CN101554544A - Sandstone separation method and device thereof - Google Patents
Sandstone separation method and device thereof Download PDFInfo
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- CN101554544A CN101554544A CNA200910082931XA CN200910082931A CN101554544A CN 101554544 A CN101554544 A CN 101554544A CN A200910082931X A CNA200910082931X A CN A200910082931XA CN 200910082931 A CN200910082931 A CN 200910082931A CN 101554544 A CN101554544 A CN 101554544A
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Abstract
The invention discloses a sandstone separation method and a device thereof. A screen basket is arranged in a tank body and abandoned slurry first flows into the screen basket, fine slurry is filtered through the screen and enters the tank body outside the screen basket, and the sandstone enters a screw conveyer and is discharged outside the tank body through the screw conveyer. A rinsing spray mouth can be additionally arranged in the middle of the screw conveyer to spray and rinse the sandstone in conveying and cause the sandstone after discharge and separation to meet discharge standard. Meanwhile, the slurry generated in washing also flows in the tank body so that the consistency of the slurry in the tank is reduced and the slurry becomes good liquid, which is then output through a slurry pump and enters in next process for treatment. The invention not only can be independently used for separating and washing rock debris and sandstone in the abandoned slurry, but also is a key composition of the technology of a processing system that leads abandoned drilling mud not to drop to the ground and to continuously meet standards, changes a curing processing mode of traditional integral discharge at present and fills up a gap in the environment protection control field of domestic oil drilling.
Description
Technical field
The present invention relates to a kind of sandstone separation method and device thereof, be particularly related to a kind of method and apparatus that sandstone is separated from discarded slurry, can be applicable to the processing of the discarded slurry that produces in oil gas field or the mine drilling process, and other industry or the liquid and waste slag produced processing of living.
Background technology
In the drilling process of oil gas well, the drilling fluid of adapted complicated chemical medicament, effluxes from well head from underground a large amount of landwaste and the sandstone of carrying out through after the physical change of high temperature, high pressure under thousands of meters, becomes the danger refuse of underflow shape.For a long time, China adopts first centralized collection near the dirty mud sump that digs block rig to the processing of oilfield drilling discarded slurry, is cured the method for burying again and handles.This method has not only taken a large amount of land resource (every mouthful of well takes up an area of 2-5 mu), the disposal cost height, and in fact not to the danger refuse---drilling well discarded slurry (listing national environmental protection portion 2008 solids danger refuse register in) carries out innoxious processing up to standard, promptly, its pollution sources exist all the time, become natural environment, underground water source and ecological pollution hidden trouble.
30% is that drilling fluid is from underground landwaste that carries out and sandstone in drilling process in the drilling well discarded slurry, and these landwaste and sandstone are wrapped up by the mud that contains the large amount of complex chemical agent, and efflux with these mud, becomes solid danger refuse.If can be when mud effluxes with these landwaste and sandstone by washing with mud separation and with it, making it to reach innoxious discharge standard discharges or recycling, just can reduce the total content that the drilling well discarded slurry effluxes solid particulate matter in the thing, reduce the slurry denseness of discarded slurry, make the residue waste mud become flowability fluid thin pulp preferably, entering down one continuous processing technique program handles, thereby for realizing that whole discarded slurry does not land (promptly, no longer discarded slurry being drained in the discarded slurry pond) continuous processing up to standard plays crucial effect, and then change present traditional integral and efflux the curing tupe, fill up the blank in domestic petroleum drilling well environment protection treating field.
Summary of the invention
The object of the present invention is to provide and a kind ofly can receive discarded slurry effectively, constantly, and with drilling cuttings (sandstone) separation wherein, the method and apparatus that purification is discharged, the residue slurry denseness of removing behind the sandstone is reduced, become liquid preferably, enter down one continuous processing technique program and handle, thereby realize that waste drilling mud does not land continuous processing up to standard.
Technical scheme of the present invention is as follows:
A kind of sandstone separation method, one screen basket is set in a tank body, and discarded slurry flows to earlier in the screen basket, and thin slurry filters screen cloth and enters in the outer tank body of screen basket, big particle (being the drilling cuttings sandstone) then enters in the conveying worm (claiming auger again), and is external through the conveying worm drain tank.
In the above-mentioned sandstone separation method, described screen basket can be gravity flow screen or rotary screen.The screen-aperture size of screen basket generally is 1～5mm, and screen-aperture is selected to adapt to follow-up mud and taken off dried processing apparatus.As take off and do equipment choosing vacuum band filter, for the water filtering performance that improves mud should be chosen the upper limit; Select pressure type band filter if take off dried equipment, for the protection strainer should be chosen lower limit.
For gravity flow screen, usually an agitator need be set in screen basket, to increase the flowability of mud, avoid stopping up sieve aperture.Described agitator is preferably anchor agitator.
The screen basket of gravity flow screen form is usually designed to funnel-form, and its upper port receives mud, and lower port is communicated with conveying worm.And the screen basket of rotary screen form generally is with the oblique placement of rotary screen, goes into sieve mouthful at a high end, and screening mouth is at a low end, and screening mouth is communicated with described conveying worm.Conveying worm also is oblique placement usually, and low side is provided with the sandstone inlet, and the high-end sandstone that is provided with exports, and the sandstone outlet is positioned at outside the tank body.
In the above-mentioned sandstone separation method, the flight in conveying worm carries out spray washing to sandstone when promoting sandstone.Can carry out spray washing to the sandstone in promoting by one or more washing mouth spray water sprays that are arranged on the middle part of conveying worm, reach the effect of cleaning.Simultaneously, the bottom of conveying worm is a mesh-like, and the slurry that washing produces also flows in the tank body, and the slurry denseness is reduced becomes liquid preferably, reaches the purpose of pulping.
Further, above-mentioned tank body is generally box-shaped, and one or more (as two) agitator also is set in tank body usually, and the slurry that filter is gone in the tank body keeps flowing, and by the slush pump output that is located at tank base.
The present invention provides a kind of sandstone separator simultaneously, comprise that a tank body and places the screen basket in the tank body, it is characterized in that, this sandstone separator also comprises a conveying worm (claiming auger again), the screening mouth of screen basket is communicated with the sandstone inlet of conveying worm, and the sandstone outlet of conveying worm then is positioned at outside the tank body.
After the mud that contains sandstone entered screen basket, thin slurry filtered screen cloth and enters in the tank body, and big particles such as drilling cuttings sandstone then enter in the conveying worm through screening mouth, by the lifting of flight in the conveying worm, discharged from the outlet of conveying worm.
Above-mentioned screen basket can be gravity flow screen or rotary screen, and the screen-aperture size generally is 0.1～10mm, is preferably 1～5mm.
For the screen basket of gravity flow screen form, an agitator also is set in it, mud is stirred the formation eddy flow, this agitator is preferably anchor agitator.The gravity flow screen screen basket is usually designed to funnel-form, and upper port is a mud entrance, and lower port is communicated with conveying worm.
For the screen basket of rotary screen form, the oblique placement of rotary screen is gone into sieve mouthful at a high end, and screening mouth is at a low end, and screening mouth is connected described conveying worm.Being advisable with 5-10 degree (angle that refers to drum central axis and horizontal direction) in the angle of inclination of rotary screen, normally adopts angle steel skeleton, peripheral screen cloth.Many of operated by rotary motion have the spiral bar of certain spiral angle in cylinder, leave then in order to promote discarded slurry, quicken routed the separating of mud group, and it is the spiral bar of 10-15 degree that 12-20 bar helical angle for example is set.Drive after the transmission mechanism that rotary screen is made up of motor via reducer-belt pulley slows down and rotate, the transmission mechanism operated by rotary motion is at the cylinder low side.
Above-mentioned conveying worm can adopt tubular type not have an auger, and flight is set in the pipe, drives pipe inner screwy fin motor rotating and places the conveying worm top.The bottom of conveying worm is a mesh-like, can add one or more washing mouth sprays at the middle part of conveying worm, and the drilling cuttings sandstone in promoting is carried out spray washing, reaches the effect of cleaning, and the slurry that washing simultaneously produces also flows in the tank body.
The tank body of above-mentioned sandstone separator is generally box-shaped, and one or more agitators also are set in tank body usually, makes slurry keep flowing; Be provided with slush pump in tank base, the slurry that filter is gone in the tank body is exported by slush pump, enters next process and handles.
The present invention is when handling waste drilling mud, place drilling mud to efflux mouthful the place tank body or be equipped with (as auger etc.) by preceding extending and receive and efflux discarded slurry, effluxing discarded slurry enters in the interior screen basket of tank body, form eddy flow through stirring, thin slurry filters screen cloth and enters in the outer tank body of screen basket, big particle (drilling cuttings sandstone) falls into the conveying worm under the screen basket, and the drilling cuttings sandstone promotes through flight, discharges from the outlet of conveying worm.The washing mouth spray that adds at the conveying worm middle part, drilling cuttings sandstone in promoting is carried out spray washing, reach the effect of cleaning, so just the drilling cuttings sandstone in the mud is separated, and by effluxing after the washing, can make 30% solids (mainly being the drilling cuttings sand grains of particle diameter more than 1mm) in the discarded slurry break away from slurry, and the drilling cuttings sandstone that effluxes after the separation can reach discharge standard (execution detection method: GB 5086.2-1997 solid waste leaching toxicity, leaching method--horizontal succusion; The first class index of operative norm " integrated wastewater discharge standard---GB8978-1996 ").Simultaneously, residue slurry denseness is reduced becomes liquid preferably, and the slush pump output by tank base enters into down one continuous processing technique program and handles.Thereby realize that waste drilling mud does not land continuous processing up to standard, change present traditional integral and efflux the curing tupe, fill up the blank in domestic petroleum drilling well environment protection treating field.And the drilling cuttings sandstone that effluxes can be used for place mat road place usefulness, has realized environmental protection, energy-saving and emission-reduction and twice laid.
In addition, method and apparatus of the present invention can also be used for the processing of other drilling wells, drilling project (for example geological prospecting, boring bridge pier etc.), muddy water pressurization shield method driving (for example subway, river-crossing tunnel, municipal plumbing etc.) discarded slurry, and the processing of other industry and sanitary wastewater waste residue, be widely used in fields such as oil, metallurgy, mine, coal, building, chemical industry, electric power, water conservancy, traffic.
Description of drawings
Fig. 1 is the flow chart of sandstone separation method of the present invention.
Fig. 2 is the vertical section organigram of the sandstone separator of the gravity flow screen form used of the embodiment of the invention 1.
Fig. 3 a is the sectional side elevation of gravity flow screen screen basket and agitator thereof in the embodiment of the invention 1; Fig. 3 b is the vertical view of gravity flow screen internal stirrers.
Fig. 4 is the structural representation of auger in the embodiment of the invention 1 and 2.
Fig. 5 is the structural representation of the sandstone separator of the rotary screen form used of the embodiment of the invention 2.
Fig. 6 is the cutaway view of rotary screen A-A direction shown in Figure 5.
Among the figure:
1. tank body 2. gravity flow screens 3. gravity flow screen agitators 4. augers 5. are washed mouth sprays
6. sandstone exports 7. slurry agitators, 8. slush pumps, 9. auger motor 2-1. side screen clothes
2-2. end screen cloth 3-1. stirs anchor 3-2. shaft 3-3. motor 3-4. antihunting and supports
Support 4-1. auger shell 4-2. packing auger blade 4-3. auger minor axis 4-4. sandstone inlet 3-5. reinforce
10. rotary screen 10-1. goes into sieve mouthful 10-2. screening mouth 10-3. transmission mechanism
10-4. rotary screen screen cloth 10-5. angle steel skeleton 10-6. spiral bar
The specific embodiment
The invention will be further described below in conjunction with drawings and Examples.
As shown in Figure 2, the sandstone separator of present embodiment use comprises the tank body 1 of a box-shaped; The funnelform gravity flow screen 2 of one cylinder is set in tank body 1, the gravity flow screen agitator 3 of anchor formula is housed in the gravity flow screen 2; It is auger 4 that the lower part outlet of gravity flow screen 2 is communicated with conveying worm, and auger 4 does not have an auger for tubular type, is obliquely installed, and the bottom is arranged in tank body 1, and stretch out outside the tank body 1 on top; Auger motor 9 places the top of auger 4, and it drives the flight rotation in the auger 4; Auger 4 tops also are provided with sandstone outlet 6, and auger 4 middle parts are provided with washing mouth spray 5; Also be provided with slurry agitator 7 in tank body 1, tank body 1 bottom is provided with slush pump 8.
Wherein, the structure of gravity flow screen 2 and agitator 3 thereof is shown in Fig. 3 a and Fig. 3 b, and gravity flow screen 2 comprises the side screen cloth 2-1 of side and the end screen cloth 2-2 of bottom surface; Anchor agitator comprises stirring anchor 3-1, shaft 3-2 and the gravity flow screen 2 motor 3-3 outward that is installed in the gravity flow screen 2, motor 3-3 drives shaft 3-2 and stirs anchor 3-1 rotation, the antihunting that the gravity flow screen middle part is provided with shaft 3-2 supports 3-4, and is provided with reinforcing support 3-5 between four stirring anchor sheets.
The structure of auger 4 as shown in Figure 4, auger shell 4-1 in a tubular form, one end is sandstone inlet 4-4, the other end is sandstone outlet 6, helical form packing auger blade 4-2 is installed in the auger, packing auger blade 4-2 is provided with washing mouth spray 5 by the auger motor 9 that auger minor axis 4-3 is connected and installed in the port of export at the middle part of auger.Sandstone enters in the auger from the sandstone inlet 4-4 of auger, drives packing auger blade 4-2 rotation by auger motor 9, and sandstone is inner mobile at auger, simultaneously by the water washing of washing mouth spray 5 ejections, exports 6 from sandstone at last and discharges.
The flow process of processing discarded slurry as shown in Figure 1, place this device drilling mud to efflux mouthful place's reception and efflux discarded slurry, effluxing discarded slurry is introduced in the gravity flow screen 2 in the tank body 1, stir by anchor formula gravity flow screen agitator 3 and to form eddy flow, it is in the tank body 1 that thin slurry filtration screen cloth enters mud pit, big particle (drilling cuttings sandstone) falls into the tubular type of gravity flow screen 2 bottoms not to be had in the auger 4, drive through auger motor 9, the drilling cuttings sandstone promotes by the auger flight, discharges from the sandstone outlet 6 at auger 4 tops.Be added with washing mouth spray 5 at the middle part of tubular type auger, drilling cuttings sandstone in auger 4 promotes is carried out spray washing, reach the effect of cleaning, so just the drilling cuttings sandstone separating, washing in the mud is come out, make 30% solids in the discarded slurry break away from slurry, and the drilling cuttings sandstone that effluxes after the separation can reach discharge standard, simultaneously, the slurry that washing produces also flows in the tank body, and the slurry denseness is reduced becomes liquid preferably, reaches the purpose of pulping.Agitator in the tank body makes slurry keep flow regime, and slush pump 8 outputs by tank base enter into down one continuous processing technique program and handle, and realizes that really waste drilling mud does not land continuous processing up to standard.
Below table 1 and table 2 listed be the sandstone separator HD-I of two gravity flow screen form of practical application and specification and the main operational factor thereof of HD-II.
Table 1.HD sand-stone separator model and specification thereof
| Box sizes m | Gravity flow screen (mm) | Sieve aperture (mm) | Mud capacity (t/h) | |
| HD-I | 3.6×1.6×1.4 | Φ1400×700 | Φ0.1～ |
5～10 |
| HD-II | 4.5×2.0×1.4 | Φ1800×700 | Φ0.1～ |
10～20 |
Table 2.HD-I and HD-II sand-stone separator major parameter
| The gravity flow screen power of agitator | The gravity flow screen speed of agitator | Tubular type auger power | Tubular type auger rotating speed | The spray washing flow |
| N＝2.2/3.0kw | N=20 rev/min | N＝3.0/5.0kw | N=30 rev/ |
1=10～15l/ branch |
Table 3. goes out machine sandstone testing result
Annotate: GB5085.3-1996 " hazardous waste judging standard-leaching toxicity is differentiated ";
GB8978-1996 " sewage discharge comprehensive standard " primary standard.
As shown in Figure 5, present embodiment is the sandstone separator of rotary screen form, comprises the tank body 1 of a box-shaped; The oblique rotary screen 10 that is provided with in tank body 1, diameter of cylinder 1400mm, long 1400mm, about 10 degree in angle of inclination are gone into sieve mouthful 10-1 high-end at rotary screen, and screening mouth 10-2 is at low side, rotary screen 10 drives through transmission mechanism 10-3 by motor and rotates; The rotary screen 10 laterally inclined conveying worms that are provided with, promptly tubular type does not have an auger 4.
The section of the A-A direction of Fig. 5 intermediate roll sieve 10 as shown in Figure 6, rotary screen 10 is to constitute at the peripheral screen cloth 10-4 of a radial angle steel skeleton 10-5.Also be provided with 18 spiral bar 10-6 in the cylinder, helical angle 10 degree in order to promote discarded slurry, leave then.
The structure of auger 4 is with embodiment 1 (as shown in Figure 4), and the oblique side that is arranged on rotary screen is near the low side of rotary screen 10.The sandstone that comes out from screening mouth 10-2 enters the auger 4, finally discharges from sandstone outlet 6 after transportation and washing.
Below table 4 and table 5 listed be the specification and the main operational factor thereof of sandstone separator HD-III of the rotary screen form of practical application.
Table 4.HD-III sand-stone separator model and specification thereof
| Box sizes (m) | Screen cloth (mm) | Sieve aperture (mm) | Mud capacity (t/h) | |
| HD-III | 3.6×1.6×1.1 | Φ1400×1400 | Φ0.1～ |
5～10 |
Table 5.HD-III sand-stone separator major parameter
| The rotary screen power of motor | The rotary screen rotating speed | Tubular type auger power | Tubular type auger rotating speed | The spray washing flow |
| N＝5.0kw | N=15 rev/min | N＝3.0kw | N=30 rev/ |
1=10～50l/ branch |
The flow process of processing discarded slurry as shown in Figure 1, place this device drilling mud to efflux mouthful place's reception and efflux discarded slurry, effluxing discarded slurry enters in the rotary screen 10 in the tank body 1 by going into sieve mouthful 10-1 earlier, rolling by rotary screen forms eddy flow, it is in the tank body 1 that thin slurry filtration screen cloth enters mud pit, big particle (drilling cuttings sandstone) then falls into the tubular type that is arranged on the rotary screen side through screening mouth 10-2 not to be had in the auger 4, discharges from sandstone outlet 6 after promoting and washing.Drilling cuttings sandstone in 5 pairs of liftings of the washing mouth spray that adds on tubular type auger 4 carries out spray washing, reach the effect of cleaning, make the drilling cuttings sandstone that effluxes after the separation can reach discharge standard, simultaneously, slurry flows to the effect of also playing pulping in the tank body, and a jar interior slurry denseness is reduced becomes liquid preferably.Establish agitator in the tank body and make slurry keep flow regime, by slush pump output tank body, enter into down one continuous processing technique program and handle again, realize that really waste drilling mud does not land continuous processing up to standard.Further, the sandstone separator of rotary screen form is when handling waste drilling mud, sandstone separator with respect to the gravity flow screen form, because that has reduced discarded slurry advances the machine height, the mud mechanical transfer that makes drilling well solid controlling system and waste drilling mud not land between the continuous treatment system up to standard is more convenient and smooth and easy.
Although disclose embodiments of the invention and accompanying drawing for the purpose of illustration, but it will be appreciated by those skilled in the art that: in the spirit and scope that do not break away from the present invention and claims, various replacements, variation and modification all are possible, therefore, scope of the present invention is not limited to embodiment and the disclosed content of accompanying drawing.
Claims (10)
1. a sandstone separation method is provided with a screen basket in a tank body, and discarded slurry flows to earlier in the screen basket, and thin slurry filters screen cloth and enters in the outer tank body of screen basket, and sandstone then enters in the conveying worm, and is external through the conveying worm drain tank.
2. the method for claim 1 is characterized in that, described screen basket is gravity flow screen or rotary screen, and the screen-aperture size of screen basket is 0.1～10mm, is provided with an agitator in the wherein said gravity flow screen.
3. method as claimed in claim 2 is characterized in that described gravity flow screen is funnel-form, and its upper port receives mud, and lower port is communicated with described conveying worm; The oblique placement of described rotary screen is gone into sieve mouthful at a high end, and screening mouth is at a low end, and screening mouth is communicated with described conveying worm.
4. the method for claim 1, it is characterized in that, the oblique placement of described conveying worm, low side is provided with the sandstone inlet, and the high-end sandstone that is provided with exports, the sandstone outlet is positioned at outside the tank body, promotes sandstone by the flight in the conveying worm, simultaneously sandstone is carried out spray washing in the lifting process.
5. method as claimed in claim 4 is characterized in that, at the conveying worm middle part one or more washing mouth sprays is set.
6. method as claimed in claim 4 is characterized in that, the bottom of described conveying worm is a mesh-like, and the slurry that washing produces flows in the tank body.
7. the method for claim 1 is characterized in that, described tank body is a box-shaped, and the slurry that filter is gone in the tank body stirs the maintenance flow regime by one or more agitators, and by slush pump output tank body.
8. a sandstone separator comprises a tank body, a screen basket and a conveying worm, and described screen basket places in the tank body, and its screening mouth mouth is communicated with the sandstone inlet of described conveying worm, and the sandstone outlet of conveying worm is positioned at outside the described tank body.
9. sandstone separator as claimed in claim 8 is characterized in that, described screen basket is gravity flow screen or rotary screen, and the screen-aperture size of screen basket is 0.1～10mm, is provided with an agitator in the wherein said gravity flow screen.
10. sandstone separator as claimed in claim 8 is characterized in that, described conveying worm is that tubular type does not have an auger, and its bottom is a mesh-like, and the middle part is provided with one or more washing mouth sprays.
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| CNA200910082931XA CN101554544A (en) | 2009-04-24 | 2009-04-24 | Sandstone separation method and device thereof |
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|---|---|---|---|
| CNA200910082931XA CN101554544A (en) | 2009-04-24 | 2009-04-24 | Sandstone separation method and device thereof |
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| CNA200910082931XA Pending CN101554544A (en) | 2009-04-24 | 2009-04-24 | Sandstone separation method and device thereof |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121399A1 (en) * | 2009-04-24 | 2010-10-28 | 北京国油联合油田技术服务有限公司 | Method and device for treating waste mud |
| CN104671625A (en) * | 2015-02-12 | 2015-06-03 | 绿野工程私人有限公司 | Oil sludge and sand recycling system and oil sludge and sand thermochemistry phase slitting treatment device |
| CN104907161A (en) * | 2014-03-13 | 2015-09-16 | 福建大力管桩有限公司 | Rubble washing and tailing recycling device |
| CN107201883A (en) * | 2016-03-17 | 2017-09-26 | 扬州市驰城石油机械有限公司 | Drilling mud does not land the drilling mud carrying method in processing procedure |
| CN107362610A (en) * | 2017-08-09 | 2017-11-21 | 中铁六局集团有限公司 | A kind of shield machine mud filter residue system |
| CN113070204A (en) * | 2021-03-29 | 2021-07-06 | 陈玉金 | Fine sand screening installation for building |
-
2009
- 2009-04-24 CN CNA200910082931XA patent/CN101554544A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2010121399A1 (en) * | 2009-04-24 | 2010-10-28 | 北京国油联合油田技术服务有限公司 | Method and device for treating waste mud |
| CN104907161A (en) * | 2014-03-13 | 2015-09-16 | 福建大力管桩有限公司 | Rubble washing and tailing recycling device |
| CN104671625A (en) * | 2015-02-12 | 2015-06-03 | 绿野工程私人有限公司 | Oil sludge and sand recycling system and oil sludge and sand thermochemistry phase slitting treatment device |
| CN107201883A (en) * | 2016-03-17 | 2017-09-26 | 扬州市驰城石油机械有限公司 | Drilling mud does not land the drilling mud carrying method in processing procedure |
| CN107362610A (en) * | 2017-08-09 | 2017-11-21 | 中铁六局集团有限公司 | A kind of shield machine mud filter residue system |
| CN113070204A (en) * | 2021-03-29 | 2021-07-06 | 陈玉金 | Fine sand screening installation for building |
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Application publication date: 20091014 |