CN103726821B - Acidizing and fracturing fluid continuous mixture feeder - Google Patents

Acidizing and fracturing fluid continuous mixture feeder Download PDF

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Publication number
CN103726821B
CN103726821B CN201410008693.9A CN201410008693A CN103726821B CN 103726821 B CN103726821 B CN 103726821B CN 201410008693 A CN201410008693 A CN 201410008693A CN 103726821 B CN103726821 B CN 103726821B
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mixed cell
deflector
clear water
thickening agent
liquid
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CN103726821A (en
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李磊
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BEIJING DIVINE EXCELLENCE PETROLEUM TECHNOLOGY Co Ltd
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BEIJING DIVINE EXCELLENCE PETROLEUM TECHNOLOGY Co Ltd
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Abstract

The invention discloses a kind of acidizing and fracturing fluid continuous mixture feeder.This device includes: clear water input block, supplies clear water for quantitative constant speed;First mixed cell, is connected with clear water input block, for mixing thickening agent and from the clear water of described clear water input block to obtain thickening agent premixed solution;Overall mixed cell, is connected with described first mixed cell, is used for mixing described thickening agent premixed solution, acid solution and various liquid additive to obtain acidizing and fracturing fluid;Lotion unit, is connected with described overall mixed cell, for discharging from the acidizing and fracturing fluid of described overall mixed cell.The mixing arrangement using the present invention is capable of the continuous mixture feed of water, acid solution, dry powder or mastic and various liquid additive, good mixing effect, and mixture is uniform, and acid solution quality is high;It addition, the realization of continuous automatic acid supplier, reduce a large amount of cost of labor, reduce the demand to acid storage tank, saved construction liquid, save equipment cost.

Description

Acidizing and fracturing fluid continuous mixture feeder
Technical field
The present invention relates to oil gas field acid fracturing construction dosing Technology field, in particular it relates to a kind of Acidizing and fracturing fluid continuous mixture feeder.
Background technology
Acid fracturing is carbonatite, the maximally effective well stimulation of complex lithology fractured reservoir.Acid fracturing Liquid quality height directly determines to improve the quality of stratum permeability, and acidizing and fracturing fluid main component includes salt Acid, Fluohydric acid., thickening agent (polyacrylamide), corrosion inhibiter, cleanup additive, surfactant etc., In acidizing treatment, need in advance by all material mix homogeneously, and the key technology restricting acidizing treatment is The continuous mixture of acid solution.
The mixture of acidizing and fracturing fluid all uses traditional mode at present, the most manually calculates, weighs, Again concentrated acid, clear water and various additive are injected in fluid reservoir, entered by the artificial scene simple device that combines Row circulation complex acid, it is achieved the uniform mixture of acid solution.There is a lot of problem in this mode, mainly has: (1) Owing to acidizing and fracturing fluid demand is big, batch (-type) dosing, need substantial amounts of acid storage tank, fracturing unit cost High;(2) complex acid process needs more manual operation, and the labor intensity of field personnel is big;(3) The concentrated hydrochloric acid used in complex acid and Fluohydric acid. all have stronger volatility and corrosivity, and on-the-spot existence is a lot Potential safety hazard;(4) because there being a lot of uncertain factor in construction, after first dosing, construction often leads to residue The waste of liquid;(5) acid fracturing fluid viscosity is relatively big, acid solution difficulty of transportation, mixes at acidizing and fracturing fluid During joining, material mixing uses centrifugal pump to play circulation in pipeline is connected to acid fracturing flow container and reach Between different material when uniformly mixing, acidizing and fracturing fluid complicated component, need add material viscosity, Density, pH value etc. are the most different, and particularly thickening agent viscosity is relatively big, often use pump circulation hybrid mode Can not get uniform mixture, and substantial amounts of high viscosity acid solution requires that centrifugal pump has big discharge capacity and height Lift, the power needing pump is high, thus has that energy consumption height, incorporation time length, equipment investment are big etc. asks Topic, it is impossible to realize continuous mixture, operating cost is high.
Along with the development of fracturing technology, it is raw that traditional interval complex acid mode the most gradually can not meet acid fracturing Produce requirement, at present, domestic there is no this acidizing and fracturing fluid continuous mixture feed with actual application value Device.
Summary of the invention
For the defect of prior art, it is an object of the invention to provide a kind of continuous mixture of acidizing and fracturing fluid Feeder.This device is applicable to acid fracturing scene and prepares acid solution continuously, and acid solution automatically configures continuously, Acid solution i.e. joins i.e. use, reduce the use of acid solution surge tank to greatest extent, it is to avoid acid solution waste, effectively drops Low acid fracturing cost;The acidizing and fracturing fluid quality of this device preparation is good, and acid liquid viscosity is uniform, anhydrous bag Powder phenomenon.
To achieve these goals, present invention employs techniques below scheme:
A kind of acidizing and fracturing fluid continuous mixture feeder, including:
Clear water input block, supplies clear water for quantitative constant speed;
First mixed cell, is connected with described clear water input block, for mixed powder or paste body shape thickening Agent and from the clear water of described clear water input block to obtain thickening agent premixed solution;
Overall mixed cell, is connected with described first mixed cell, is used for mixing described thickening agent pre-miscible Liquid, acid solution and various liquid additive are to obtain acidizing and fracturing fluid;
Lotion unit, is connected with described overall mixed cell, for by from described overall mixed cell Acidizing and fracturing fluid is discharged.
In said apparatus, as a kind of preferred implementation, described overall mixed cell is by the second mixing Unit, the 3rd mixed cell, the 4th mixed cell composition;Wherein:
Second mixed cell, is connected with described first mixed cell, for preliminary mix acid liquor, various liquid Body additives and the thickening agent premixed solution from described first mixed cell;
3rd mixed cell, is connected with described second mixed cell, for further mixing from described the The liquid of two mixed cells;
4th mixed cell, is connected with described 3rd mixed cell, for final overall mixing from described The liquid of the 3rd mixed cell is to obtain acidizing and fracturing fluid.In said apparatus, it is preferable to carry out as one Mode, described device also includes:
Thickening agent charging metering units, is connected with described first mixed cell, for quantitative constant speed to described First mixed cell supply dry powder or paste body shape thickening agent;
Acid solution charging metering units, is connected with described second mixed cell, for quantitative constant speed to described the Two mixed cell conveying acid solutions;
Liquid additive charging metering units, be connected with described second mixed cell, for quantitative constant speed to Described second mixed cell carries various liquid additives.
In said apparatus, as a kind of preferred implementation, described clear water input block is also with described the Two mixed cells connect, for quantitative constant speed to described second mixed cell conveying clear water;The most described institute State clear water input block to be connected with described overall hybrid system or the 4th mixed cell, to supply clear water.
In said apparatus, as a kind of preferred implementation, described second mixed cell be one section common Pipeline;Described 3rd mixed cell is common pipeline or pipeline static mixer.
In said apparatus, as a kind of preferred implementation, described 4th mixed cell is blending tank, Including: tank body, top is provided with inlet, and bottom is provided with liquid outlet;First deflector, for being inverted truncation Circular cone build, including big peristome and little peristome, is arranged at the top of described tank body and enters described in being positioned at The lower section of liquid mouth, so that the liquid from inlet forms whirlpool on the inner side conical surface of described first deflector Vortex-like and from described first deflector little peristome flows downward out;Second deflector, for circular cone build, It is arranged at the middle part of described tank body, so that the liquid from described first deflector little peristome outflow is scattering into Flow downwards on the outside conical surface of described second deflector and along the outside conical surface of described second deflector; 3rd deflector, for being inverted truncated cones build, including big peristome and little peristome, is arranged at described The bottom of tank body, so that along the liquid under conical flow outside described second deflector in the 3rd deflector Form swirling on the conical surface of side and the little peristome from described 3rd deflector flows downward out.Preferably, institute The edge at the edge and the described 3rd big peristome of deflector of stating the first big peristome of deflector is both secured to On the sidewall of described tank body;Space is left between the sidewall of described second deflector and described tank body, so that from Outside described second deflector, the liquid under conical flow is scattered to the inner side conical surface of described 3rd deflector, Described second deflector is fixed on the sidewall of described tank body by support.It is highly preferred that the described 4th mixes It is provided with liquid level monitoring device in closing the tank body of unit.
In said apparatus, as a kind of preferred implementation, described device also includes PLC control Unit (programmable logic controller (PLC)), is connected with described thickening agent charging metering units, and described PLC is controlled The blanking amount of thickening agent is adjusted by unit processed according to the water set and thickening agent ratio, to realize automatically Quantitatively constant speed feeding;Described PLC control unit is connected, according to setting with described acid solution charging metering units Various acid solution ratios, adjust various acid solution input quantity and input speed;Described PLC control unit with Described liquid additive charging metering units connects, and according to the formula proportion of various liquid additives, adjusts The input quantity of various liquid additives and input speed;Described PLC control unit also controls the first mixing list The quantity that carries to the second mixed cell of dry powder premixed solution of unit and speed.Described PLC control unit is also It is connected with described clear water input block, in order to automatically adjust clear water input quantity and flow velocity reaches setting. Preferably, described PLC control unit is also with the liquid level monitoring device in described 4th mixed cell tank body even Connect, according to the result of liquid level monitoring device feedback, adjust the lotion amount of described lotion unit.
In said apparatus, as a kind of preferred implementation, described thickening agent charging metering units, Acid solution charging metering units, liquid additive charging metering units, clear water input block, the first mixing list Unit, the second mixed cell, the 3rd mixed cell, the 4th mixed cell, lotion unit and control unit peace It is loaded at least one transport carrier.It is highly preferred that described transport carrier is flat bed trailer.
In said apparatus, described thickening agent be polyacrylamide, type methylene polyacrylamide, poly-third Olefin(e) acid sodium, guar gum, hydroxypropyl guar gum, Carboxymethyl hydroxypropyl guar, sesbania gum, fenugreek gum, One or many in Konjac glucomannan, carboxymethyl cellulose, hydroxyethyl cellulose and carboxymethyl hydroxyethyl cellulose Kind.Described acid solution is hydrochloric acid or/and Fluohydric acid..Described various liquid additive includes corrosion inhibiter, iron ion Stabilizer, surfactant, clay stabilizer, mutual solvent, foaming agent, antibacterial, temperature stability agent With PH regulator, the addition of various liquid additives accounts for the 0.5-20% of acidizing and fracturing fluid total amount.Excellent Selection of land, described antibacterial is one or more in glutaraldehyde, chlorobenzene oxide and season ammoniate;Institute Stating clay stabilizer is inorganic salts stabilizer, more preferably sodium chloride, potassium chloride, ammonium chloride, chlorination One or more in calcium and magnesium chloride;Described temperature stability agent be sodium thiosulfate, sodium sulfite and One or more in triethanolamine;Described PH regulator be acetic acid, citric acid, sodium sulfite, Fumaric acid, sulfamic acid, hydrochloric acid, nitric acid, sodium dihydrogen phosphate two water, sodium bicarbonate, sodium carbonate, hydrogen One or more in sodium oxide, potassium carbonate and magnesium oxide.Described thickening agent consumption accounts for described acid fracturing The 0.01-5% of liquid gross mass, described acid solution accounts for the 0.05-40% of described acidizing and fracturing fluid gross mass.
Beneficial effects of the present invention: (1) uses assembly of the invention to be capable of water, acid solution, dry powder Or mastic and the continuous mixture feed of various liquid additive, good mixing effect, mixture uniformly (acid Liquid overall viscosity is uniform, without lamination), acid solution quality is high (proportioning is accurate);(2) the most certainly The realization of dynamic complex acid, reduces a large amount of cost of labor, reduces the demand to acid storage tank, has saved construction liquid, Save equipment cost;(3) whole device uses automatic control unit to realize automatization, simple to operate, Complex acid precision is controlled, and safety is high, can need quantitative complex acid according to scene, and not waste material;(4) Skid-mounted structure, can be placed on a truck, it is simple to transport, uses motility high.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of a kind of acidizing and fracturing fluid continuous mixture feeder that the present invention provides;
Fig. 2 is the structural representation of the 4th i.e. blending tank of mixed cell in apparatus of the present invention;
Fig. 3 is the first deflector and the structural representation of the 3rd deflector in Fig. 2 blending tank;
Fig. 4 is the structural representation of the second deflector in Fig. 2 blending tank;
Wherein, description of reference numerals is as follows: 1, PLC control unit, 2, thickening agent charging metering units, 3, acid solution charging metering units, 4, liquid additive charging metering units, 5, clear water input block, 6, First mixed cell, the 7, the 4th mixed cell (blending tank), 71, tank body, the 72, first deflector Or the 3rd deflector, 721, big peristome, 722, little peristome, 723, the inner side conical surface, 73, Two deflectors, 731, the outside conical surface, the 74, the 3rd deflector, 75, inlet, 76, liquid outlet, 77, support, the 8, the 3rd mixed cell, the 9, second mixed cell, 10, lotion unit
Detailed description of the invention
For making the object, technical solutions and advantages of the present invention clearer, below will be to embodiment party of the present invention Formula is described in further detail.
See Fig. 1, the schematic diagram of its acidizing and fracturing fluid continuous mixing device provided for the embodiment of the present invention, This device includes: PLC control unit 1, thickening agent feed metering units 2, acid solution feeds metering units 3, Liquid additive charging metering units 4, clear water input block the 5, first mixed cell the 6, the 4th mixing list Unit (blending tank) the 7, the 3rd mixed cell 8, second mixed cell 9, lotion unit 10, said units It is mountable on a flat bed trailer.Below above-mentioned parts are illustrated one by one.
Thickening agent charging metering units 2, is connected with the first mixed cell 6, for the first mixed cell 6 quantitative constant speed supply dry powder or paste body shape thickening agents.In this embodiment, thickening agent charging metering units 2 include screw feed metering device, its can quantitatively constant speed feeding to the first mixed cell 6.
Clear water input block 5, is connected with the first mixed cell 6 and the second mixed cell 9, for the One mixed cell 6 and the second mixed cell 9 quantitative constant speed conveying clear water.In this embodiment, clear water is defeated Enter two flow transducers that unit 5 includes two water pumps, is respectively arranged on two exit of pump pipelines And two ratio adjusting valves, each water pump is from external suction clear water, the flow transducer in corresponding pipeline And pump into after ratio adjusting valve in described first mixed cell 6 and the second mixed cell 9.
First mixed cell 6, is connected with the second mixed cell 9, for mixing from thickening agent feed charging meter The amount dry powder of unit 2 or paste body shape thickening agent and from the clear water of clear water input block 5 to obtain thickening agent Premixed solution.In this embodiment, the first mixed cell 6 is the common mixing with mechanical stirring device Device, it addition, be also provided with dosing pump between the first mixed cell 6 and the second mixed cell 9, uses The quantity of thickening agent premixed solution is inputted to the second mixed cell 9 in measuring and controlling the first mixed cell 6 And speed.
Acid solution charging metering units 3, is connected with the second mixed cell 9, mixes to second for quantitative constant speed Closing unit 9 and carry acid solution, in this embodiment, acid solution is two kinds i.e. hydrochloric acid and Fluohydric acid., so acid solution Charging metering units 3 includes 2 acid-proof pumps, be arranged on 2 acid-proof pump export pipelines 2 acidproof Flow transducer and 2 acidproof flow control valves, 2 acid-proof pumps are respectively used to pump into hydrochloric acid and Fluohydric acid., According to the ratio of hydrochloric acid Yu Fluohydric acid., the corresponding acid-proof pump selecting different flow, hydrochloric acid and Fluohydric acid. divide Do not adjusted from external suction, acidproof flow transducer and acidproof flow on respective pipeline by respective acid-proof pump The second mixed cell 9 is pumped into after joint valve.
Liquid additive charging metering units 4, be connected with the second mixed cell 9, for quantitative constant speed to Second mixed cell 9 carries various liquid additive, and in this embodiment, various liquid additives are slow Erosion agent, ferrous stability, surfactant, clay stabilizer, mutual solvent and foaming agent, so liquid Body additives charging metering units 4 includes that 6 dosing pumps and liquid add manifold, and all kinds of liquid additives are through each Self-measuring pump and liquid add manifold and are input to the second mixed cell 9.
Second mixed cell 9, is connected with the 3rd mixed cell 8, inputs from clear water for preliminary mixing The clear water of unit 5, from the thickening agent premixed solution of the first mixed cell 6, from acid solution charging metering The various acid solutions of unit 3 and the various liquid additives from liquid additive charging metering units 4. In this embodiment, the second mixed cell 9 is only one section of common pipeline.
3rd mixed cell 8, is connected with the 4th mixed cell 7, mixes from second for mixing further Closing the liquid of unit 9, in this embodiment, the 3rd mixed cell 8 is preferably commercially available SX type pipeline Static mixer, it is also possible to as the second mixed cell 9, is one section of common pipeline.It practice, also Can dispense second and third mixed cell, and the thickening agent from the first mixed cell premix liquid, From the various acid solutions of acid solution charging metering units 3 and from liquid additive charging metering units 4 Various liquid additives (including the clear water from clear water input block 5 if desired) are directly added simultaneously to In 4th mixed cell.
4th mixed cell 7, is connected with lotion unit 10, for final overall mixing from the 3rd mixing The liquid of unit 8 is to finally give acidizing and fracturing fluid.In this embodiment, the knot of the 4th mixed cell 7 Structure sees Fig. 2, including: tank body the 71, first deflector the 72, second deflector the 73, the 3rd deflector 74, each parts of the 4th mixed cell 7 are said by inlet 75 and liquid outlet 76 etc. below one by one Bright.
Tank body 71, generally has the columnar tank of hollow structure, and the sidewall of its middle and upper part is provided with feed liquor Mouth 75, the tank bottoms liquid outlet 76 that is provided with of bottom, inlet 76 is connected with the liquid outlet of the 3rd mixed cell.
First deflector 72, sees Fig. 2 and 3, (is also referred to as inverted for being inverted truncated cones build " loudspeaker " type), be arranged at tank body 71 top and be positioned at the lower section of inlet 75, including big opening Portion 721 and little peristome 722, liquid tangentially enters blending tank 7 top from inlet 75, from Big peristome 721 falls on the inner side conical surface 723 of the first deflector 72, and conical surface 723 inside this Upper formation swirling, thus reach the first time mixing in blending tank 7, through the liquid of mixing for the first time Peristome 722 flows downwardly on the outside conical surface 731 of the second deflector 73 from childhood.First deflector 72 By welding or the mode such as hinged, the edge of big peristome 721 can be fixed on the sidewall of tank body 71; But it is not limited to above mode, in order to reinforce the first deflector 72, it is also possible to fix as follows One deflector 72: first the first deflector 72 is fixed on a support, first will be fixed with the most again The support of deflector 72 is fixed on the sidewall of tank body 71 by welding or the mode such as hinged.
Second deflector 73, sees Fig. 2 and Fig. 4, for circular cone build (also referred to as " canopy " type), It is arranged at the middle part of tank body 71, is scattering into second from the liquid of the first deflector 72 little peristome outflow and leads Stream plate the outside conical surface 731 on, then liquid along the second deflector 73 the outside conical surface 731 downwards Flow and be scattered to the inner side conical surface of the 3rd deflector 74;Second deflector 73 and tank body 71 sidewall it Between leave space, so that the liquid that the conical surface 731 flows down outside the second deflector is scattered to the 3rd deflector On the inner side conical surface of 74, the second deflector 73 is fixed on the sidewall of tank body 71, also by support 77 That is, first the second deflector 73 is welded on a support, the most again this support is welded in tank On the sidewall of body 71.
3rd deflector 74, sees Fig. 2 and 3, and its structure is identical with the first deflector 72, for being inverted Truncated cones build, including big peristome and little peristome, but it is arranged at the bottom of tank body 71, with Make the liquid that the conical surface 731 flows down outside the second deflector 73 on the inner side conical surface of the 3rd deflector 74 Forming swirling, thus reach the second time mixing in blending tank 7, the liquid through mixing for the second time is certainly The little peristome of the 3rd deflector 74 flows downwardly to the bottom of blending tank 7.3rd deflector 74 can lead to Cross welding or the edge of its big peristome is fixed on the sidewall of tank body 71 by the mode such as hinged;But no It is limited to upper type, in order to reinforce the 3rd deflector 74, it is also possible to fix the 3rd water conservancy diversion as follows Plate 74: be first fixed on a support by the 3rd deflector 74, will be fixed with the 3rd deflector the most again The support of 74 is fixed on the sidewall of tank body 71 by welding or the mode such as hinged.
It is also provided with liquid level monitoring device in the tank body 71 of blending tank 7.
The operation principle of this blending tank 7: the liquid entered from inlet tangentially enters on blending tank On the inner side conical surface of the first deflector that portion is set to down " loudspeaker " type, fluid shape on the conical surface inside this Becoming swirling to carry out in-tank mixing for the first time, the fluid of eddy current shape, after mixing for the first time, falls into setting On the outside conical surface for second deflector of " canopy " type, liquid is tangentially scattered along cone-shaped outside this Shape flows into third layer deflector, and third layer deflector is still set to down " loudspeaker " type, and fluid is again the On the inner side conical surface of three deflectors, formation swirling is to carry out second time in-tank mixing, subsequently at the bottom of tank body Portion, tank base space is bigger, it is ensured that pot liquid is sufficient.
Lotion unit 10, for discharging the acidizing and fracturing fluid from the 4th mixed cell 7.In this enforcement In example, lotion unit 10 includes lotion pump, and acidizing and fracturing fluid is pumped out by lotion pump.
PLC control unit 1, i.e. programmable logic controller (PLC), be connected with thickening agent charging metering units 2, To thickening agent charging metering units 2 screw feed metering device be controlled, its according to set water and The blanking amount of thickening agent is adjusted by thickening agent ratio, to realize automatic ration constant speed feeding;PLC Control unit 1 also with acid solution charging metering units 3 be connected, its according to set acid solution ratio and 2 The signal that acidproof flow transducer transmits, adjusts the defeated of two kinds of acid solutions by 2 acidproof flow control valves Enter amount and input speed;PLC control unit 1 is connected with liquid additive charging metering units 4, its root According to formula proportion and the signal of 6 dosing pump feedbacks of various liquid additives, adjust various liquid and add Add input quantity and the input speed of agent;PLC control unit 1 also be arranged at the first mixed cell 6 and Dosing pump between second mixed cell 9 connects, and the dry powder or the paste body shape that control the first mixed cell 6 increase Quantity that thick dose of premixed solution carries to the second mixed cell 9 and speed;PLC control unit 1 also with clearly Water input block 5 connects, and it can be according to the signal of flow transducer feedback, and passing ratio regulation valve is adjusted Flow and the flow velocity of whole clear water reach setting;PLC control unit 1 also with the 4th mixed cell 7 tank body Interior liquid level monitoring device connects, and according to the result of liquid level monitoring device feedback, adjusts sending out of lotion unit 10 Liquid measure.
The operation principle of acidizing and fracturing fluid of the present invention continuous mixture feeder is as follows:
Dry powder or paste body shape thickening agent input through the screw feed metering device of thickening agent charging metering units 2 First mixed cell 6, wherein screw feed metering device is by PLC control unit control, can be according to setting Pigment or the input water yield of cream ratio and clear water input block be automatically adjusted the defeated of thickening agent accordingly The amount of sending;Clear water is also delivered to the first mixed cell 6, wherein clear water input block by clear water input block 5 Signal is fed back to PLC control unit 1 by the flow transducer of 5, and PLC control unit is by regulation ratio Regulation valve makes the transporting velocity of clear water and conveying capacity reach regulation requirement, so can realize adding dry powder or Add water while paste body shape thickening agent, and the mass ratio controlling interior powdered thickening agent per second and water is 0.05-10:100, or the volume ratio controlling interior paste body shape thickening agent per second and water is 0.05-20:100, this ratio It is pre-miscible that the clear water of example and dry powder or mastic thickening agent obtain thickening agent after the first mixed cell 6 mixing Liquid.
Thickening agent premixed solution pumps into the second mixed cell 9 by dosing pump, and this dosing pump is by PLC control Unit 1 controls, and can adjust the amount of pumping into of thickening agent premixed solution at any time and pump into speed;Meanwhile, logical Crossing 2 acid-proof pumps of acid solution feed charging meter amount unit from the corresponding acid solution of external suction, acid solution is through respective pipeline On acidproof flow transducer and acidproof flow control valve after pump into the second mixed cell 9, PLC controls single Unit is according to the two kinds of acid solution ratios set and the signal of 2 acidproof flow transducer feedbacks, by 2 Acidproof flow control valve adjusts input quantity and the input speed of two kinds of acid solutions;Meanwhile, added by liquid All kinds of liquid additives are pumped into the second mixing by multiple dosing pumps of agent charging metering units 4 respectively from outside Unit 9, PLC control unit is fed back according to formula proportion and multiple dosing pump of various liquid additives Signal, adjust various liquid additive input quantity and input speed, above-mentioned various liquid additives Addition accounts for the 0.5-20% of acidizing and fracturing fluid total amount;Meanwhile, by the water pump of clear water input block 5 from External suction clear water, clear water pumps into the second mixing list after the flow transducer on pipeline and ratio adjusting valve Unit 9, the signal that PLC control unit is fed back according to flow transducer, passing ratio regulation valve adjusts clear water Flow and flow velocity.So thickening agent premixed solution, concentrated hydrochloric acid/Fluohydric acid., all kinds of liquid additive and The preliminary mixing that clear water obtains at the second mixed cell 9 the most to scale;Through preliminary mixed liquid Entering in SX type pipeline static mixer, all liq forms flow-disturbing state, mutually clashes into, so exists This static mixer achieves the further mixing of acid solution;Finally enter in the 4th mixed cell 7, liquid Body forms multiple swirling along tank inner deflector, and in the acidizing and fracturing fluid finally given, wherein thickening agent is used Amount accounts for the 0.01-5% of acidizing and fracturing fluid gross mass, and acid solution accounts for the 0.05-40% of acidizing and fracturing fluid gross mass. Acidizing and fracturing fluid is pumped out by the lotion pump of lotion unit 10;In the tank of the 4th mixed cell 7, liquid level is set Detector, liquid level in PLC control unit detection tank, and control lotion pump delivery accordingly, in preventing tank Liquid evacuates.
It is (acid liquid viscosity, close to use that the acidizing and fracturing fluid mixture that obtains of the present embodiment device is uniform, quality is high Degree is stable, without lamination, and each additive entirety mix homogeneously in acid solution).
The acidizing and fracturing fluid continuous mixing device that another embodiment of the present invention provides includes: PLC controls single Unit 1, thickening agent charging metering units 2, acid solution charging metering units 3, liquid additive charging are measured single Unit 4, clear water input block the 5, first mixed cell the 6, the 4th mixed cell (blending tank) 7, lotion Unit 10, said units is mountable on a flat bed trailer.Below above-mentioned parts are said one by one Bright.
Thickening agent charging metering units 2 is identical with above-described embodiment structure and annexation.
Clear water input block 5, is connected with the first mixed cell 6 and the 4th mixed cell 7, for the One mixed cell 6 and the 4th mixed cell 7 quantitative constant speed conveying clear water.In this embodiment, clear water is defeated Enter two flow transducers that unit 5 includes two water pumps, is respectively arranged on two exit of pump pipelines And two ratio adjusting valves, each water pump is from external suction clear water, the flow transducer in corresponding pipeline And pump into after ratio adjusting valve in described first mixed cell 6 and the 4th mixed cell 7.
First mixed cell 6, is directly connected with the 4th mixed cell 7, enters from thickening agent for mixing The material dry powder of metering units 2 or paste body shape thickening agent and from the clear water of clear water input block 5 to be increased Thick dose of premixed solution.In this embodiment, the first mixed cell 6 is common with mechanical stirring device Mixing arrangement, it addition, be also provided with dosing pump between the first mixed cell 6 and the 4th mixed cell 7, The number of thickening agent premixed solution is inputted to the 4th mixed cell 7 for measuring and controlling the first mixed cell 6 Amount and speed.
Acid solution charging metering units 3, is connected with the 4th mixed cell 7, mixes to the 4th for quantitative constant speed Closing unit 7 and carry acid solution, in this embodiment, acid solution is two kinds i.e. hydrochloric acid and Fluohydric acid., so acid solution Charging metering units 3 includes 2 acid-proof pumps, be arranged on 2 acid-proof pump export pipelines 2 acidproof Flow transducer and 2 acidproof flow control valves, 2 acid-proof pumps are respectively used to pump into hydrochloric acid and Fluohydric acid., According to the ratio of hydrochloric acid Yu Fluohydric acid., the corresponding acid-proof pump selecting different flow, hydrochloric acid and Fluohydric acid. divide Do not adjusted from external suction, acidproof flow transducer and acidproof flow on respective pipeline by respective acid-proof pump The 4th mixed cell 7 is pumped into after joint valve.
Liquid additive charging metering units 4, be connected with the 4th mixed cell 7, for quantitative constant speed to 4th mixed cell 7 carries various liquid additive, and in this embodiment, various liquid additives are slow Erosion agent, ferrous stability, surfactant, clay stabilizer, mutual solvent and foaming agent, so liquid Body additives charging metering units 4 includes that 6 dosing pumps and liquid add manifold, and all kinds of liquid additives are through each Self-measuring pump and liquid add manifold and are input to the second mixed cell 9.
Lotion unit 10 is identical with above-described embodiment structure and annexation.
The meter that PLC control unit 1 is removed and is arranged between the first mixed cell 6 and the 4th mixed cell 7 Amount pump connects the dry powder to control the first mixed cell 6 or paste body shape thickening agent premixed solution to the 4th mixing Outside the quantity of unit 7 conveying and speed, other annexations are same as the previously described embodiments.
The present embodiment is as overall mixed cell using the 4th mixed cell 7, say, that by thickening agent Premixed solution, acid solution, various liquid additive and water pump in the 4th mixed cell 7 the most simultaneously and carry out Mixing, the acidizing and fracturing fluid mixture using the device of this embodiment to obtain is uniform, the highest (acid of quality Fluid viscosity, density stabilized, without lamination, each additive entirety mix homogeneously in acid solution).

Claims (9)

1. an acidizing and fracturing fluid continuous mixture feeder, it is characterised in that including:
Clear water input block, supplies clear water for quantitative constant speed;
First mixed cell, is connected with described clear water input block, for mixed powder or paste body shape thickening agent and from the clear water of described clear water input block to obtain thickening agent premixed solution;
Overall mixed cell, is connected with described first mixed cell, is used for mixing described thickening agent premixed solution, acid solution and various liquid additive to obtain acidizing and fracturing fluid;
Lotion unit, is connected with described overall mixed cell, for discharging from the acidizing and fracturing fluid of described overall mixed cell;
Described overall mixed cell is made up of the second mixed cell, the 3rd mixed cell, the 4th mixed cell;Wherein:
Second mixed cell, is connected with described first mixed cell, for preliminary mix acid liquor, various liquid additive and the thickening agent premixed solution from described first mixed cell;
3rd mixed cell, is connected with described second mixed cell, for mixing further from the liquid of described second mixed cell;
4th mixed cell, is connected with described 3rd mixed cell, is used for the final overall mixing liquid from described 3rd mixed cell to obtain acidizing and fracturing fluid;
Also include:
Thickening agent charging metering units, is connected with described first mixed cell, for quantitative constant speed to described first mixed cell supply dry powder or paste body shape thickening agent;
Acid solution charging metering units, is connected with described second mixed cell, for quantitative constant speed to described second mixed cell conveying acid solution;
Liquid additive charging metering units, is connected with described second mixed cell, carries various liquid additives for quantitative constant speed to described second mixed cell;
Described 4th mixed cell is blending tank, including: tank body, top is provided with inlet, and bottom is provided with liquid outlet;First deflector, for being inverted truncated cones build, including big peristome and little peristome, it is arranged at the top of described tank body and is positioned at the lower section of described inlet, so that forming swirling from the liquid of inlet on the inner side conical surface of described first deflector and the little peristome from described first deflector flows downward out;Second deflector, for circular cone build, is arranged at the middle part of described tank body, so that the liquid flowed out from the described first little peristome of deflector is scattering on the outside conical surface of described second deflector and flows downwards along the outside conical surface of described second deflector;3rd deflector, for being inverted truncated cones build, including big peristome and little peristome, it is arranged at the bottom of described tank body, so that forming swirling along the liquid under conical flow outside described second deflector on the inner side conical surface of the 3rd deflector and the little peristome from described 3rd deflector flows downward out.
Device the most according to claim 1, it is characterised in that described clear water input block is also connected with described second mixed cell, for quantitative constant speed to described second mixed cell conveying clear water.
Device the most according to claim 2, it is characterised in that described clear water input block is connected with described overall hybrid system or the 4th mixed cell, to supply clear water.
Device the most according to claim 1, it is characterised in that described second mixed cell is one section of common pipeline;Described 3rd mixed cell is common pipeline or pipeline static mixer.
Device the most according to claim 1, it is characterised in that the edge of the described first big peristome of deflector and the edge of the described 3rd big peristome of deflector are both secured on the sidewall of described tank body;Leaving space between the sidewall of described second deflector and described tank body, so that the liquid under conical flow is scattered to the inner side conical surface of described 3rd deflector outside described second deflector, described second deflector is fixed on the sidewall of described tank body by support.
Device the most according to claim 1, it is characterized in that, described device also includes PLC control unit, is connected with described thickening agent charging metering units, the blanking amount of thickening agent is adjusted, to realize automatic ration constant speed feeding by described PLC control unit according to the water set and thickening agent ratio;Described PLC control unit is connected with described acid solution charging metering units, according to the various acid solution ratios set, adjusts input quantity and the input speed of various acid solution;Described PLC control unit is connected with described liquid additive charging metering units, according to the formula proportion of various liquid additives, adjusts input quantity and the input speed of various liquid additive;Described PLC control unit also controls quantity and the speed that the thickening agent premixed solution of the first mixed cell carries to the second mixed cell;Described PLC control unit is also connected with described clear water input block, in order to automatically adjust clear water input quantity and flow velocity reaches setting.
Device the most according to claim 6, it is characterised in that be provided with liquid level monitoring device in the tank body of described 4th mixed cell.
The most according to claim 7, device, it is characterised in that described PLC control unit is also connected with the liquid level monitoring device in described 4th mixed cell tank body, according to the result of liquid level monitoring device feedback, adjust the lotion amount of described lotion unit.
Device the most according to claim 2, it is characterized in that, described thickening agent charging metering units, acid solution charging metering units, liquid additive charging metering units, clear water input block, the first mixed cell, the second mixed cell, the 3rd mixed cell, the 4th mixed cell, lotion unit and control unit are installed at least one transport carrier.
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