CN203515512U - Water-dry lime sand artificial borehole wall sand prevention automatic sand mixing system - Google Patents

Water-dry lime sand artificial borehole wall sand prevention automatic sand mixing system Download PDF

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Publication number
CN203515512U
CN203515512U CN201320651016.XU CN201320651016U CN203515512U CN 203515512 U CN203515512 U CN 203515512U CN 201320651016 U CN201320651016 U CN 201320651016U CN 203515512 U CN203515512 U CN 203515512U
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China
Prior art keywords
sand
truck
cement
automatically
water
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Expired - Fee Related
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CN201320651016.XU
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Chinese (zh)
Inventor
黄永刚
杨桂林
钱勇
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UNDERGROUND OPERATIONS DIVISION CHINA PETROCHEMICAL JIANGHAN OILFIELD BRANCH
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UNDERGROUND OPERATIONS DIVISION CHINA PETROCHEMICAL JIANGHAN OILFIELD BRANCH
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Priority to CN201320651016.XU priority Critical patent/CN203515512U/en
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Abstract

The utility model relates to a water-dry lime sand artificial borehole wall sand prevention automatic sand mixing system. The water-dry lime sand artificial borehole wall sand prevention automatic sand mixing system comprises a sand tank truck, a well cementation cement truck, a sand tank, a measuring truck and a sand mixing truck, wherein a rotary stirring mechanism is arranged at the bottom of a sand mixing container which is arranged on the sand mixing truck; a spiral sand conveying system is mounted at the upper part of the sand mixing container; a spiral sand conveyor auger mechanism extends into a sand hopper and is used for conveying quartz sand poured into the sand hopper by the sand tank in a process of rotationally stirring into the sand mixing container from top to bottom; the volume of the quartz sand carried by the auger can be automatically controlled and metered; and the sand mixing container is communicated with a cement paste output port of the well cementation cement truck. Mechanical automation configuration is performed in the overall process; mixing and stirring are even; and manual transportation and stirring are not required, so that the labor strength of operation is greatly reduced and the dust is prevented from flying outwards to pollute the environment.

Description

Water band dry ash sand artificial borehole wall sand prevention is joined sand system automatically
Technical field
The utility model belongs to 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 ground mix in proportion, water is taken to down-hole, clamp-ons outside sleeve pipe, is piled up in 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 having 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 to the cornea of also can burning in eyes (once occurred overdrying sand-lime burn eyes accident), and the most original this rough form of construction work utmost point is unfavorable for that employee is physically and mentally healthy.
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 the cementing strength of artificial borehole wall, in-place permeability, thereby affects sand controlling result.If cement amount is on the low side, the artificial borehole wall forming 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.After the anti-construction of Chang Youshui completes, do not guard against the success of sand or sand control but phenomenon that stratum note is not intake occurs, have much relations with the ratio of dry ash sand is inhomogeneous.
While 3, adding dry ash sand, do not measure the device of sand ratio, can only simply according to the height of operation pressure, determine to add sand speed, fuzzy sand ratio, affects sand controlling result.
If 4, run into pipe plug or strata pressure is too high in construction, 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.
Utility model content
The technical problems to be solved in the utility model is: provide a kind of water band dry ash sand artificial borehole wall sand prevention automatically to join sand system, join sand ratio more evenly, accurately, and improve the construction technology falling behind, can significantly reduce labor strength, reduce environment pollution, improve construction quality.
For solving the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of water band dry ash sand artificial borehole wall sand prevention is joined sand system automatically, it is characterized in that: comprise a measuring truck, one for the grey tank car, that load and unload cement for the cementing concrete truck, that cement are made into cement paste for the sand tank car, that load quartz sand for cement paste and quartz sand mix and blend being formed to the fracturing blender truck of water band dry ash sand cement slurry, 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 arranging on fracturing blender truck arranges rotation rabbling mechanism, between mulling container top and sand tank car, is obliquely installed tubular screw conveyer; In spiral shell screw conveyer, on screw-conveyer-shaft, the blade of being made by roll of steel plate is installed, and screw conveyer top arranges sand batching counter; Screw conveyer bottom is stretched between sand tank car; Screw conveyer is set in the process of Stirring, quartz sand be carried in mulling container from the bottom to top, and the every circle of screw-conveyer-shaft rotates entrained quartz sand body accumulated amount unanimously and can automatically be controlled and measure by sand batching counter; Screw conveyer is connected with automatic mulling control system, and mulling control system is contained on measuring truck automatically; Mulling container is also communicated with the cement paste output port of cementing concrete truck; Cement slurry density checkout gear is set on cementing concrete truck; Sand batching counter is all connected with automatic mulling control system central controller with cement slurry density checkout gear.
By technique scheme, described sand batching counter is measurement gear.
By technique scheme, described rotation rabbling mechanism is 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, 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 ash tank car, pneumatic control system and manifold assembly are also 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 weaving 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.
Adopt above-mentioned join sand system automatically join sand technique, it is characterized in that:
First carry out 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, quartz sand Stirring is brought in 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 reached, can stablize output operation; If reach setting value, according to feedback result, do not continue to adjust the batching needing;
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 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 utility model and process advantage are embodied in:
Overall process mechanical automation configuration, without artificial transportation, stirring, greatly alleviates operation labour intensity.
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.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the utility model is described in further detail with each embodiment.
Fig. 1 is that water band dry ash sand artificial borehole wall sand prevention of the present utility model is joined sand main structure of system schematic diagram automatically.
Fig. 2 is that the utility model water band dry ash sand artificial borehole wall sand prevention is automatically joined sand system and cement is made into 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 utility model is joined 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 utility model is joined sand system automatically.
The specific embodiment
Below in conjunction with accompanying drawing and example, the utility model is described in further detail.
The water band dry ash sand artificial borehole wall sand prevention of implementing according to the utility model is joined sand system as Figure 1-4 automatically, comprise a measuring truck, at least one for the grey tank car 6, that load and unload cement for the cementing concrete truck, that cement are made into cement paste for the sand tank car 1, that load quartz sand for cement paste and quartz sand mix and blend being formed to the fracturing blender truck of water band dry ash sand cement slurry, 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 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 mulling control system is contained on measuring truck automatically; Mulling container 2 is also communicated with the cement paste output port of cementing concrete truck; Cement slurry density checkout gear is set on cementing concrete truck; Sand batching counter is all connected with automatic mulling control system central controller with 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 weaving in advance.
The mulling container 2 arranging on fracturing blender truck adopts the structure of pot-in-pot, guarantees that mortar mixes completely continuously, prevents inhomogeneous composite mortar.And the surface area of inner chamber is larger, can soaks into quartz sand completely and avoid producing bubble.Vertical mixing impeller 3 is arranged on the center of blending tank, can completely constantly mortar be stirred into homogeneous mixed liquor, at intracavity bottom outlet opening, to discharging between sand pump, reduce and produce gas to greatest extent, vertical mixing impeller 3 rotating speeds are controlled by the potentiometer being contained on instrument desk, and speed is adjustable.The water band dry ash particle loaded fluid mixing sucks through excavationg pump, after flow meter, completes by pressurization and pumps discharge, a radioactive density meter is also housed before flow meter, can measure load fluid density.
By technique scheme, described sand batching counter is measurement gear 5, by sensor and cable, sediment transport signal is passed to central controller, moment sand amount and accumulative total sand amount data directly show.
As shown in Figure 2, ash tank car 6 loads cement dry ash, move successively ash discharging valve and pneumatic operated valve, allow 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 stirs with 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, after density is qualified, stop stirring, by 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 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 are also 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.
Adopt above-mentioned join sand system automatically join a sand technique, it is characterized in that:
First carry out 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, 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 reached, can stablize output operation; If reach setting value, according to feedback result, do not continue to adjust the batching needing;
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 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; By sand tank car, loaded quartz sand and automatically exported to fracturing blender truck, 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 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, by theory, calculate the functional relation between cement slurry density and sand ratio, the modulation of parameter during guide field construction.
With operational discharge capacity, the more senior cementing truck of pump pressure, Construction traffic upgrading, more easily processes accident and Optimizing construction parameter.
This technique is implemented 6 mouthfuls of wells at the scene at present, and construction parameter all meets geology needs, and effect is better.
The beneficial effects of the utility model are:
Overall process mechanical automation configuration, without artificial transportation, stirring.Greatly alleviate operation labour intensity.
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 utility model; certainly can not limit with this interest field of the utility model; therefore the equivalence of doing according to the utility model claim changes, as change and improvement that technological parameter or device are made still belong to protection domain of the present utility model.

Claims (5)

1. a water band dry ash sand artificial borehole wall sand prevention is joined sand system automatically, it is characterized in that: comprise a measuring truck, one for the grey tank car, that load and unload cement for the cementing concrete truck, that cement are made into cement paste for the sand tank car, that load quartz sand for cement paste and quartz sand mix and blend being formed to the fracturing blender truck of water band dry ash sand cement slurry, 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 arranging on fracturing blender truck arranges rotation rabbling mechanism, between mulling container top and sand tank car, is obliquely installed tubular screw conveyer; In spiral shell screw conveyer, on screw-conveyer-shaft, the blade of being made by roll of steel plate is installed, and screw conveyer top arranges sand batching counter; Screw conveyer bottom is stretched between sand tank car; Screw conveyer is set in the process of Stirring, quartz sand be carried in mulling container from the bottom to top, and the every circle of screw-conveyer-shaft rotates entrained quartz sand body accumulated amount unanimously and can automatically be controlled and measure by sand batching counter; Screw conveyer is connected with automatic mulling control system, and mulling control system is contained on measuring truck automatically; Mulling container is also communicated with the cement paste output port of cementing concrete truck; Cement slurry density checkout gear is set on cementing concrete truck; Sand batching counter is all connected with automatic mulling control system central controller with cement slurry density checkout gear.
2. water band dry ash sand artificial borehole wall sand prevention according to claim 1 is joined sand system automatically, 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 sand system automatically, it is characterized in that: described rotation rabbling mechanism is vertical mixing impeller.
4. water band dry ash sand artificial borehole wall sand prevention according to claim 3 is joined sand system automatically, it is characterized in that: described system also arranges water tender, and water tender is connected with cementing concrete truck.
5. according to the water band dry ash sand artificial borehole wall sand prevention described in claim 1 or 2 or 4, automatically join sand system, it is characterized in that: in described grey tank car, bulk cement storage tank is set, 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 ash tank car, pneumatic control system and manifold assembly are also set.
CN201320651016.XU 2013-10-21 2013-10-21 Water-dry lime sand artificial borehole wall sand prevention automatic sand mixing system Expired - Fee Related CN203515512U (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485748A (en) * 2013-10-21 2014-01-01 中国石化江汉油田分公司井下作业处 Automatic sand mixing system and automatic sand mixing process for water-dry lime sand mixed artificial borehole wall sand protection
CN104110239A (en) * 2014-07-08 2014-10-22 中国石油天然气股份有限公司 Sand adding and mixing device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103485748A (en) * 2013-10-21 2014-01-01 中国石化江汉油田分公司井下作业处 Automatic sand mixing system and automatic sand mixing process for water-dry lime sand mixed artificial borehole wall sand protection
CN104110239A (en) * 2014-07-08 2014-10-22 中国石油天然气股份有限公司 Sand adding and mixing device
CN104110239B (en) * 2014-07-08 2016-08-24 中国石油天然气股份有限公司 Add sand mixing device

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Granted publication date: 20140402

Termination date: 20141021

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