connecting rod is hinged with the second connecting rod, and an impact piece is arranged at the hinged position of the first connecting rod and the second connecting rod; the first sliding groove is formed in the second connecting rod, the second sliding block is in sliding fit in the first sliding groove, and the top end of the telescopic rod is hinged to the second sliding block.
In this scheme, when the slip table was linear sliding, drive first connecting rod and be linear sliding, constitute slider-crank mechanism by first connecting rod, second connecting rod and slip table for at every turn the sliding sleeve slide to when being closest to the baffle, the striking piece all is in contact state with the baffle, thereby along with the continuous reciprocating motion of sliding sleeve, the striking piece constantly strikes the baffle, make the baffle, and the filter screen that links to each other with the baffle produces the vibration, and then be favorable to carrying out solid-liquid separation to the mixture that drops to the filter screen more, realize vibration filtration, promote solid-state mixture simultaneously along filter screen downwardly sliding fast entering solid-state district. In addition, the telescopic rod is matched with the second sliding block and the second sliding block is matched with the first sliding groove, so that the second sliding block is supported when sliding to the bottommost end of the first sliding groove.
It can be seen that the work of rocking mechanism has been utilized to this scheme has realized simultaneously to solid-liquid separation, vibration filtration's reinforcing effect.
An in situ treatment method based on a drilling mud in situ treatment system, comprising:
lifting the dirty oil tank to a drilling platform and arranging the dirty oil tank below the tail end of the auger conveyor;
opening the first cover plate to enable the oily sludge conveyed by the auger conveyor to enter the first chamber;
after the first chamber is filled to the upper limit of capacity, closing the first cover plate, and opening the second cover plate to enable the oily sludge conveyed by the auger conveyor to enter the second chamber;
opening the first valve, closing the second valve, and starting the negative pressure pump to pump air from the first chamber;
after the second chamber is filled to the upper limit of capacity, the negative pressure pump is shut down, the second cover plate is closed, and the dirty oil tank is removed from the lower part of the tail end of the auger conveyor;
opening the second valve, closing the first valve, and starting the negative pressure pump to pump air from the second chamber.
Further, after the oily sludge enters the first chamber or the second chamber:
enabling the oily sludge to fall on the filter screen firstly, enabling liquid substances in the oily sludge to enter a liquid region below the filter screen, enabling other substances which cannot pass through the filter screen to slide into a solid region along the filter screen, and enabling the substances to enter a bag for temporary storage;
starting a stirring device in the liquid region;
the method comprises the steps of starting a linear reciprocating driving device in a solid area, driving a sliding table for bearing a bag to do linear reciprocating motion, and driving an impact piece to intermittently impact a baffle for separating a liquid area from the solid area by the sliding table.
Compared with the prior art, the application has the following advantages and beneficial effects:
1. according to the on-site drilling mud treatment system and method, the interior of a traditional oil-containing tank is divided into two chambers, so that when one chamber is used for receiving oil-containing mud to be recovered on a drilling platform, the oil-containing mud which is already filled in the other chamber can be subjected to negative pressure degassing, and the gas such as alkane and the like in the chamber is actively induced to be separated from the dirty oil or the mud by a mode of reducing the air pressure, so that the content of the gas remained in the oil-containing mud is reduced, and the uncontrollable atmospheric pollution and carbon emission in the process of returning the oil-containing tank to a port along with a ship are reduced.
2. According to the drilling mud on-site treatment system and method, because the pre-degassing is carried out, the time consumption for carrying out the pre-treatment such as degassing separation on the internal sludge can be reduced after the dirty oil tank is transported to the land, and even the pre-treatment steps of the degassing separation can be skipped directly, the treatment efficiency of the land logistics department on the returned dirty oil tank is also obviously improved.
3. The drilling mud on-site processing system and method provided by the application realize the function of conveying the oil-containing mud to the appointed area in the dirty oil tank according to the need on the premise of not changing any position in the dirty oil tank and the auger conveyor, overcome the defect that the site space and equipment layout of the drilling platform are required to be adjusted, and fill the blank of the prior art.
4. According to the drilling mud on-site treatment system and method, through the mode of stirring liquid and shaking solid and the negative pressure suction, the degassing effect can be remarkably improved, so that residual gas in the collected oil-containing sludge is separated out to a large extent, and the risk of uncontrollable self-dispersing and overflowing to the atmosphere in the process of returning to a port along with a ship is further reduced.
5. The on-site treatment system and the on-site treatment method for the drilling mud can also realize on-site separation and collection of solid, liquid and gas phases of the collected oil-containing mud, further avoid the process of separation treatment after returning to the land, and further improve the treatment efficiency of the land logistics department on returning to the sewage tank.
6. The drilling mud on-site treatment system and method provided by the application utilize the work of the shaking mechanism and realize the enhancement effects of solid-liquid separation and vibration filtration.
Drawings
The accompanying drawings, which are included to provide a further understanding of embodiments of the application and are incorporated in and constitute a part of this specification, illustrate embodiments of the application and together with the description serve to explain the principles of the application. In the drawings:
FIG. 1 is a cross-sectional view of an embodiment of the present application;
FIG. 2 is a schematic diagram of an embodiment of the present application;
FIG. 3 is an enlarged view of a portion of FIG. 1 at A;
FIG. 4 is a partial enlarged view at B in FIG. 1;
FIG. 5 is a top view of an embodiment of the present application;
FIG. 6 is a schematic view of a pouch according to an embodiment of the present application;
FIG. 7 is a schematic view of a clamp in an embodiment of the application.
In the drawings, the reference numerals and corresponding part names:
1-dirty oil tank, 2-baffle, 3-first cavity, 4-second cavity, 5-first apron, 6-second apron, 7-negative pressure pump, 8-first valve, 9-second valve, 10-tee bend passageway, 11-deflector, 12-elevating system, 13-baffle, 14-filter screen, 15-agitating unit, 16-slide rail, 17-first slider, 18-slip table, 19-linear reciprocating drive, 20-bag, 21-first connecting rod, 22-second connecting rod, 23-telescopic link, 24-strike, 25-first spout, 26-second slider, 27-cabinet door, 28-ventilative filter screen, 29-recess, 30-holding tank, 31-third slider, 32-second spout, 33-anchor clamps, 34-holding bolt.
Detailed Description
For the purpose of making apparent the objects, technical solutions and advantages of the present application, the present application will be further described in detail with reference to the following examples and the accompanying drawings, wherein the exemplary embodiments of the present application and the descriptions thereof are for illustrating the present application only and are not to be construed as limiting the present application. In the description of the present application, it should be understood that the directions or positional relationships indicated by terms such as "front", "rear", "left", "right", "upper", "lower", "vertical", "horizontal", "high", "low", "inner", "outer", etc., are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the scope of the present application.
Example 1
A drilling mud on-site treatment system as shown in fig. 1 and 2 comprises a dirty oil tank 1, wherein the interior of the dirty oil tank 1 is divided into a first chamber 3 and a second chamber 4 by a partition plate 2, the top end of the dirty oil tank 1 is in sliding fit with a first cover plate 5 and a second cover plate 6, the first cover plate 5 is used for covering the first chamber 3, and the second cover plate 6 is used for covering the second chamber 4; the device further comprises a negative pressure pump 7, wherein the air inlet end of the negative pressure pump 7 is communicated with the first chamber 3 and the second chamber 4, and the air outlet end of the negative pressure pump 7 is communicated to the outside of the dirty oil tank 1; a first valve 8 is arranged on a communication path between the air inlet end of the negative pressure pump 7 and the first chamber 3, and a second valve 9 is arranged on a communication path between the air inlet end of the negative pressure pump 7 and the second chamber 4.
The negative pressure pump 7 is arranged inside the partition plate 2, and a three-way channel 10 connected with the air inlet end of the negative pressure pump 7 is further arranged inside the partition plate 2.
The sliding directions of the first cover plate 5 and the second cover plate 6 are perpendicular to the partition plate 2; and a height difference is formed between the first cover plate 5 and the second cover plate 6; the first cover plate 5, the second cover plate 6 and the partition plate 2 are in dynamic sealing fit.
The top surface of the first cover plate 5 is embedded with a guide plate 11, one end, close to the direction of the second chamber 4, of the guide plate 11 is hinged with the first cover plate 5, and the lifting mechanism 12 for driving the guide plate 11 to rotate is further included.
As shown in fig. 2, the side wall of the dirty oil tank is provided with a cabinet door 27 opposite to the negative pressure pump 7, and the cabinet door 27 is provided with a ventilation filter screen 28 which is used for communicating with the exhaust end of the negative pressure pump.
In this embodiment, the bottom surface of the first cover plate 5 is equal to the top surface of the partition plate 2, so that the first cover plate 5 can slide at the top end of the partition plate 2, the second cover plate 6 movably passes through the partition plate 2, a sealing gasket used for being in dynamic sealing fit with the first cover plate 5 is arranged at the top end of the partition plate 2, and a sealing gasket used for being in dynamic sealing fit with the second cover plate 6 is arranged on the wall of a through hole on the partition plate 2, through which the second cover plate 6 passes. In addition, the inner walls of the two opposite sides of the sewage tank are respectively provided with a first positioning groove and a second positioning groove which correspond to the first cover plate 5 and the second cover plate 6; when the first cover plate 5 covers the first cavity, one end of the first cover plate 5, which is far away from the direction in which the second cavity is located, is inserted into the first positioning groove; when the second cover plate 6 covers the second cavity, one end of the second cover plate 6 away from the direction in which the first cavity is located is inserted into the second positioning groove. Sealing gaskets are arranged in the first positioning groove and the second positioning groove, and when negative pressure is extracted, the corresponding cover plate can be firmly pressed on each sealing gasket by utilizing the pressure difference between the internal negative pressure and the external atmospheric pressure so as to realize sealing.
In a more preferred embodiment, the top surface of the first cover plate 5 is provided with a groove 29 for accommodating the guide plate 11, and the guide plate 11 is normally accommodated in the groove 29, and the top surface of the guide plate is flush with the top surface of the first cover plate.
In a more preferred embodiment, as shown in fig. 2 and 3, the bottom of the groove 29 is further provided with a receiving groove 30, the jacking mechanism 12 is an electric push rod, the bottom end of the electric push rod is hinged in the receiving groove 30, the top end of the electric push rod is hinged on the third slide block 31, the third slide block 31 is slidably matched in the second slide groove 32, and the second slide groove 32 is provided on the bottom surface of the guide plate 11. When the electric push rod stretches, the guide plate 11 can be turned over and lifted; when the electric putter is retracted to the shortest stroke, the guide plate 11 is completely received in the groove 29.
In a more preferred embodiment, the top surfaces of the first cover plate 5 and the second cover plate 6 are provided with handle grooves, so that the first cover plate 5 and the second cover plate 6 can be pulled from the outside to slide transversely.
This embodiment enables in situ treatment of drilling mud by:
lifting the sewage tank 1 to a drilling platform, enabling the first chamber 3 to be located right below the tail end of the auger conveyor, and enabling the auger conveyor to be located at one side far away from the direction in which the second chamber 4 is located;
opening the first cover plate 5 to enable the oily sludge conveyed by the auger conveyor to enter the first chamber 3;
after the first chamber 3 is filled to the upper limit of capacity, the first cover plate 5 is closed, the second cover plate 6 is opened, and the oily sludge conveyed by the auger conveyor enters the second chamber 4;
opening a first valve 8, closing a second valve 9, and starting the negative pressure pump 7 to suck air from the first chamber 3;
after the second chamber 4 is filled to the upper limit of capacity, the negative pressure pump 7 is shut down, the second cover plate 6 is closed, and the sewage tank 1 is removed from the lower part of the tail end of the auger conveyor;
the second valve 9 is opened, the first valve 8 is closed, and the negative pressure pump 7 is started to pump air from the second chamber 4.
The method for making the oily sludge conveyed by the auger conveyor enter the second chamber 4 comprises the following steps:
the guide plate 11 rotates to a proper angle along the hinge edge with the first cover plate 5 through the jacking mechanism 12, and the oily sludge conveyed by the auger conveyor falls onto the guide plate 11 and slides into the second chamber 4 along the guide plate 11.
In addition, negative pressure sensors can be arranged in the first chamber 3 and the second chamber 4, and are used for monitoring the vacuum degree in real time in the air extraction process of the negative pressure pump 7, so as to control the work of the negative pressure pump 7 to maintain the pressure within a set negative pressure range.
In addition, in operation, the gas pumped by the negative pressure pump 7 can be connected to a choke manifold of the well site through a temporary pipeline, so that orderly and controllable discharge or combustion is facilitated.
Example 2
On the basis of the embodiment 1, as shown in fig. 1, 4 and 5, the bottom surfaces of the first chamber 3 and the second chamber 4 are respectively provided with a baffle 13, and the height of the baffle 13 is smaller than that of the baffle 2; the baffle 13 divides the interior of the first chamber 3 and the second chamber 4 into a liquid area and a solid area; the top of the liquid area is provided with a filter screen 14, the liquid area is internally provided with a stirring device 15, and the solid area is internally provided with a shaking mechanism. The filter screen 14 is gradually inclined downwards from one end far away from the solid area to one end close to the solid area, and one end of the filter screen 14 close to the solid area is connected to the top end of the baffle 13.
The shaking mechanism comprises a sliding rail 16 arranged on the bottom surface of the solid area, a first sliding block 17 in sliding fit with the sliding rail 16, a sliding table 18 fixed on the first sliding block 17, and a linear reciprocating driving device 19 for driving the first sliding block 17 to slide along the sliding rail 16; the axis of the sliding rail 16 is perpendicular to the surface of the baffle 13; and a bag 20 placed on the sliding table 18, wherein the top of the bag 20 is open, and the bag 20 is detachably connected to the side wall of the solid area.
The device also comprises a first connecting rod 21 hinged on the sliding table 18, a second connecting rod 22 hinged on the bottom surface of the solid area and a telescopic rod 23 hinged on the bottom surface of the solid area; the first connecting rod 21 and the second connecting rod 22 are hinged with each other, and a striker 24 is arranged at the hinge joint of the first connecting rod 21 and the second connecting rod 22; the second connecting rod 22 is provided with a first chute 25, a second slide block 26 is in sliding fit in the first chute 25, and the top end of the telescopic rod 23 is hinged on the second slide block 26.
In fig. 5, in order to show the internal structure of the dirty tank, the first cover plate 5 and the second cover plate 6 are hidden.
In this embodiment, the first chamber 3 and the second chamber 4 are identical in all internal facilities and layout except for the difference of the upper cover plate.
In the embodiment, a liquid outlet is arranged at the bottom end of the liquid area, and a detachable plug is arranged at the outer side of the tank body of the dirty oil tank. It can be seen that this embodiment not only can realize the three-phase on-site separation to oily sludge, but also can convenient handling and recovery liquid, solid matter, utilizes the dirty oil tank to reduce the rear end processing degree of difficulty at the operating time of well site, improves whole operating efficiency and to dirty oil tank cyclic utilization's efficiency.
In operation, this embodiment works when the oily sludge enters the first chamber 3 or the second chamber 4:
the oily sludge falls on the filter screen 14 firstly, wherein liquid substances enter a liquid region below the filter screen 14, and other substances which cannot pass through the filter screen 14 slide into a solid region along the filter screen 14 and enter a bag 20 for temporary storage;
activating the stirring device 15 in the liquid zone;
the linear reciprocating driving device 19 in the solid area is started, the sliding table 18 for carrying the bag 20 is driven to do linear reciprocating motion, and the sliding table 18 drives the impact piece 24 to intermittently impact the baffle 13 for separating the liquid area and the solid area.
In a more preferred embodiment, the pouch 20 is used with a notch at the top end, the left top end being removably attached to the baffle 13 and the top ends of the remaining three sides being removably attached to the side walls of the solid region, as shown in fig. 6.
In a more preferred embodiment, the side of the baffle 13 may be provided with a groove, and the left top of the pouch 20 may be inserted into the groove and temporarily held.
In a more preferred embodiment, the side walls of the solid region are provided with clamps 33 as shown in FIG. 7, and the top edge of the pouch 20 is passed through the clamps 33 and compressed by the fixing bolts 34. In addition, the clamp 33 can also use electromagnet to realize temporary clamping of the top end of the bag passing through the clamp.
In a more preferred embodiment, the bladder 20 may be made of ton bags commonly used in oilfield chemistry, and may be provided with a hanging rope for easy lifting and replacement.
The foregoing description of the embodiments has been provided for the purpose of illustrating the general principles of the application, and is not meant to limit the scope of the application, but to limit the application to the particular embodiments, and any modifications, equivalents, improvements, etc. that fall within the spirit and principles of the application are intended to be included within the scope of the application.
It is noted that relational terms such as first and second, and the like are 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. Moreover, 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. In addition, the term "coupled" as used herein may be directly coupled or indirectly coupled via other components, unless otherwise indicated.
Claims (9)
1. A drilling mud on-site treatment system comprises a dirty oil tank (1), and is characterized in that the interior of the dirty oil tank (1) is divided into a first chamber (3) and a second chamber (4) by a partition plate (2), the top end of the dirty oil tank (1) is in sliding fit with a first cover plate (5) and a second cover plate (6), the first cover plate (5) is used for covering the first chamber (3), and the second cover plate (6) is used for covering the second chamber (4); the device also comprises a negative pressure pump (7), wherein the air inlet end of the negative pressure pump (7) is communicated with the first cavity (3) and the second cavity (4), and the air outlet end of the negative pressure pump (7) is communicated to the outside of the dirty oil tank (1); a first valve (8) is arranged on a communication path between the air inlet end of the negative pressure pump (7) and the first chamber (3), and a second valve (9) is arranged on a communication path between the air inlet end of the negative pressure pump (7) and the second chamber (4).
2. A drilling mud on-site treatment system according to claim 1, characterized in that the sub-atmospheric pump (7) is mounted inside a partition (2), the inside of the partition (2) being further provided with a three-way channel (10) connected to the inlet end of the sub-atmospheric pump (7).
3. A drilling mud in situ treatment system according to claim 1, wherein the sliding direction of the first cover plate (5), the second cover plate (6) are perpendicular to the partition plate (2); and a height difference is formed between the first cover plate (5) and the second cover plate (6); the first cover plate (5), the second cover plate (6) and the partition plate (2) are in dynamic sealing fit.
4. A drilling mud on-site treatment system according to claim 3, wherein a guide plate (11) is embedded in the top surface of the first cover plate (5), and one end of the guide plate (11) close to the direction of the second chamber (4) is hinged to the first cover plate (5), and the drilling mud on-site treatment system further comprises a lifting mechanism (12) for driving the guide plate (11) to rotate.
5. A drilling mud in situ processing system according to claim 1, wherein the bottom surfaces of the first chamber (3) and the second chamber (4) are provided with baffles (13), and the height of the baffles (13) is smaller than the height of the baffle (2); the baffle (13) divides the interior of the first chamber (3) and the second chamber (4) into a liquid area and a solid area; the top of the liquid area is provided with a filter screen (14), the liquid area is internally provided with a stirring device (15), and the solid area is internally provided with a shaking mechanism.
6. A drilling mud in situ treatment system according to claim 5, wherein the screen (14) tapers downwardly from an end remote from the solid zone to an end adjacent the solid zone, and the end of the screen (14) adjacent the solid zone is connected to the top of the baffle (13).
7. A drilling mud on-site treatment system according to claim 6, characterized in that the shaking mechanism comprises a sliding rail (16) arranged at the bottom surface of the solid zone, a first sliding block (17) slidingly fitted on the sliding rail (16), a sliding table (18) fixed on the first sliding block (17), and a linear reciprocating drive (19) for driving the first sliding block (17) to slide along the sliding rail (16); the axis of the sliding rail (16) is perpendicular to the surface of the baffle (13); the device also comprises a bag (20) placed on the sliding table (18), wherein the top of the bag (20) is open, and the bag (20) is detachably connected to the side wall of the solid area.
8. A drilling mud in situ processing system according to claim 7, wherein the shaking mechanism further comprises a first link (21) hinged on the slipway (18), a second link (22) hinged on the bottom surface of the solid zone, a telescopic link (23) hinged on the bottom surface of the solid zone; the first connecting rod (21) is hinged with the second connecting rod (22), and an impact piece (24) is arranged at the hinged position of the first connecting rod (21) and the second connecting rod (22); the second connecting rod (22) is provided with a first sliding groove (25), the second sliding block (26) is in sliding fit in the first sliding groove (25), and the top end of the telescopic rod (23) is hinged to the second sliding block (26).
9. An in situ treatment method based on a drilling mud in situ treatment system according to any one of claims 1 to 8, comprising:
lifting the dirty oil tank (1) to a drilling platform and arranging the dirty oil tank below the tail end of the auger conveyor;
opening the first cover plate (5) to enable the oily sludge conveyed by the auger conveyor to enter the first chamber (3);
after the first chamber (3) is filled to the upper limit of capacity, the first cover plate (5) is closed, the second cover plate (6) is opened, and the oily sludge conveyed by the auger conveyor enters the second chamber (4);
opening a first valve (8), closing a second valve (9), and starting a negative pressure pump (7) to exhaust air from the first chamber (3);
after the second chamber (4) is filled to the upper limit of capacity, the negative pressure pump (7) is shut down, the second cover plate (6) is closed, and the dirty oil tank (1) is removed from the lower part of the tail end of the auger conveyor;
opening the second valve (9), closing the first valve (8), and starting the negative pressure pump (7) to suck air from the second chamber (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311288713.8A CN117027701B (en) | 2023-10-08 | 2023-10-08 | Drilling mud on-site treatment system and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311288713.8A CN117027701B (en) | 2023-10-08 | 2023-10-08 | Drilling mud on-site treatment system and method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN117027701A true CN117027701A (en) | 2023-11-10 |
| CN117027701B CN117027701B (en) | 2023-12-15 |
Family
ID=88630319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311288713.8A Active CN117027701B (en) | 2023-10-08 | 2023-10-08 | Drilling mud on-site treatment system and method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN117027701B (en) |
Citations (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002044515A1 (en) * | 2000-11-28 | 2002-06-06 | Apollo Services Uk Ltd. | Apparatus and method for transferring dry oil and gas well drill cuttings |
| US20050269135A1 (en) * | 2004-06-04 | 2005-12-08 | Matt Swartout | Continuous positive flow backflash prevention system |
| CN204523483U (en) * | 2014-12-15 | 2015-08-05 | 张劲南 | Elemental body novel vibrating screen |
| CN106925394A (en) * | 2017-05-10 | 2017-07-07 | 湖州梦源环保科技有限公司 | A kind of efficient fixed-end forces device |
| CN107793189A (en) * | 2017-12-04 | 2018-03-13 | 北京中科博联环境工程有限公司 | Integrated solid waste processing system and its application method |
| CN211659440U (en) * | 2019-11-19 | 2020-10-13 | 潘小锦 | Sewage recovery device with automatic impurity separation function |
| CN212867468U (en) * | 2020-08-25 | 2021-04-02 | 西安天瑞石油机械设备有限公司 | Double-track mud vibrating screen |
| CN113318500A (en) * | 2021-08-02 | 2021-08-31 | 四川宝石机械专用车有限公司 | Pulsation drilling fluid vibrating screen |
| CN113424859A (en) * | 2021-06-24 | 2021-09-24 | 湖南好味屋食品有限公司 | Cooked meat product production line |
| CN214436906U (en) * | 2021-02-03 | 2021-10-22 | 山东招金金银精炼有限公司 | Raleic acid gold belt cleaning device |
| CN215520812U (en) * | 2021-04-02 | 2022-01-14 | 广汉市阿里圣姆石油设备有限公司 | Negative pressure shale shaker drainage means that dams |
| CN215939265U (en) * | 2021-08-02 | 2022-03-04 | 四川宝石机械专用车有限公司 | Gas-liquid separation device of negative pressure vibrating screen |
| US20220307336A1 (en) * | 2021-03-24 | 2022-09-29 | Southwest Petroleum University | Negative pressure shale shaker integrated with negative pressure generation and gas-liquid separation |
| CN115383475A (en) * | 2022-08-19 | 2022-11-25 | 黄山菲英汽车零部件有限公司 | Drum piece drilling equipment of stopping with adjustable can accurate location |
| CN115804982A (en) * | 2022-12-29 | 2023-03-17 | 四川轻化工大学 | Low-noise solid-liquid separation vibrating screen |
-
2023
- 2023-10-08 CN CN202311288713.8A patent/CN117027701B/en active Active
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002044515A1 (en) * | 2000-11-28 | 2002-06-06 | Apollo Services Uk Ltd. | Apparatus and method for transferring dry oil and gas well drill cuttings |
| US20050269135A1 (en) * | 2004-06-04 | 2005-12-08 | Matt Swartout | Continuous positive flow backflash prevention system |
| US20050269137A1 (en) * | 2004-06-04 | 2005-12-08 | Matt Swartout | Separation of evolved gases from drilling fluids in a drilling operation |
| CN204523483U (en) * | 2014-12-15 | 2015-08-05 | 张劲南 | Elemental body novel vibrating screen |
| CN106925394A (en) * | 2017-05-10 | 2017-07-07 | 湖州梦源环保科技有限公司 | A kind of efficient fixed-end forces device |
| CN107793189A (en) * | 2017-12-04 | 2018-03-13 | 北京中科博联环境工程有限公司 | Integrated solid waste processing system and its application method |
| CN211659440U (en) * | 2019-11-19 | 2020-10-13 | 潘小锦 | Sewage recovery device with automatic impurity separation function |
| CN212867468U (en) * | 2020-08-25 | 2021-04-02 | 西安天瑞石油机械设备有限公司 | Double-track mud vibrating screen |
| CN214436906U (en) * | 2021-02-03 | 2021-10-22 | 山东招金金银精炼有限公司 | Raleic acid gold belt cleaning device |
| US20220307336A1 (en) * | 2021-03-24 | 2022-09-29 | Southwest Petroleum University | Negative pressure shale shaker integrated with negative pressure generation and gas-liquid separation |
| CN215520812U (en) * | 2021-04-02 | 2022-01-14 | 广汉市阿里圣姆石油设备有限公司 | Negative pressure shale shaker drainage means that dams |
| CN113424859A (en) * | 2021-06-24 | 2021-09-24 | 湖南好味屋食品有限公司 | Cooked meat product production line |
| CN113318500A (en) * | 2021-08-02 | 2021-08-31 | 四川宝石机械专用车有限公司 | Pulsation drilling fluid vibrating screen |
| CN215939265U (en) * | 2021-08-02 | 2022-03-04 | 四川宝石机械专用车有限公司 | Gas-liquid separation device of negative pressure vibrating screen |
| CN115383475A (en) * | 2022-08-19 | 2022-11-25 | 黄山菲英汽车零部件有限公司 | Drum piece drilling equipment of stopping with adjustable can accurate location |
| CN115804982A (en) * | 2022-12-29 | 2023-03-17 | 四川轻化工大学 | Low-noise solid-liquid separation vibrating screen |
Non-Patent Citations (2)
| Title |
|---|
| 董怀荣, 李作会, 王平, 李琴, 蔡文军, 任富兴: "ZS6B型直线振动筛动力学性能描述", 石油矿场机械, no. 01 * |
| 陈金瑞: "真空吸附设备在油基钻井液处理中的应用研究", 《石油机械》, vol. 50, no. 12 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN117027701B (en) | 2023-12-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5839521A (en) | Oil and gas well cuttings disposal system | |
| US5842529A (en) | Oil and gas well cuttings disposal system | |
| US6213227B1 (en) | Oil and gas well cuttings disposal system with continous vacuum operation for sequentially filling disposal tanks | |
| US5564509A (en) | Oil and gas well cuttings disposal system | |
| NL1010637C2 (en) | Drilling waste processing system. | |
| NO326351B1 (en) | Apparatus and method for transferring dry cuttings from oil and gas wells | |
| CN103015523A (en) | Treatment vehicle and treating method for sucking sludge in city pipe network | |
| CN215520811U (en) | Negative pressure screening separator | |
| US11492859B2 (en) | Separator system and method | |
| CN117027701B (en) | Drilling mud on-site treatment system and method | |
| CN116816286B (en) | Drilling mud environmental protection handles solid-liquid separation system | |
| CN210714536U (en) | Punching device for coal mining | |
| CN209522621U (en) | A kind of petrochemical industry oily-water seperating equipment | |
| CN209277835U (en) | A kind of oil exploitation Deal With Drilling Fluid device | |
| CN205991038U (en) | Hydraulic oil container | |
| CN209575944U (en) | A kind of simple mud and water separating equipment | |
| CN208097480U (en) | A kind of cleaning separator for oil storage cabin | |
| CN201356991Y (en) | Oil-water separator for gas tank | |
| CN220928166U (en) | Remove soil pick-up treatment facility | |
| JP3416166B2 (en) | Solid-liquid suction / lift device and method of using same | |
| CN112554820B (en) | Drilling fluid rapid filtration equipment | |
| CN2639501Y (en) | Drilling machine | |
| CN213760711U (en) | Comprehensive multi-parameter intelligent gathering and transporting device | |
| CN218716691U (en) | Automatic drainage gas production device | |
| CN203783857U (en) | Negative pressure vacuum system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |