CN105696954A - Mud cyclic purification system and mud purification method during drilling - Google Patents
Mud cyclic purification system and mud purification method during drilling Download PDFInfo
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- CN105696954A CN105696954A CN201610172761.4A CN201610172761A CN105696954A CN 105696954 A CN105696954 A CN 105696954A CN 201610172761 A CN201610172761 A CN 201610172761A CN 105696954 A CN105696954 A CN 105696954A
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- mud
- boring
- cyclone
- drilling rod
- inverted cone
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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
Abstract
The invention discloses a mud cyclic purification system during drilling and a mud purification method thereof. The mud cyclic purification system is characterized in that a swirler (7) comprises a cylinder body (7.1), an inverted cone body (7.2) and an inverted cone hopper (7.3); a sand outlet (7.5) in the bottom of the inverted cone body (7.2) is in threaded connection with the inverted cone hopper (7.3) through an upper flange plate (8) and a lower flange plate (9); a sand outlet pipe (19) is fixed to the bottom end of the inverted cone hopper (7.3) of the swirler (7); and a first flow regulating valve (20) is arranged on the sand outlet pipe (19). The method comprises the key steps that mud in the swirler (7) is classified under the action of centrifugal force; and most drilling slags are thrown to the cylinder wall of a working cylinder, and rotate downwards to pass through the sand outlet (7.5), the inverted cone hopper (7.3) and the sand outlet pipe (19) to be completely discharged from the mud circulation. According to the purification system and the purification method, the energy consumption can be reduced, and the hole cleaning and deslagging efficiency is improved.
Description
Technical field
The present invention relates to drilling construction field in civil engineering, mud purification method when mud circulating purification system when being especially a kind of boring and boring。
Background technology
During drilling rod pore-forming, it is necessary to substantial amounts of mud, mud primarily serves retaining wall, cools down drill bit, takes away boring mud and the effect of the softening soil body。Mud can be previously prepared and leave in pulping pond, and during rod boring, pumping mud is in boring, certainly, when creeping into if in viscous soil horizon, it is also possible to directly water filling generates mud, reduces the amount of prefabricated mud, to save cost。
Certainly, the stickiness of mud to be utilized to take away boring mud, it is necessary to adopt mud circulating purification system that mud is circulated。The mud circulating purification system of prior art includes the drilling rod of hollow, grout outlet, mud pit with filter screen and desander。Drilling rod bottom is pulp inlet and upper end is grout outlet, drilling rod is fixed with the air inlet pipe of inner space with drilling rod, air inlet pipe is blown to drilling rod inner chamber and is formed bubble, drilling rod inner chamber is made to produce pressure reduction with mud-filled boring, cause that the mud in boring enters drilling rod inner chamber through pulp inlet and discharges from grout outlet, provide power for mud circulating purification system。The grout outlet of drilling rod connects with grout outlet entrance, and grout outlet outlet is positioned at the top of the filter screen of mud pit, and mud falls inflow mud pit after larger particles through strainer filtering, and the outlet of mud pit is connected with desander through feed pipe for mortar。
Desander includes cyclone, motor, drive mechanism, screen cloth and frame, cyclone top is the cylinder of a hollow, bottom is the reverse taper connected with cylinder, cylinder and reverse taper are closed into work cylinder, the entrance of cyclone and cylinder are oriented in a tangential direction and cyclone inlet and feed pipe for mortar outlet, cyclone apex is provided with the slurry mouth that overflows, the slurry mouth that overflows connects with boring through the first return pipe, reverse taper bottom is sand export, motor is of reciprocating vibration through transmission mechanism control screen cloth, sand export is positioned at above screen cloth, screen cloth is connected with and the second return pipe connected of holing。
The operation principle of above-mentioned mud circulating purification system is: the mud in boring is upwardly into grout outlet through drilling rod, filter then through filter screen first time, bulky grain boring mud is filtered out, then feed pipe for mortar is entered through mud pit, the work cylinder of cyclone is tangentially entered then through feed pipe for mortar, the mud entering work cylinder realizes classification under centrifugal action, namely the boring mud of larger particles thrown to the barrel of work cylinder and rotate discharge from sand export downwards, after screen filtration, the second return pipe is entered with the mud of a part, finally return that boring, and the purer mud of the few part of boring mud is discharged from the excessive slurry mouth at top with bumpy flow on secondary, return in boring through the first return pipe。
The mud circulating purification system of above-mentioned prior art suffers from the drawback that one, the work of this circulating purification system time, the motor of desander does not stop task driven screen cloth and swings, and its energy consumption is relatively larger；Two, also it is more essential point is that, this system purification slagging-off efficiency is low, even if having passed through the screening again of screen cloth from the mud of sand export discharge, yet suffer from significant component of little boring mud cannot eliminate, this part boring mud has looped back boring again, so, in boring procedure, generally require the demand that mud circulation repeatedly be can be only achieved clear hole。
Summary of the invention
The technical problem that the invention solves the problems that be to provide a kind of can reduce energy consumption, improve clear hole slagging-off efficiency boring time mud circulating purification system。
A kind of technical solution of the present invention is to provide mud circulating purification system during a kind of boring, and it includes the drilling rod of hollow, grout outlet and the mud pit with filter screen；Drilling rod bottom is pulp inlet and upper end is grout outlet, drilling rod is fixed with the air inlet pipe of inner space with drilling rod, the grout outlet of drilling rod connects with grout outlet entrance, and grout outlet outlet is positioned at the top of the filter screen of mud pit；This system also includes settling tank and cyclone；
Cyclone is by the hollow cylindrical body on top, the hollow reverse taper of bottom and the inverted cone hopper of bottom are constituted, the cylinder being interconnected and reverse taper composition work cylinder, cyclone inlet is oriented in a tangential direction with work cylinder, cyclone apex is provided with the slurry mouth that overflows, work cylinder body bottom is sand export, sand export periphery is fixed with upper flange plate, inverted cone hopper top is fixed with lower flange, upper flange plate and lower flange are spirally connected, the hole wall of the centre bore of upper flange plate and lower flange is the conical surface, the centre bore hole wall of upper flange plate, the centre bore hole wall of lower flange, the inner conical surface of reverse taper, the inner conical surface of inverted cone hopper is respectively positioned on the same conical surface；
The outlet of mud pit connects with the entrance of settling tank through the first feed pipe for mortar, first outlet of settling tank connects with cyclone inlet through the second feed pipe for mortar, the excessive slurry mouth of cyclone connects with boring through the first return pipe, the inverted cone hopper bottom of cyclone is fixed one and is gone out sandpipe, goes out sandpipe and is provided with first-class adjustable valve。
Another technical problem that the invention solves the problems that be to provide a kind of can reduce energy consumption, improve clear hole slagging-off efficiency boring time mud purification method。
The another kind of technical solution of the present invention is to provide a kind of mud purification method during boring, and its step includes:
When boring under a, drilling rod, to boring pumping mud；
B, through air inlet pipe drilling rod inner chamber being blown forms bubble so that drilling rod inner chamber produces pressure reduction with mud-filled boring, and the interior mud that causes holing enters grout outlet through pulp inlet and the grout outlet of drilling rod；
C, mud are discharged from grout outlet, fall bulky grain boring mud through strainer filtering, and flow in mud pit, enter settling tank then through the first feed pipe for mortar, and precipitation falls larger particles, then enters cyclone through the second feed pipe for mortar；
Mud in d, cyclone realizes classification under centrifugal action, major part boring mud thrown to the barrel of work cylinder and rotate down through sand export, inverted cone hopper and go out sandpipe thoroughly discharge mud circulation, and the purer mud of the few part of boring mud is discharged from the excessive slurry mouth at top, returns in boring through the first return pipe。
Mud purification method when adopting the mud circulating purification system during boring of above structure with boring compared with prior art, has the following advantages。
One, this system eliminates the motor of prior art desander, drive mechanism and screen cloth, simplifies structure, reduces cost, more reduces the energy consumption that system is run；Two, this technical scheme creatively proposes, discharge original from the sand export of cyclone and be expelled directly out blood circulation through screen filtration but still this part mud that cannot eliminate, so, this part mud is no longer back to boring, and the efficiency that purifies slagging-off is greatly improved；Although three can be lost a part of mud from sand export, but owing to adding an inverted cone hopper at sand export, achieve the effect reduced by mouth, reduce the number of dropouts of mud so that the mud amount actually run off through sand export is maintained in an economically receptible zone of reasonableness；And, just because of adding inverted cone hopper, while reducing, increase the counteracting force of secondary vortex stream, accelerate the process that purer mud flows out from excessive slurry mouth, accelerate the speed of mud circulation, further increase purification efficiency；Three, a settling tank it is additionally arranged, it is possible to play natural sedimentation effect, add single filter so that the slagging-off effect of this system is better more。Four, fixing one due to inverted cone hopper bottom and go out sandpipe, go out sandpipe and be provided with first-class adjustable valve, as such, it is possible to regulate the aperture of this valve body, in mud, boring mud is few, it is possible to aperture reduced, and reduces mud loss, it is to avoid waste mud。Five, the hole wall of the centre bore of upper flange plate and lower flange is the conical surface, the centre bore hole wall of upper flange plate, the centre bore hole wall of lower flange, the inner conical surface of reverse taper, inverted cone hopper inner conical surface be respectively positioned on the same conical surface, such design can guarantee that the smooth whereabouts of mud, it is to avoid the dead angle that mud is piled up occurs。
As improvement, this system also includes the second return pipe, the second outlet of the second return pipe entrance and settling tank, and the second return pipe outlet connects with boring, and the second return pipe is provided with second adjustable valve；Accordingly, after the mud liquid level in boring declines, the second adjustable valve of the second return pipe is opened so that a part of mud in settling tank is passed straight back in boring without cyclone。Such technical scheme, maximum benefit is, just in case occurring that cyclone efficiency is not enough, the situation that the interior mud liquid level that causes holing declines, second adjustable valve can be opened, according to the highly regulated directly amount of the mud of backflow from settling tank of mud liquid level, it is to avoid need significantly to supplement mud, save Financial cost。
Accompanying drawing explanation
Fig. 1 is the structural representation of present invention mud circulating purification system when holing。
Fig. 2 is the Zoom Side sectional structure schematic diagram of the cyclone of present invention mud circulating purification system when holing。
Shown in figure 1, drilling rod, 2, grout outlet, 3, filter screen, 4, mud pit, 5, air inlet pipe, 6, settling tank, 7, cyclone, 7.1, cylinder, 7.2, reverse taper, 7.3, inverted cone hopper, 7.4, overflow slurry mouth, 7.5, sand export, 8, upper flange plate, 9, lower flange, the 10, first feed pipe for mortar, 11, the second feed pipe for mortar, 12, the first return pipe, the 13, second return pipe, 14, boring, 15, second adjustable valve, 16, drill bit, 17, slush pump, 18, pulping pond, 19, sandpipe is gone out, 20, first-class adjustable valve。
Detailed description of the invention
Below in conjunction with the drawings and specific embodiments, the invention will be further described。
As shown in Figure 1 and Figure 2, the mud circulating purification system when present invention holes, it includes the drilling rod 1 of hollow, grout outlet 2, mud pit 4 with filter screen 3, settling tank 6 and cyclone 7。Drilling rod 1 bottom is pulp inlet and upper end is grout outlet, drilling rod 1 is fixed with the air inlet pipe 5 of inner space with drilling rod 1, specifically, the bottom of drilling rod 1 is provided with drill bit 16, drill bit 16 sets box and drilling rod 1 sets pin thread, drill bit 16 coordinates to tighten with drilling rod 1 male and female and is connected, and pulp inlet is arranged on the bottom of the drill bit 16 of drilling rod 1, and air inlet pipe 5 passes pin thread and drilling rod 1 inner space of drilling rod 1。Certainly, this air inlet pipe 5 is through a static and dynamic sealing ring and an air compressor machine connection, and in particular, air inlet pipe 5 connects with rotating ring and guarantees that air inlet pipe 5 can rotate along with drilling rod 1, and stationary ring connects with air compressor machine。
The grout outlet of drilling rod 1 connects with grout outlet 2 entrance, and grout outlet 2 exports the top of the filter screen 3 being fixed on mud pit 4 by the support on mud pit 4。
Cyclone 7 is by the hollow cylindrical body 7.1 on top, the hollow reverse taper 7.2 of bottom and the inverted cone hopper 7.3 of bottom are constituted, the cylinder 7.1 and the reverse taper 7.2 that are interconnected constitute work cylinder, cyclone 7 entrance is oriented in a tangential direction with work cylinder, cyclone 7 top is provided with the slurry mouth 7.4 that overflows, it is sand export 7.5 bottom work cylinder body bottom i.e. reverse taper 7.2, sand export 7.5 periphery is fixed with upper flange plate 8, inverted cone hopper 7.3 top is fixed with lower flange 9, upper flange plate 8 and lower flange 9 are spirally connected, the hole wall of the centre bore of upper flange plate 8 and lower flange 9 is the conical surface。The centre bore hole wall of upper flange plate 8, the centre bore hole wall of lower flange 9, the inner conical surface of reverse taper 7.2, inverted cone hopper 7.3 inner conical surface be respectively positioned on the same conical surface。Above-mentioned design is the discharge inverted cone hopper 7.3 that glides smoothly for the ease of boring mud。
The outlet of mud pit 4 connects with the entrance of settling tank 6 through the first feed pipe for mortar 10, first outlet of settling tank 6 connects with cyclone 7 entrance through the second feed pipe for mortar 11, the excessive slurry mouth 7.4 of cyclone 7 connects with boring 14 through the first return pipe 12, inverted cone hopper 7.3 bottom of cyclone 7 is fixed one and is gone out sandpipe 19, going out sandpipe 19 and be provided with first-class adjustable valve 20, going out sandpipe 19 bottom is slag-drip opening。
This system also includes the second return pipe 13, the second outlet of the second return pipe 13 entrance and settling tank 6, and the second return pipe 13 outlet connects with boring 14, and the second return pipe 13 is provided with second adjustable valve 15。
As shown in Figure 1 and Figure 2, the mud purification method when present invention holes, its step is as follows。
When a, drilling rod bore for 1 time, to 14 pumping mud of holing；Specifically, it is utilize slush pump 17 to be sent in boring 14 by mud prefabricated in pulping pond 18。
B, through air inlet pipe 5 drilling rod 1 inner chamber being blown forms bubble so that drilling rod 1 inner chamber and mud-filled boring 14 produce pressure reduction, cause that the inner chamber that in boring 14, mud enters drilling rod 1 through pulp inlet discharges the inner chamber of drilling rod 1 hence into grout outlet 2 then through grout outlet。
C, mud are discharged from grout outlet 2 outlet, filter out bulky grain boring mud through filter screen 3, and flow in mud pit 4, i.e. first class purification, this step filters out the boring mud granule more than 20mm。Entering settling tank 6 then through the first feed pipe for mortar 10, precipitation falls larger particles, i.e. secondary purification, sinks the boring mud granule falling 0.25mm～20mm。Then cyclone 7 is entered through the second feed pipe for mortar 11。Certainly, after the mud liquid level in boring 14 declines, the second adjustable valve 15 of the second return pipe 13 can be opened so that a part of mud in settling tank 6 is passed straight back in boring 14 without cyclone 7。
Mud in d, cyclone 7 realizes classification under centrifugal action, major part boring mud is thrown to the barrel of work cylinder and rotates down through sand export 7.5, inverted cone hopper 7.3 and go out sandpipe 19 and thoroughly discharge mud and circulate, certainly, also having least a portion of mud follows boring mud to discharge circulation together, but owing to sand export 7.5 is reduced by inverted cone hopper 7.3, so few in the quality entity of the mud run off, economically can bear。And the purer mud of the few part of boring mud is discharged from the excessive slurry mouth 7.4 at top, return in boring 14 through the first return pipe 12。Namely three poles purify, and in this step, can discharge the boring mud granule less than 0.25mm。
Claims (4)
1. mud circulating purification system when holing, it includes the drilling rod (1) of hollow, grout outlet (2) and the mud pit (4) with filter screen (3)；Drilling rod (1) bottom is pulp inlet and upper end is grout outlet, drilling rod (1) is fixed with the air inlet pipe (5) of inner space with drilling rod (1), the grout outlet of drilling rod (1) connects with grout outlet (2) entrance, and grout outlet (2) outlet is positioned at the top of the filter screen (3) of mud pit (4)；It is characterized in that: this system also includes settling tank (6) and cyclone (7)；
Cyclone (7) is by the hollow cylindrical body (7.1) on top, the hollow reverse taper (7.2) of bottom and the inverted cone hopper (7.3) of bottom are constituted, the cylinder (7.1) being interconnected and reverse taper (7.2) constitute work cylinder, cyclone (7) entrance is oriented in a tangential direction with work cylinder, cyclone (7) top is provided with slurry mouth (7.4) that overflows, work cylinder body bottom is sand export (7.5), sand export (7.5) periphery is fixed with upper flange plate (8), inverted cone hopper (7.3) top is fixed with lower flange (9), upper flange plate (8) and lower flange (9) are spirally connected, the hole wall of the centre bore of upper flange plate (8) and lower flange (9) is the conical surface, the centre bore hole wall of upper flange plate (8), the centre bore hole wall of lower flange (9), the inner conical surface of reverse taper (7.2), the inner conical surface of inverted cone hopper (7.3) is respectively positioned on the same conical surface；
The outlet of mud pit (4) connects through the entrance of the first feed pipe for mortar (10) with settling tank (6), first outlet of settling tank (6) connects with cyclone (7) entrance through the second feed pipe for mortar (11), the excessive slurry mouth (7.4) of cyclone (7) connects with boring (14) through the first return pipe (12), inverted cone hopper (7.3) bottom of cyclone (7) is fixed one and is gone out sandpipe (19), goes out sandpipe (19) and is provided with first-class adjustable valve (20)。
2. mud circulating purification system during boring according to claim 1, it is characterized in that: this system also includes the second return pipe (13), second outlet of the second return pipe (13) entrance and settling tank (6), second return pipe (13) outlet connects with boring (14), and the second return pipe (13) is provided with second adjustable valve (15)。
3. mud purification method when holing, it is characterised in that: its step includes:
When boring under a, drilling rod (1), to boring (14) pumping mud；
B, through air inlet pipe (5) to drilling rod (1) inner chamber blow formed bubble, make drilling rod (1) inner chamber produce pressure reduction with mud-filled boring (14), cause that boring (14) interior mud enters grout outlet (2) through pulp inlet and the grout outlet of drilling rod (1)；
C, mud are discharged from grout outlet (2), bulky grain boring mud is filtered out through filter screen (3), and flow in mud pit (4), settling tank (6) is entered then through the first feed pipe for mortar (10), precipitation falls larger particles, then enters cyclone (7) through the second feed pipe for mortar (11)；
Mud in d, cyclone (7) realizes classification under centrifugal action, major part boring mud is thrown to the barrel of work cylinder and rotates down through sand export (7.5), inverted cone hopper (7.3) and go out sandpipe (19) thoroughly discharge mud circulation, and the purer mud of the few part of boring mud is discharged from the excessive slurry mouth (7.4) at top, returns in boring (14) through the first return pipe (12)。
4. mud purification method during boring according to claim 3, it is characterized in that: after the mud liquid level in boring (14) declines, open the second adjustable valve (15) of the second return pipe (13) so that a part of mud in settling tank (6) is passed straight back in boring (14) without cyclone (7)。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172761.4A CN105696954A (en) | 2016-03-24 | 2016-03-24 | Mud cyclic purification system and mud purification method during drilling |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610172761.4A CN105696954A (en) | 2016-03-24 | 2016-03-24 | Mud cyclic purification system and mud purification method during drilling |
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| CN105696954A true CN105696954A (en) | 2016-06-22 |
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| CN201610172761.4A Pending CN105696954A (en) | 2016-03-24 | 2016-03-24 | Mud cyclic purification system and mud purification method during drilling |
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Cited By (3)
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| CN108868672A (en) * | 2018-07-03 | 2018-11-23 | 上海公路桥梁（集团）有限公司 | Mud sand filter and its construction method |
| CN109322632A (en) * | 2018-11-28 | 2019-02-12 | 青海九0六工程勘察设计院 | Reconnoitre the control system and method for hydrogeologic drilling mud circulating purifying device |
| CN114198038A (en) * | 2021-11-19 | 2022-03-18 | 上海二十冶建设有限公司 | High-position mud water tank device of circulating drilling machine and construction method |
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Application publication date: 20160622 |