CN106640024A - Closed sand mixing device and method - Google Patents

Closed sand mixing device and method Download PDF

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Publication number
CN106640024A
CN106640024A CN201710021365.6A CN201710021365A CN106640024A CN 106640024 A CN106640024 A CN 106640024A CN 201710021365 A CN201710021365 A CN 201710021365A CN 106640024 A CN106640024 A CN 106640024A
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China
Prior art keywords
tank body
sand
liquid
manifold
valve
Prior art date
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Granted
Application number
CN201710021365.6A
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Chinese (zh)
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CN106640024B (en
Inventor
杨延增
宋振云
温哲豪
章东哲
叶文勇
白建文
李前春
聂俊
王玉
李志航
苏伟东
魏小房
方晓军
段成才
曲先伟
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China National Petroleum Corp
CNPC Chuanqing Drilling Engineering Co Ltd
Original Assignee
Engineering Technology Research Institute of CNPC Chuanqing Drilling Engineering Co ltd
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Application filed by Engineering Technology Research Institute of CNPC Chuanqing Drilling Engineering Co ltd filed Critical Engineering Technology Research Institute of CNPC Chuanqing Drilling Engineering Co ltd
Priority to CN201710021365.6A priority Critical patent/CN106640024B/en
Publication of CN106640024A publication Critical patent/CN106640024A/en
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Publication of CN106640024B publication Critical patent/CN106640024B/en
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Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
    • E21B43/25—Methods for stimulating production
    • E21B43/26—Methods for stimulating production by forming crevices or fractures
    • E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/71—Feed mechanisms
    • B01F35/712—Feed mechanisms for feeding fluids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F35/00—Accessories for mixers; Auxiliary operations or auxiliary devices; Parts or details of general application
    • B01F35/75—Discharge mechanisms
    • B01F35/754—Discharge mechanisms characterised by the means for discharging the components from the mixer
    • B01F35/75455—Discharge mechanisms characterised by the means for discharging the components from the mixer using a rotary discharge means, e.g. a screw beneath the receptacle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/919—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings
    • B01F2025/9191—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F25/00—Flow mixers; Mixers for falling materials, e.g. solid particles
    • B01F2025/91—Direction of flow or arrangement of feed and discharge openings
    • B01F2025/919—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings
    • B01F2025/9191—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component
    • B01F2025/919125—Direction of flow or arrangement of feed and discharge openings characterised by the disposition of the feed and discharge openings characterised by the arrangement of the feed openings for one or more flows, e.g. for the mainflow and the flow of an additional component with feed openings in the center and at the circumference of the main flow
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01F—MIXING, e.g. DISSOLVING, EMULSIFYING OR DISPERSING
    • B01F2101/00—Mixing characterised by the nature of the mixed materials or by the application field
    • B01F2101/49—Mixing drilled material or ingredients for well-drilling, earth-drilling or deep-drilling compositions with liquids to obtain slurries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/70—Combining sequestration of CO2 and exploitation of hydrocarbons by injecting CO2 or carbonated water in oil wells

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Accessories For Mixers (AREA)

Abstract

The invention provides a closed sand mixing device. The closed sand mixing device comprises a frame, a tank body arranged in the frame and a main pipe assembly arranged below the tank body. The tank body is a horizontal pressure tank, a gas phase channel is formed in the top of the tank body, a plurality of sand filling ports are formed in the top, a liquid phase channel is formed in the bottom, a plurality of sand outlets are formed in the bottom, a plurality of sand conveying devices are arranged on the inner bottom surface in the tank body, the sand outlets and the sand conveying devices are in one-to-one correspondence, one ends of the sand outlets communicate with outlets of the sand conveying devices while the other ends of the sand outlets communicate with the main pipe assembly, the sand conveying devices are connected to an electric control cabinet, a gas phase discharge pipe assembly is arranged on the upper portion of the tank body, and a gas phase discharge valve is arranged on the gas phase discharge pipe assembly. Liquid carbon dioxide or other liquefied gas and a supporting agent are mixed in a certain proportion and are output in a closed condition under pressure, thereby providing a sand mixing liquid with a certain sand ratio for a fracturing truck.

Description

A kind of closed mixing device and method
Technical field
The invention belongs to underground work fracturing technique field, and in particular to a kind of closed mixing device and method.
Background technology
Low permeable oil and gas reservoirs have low hole, hyposmosis, low abundance, pore throat tiny, the characteristics of strong water blocking damage, adopt at present The extensive hydraulic fracturing technology of aqueous fracturing fluid water blocking damage is big, the row of returning is more difficult.Carbon dioxide dry method sand fracturing skill Art has preferable applicability as one kind of anhydrous fracturing technique to hyposmosis, Low pressure reservoir.The technology can be realized " anhydrous pressure break ", eliminates reservoir water-sensitive and water blocking damage, improves fracturing transformation effect；Fracturing fluid can protect reservoir without residue And supporting crack；Realize the autonomous quickly row of returning.The row's of returning cycle can significantly be shortened；Can promote for shale gas, CBM Fracturing Absorbed natural gas parsing.Additionally, by the recycling to carbon dioxide, can in a large number save fracturing work water, subtract Few routine fracturing work returns discharge opeing and processes workload；The row of returning eliminates liquid waste processing link without waste liquid output after pressure, reduces into This；The comprehensive utilization of CO 2 waste gas, is capable of achieving recycling economy.Especially currently used for tight gas, " the volume pressure of shale gas Split ", usual pressure break scale reaches " thousand side's sand, all places liquid ", and its water-saving result is significant with reduction liquid waste processing.
Core technology in carbon dioxide dry method Sand Fracturing Technology be exactly it is closed it is with pressure under the conditions of by liquid dioxy Change carbon and solid particle（Such as call proppant in the following text）Export after mixing by a certain percentage, therefore, it is titanium dioxide to resolve this problem The key point of carbon dry method Sand Fracturing Technology success.
The content of the invention
It is an object of the invention to provide a kind of closed mixing device, its can it is closed it is with pressure under the conditions of by liquid two Carbonoxide or other liquid gas are exported after mixing by a certain percentage with proppant, for the mulling that fracturing unit truck provides certain sand ratio Liquid.
To reach above-mentioned purpose, the present invention provides following technical scheme：
A kind of closed mixing device, including framework, the tank body in framework and the supervisor below tank body remittance, the tank body For Horizontal pressure tank, gas phase channel is provided with the top of the tank body, top is provided with multiple sand loading mouths, and bottom is provided with liquid channel, Bottom is provided with multiple sand exports, and the tank body inner bottom surface is provided with multiple sand conveying devices, the sand export and sand conveying device one One correspondence, described sand export one end is connected with the outlet of sand conveying device, and the other end is connected with supervisor's remittance, the sand conveying device Electrical control cubicles are connected with, the tank body top is provided with gas phase emission manifold, and the gas phase emission manifold is provided with gas phase emission valve.
The inlet that the supervisor converges is sequentially provided with fluid infusion manifold, flowmeter and differential valve along liquid flow direction, described Fluid infusion manifold is connected with tank body middle part, and the fluid infusion manifold is provided with make-up valve, and the flowmeter, fluid infusion manifold are electric with electrical control cubicles Connection.
The tank body is Moveable horizontal pressurized tank, and the tank body is provided with pressure sensor and temperature sensor, described Tank body is externally provided with heat-insulation layer, and the pressure sensor and temperature sensor are electrically connected with electrical control cubicles.
The tank body top is provided with nitrogen supercharging manifold, and the nitrogen supercharging manifold is provided with nitrogen supercharging valve, the tank Body bottom is provided with liquid phase discharge manifold, and the liquid phase discharge manifold is provided with liquid phase drain valve, the nitrogen supercharging valve, liquid phase discharge Valve is electrically connected with electrical control cubicles.
The gas phase emission manifold, nitrogen supercharging manifold, liquid phase discharge manifold, fluid infusion manifold are connected part with tank body It is provided with filter.
The sand conveying device is sediment transport spiral, and the sediment transport spiral includes helical axis and motor, the spiral axial screw It is made up of to spiral part positive rotation direction spiral part and derotation, the positive rotation direction spiral part and derotation are between spiral part Optical axis is aligned with the sand export, and the motor is electrically connected with electrical control cubicles.
Present invention also offers a kind of closed mulling method, using closed mixing device, comprises the following steps：
Step 1）Pressurising：Proppant is loaded in tank body by sand loading mouth, by the gas phase channel of tank body and carbon dioxide or other The fluid reservoir of gas is communicated, and carries out pressurising, makes the pressure of tank body consistent with liquid storage pressure tank；
Step 2）Cooling：After the pressure of tank body is consistent with liquid storage pressure tank, the gas phase channel of tank body is closed, open the liquid of tank body Phase passage, enters carbon dioxide or other gas liquid phases, opens gas phase emission valve and is exhausted, and tank body and proppant are carried out Cooling；
Step 3）Topping up：Gas phase emission valve is kept to be exhausted, after the completion for the treatment of tank body and proppant cooling, liquid level is gradually increasing, Liquid level stops topping up when rising above sand face height, close gas phase emission valve；
Step 4）Mulling：Simultaneously multiple sand conveying devices are opened, by sand of constructing than setting the sediment transport speed of sand conveying device, according to sediment transport Speed, electrical control cubicles adjust fluid infusion valve opening, make the carbon dioxide or other gas liquid phase volumes that tank body is entered by fluid infusion manifold Consistent with the mulling liquid volume of output tank body, mulling liquid enters fracturing unit truck by the liquid outlet that supervisor converges.
The invention has the beneficial effects as follows：
1. this closed mixing device that the present invention is provided, using horizontal layout, in same isometric(al), reaches equal ompetence bar Under part, can be by setting up sediment transport spiral quantity, the mode for reducing revolution speed of screw improves sediment transport speed, reduces because revolution speed of screw is too high The seal failure for causing；
2. sediment transport spiral adopts Motor drive, under the conditions of the slow-speed of revolution, high pulling torque output, is capable of achieving function of stepless speed regulation, is filling Under conditions of code insurance card device volume, take up room compared with Hydraulic Station little；
3. supervisor converges inlet end and arranges fluid infusion manifold, achievable tank body from inside to outside sediment transport while carry out fluid infusion, differential valve Adjustable aperture size, makes to produce certain pressure reduction with after valve before valve, and then produces certain frictional resistance on supervisor converges, and makes what supervisor converged A part of liquid enters tank body by fluid infusion manifold, reaches the purpose of fluid infusion, and according to spiral sand conveying amount fluid infusion valve opening is adjusted, and makes Amount infused is in a basic balance with sediment transport amount, realizes stable sand ratio.
It is described in further details below in conjunction with accompanying drawing.
Description of the drawings
Fig. 1 is the structural representation of the present invention.
In figure：1st, framework；2nd, tank body；3rd, sand loading mouth；4th, heat-insulation layer；5th, gas phase emission manifold；6th, gas phase emission valve；7、 Gas, liquid floss hole；8th, electrical control cubicles；9th, b motors；10th, liquid phase drain valve；11st, liquid outlet；12nd, b sediment transports spiral；13rd, liquid phase row Put manifold；14th, b sand exports；15th, supervisor converges；16th, a sand exports；17th, a sediment transports spiral；18th, differential valve；19th, flowmeter； 20、 Inlet；21st, make-up valve；22nd, nitrogen supercharging interface；23rd, nitrogen supercharging manifold；24th, a motors；25th, fluid infusion manifold；26th, temperature Sensor；27th, pressure sensor；28th, nitrogen supercharging valve.
Specific embodiment
Embodiment 1：
Present embodiments provide a kind of closed mixing device, including framework 1, the tank body 2 in framework 1 and under tank body 2 Supervisor's remittance 15 of side, the tank body 2 is Horizontal pressure tank, and the top of the tank body 2 is provided with gas phase channel, and top is provided with multiple dresses Sand mouth 3, bottom is provided with liquid channel, and bottom is provided with multiple sand exports, and the inner bottom surface of the tank body 2 is provided with multiple sediment transport dresses Put, the sand export and sand conveying device are corresponded, described sand export one end is connected with the outlet of sand conveying device, the other end and Supervisor's remittance 15 is connected, and the sand conveying device is connected with electrical control cubicles 8, and the top of the tank body 2 is provided with gas phase emission manifold 5, the gas Mutually discharge manifold 5 is provided with gas phase emission valve 6.
Closed mixing device is connected between carbon dioxide fluid reservoir and fracturing unit truck, is loaded in tank body 2 by sand loading mouth 3 Proppant, liquid phase carbon dioxide enters tank body 2 by liquid channel, is formed and entered by sand export by sand conveying device after mulling liquid Supervisor's remittance 15, then enter fracturing unit truck by supervisor's 15 liquid outlets 11 of remittance.
Embodiment 2：
On the basis of embodiment 1, a kind of closed mixing device, the edge of inlet 20 of supervisor's remittance 15 are present embodiments provided Liquid flow direction is sequentially provided with fluid infusion manifold 25, flowmeter 19 and differential valve 18, and the fluid infusion manifold 25 connects with the middle part of tank body 2 Logical, the fluid infusion manifold 25 is provided with make-up valve 21, and the flowmeter 19, fluid infusion manifold 25 are electrically connected with electrical control cubicles 8.
In the present embodiment, the sand conveying device is sediment transport spiral, and the sediment transport spiral includes helical axis and motor, described Spiral axial screw is made up of positive rotation direction spiral part and derotation to spiral part, and the positive rotation direction spiral part and derotation are to spiral shell Optical axis between rotation part is aligned with the sand export, and the motor is electrically connected with electrical control cubicles 8.
Sediment transport spiral adopts the rotation of Motor drive, helical axis to cause material toward correspondence sand export conveying, in slow-speed of revolution bar Under part, high pulling torque output, be capable of achieving function of stepless speed regulation, under conditions of device volume is fully ensured that, take compared with Hydraulic Station empty Between it is little.Supervisor converges 15 liquid feeding ends and arranges fluid infusion manifold 25, be capable of achieving tank body 2 from inside to outside sediment transport while carry out fluid infusion；Differential pressure Valve 18 can adjust aperture size, make to produce certain pressure reduction with after valve before valve, and then produce certain frictional resistance in supervisor's remittance 15, make master A part of liquid of manifold 15 enters tank body 2 by fluid infusion manifold 25, reaches the purpose of fluid infusion.Adjusted according to sediment transport spiral sand conveying amount The section aperture of make-up valve 21, makes amount infused in a basic balance with sediment transport amount, realizes stable sand ratio.
Embodiment 3：
On the basis of embodiment 2, a kind of closed mixing device is present embodiments provided, the top of the tank body 2 is provided with nitrogen increasing Pressure pipe remittance 23, the nitrogen supercharging manifold 23 is provided with nitrogen supercharging valve 28, and the bottom of the tank body 2 is provided with liquid phase discharge manifold 13, liquid phase discharge manifold 13 is provided with liquid phase drain valve 10, and the nitrogen supercharging valve 28, liquid phase drain valve 10 are and electrical control cubicles 8 electrical connections.
Wherein, nitrogen supercharging manifold 23, is capable of achieving Liquid level in work progress, liquid in tank body 2 is replaced after the completion of construction Body, liquid is all discharged, and prevents knot dry ice in tank body 2.
In the present embodiment, gas phase emission manifold 5, nitrogen supercharging manifold 23, liquid phase discharge manifold 13, fluid infusion manifold 25 with Tank body 2 is connected and be partly equipped with filter.By solid particulate filters in tank body 2.
Embodiment 4：
On the basis of previous embodiment, a kind of closed mixing device as shown in Figure 1 is present embodiments provided, in the present embodiment In, sand export has a sand exports 16 and b sand exports 14, is symmetrically distributed in the bottom of tank body 2, and sediment transport spiral is divided into a sediment transports spiral 17, b Sediment transport spiral 12, is symmetrically distributed in the bottom of tank body 2, is driven by a motors 24, b motors 9 respectively, a sediment transports spiral 17, b sediment transport spirals 12 outlet is aligned respectively with a sand exports 16, b sand exports 14, and a sediment transports spiral 17, the rotation of b sediment transports spiral 12 make mulling liquid point Do not convey toward a sand exports 16, b sand exports 14.
Tank body 2 is Moveable horizontal pressurized tank, and tank body 2 is provided with pressure sensor 27 and temperature sensor 26, the tank Body 2 is externally provided with heat-insulation layer 4, pressure sensor 27, temperature sensor 26, a motors 24, b motors 9, flowmeter 19, gas phase emission valve 6th, nitrogen supercharging valve 28, liquid phase drain valve 10, the control signal of make-up valve 21 are connected with electrical control cubicles 8, and by signal teletransmission, Realize remotely control.
Embodiment 5：
A kind of closed mulling method is present embodiments provided, using the closed mixing device of previous embodiment, is comprised the following steps：
Step 1）Pressurising：Proppant is loaded in the tank body 2 by sand loading mouth 3, by the gas phase channel of tank body 2 and carbon dioxide or its He communicates the fluid reservoir of gas, carries out pressurising, makes the pressure of tank body 2 consistent with liquid storage pressure tank；
Step 2）Cooling：After the pressure of tank body 2 is consistent with liquid storage pressure tank, the gas phase channel of tank body 2 is closed, open tank body 2 Liquid channel, enter carbon dioxide or other gas liquid phases, open gas phase emission valve 6 and be exhausted, to tank body 2 and support Agent is cooled down；
Step 3）Topping up：Gas phase emission valve 6 is kept to be exhausted, after the completion for the treatment of tank body 2 and proppant cooling, liquid level gradually goes up Rise, liquid level stops topping up when rising above sand face height, close gas phase emission valve 6；
Step 4）Mulling：Simultaneously multiple sand conveying devices are opened, by sand of constructing than setting the sediment transport speed of sand conveying device, according to sediment transport Speed, electrical control cubicles 8 adjust the aperture of make-up valve 21, make the carbon dioxide or other gas liquids that tank body 2 is entered by fluid infusion manifold 25 Phase volume is consistent with the mulling liquid volume of output tank body 2, and mulling liquid enters fracturing unit truck by the liquid outlet 11 of supervisor's remittance 15.
After the completion for the treatment of pressing crack construction, inlet 20, the valve at the two ends of liquid outlet 11 are closed, connected by nitrogen supercharging interface 22 Logical nitrogen supercharging manifold 23 and liquid nitrogen pump vehicle pipeline, open nitrogen supercharging valve 28, make the Stress control of tank body 2 in safe range, Liquid phase drain valve 10 is opened to certain aperture, discharge opeing is carried out by gas, liquid floss hole 7, until the liquid level of tank body 2 is zero, closed Liquid phase drain valve 10, closes nitrogen supercharging valve 28, opens gas phase emission valve 6 and is exhausted in appropriate aperture, until the pressure of tank body 2 Be zero, so far, it is closed it is with pressure under the conditions of all processes of mulling terminate.
Electrical control cubicles 8 are prior art in the present invention, and method and structure of the various embodiments above without detailed narration belongs to one's own profession The common knowledge of industry, does not describe one by one here.
Exemplified as above is only the illustration to the present invention, does not constitute the restriction to protection scope of the present invention, all It is that design same or analogous with the present invention is belonged within protection scope of the present invention.

Claims (7)

1. a kind of closed mixing device, it is characterised in that：Including framework（1）, located at framework（1）Interior tank body（2）With located at tank Body（2）The supervisor of lower section converges（15）, the tank body（2）For Horizontal pressure tank, the tank body（2）Top is provided with gas phase channel, pushes up Portion is provided with multiple sand loading mouths（3）, bottom is provided with liquid channel, and bottom is provided with multiple sand exports, the tank body（2）Inner bottom surface Multiple sand conveying devices are provided with, the sand export and sand conveying device are corresponded, and described sand export one end goes out with sand conveying device Mouth is connected, and the other end converges with supervisor（15）It is connected, the sand conveying device is connected with electrical control cubicles（8）, the tank body（2）Top It is provided with gas phase emission manifold（5）, the gas phase emission manifold（5）It is provided with gas phase emission valve（6）.
2. a kind of closed mixing device according to claim 1, it is characterised in that：The supervisor converges（15）Inlet （20）Fluid infusion manifold is sequentially provided with along liquid flow direction（25）, flowmeter（19）And differential valve（18）, the fluid infusion manifold （25）With tank body（2）Middle part connection, the fluid infusion manifold（25）It is provided with make-up valve（21）, the flowmeter（19）, fluid infusion manifold （25）And electrical control cubicles（8）Electrical connection.
3. a kind of closed mixing device according to claim 1, it is characterised in that：The tank body（2）For Moveable horizontal Pressurized tank, the tank body（2）It is provided with pressure sensor（27）And temperature sensor（26）, the tank body（2）It is externally provided with insulation Layer（4）, the pressure sensor（27）And temperature sensor（26）And electrical control cubicles（8）Electrical connection.
4. a kind of closed mixing device according to claim 1, it is characterised in that：The tank body（2）Top is provided with nitrogen Supercharging manifold（23）, the nitrogen supercharging manifold（23）It is provided with nitrogen supercharging valve（28）, the tank body（2）Bottom is provided with liquid phase Discharge manifold（13）, the liquid phase discharge manifold（13）It is provided with liquid phase drain valve（10）, the nitrogen supercharging valve（28）, liquid phase row Put valve（10）And electrical control cubicles（8）Electrical connection.
5. a kind of closed mixing device according to claim 2 or 4, it is characterised in that：The gas phase emission manifold（5）、 Nitrogen supercharging manifold（23）, liquid phase discharge manifold（13）, fluid infusion manifold（25）With tank body（2）Is connected the filtration dress that be partly equipped with Put.
6. a kind of closed mixing device according to any one of claim 1-4, it is characterised in that：The sand conveying device is defeated Sand spiral, the sediment transport spiral includes helical axis and motor, the spiral axial screw from positive rotation direction spiral part and derotation to Spiral part is constituted, and the positive rotation direction spiral part and derotation are aligned to the optical axis between spiral part with the sand export, institute State motor and electrical control cubicles（8）Electrical connection.
7. a kind of closed mulling method, using the closed mixing device described in claim 2, it is characterised in that including following step Suddenly：
Step 1）Pressurising：By sand loading mouth（3）In tank body（2）Interior loading proppant, by tank body（2）Gas phase channel and titanium dioxide The fluid reservoir of carbon or other gases is communicated, and carries out pressurising, makes tank body（2）Pressure it is consistent with liquid storage pressure tank；
Step 2）Cooling：Treat tank body（2）Pressure it is consistent with liquid storage pressure tank after, close tank body（2）Gas phase channel, open tank Body（2）Liquid channel, enter carbon dioxide or other gas liquid phases, open gas phase emission valve（6）It is exhausted, to tank body （2）Cooled down with proppant；
Step 3）Topping up：Keep gas phase emission valve（6）It is exhausted, treats tank body（2）After the completion of proppant cooling, liquid level is gradually Rise, liquid level stops topping up when rising above sand face height, close gas phase emission valve（6）；
Step 4）Mulling：Simultaneously multiple sand conveying devices are opened, by sand of constructing than setting the sediment transport speed of sand conveying device, according to sediment transport Speed, electrical control cubicles（8）Adjust make-up valve（21）Aperture, makes by fluid infusion manifold（25）Into tank body（2）Carbon dioxide or its His gas liquid phase volume and output tank body（2）Mulling liquid volume it is consistent, mulling liquid is converged by being responsible for（15）Liquid outlet（11） Into fracturing unit truck.
CN201710021365.6A 2017-01-12 2017-01-12 Closed sand mixing device and method Active CN106640024B (en)

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Cited By (13)

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CN107882542A (en) * 2017-11-30 2018-04-06 北京百利时能源技术股份有限公司 The closed of dry method pressure break continuously adds sand blending tank
CN108166964A (en) * 2017-12-25 2018-06-15 北京百利时能源技术股份有限公司 Dry method pressure break sand grains cools down holding vessel and utilizes its sand grains cooling means
CN108266172A (en) * 2018-03-26 2018-07-10 湖北中油科昊机械制造有限公司 A kind of liquid carbon dioxide conveys DWHSQ-12 type outfits
CN108302324A (en) * 2018-04-02 2018-07-20 中国石油集团川庆钻探工程有限公司工程技术研究院 Liquid carbon dioxide energization frac system and technological process
CN108361554A (en) * 2018-04-02 2018-08-03 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of nitrogen supercharging device and its application method
CN108374655A (en) * 2018-04-02 2018-08-07 中国石油集团川庆钻探工程有限公司工程技术研究院 Liquid carbon dioxide dry method sand fracturing system and technological process
CN108488621A (en) * 2018-04-02 2018-09-04 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of carbon dioxide pressure break cooling back installation and its application process
CN108591814A (en) * 2018-04-02 2018-09-28 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of liquid carbon dioxide storage tank and its application method
CN108915663A (en) * 2018-08-10 2018-11-30 中石化四机石油机械有限公司 A kind of closed mixing device with pressure worked continuously and method
CN109490038A (en) * 2018-12-05 2019-03-19 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of liquid CO2Mixture and viscosity measurements integrated apparatus and method
CN111058822A (en) * 2019-10-28 2020-04-24 中国石油化工股份有限公司 Liquid CO2/N2Two-phase system dry fracturing fluid sand adding system and method
CN113445983A (en) * 2020-03-24 2021-09-28 中国石油化工股份有限公司 Closed sand mixing device and liquid carbon dioxide fracturing method
CN116498278A (en) * 2023-06-27 2023-07-28 大庆信辰油田技术服务有限公司 Carbon dioxide huff and puff injection pump sled

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CN107882542A (en) * 2017-11-30 2018-04-06 北京百利时能源技术股份有限公司 The closed of dry method pressure break continuously adds sand blending tank
CN108166964A (en) * 2017-12-25 2018-06-15 北京百利时能源技术股份有限公司 Dry method pressure break sand grains cools down holding vessel and utilizes its sand grains cooling means
CN108166964B (en) * 2017-12-25 2023-09-19 北京源碳环境股份有限公司 Sand cooling storage tank for dry fracturing and sand cooling method using sand cooling storage tank
CN108266172A (en) * 2018-03-26 2018-07-10 湖北中油科昊机械制造有限公司 A kind of liquid carbon dioxide conveys DWHSQ-12 type outfits
CN108591814B (en) * 2018-04-02 2023-08-18 中国石油天然气集团有限公司 Liquid carbon dioxide storage tank and use method thereof
CN108302324A (en) * 2018-04-02 2018-07-20 中国石油集团川庆钻探工程有限公司工程技术研究院 Liquid carbon dioxide energization frac system and technological process
CN108361554A (en) * 2018-04-02 2018-08-03 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of nitrogen supercharging device and its application method
CN108374655A (en) * 2018-04-02 2018-08-07 中国石油集团川庆钻探工程有限公司工程技术研究院 Liquid carbon dioxide dry method sand fracturing system and technological process
CN108488621A (en) * 2018-04-02 2018-09-04 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of carbon dioxide pressure break cooling back installation and its application process
CN108591814A (en) * 2018-04-02 2018-09-28 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of liquid carbon dioxide storage tank and its application method
CN108302324B (en) * 2018-04-02 2024-01-23 中国石油天然气集团有限公司 Liquid carbon dioxide energized fracturing system and process flow
CN108374655B (en) * 2018-04-02 2023-11-17 中国石油天然气集团有限公司 Liquid carbon dioxide dry sand fracturing system and technological process
CN108915663A (en) * 2018-08-10 2018-11-30 中石化四机石油机械有限公司 A kind of closed mixing device with pressure worked continuously and method
CN109490038A (en) * 2018-12-05 2019-03-19 中国石油集团川庆钻探工程有限公司工程技术研究院 A kind of liquid CO2Mixture and viscosity measurements integrated apparatus and method
CN111058822A (en) * 2019-10-28 2020-04-24 中国石油化工股份有限公司 Liquid CO2/N2Two-phase system dry fracturing fluid sand adding system and method
CN113445983B (en) * 2020-03-24 2022-12-16 中国石油化工股份有限公司 Closed sand mixing device and liquid carbon dioxide fracturing method
CN113445983A (en) * 2020-03-24 2021-09-28 中国石油化工股份有限公司 Closed sand mixing device and liquid carbon dioxide fracturing method
CN116498278A (en) * 2023-06-27 2023-07-28 大庆信辰油田技术服务有限公司 Carbon dioxide huff and puff injection pump sled
CN116498278B (en) * 2023-06-27 2023-09-05 大庆信辰油田技术服务有限公司 Carbon dioxide huff and puff injection pump sled

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