CN103485748A - Automatic sand mixing system and automatic sand mixing process for water-dry lime sand mixed artificial borehole wall sand protection - Google Patents
Automatic sand mixing system and automatic sand mixing process for water-dry lime sand mixed artificial borehole wall sand protection Download PDFInfo
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- CN103485748A CN103485748A CN201310494689.3A CN201310494689A CN103485748A CN 103485748 A CN103485748 A CN 103485748A CN 201310494689 A CN201310494689 A CN 201310494689A CN 103485748 A CN103485748 A CN 103485748A
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Abstract
The invention relates to an automatic sand mixing system and an automatic sand mixing process for water-dry lime sand mixed artificial borehole wall sand protection. The automatic sand mixing system comprises a lime tank truck, a cementing truck, a sand tank, a measuring truck and a sand mixing truck, wherein a rotary stirring mechanism is arranged on the bottom of a sand mixing container which is arranged on the sand mixing truck; a screw sand conveying system is mounted on the upper part of the sand mixing container. An auger mechanism of the screw sand conveyor extends into a sand hopper, and brings quartz sand which is poured into the sand hopper from the sand tank into the sand mixing container from bottom to top in the rotary stirring process; the volume of the quartz sand carried by the auger can be automatically controlled and metered; the sand mixing container is further communicated with a cement slurry output port of the cementing truck; when the density and fluid velocity of the sand slurry change, the sand mixing truck is capable of automatically adjusting the density of the sand fluid according to a pre-programmed program model. During the whole process, mechanical automatic preparation is realized, the mixing stirring is even and no manual transportation and stirring are needed, and therefore, the operation labor intensity is greatly alleviated and dust is prevented from flying outwards to avoid polluting the environment.
Description
Technical field
The invention belongs to the oil drilling machine field, be specifically related to a kind of when the operation of water band dry ash sand artificial borehole wall sand prevention, can use automatically join sand system and technique.
Background technology
Water band dry ash sand artificial borehole wall sand prevention is domestic use a kind of sand-preventing process comparatively widely, this sand-preventing process be take cement as adhesive material, take quartz sand as support, even at the ground mix in proportion, water is taken to down-hole, clamp-ons outside sleeve pipe, is piled up in the sanding formation position, solidify rear formation and there is some strength and infiltrative artificial borehole wall, can stop that reservoir sand flows to pit shaft and possesses certain plugging function.Be applicable to the low pressure oil well in the later stage, the oil-water well shaked out, multiple zone, high-water-cut oil-producing well and sand proof well section at 50m the sand control with interior oil-water well.Laboratory test shows to inject the cement dry ash on stratum and quartz sand weight ratio when 1:2, and sand controlling result is best.This technique has the following disadvantages:
1, the manpower that manually mix dry ash sand, manually adds dry ash sand all to take is many, need 25 people left and right to carry to mix ash the previous day standby, labour intensity is large, dust pollution is serious, especially summer, sweat was more, dry ash sand touches application on human skin can cause skin burn, accidentally blows in eyes the cornea of also can burning (once occurred overdrying sand-lime burn eyes accident), and the most original this rough form of construction work utmost point is unfavorable for employee's physical and mental health.
2, take during sand cutting bag dry cement ash ground, simple 2 bags of quartz sand+1 to mix, there is no criterion, the ratio that can not guarantee quartz sand and dry cement is strict 2:1, laboratory test shows, the ratio of cement-sand ratio has considerable influence to cementing strength, the in-place permeability of artificial borehole wall, thereby affects sand controlling result.If cement amount is on the low side, the artificial borehole wall formed in down-hole after cementing is insecure, can not effectively stop reservoir sand, and cement amount is higher, can reduce the permeability of artificial borehole wall, thereby affects sand controlling result.Chang Youshui is anti-does not guard against sand or sand control success after construct but the phenomenon generation of not intaking is annotated on stratum, with the ratio of dry ash sand is inhomogeneous much relations is arranged.
While 3, adding dry ash sand, do not measure the device of sand ratio, can only simply determine to add the sand speed according to the height of operation pressure, fuzzy sand ratio, affect sand controlling result.
If 4, in the construction, run into pipe plug or strata pressure is too high, be limited to 400 type cementing truck pump pressures, discharge capacity limiting value, add sand and can not reach design flow, very easily cause constructing unsuccessfully.
If 5, dry ash sand has a large amount of residues, can cause significant wastage, pollute well site, also to the later stage, dispose and bring puzzlement.
6, after the detritus of cement, quartz sand packaging bag is sneaked in agitator tank, can cause manifold, plunges pump body, down-hole string to stop up, cause construction failure midway.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of water band dry ash sand artificial borehole wall sand prevention automatically to join sand system and technique, join the sand ratio more evenly, accurately, and improve the construction technology fallen behind, can significantly reduce labor strength, environmental contamination reduction, improve construction quality.
For solving the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of water band dry ash sand artificial borehole wall sand prevention is joined the sand system automatically, it is characterized in that: comprise a measuring truck, one for the grey tank car that loads and unloads cement, one for the cementing concrete truck that cement is made into to cement paste, one for the sand tank car that loads quartz sand, one for cement paste and quartz sand mix and blend being formed to the fracturing blender truck of water band dry ash sand cement slurry, the pressurization pump truck is set after fracturing blender truck, and described force (forcing) pump directly pumps into down-hole formation by water band dry ash sand cement slurry; The mulling container bottom arranged on fracturing blender truck arranges the rotation rabbling mechanism, between mulling container top and sand tank car, is obliquely installed the tubular screw conveyer; On screw-conveyer-shaft, the blade of being made by roll of steel plate is installed in the spiral shell screw conveyer, and the screw conveyer top arranges the sand batching counter; The screw conveyer bottom is stretched between the sand tank car; Screw conveyer carries quartz sand from the bottom to top in the mulling container in the process of Stirring, and the every circle of screw-conveyer-shaft rotates entrained quartz sand body accumulated amount unanimously and can automatically be controlled and measure by the sand batching counter; Screw conveyer is connected with automatic mulling control system, and the mulling control system is contained on measuring truck automatically; The mulling container also is communicated with the cement paste output port of cementing concrete truck; The cement slurry density checkout gear is set on cementing concrete truck; The sand batching counter all is connected with automatic mulling control system central controller with the cement slurry density checkout gear.
By technique scheme, described sand batching counter is measurement gear.
By technique scheme, described rotation rabbling mechanism is the vertical mixing impeller.
By technique scheme, described system also arranges water tender, and water tender is connected with cementing concrete truck.
By technique scheme, in described grey tank car, bulk cement storage tank is set, the bulk cement storage tank two bottom sides all arranges vaporizer, and air supply system is communicated with vaporizer by pneumatic operated valve; Bulk cement storage tank is communicated with vaporizer by ash discharging valve; On the ash tank car, pneumatic control system and manifold assembly also are set.
When slurry density and flow rate of liquid change, fracturing blender truck can be adjusted the liquid-tight degree of sand automatically according to the procedural model woven in advance.Overall process mechanical automation configuration, proportioning stirs, and without artificial transportation, stirring, greatly alleviates operation labour intensity, avoids dust to raise contaminated environment outward.
A kind of adopt above-mentioned join the sand system automatically join sand technique, it is characterized in that:
At first carry out the cement paste preparation, cement and water are injected respectively to cementing concrete truck from grey tank car and stir and be mixed with low-density cement mortar, and detect in real time cement slurry density and feed back to central controller;
Cement paste is injected to fracturing blender truck mulling container, and by screw conveyer 4, the quartz sand Stirring is brought in the mulling container simultaneously, this process Counter is write down the number of turns that in screw conveyer, screw-conveyer-shaft rotates, and feeds back to central controller and calculates quartz sand content or sand ratio according to setting program;
Central controller, according to cement slurry density and the sand ratio of feedback, determines that whether join sand than reaches setting value, if reach can stablize output operation; Do not continue to adjust according to feedback result the batching needed if reach setting value;
Join after sand completes and stir, by fracturing blender truck, through excavationg pump and pressurization, pump and directly will join mortar and pump into stratum in well.
By technique scheme, join the sand ratio and be set as cement dry ash and quartz sand weight ratio at 1:2.
With respect to prior art,
System of the present invention and process advantage are embodied in:
Overall process mechanical automation configuration, without artificial transportation, stirring, greatly alleviate operation labour intensity.
The cement-sand ratio mechanical arrangements, electronic monitoring, more evenly, accurately, construction quality is secure for ratio.
No dust pollution, without dry ash waste, construction environmental protection, energy-conservation.
The accompanying drawing explanation
Below in conjunction with accompanying drawing, with each embodiment, the invention will be further described.
Fig. 1 is that water band dry ash sand artificial borehole wall sand prevention of the present invention is joined sand main structure of system schematic diagram automatically.
Fig. 2 is that water band dry ash sand artificial borehole wall sand prevention of the present invention is automatically joined the sand system and cement is made into to the flow chart of cement paste.
Fig. 3 is the grey tank car ash discharge schematic flow sheet that water band dry ash sand artificial borehole wall sand prevention of the present invention is joined the sand system automatically.
Fig. 4 is sand and the cement paste mixed process schematic diagram that water band dry ash sand artificial borehole wall sand prevention of the present invention is joined the sand system automatically.
The specific embodiment
Below in conjunction with accompanying drawing and example, the present invention is further detailed explanation.
Automatically join the sand system as Figure 1-4 according to water band dry ash sand artificial borehole wall sand prevention of the invention process, comprise a measuring truck, at least one for the grey tank car 6 that loads and unloads cement, one for the cementing concrete truck that cement is made into to cement paste, one for the sand tank car 1 that loads quartz sand, one for cement paste and quartz sand mix and blend being formed to the fracturing blender truck of water band dry ash sand cement slurry, the pressurization pump truck is set after fracturing blender truck, and described force (forcing) pump directly pumps into down-hole formation by water band dry ash sand cement slurry; Mulling container 2 bottoms that arrange on fracturing blender truck arrange vertical mixing impeller 3, between mulling container 2 tops and sand tank car 1, are obliquely installed tubular screw conveyer 4; On the interior screw-conveyer-shaft of screw conveyer 4, the blade of being made by roll of steel plate is installed, and screw conveyer 4 tops arrange the sand batching counter, screw conveyer 4 bottoms are stretched between sand tank car 1; Screw conveyer 4 carries quartz sand from the bottom to top in mulling container 2 in the process of Stirring, and the quartz sand body accumulated amount that auger carries can automatically be controlled and measure; Screw conveyer 4 is connected with automatic mulling control system, and the mulling control system is contained on measuring truck automatically; Mulling container 2 also is communicated with the cement paste output port of cementing concrete truck; The cement slurry density checkout gear is set on cementing concrete truck; The sand batching counter all is connected with automatic mulling control system central controller with the cement slurry density checkout gear.When slurry density and flow rate of liquid change, fracturing blender truck can be adjusted the liquid-tight degree of sand automatically according to the procedural model woven in advance.
The mulling container 2 arranged on fracturing blender truck adopts the structure of pot-in-pot, guarantees that mortar mixes fully continuously, prevents inhomogeneous composite mortar.And the surface area of inner chamber is larger, can soaks into quartz sand fully and avoid producing bubble.Vertical mixing impeller 3 is arranged on the center of blending tank, can fully constantly mortar be stirred into to homogeneous mixed liquor, reduce to greatest extent and produce gas to discharging between sand pump at the intracavity bottom outlet opening, vertical mixing impeller 3 rotating speeds are controlled by the potentiometer be contained on instrument desk, and speed is adjustable.The water band dry ash particle loaded fluid mixed sucks through excavationg pump, after flow meter, completes by pressurization and pumps discharge, and a radioactive density meter also is equipped with in the flow meter front, can measure load fluid density.
By technique scheme, described sand batching counter is measurement gear 5, by sensor and cable, the sediment transport signal is passed to central controller, moment the sand amount and accumulative total sand amount data directly show.
As shown in Figure 2, ash tank car 6 loads the cement dry ash, move successively ash discharging valve and pneumatic operated valve, allow the cement dry ash arrive in the agitation tank of ancient well cement car, water tender is pressed and delivered to clear water in cementing concrete truck and is stirred with the cement dry ash by clear water measuring tank and water jet pump successively simultaneously, has stirred rear formation low-density cement mortar as load fluid; Carry out Density Detection metering feedback result to automatic mulling control system central controller, stop stirring after density is qualified, by the plunger displacement pump force (forcing) pump, pump cement paste to the mulling container 2 of fracturing blender truck.
As shown in Figure 3, bulk cement storage tank 7 is set for loading the cement dry ash in grey tank car 6, bulk cement storage tank 7 two bottom sides all arrange vaporizer 7.1, and air supply system is communicated with vaporizer 7.1 by pneumatic operated valve; Bulk cement storage tank 7 is communicated with vaporizer 7.1 by ash discharging valve; On ash tank car 6, pneumatic control system and manifold assembly also are set, by the rear ejection fluidization of vaporizer 7.1 cement dry ash.The main profit of this process is loaded the compressed air that air compressor machine produces with car, by manifold assembly, air distribution system and gasifier, makes solid carbon dioxide plaster fluidization in tank, utilizes the inside and outside draught head of tank, and material is discharged to storage tank.
A kind of adopt above-mentioned join the sand system automatically join sand technique, it is characterized in that:
At first carry out the cement paste preparation, cement and water are injected respectively to cementing concrete truck from grey tank car 6 and stir and be mixed with low-density cement mortar as load fluid, and detect in real time cement slurry density and feed back to central controller;
Cement paste is injected to fracturing blender truck mulling container 2, and by screw conveyer 4, the quartz sand Stirring is brought in mulling container 2 simultaneously, this process Counter is write down the number of turns that in screw conveyer 4, screw-conveyer-shaft rotates, feed back to central controller and calculate quartz sand content (volume ratio in water, or sand ratio) according to setting program;
Central controller, according to cement slurry density and the quartz sand content (sand ratio) of feedback, determines that whether join sand than reaches setting value, if reach can stablize output operation; Do not continue to adjust according to feedback result the batching needed if reach setting value;
Join after sand completes and stir, by fracturing blender truck, through excavationg pump and pressurization, pump and directly will join mortar and pump into stratum in well.
By technique scheme, join the sand ratio and be set as cement dry ash and quartz sand weight ratio at 1:2.
Join the mechanical automation of sand mode overall process: actual SNC35-16 II type cementing concrete truck and the JSJ5258GXH type ash tank car configuration low-density cement mortar of using is as load fluid; Loaded quartz sand and automatically exported to fracturing blender truck by the sand tank car, cement paste and quartz sand pump into stratum in well after stirring in fracturing blender truck, and electronic monitoring, modulation construction parameter make to construct more scientific reasonable, and quality is secure.Overcome the artificial mix and blend cement+quartz sand of existing technique, the blindness of formation water every construction parameter during as load fluid, chaotic with the metering property.
Laboratory test shows to inject the cement dry ash on stratum and quartz sand weight ratio when 1:2, and sand controlling result is best.Based on this conclusion, calculate the functional relation between cement slurry density and sand ratio by theory, the modulation of parameter during the guide field construction.
With operational discharge capacity, the more senior cementing truck of pump pressure, the Construction traffic upgrading, more easily process accident and Optimizing construction parameter.
This technique is implemented 6 mouthfuls of wells at the scene at present, and construction parameter all meets the geology needs, and effect is better.
Beneficial effect of the present invention is:
Overall process mechanical automation configuration, without artificial transportation, stirring.Greatly alleviate operation labour intensity.
The cement-sand ratio mechanical arrangements, electronic monitoring, more evenly, accurately, construction quality is secure for ratio.
No dust pollution, without dry ash waste, construction environmental protection, energy-conservation.
Above disclosed is only preferred embodiment of the present invention; certainly can not limit with this interest field of the present invention; therefore the equivalence of doing according to the present patent application the scope of the claims changes, as change and the improvement that technological parameter or device are made still belongs to protection scope of the present invention.
Claims (7)
1. a water band dry ash sand artificial borehole wall sand prevention is joined the sand system automatically, it is characterized in that: comprise a measuring truck, one for the grey tank car that loads and unloads cement, one for the cementing concrete truck that cement is made into to cement paste, one for the sand tank car that loads quartz sand, one for cement paste and quartz sand mix and blend being formed to the fracturing blender truck of water band dry ash sand cement slurry, the pressurization pump truck is set after fracturing blender truck, and described force (forcing) pump directly pumps into down-hole formation by water band dry ash sand cement slurry; The mulling container bottom arranged on fracturing blender truck arranges the rotation rabbling mechanism, between mulling container top and sand tank car, is obliquely installed the tubular screw conveyer; On screw-conveyer-shaft, the blade of being made by roll of steel plate is installed in the spiral shell screw conveyer, and the screw conveyer top arranges the sand batching counter; The screw conveyer bottom is stretched between the sand tank car; Screw conveyer carries quartz sand from the bottom to top in the mulling container in the process of Stirring, and the every circle of screw-conveyer-shaft rotates entrained quartz sand body accumulated amount unanimously and can automatically be controlled and measure by the sand batching counter; Screw conveyer is connected with automatic mulling control system, and the mulling control system is contained on measuring truck automatically; The mulling container also is communicated with the cement paste output port of cementing concrete truck; The cement slurry density checkout gear is set on cementing concrete truck; The sand batching counter all is connected with automatic mulling control system central controller with the cement slurry density checkout gear.
2. water band dry ash sand artificial borehole wall sand prevention according to claim 1 is joined the sand system automatically, and it is characterized in that: described sand batching counter is measurement gear.
3. water band dry ash sand artificial borehole wall sand prevention according to claim 1 and 2 is joined the sand system automatically, and it is characterized in that: described rotation rabbling mechanism is the vertical mixing impeller.
4. water band dry ash sand artificial borehole wall sand prevention according to claim 3 is joined the sand system automatically, and it is characterized in that: described system also arranges water tender, and water tender is connected with cementing concrete truck.
5. automatically join the sand system according to claim 1 or 2 or 4 described water band dry ash sand artificial borehole wall sand preventions, it is characterized in that: in described grey tank car, bulk cement storage tank is set, the bulk cement storage tank two bottom sides all arranges vaporizer, and air supply system is communicated with vaporizer by pneumatic operated valve; Bulk cement storage tank is communicated with vaporizer by ash discharging valve; On the ash tank car, pneumatic control system and manifold assembly also are set.
One kind adopt one of the claims described join the sand system automatically join sand technique, it is characterized in that:
At first carry out the cement paste preparation, cement and water are injected respectively to cementing concrete truck from grey tank car and stir and be mixed with low-density cement mortar, and detect in real time cement slurry density and feed back to central controller;
Cement paste is injected to fracturing blender truck mulling container, and by screw conveyer 4, the quartz sand Stirring is brought in the mulling container simultaneously, this process Counter is write down the number of turns that in screw conveyer, screw-conveyer-shaft rotates, and feeds back to central controller and calculates quartz sand content or sand ratio according to setting program;
Central controller, according to cement slurry density and the sand ratio of feedback, determines that whether join sand than reaches setting value, if reach can stablize output operation; Do not continue to adjust according to feedback result the batching needed if reach setting value;
Join after sand completes and stir, by fracturing blender truck, through excavationg pump and pressurization, pump and directly will join mortar and pump into stratum in well.
7. the sand technique of automatically joining according to claim 6 is characterized in that: join the sand ratio and be set as cement dry ash and quartz sand weight ratio at 1:2.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105988394A (en) * | 2015-02-11 | 2016-10-05 | 中国石油化工股份有限公司 | Sand-prevention-data real-time monitoring device |
| CN106089159A (en) * | 2016-08-17 | 2016-11-09 | 中石化石油工程机械有限公司第四机械厂 | One is integrated adds sand mixing pressurization pump truck |
| CN107605427A (en) * | 2017-10-27 | 2018-01-19 | 烟台杰瑞石油装备技术有限公司 | A kind of remote auto discharge capacity and Density Automatic Control System |
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| CN203515512U (en) * | 2013-10-21 | 2014-04-02 | 中国石化江汉油田分公司井下作业处 | Water-dry lime sand artificial borehole wall sand prevention automatic sand mixing system |
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| JPH11114941A (en) * | 1997-10-21 | 1999-04-27 | Takamura Kensetsu Kk | Manufacture of ultra lightweight concrete and ultra lightweight concrete stock to be used therefor |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105988394A (en) * | 2015-02-11 | 2016-10-05 | 中国石油化工股份有限公司 | Sand-prevention-data real-time monitoring device |
| CN106089159A (en) * | 2016-08-17 | 2016-11-09 | 中石化石油工程机械有限公司第四机械厂 | One is integrated adds sand mixing pressurization pump truck |
| CN107605427A (en) * | 2017-10-27 | 2018-01-19 | 烟台杰瑞石油装备技术有限公司 | A kind of remote auto discharge capacity and Density Automatic Control System |
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Application publication date: 20140101 |