CN105126697A - Fracturing fluid mass flow continuous liquid preparation system for hydraulic fracturing and liquid preparation process of system - Google Patents
Fracturing fluid mass flow continuous liquid preparation system for hydraulic fracturing and liquid preparation process of system Download PDFInfo
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- CN105126697A CN105126697A CN201510529031.0A CN201510529031A CN105126697A CN 105126697 A CN105126697 A CN 105126697A CN 201510529031 A CN201510529031 A CN 201510529031A CN 105126697 A CN105126697 A CN 105126697A
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Abstract
The invention discloses a fracturing fluid mass flow continuous liquid preparation system for hydraulic fracturing and a liquid preparation process of the system. The fracturing fluid mass flow continuous liquid preparation system for hydraulic fracturing comprises a water supply unit, a liquid preparation unit, a liquid chemical additive adding unit and a buffer tank which are sequentially communicated through a pipeline, a power driving system and a control system, and electric signals and data signals; a flow meter is arranged on a connecting pipeline between the liquid preparation unit and the liquid chemical additive adding unit, and the whole system is designed in an integral skid-mounted manner. The liquid preparation method prepares a liquid according to the demand of a fracturing site and limitation on special technological parameters based on the power driving system and the control system, can precisely control the starting sequences, the working times and the output quantities of the systems in a liquid preparation process, and can detect a base liquid preparation effect. The system can automatically prepare the liquid according to the demand at the site and immediately convey the fracturing liquid which satisfies the demand of the fracturing process, and is substantially free of residual liquids.
Description
Technical field
The present invention relates to technical field of petroleum extraction, be specifically related to the continuous liquid mixing system of a kind of fracturing fracturing fluid large discharge and dosing method.
Background technology
Fracturing is a kind of yield-increasing technology method of extensive use in the outer oil gas field stimulation process of Current Domestic.Can form by pressure break the crack that length is suitable, flow conductivity is strong, and then link up and the oil storage space and the seepage channel that are connected oil gas, thus realize smooth operation and the high and stable yields of oil gas field.
Current fracturing fluid dosing adopts the mode of production to mainly contain three kinds, i.e. traditional approach, on-the-spot dosing mode, automation dosing mode:
(1) traditional approach: complete of the fracturing fluid preparation in make-up station after, by transportation tank car, fracturing fluid is transported to operation field, which cost of transportation is high, is only applicable to the dosing of nearly well pressure break.
(2) on-the-spot dosing mode: namely rely on some simple devices at fracturing work scene and operating personnel to carry out single tank dosing, this dosing mode has the shortcoming that hand labor intensity is large, liquid preparation time is long, the operating environment of this dosing mode is poor, and batch mixed work flow criticized also easily causes of the fracturing fluid putrid and deteriorated and waste.
(3) automation dosing: in recent years, Halliburton (Halliburton) company and Schlumberger (Schlumberger) company have developed dissimilar fracturing fluid continuous mixing device respectively, but they are only suitable for the fracturing fluid mixture mode based on concentrate, are not suitable for applying of CHINESE REGION.Given this, four Ji Saiwa companies have developed a kind of continuous mixing device that can realize pigment mixing, but this unit has particular/special requirement to thickening agent guar gum powder; In addition, the same car that this device can't realize potassium chloride and other various additives adds, and single batch of dosing amount is less, can not meet massive hydraulic fracture job requirements.
In addition, guar gum is directly pumped in water and mixes by the continuous mixture mode of the current centrifugal pump generally adopted---jet pump, be difficult to realize the stable conveying of guar gum and mix with the effective of other material, the method is easy to the phenomenon occurring water bag powder, affects fracturing effect.
Based on above present situation, need to research and develop a kind of continuous liquid mixing system of huge discharge fracturing fluid and dosing technique thereof that truly can meet oil field massive hydraulic fracture construction operation demand.
Summary of the invention
For above-mentioned the deficiencies in the prior art, the object of the present invention is to provide a kind of conveying and the interpolation that realize of the fracturing fluid continuous preparation completely and guar gum is carried out to stable and uniform, according to detail design, the realization of automatic control system can require that real-time online adjusts material proportion and flow, avoid the waste of fracturing fluid and chemical addition agent, have the advantages that mixing of materials is stablized, hand labor intensity is low, dosing quality is high, reduce the continuous liquid mixing system of fracturing work cost fracturing fracturing fluid large discharge.
Another object of the present invention is the dosing technique utilizing the continuous liquid mixing system of this fracturing fracturing fluid large discharge to realize the continuous dosing of large large discharge.
For this reason, technical solution of the present invention is as follows:
A kind of continuous liquid mixing system of fracturing fluid large discharge of fracturing, comprise successively by the water supplying unit of pipeline communication, dosing unit, liquid chemical additive adding device and surge tank, power drive line is unified control system, the signal of telecommunication and data-signal, connecting pipe between described dosing unit and described liquid chemical additive adding device is provided with flowmeter, described dosing unit comprises multiple mass transport metering device, in-line viscometer, with described mass transport metering device discharging opening by connecting pipe the high shear Homogenizing pump be communicated with and the electronic measurement valve being arranged on described mass transport metering device discharge outlet, described liquid chemical additive adding device comprises multiple stabilizing agent transport metering mechanism, the centrifugal pump be communicated with by connecting pipe with described stabilizing agent transport metering mechanism discharging opening and the electronic measurement valve being arranged on described stabilizing agent transport metering mechanism discharge outlet, described high shear Homogenizing pump, described in-line viscometer, described flowmeter, described centrifugal pump are communicated with by connecting pipe successively with described surge tank, described power drive line control system of unifying is real-time online control system based on PLC, the described signal of telecommunication is transmitted by power cable, and described data-signal is that the Communication Control cable by connecting transmits.
Further, described dosing unit comprises Klorvess Liquid transport metering mechanism, guar gum powders flowing purification metering device, high shear Homogenizing pump and in-line viscometer, described Klorvess Liquid transport metering mechanism comprises Klorvess Liquid feed arrangement, described guar gum powders flowing purification metering device comprise guar gum powder feed arrangement and with the streaming tank be connected with described guar gum powder feed arrangement by connecting pipe, described water supplying unit, Klorvess Liquid feed arrangement and streaming tank is equal and described high shear Homogenizing pump feeding mouth is communicated with by connecting pipe and in connecting pipe between described Klorvess Liquid feed arrangement and described high shear Homogenizing pump, connecting pipe between described streaming tank and described high shear Homogenizing pump is respectively arranged with the first electronic measurement valve and the second electronic measurement valve.
Described high shear Homogenizing pump can make water, Klorvess Liquid, guar gum fully mix and dispersion and fining, makes refinement degree reach 0.5 μm, forms fracturing fluid base fluid.
Further, the top of described streaming tank tank body is along the circumferential direction provided with multiple charging aperture, the bottom of described streaming tank is provided with compressed air inlet pipe, fluidized-bed is provided with in described streaming tank tank body, above described fluidized-bed, be provided with a discharging opening, described discharging opening is communicated with described high shear Homogenizing pump feeding mouth by connecting pipe.
Particularly, compressed air required for described vulcanizing tank sends into the air chamber of sealed shell of tank bottom by connecting pipe, the guar gum plastochondria on air chamber fludizied bed is made to suspend into flow-like, when in tank, pressure reaches rated value, open discharge valve, the guar gum powder material of liquidation blows supply high shear Homogenizing pump uniformly by pipeline; Compressed air needed for described vulcanizing tank provides the mini air compressor of power to provide by described power-driven system.
Guar gum is after the fluidization treatment of described streaming tank, integrated suspension becomes flow-like, be conducive to follow-up under the effect of high shear Homogenizing pump with Klorvess Liquid, fully the mixing of water, can ensure that the fracturing fluid of preparation is continuously without " water bag powder " phenomenon, solution viscosity rises soon, mixture is even, and fracturing fluid quality is high
Further, described liquid chemical additive adding device comprises clay stabilizer transport metering mechanism, centrifugal pump and stabilizing agent transport metering mechanism, described clay stabilizer transport metering mechanism comprises clay stabilizer feed arrangement, described stabilizing agent transport metering mechanism comprises stabilizing agent feed arrangement, the discharging opening of described high shear Homogenizing pump, clay stabilizer feed arrangement and described stabilizing agent transport metering mechanism is equal and described centrifugal pump feeding mouth is communicated with by connecting pipe and in connecting pipe between described clay stabilizer feed arrangement and described centrifugal pump, connecting pipe between described stabilizing agent feed arrangement and described centrifugal pump is respectively arranged with the 3rd electronic measurement valve and the 4th electronic measurement valve.
Further, described water supplying unit comprises water pump and flow-control metering device, and described flow-control metering device is arranged in the connecting pipe between described water pump and described high shear Homogenizing pump.
Further, described water supplying unit, described Klorvess Liquid transport metering mechanism, described guar gum powders flowing purification metering device, described in-line viscometer, described clay stabilizer transport metering mechanism and described dose of transport metering mechanism are all connected by the signal of telecommunication and data-signal and power drive line control system of unifying, described flowmeter is connected with control system by data-signal, and described centrifugal pump is connected by the signal of telecommunication and data-signal and power drive line control system of unifying;
Further, described power-driven system comprises the mini air compressor carrying diesel generating set and provided power by diesel-driven generator.Described mini air compressor is for providing the compressed air of vulcanizing tank.
The continuous liquid mixing system of fracturing fluid large discharge of this fracturing is preferably the design of integral skid mounting formula, and that establishes in it carries diesel generating set, without the need to external connection power, is applicable to field fracturing work onsite application.
A compounding method for the continuous liquid mixing system of fracturing fluid large discharge of fracturing, comprises the following steps:
S1, by required of the fracturing fluid formula input power and control system, the continuous liquid mixing system of control system control fracturing liquid starts, water supply flow is by the flow-control metering device automatic water-supply in water supplying unit connecting pipe, Klorvess Liquid transport metering mechanism in dosing unit and guar gum volume control device carry Klorvess Liquid and guar gum according to the signal received respectively in high shear Homogenizing pump, and by high shear Homogenizing pump, water, Klorvess Liquid and guar gum are mixed, form base fluid;
S2, the base fluid obtained by step S1 flow through described in-line viscometer and detect, and viscosity results is fed back to control system by control circuit, control system is by calculating the rear flow regulating the second electronic measurement valve of guar gum powders flowing purification metering device, regulate the adding proportion of guar gum, if reached required viscosity index, then continue the adding proportion keeping existing guar gum; If lower than required viscosity index, then strengthen the adding proportion of guar gum according to ratio; If exceed required viscosity index, then reduce the adding proportion of guar gum according to ratio, in the range of viscosities of technological requirement base fluid being remained on set;
S3, flow out before dosing unit enters liquid chemical additive adding device when base fluid, flow through flowmeter to detect, the flow detected is fed back to control system by control circuit by flowmeter, control system is by the flow-control metering device of clear water unit and the first electronic measurement valve of dosing unit and the second electronic measurement valve regulation feeding amount: if reach required flow indicator, then continue the addition keeping existing water, Klorvess Liquid and guar gum; If lower than required flow indicator, then increase the addition of water, Klorvess Liquid and guar gum according to ratio; If exceed required viscosity index, then reduce the addition of additive according to ratio, finally make base fluid reach the output quantity of setting;
S4, control system are while regulating the first electronic measurement valve in the flow-control metering device of clear water unit and dosing unit and the second electronic measurement valve, the adjustment of feeding amount is carried out to the 3rd electronic measurement valve of the clay stabilizer transport metering mechanism in chemical addition agent adding device and the 4th electronic measurement valve of stabilizing agent transport metering mechanism, clay stabilizer and stabilizing agent can be added in the ratio set in step according to the real-time traffic of base fluid in base fluid.
S5, with the addition of the base fluid of clay stabilizer and stabilizing agent, be admitted in surge tank under the self-priming effect of the centrifugal pump in liquid chemical additive adding device, the pressing crack construction that the liquid be stored in surge tank is ready to use in next step uses.
The continuous liquid mixing system of this fracturing fluid large discharge adopts the design of integral skid mounting formula, convenient transport, carry diesel engine unit, without the need to external connection power, can be good at meeting the on-the-spot technical need without the fracturing fluid dosing of mains supply of large-scale field fracturing work fracturing fluid, guar gum is after the process of streaming tank fluid bed, integrated suspension becomes flow-like, be conducive to follow-up under the effect of high shear Homogenizing pump with Klorvess Liquid, fully the mixing of water, ensure that the fracturing fluid of preparation is continuously without " water bag powder " phenomenon, solution viscosity rises soon, mixture is even, and fracturing fluid quality is high; This system controls based on the real-time online of PLC, accurately can control the boot sequence of each system in dosing process, working time and output quantity, and detects base fluid preparation effect; Can automatically complete dosing according to field demand and in time conveying meet fracturing technology requirement fracturing fluid and substantially without raffinate.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of the continuous liquid mixing system of fracturing fluid large discharge of fracturing of the present invention.
Detailed description of the invention
Below in conjunction with drawings and the specific embodiments, the present invention is described further, but these embodiments have any restriction to the present invention absolutely not.
Embodiment 1
As shown in Figure 1, the continuous liquid mixing system of fracturing fluid large discharge of a kind of fracturing of the present invention, comprise successively by the water supplying unit 1 of pipeline communication, dosing unit 2, liquid chemical additive adding device 4 and surge tank 5, power drive line is unified control system, the signal of telecommunication and data-signal, connecting pipe between described dosing unit 2 and described liquid chemical additive adding device 4 is provided with flowmeter 3, wherein:
Described dosing unit 2 comprises Klorvess Liquid transport metering mechanism 6, guar gum powders flowing purification metering device 9, high shear Homogenizing pump 13 and in-line viscometer 14, described Klorvess Liquid transport metering mechanism 6 comprises Klorvess Liquid feed arrangement 7, described guar gum powders flowing purification metering device 9 comprise guar gum powder feed arrangement 10 and with the streaming tank 11 be connected with described guar gum powder feed arrangement 10 by connecting pipe, described water supplying unit 1, Klorvess Liquid feed arrangement 7 and streaming tank 11 is equal and described high shear Homogenizing pump 13 feeding mouth is communicated with by connecting pipe and in connecting pipe between described Klorvess Liquid feed arrangement 7 and described high shear Homogenizing pump 13, connecting pipe between described streaming tank 11 and described high shear Homogenizing pump 13 is respectively arranged with the first electronic measurement valve 8 and the second electronic measurement valve 12,
Described in-line viscometer 14 is arranged on the exit of described high shear Homogenizing pump 13, carries out viscosimetric analysis to the mixed liquor in high shear Homogenizing pump 13.
Described liquid chemical additive adding device 4 comprises clay stabilizer transport metering mechanism 15, centrifugal pump 21 and stabilizing agent transport metering mechanism 18, described clay stabilizer transport metering mechanism 15 comprises clay stabilizer feed arrangement 16, described stabilizing agent transport metering mechanism 18 comprises stabilizing agent feed arrangement 19, the discharging opening of described high shear Homogenizing pump 13, clay stabilizer feed arrangement 16 and described stabilizing agent transport metering mechanism 18 is equal and described centrifugal pump 21 feeding mouth is communicated with by connecting pipe and in connecting pipe between described clay stabilizer feed arrangement 16 and described centrifugal pump 21, connecting pipe between described stabilizing agent feed arrangement 19 and described centrifugal pump 21 is respectively arranged with the 3rd electronic measurement valve 17 and the 4th electronic measurement valve 20,
Described in-line viscometer 14 is arranged in the connecting pipe between described high shear Homogenizing pump 13 and described flowmeter 3, and described centrifugal pump 21 is communicated with described surge tank 5 by connecting pipe.
Described power-driven system carries diesel generating set, for whole system provides power, ensures the normal operation of whole system; Described control system is the real-time online control system based on PLC, real-time control dosing process, realize water, guar gum, Klorvess Liquid, clay stabilizer and stabilizing agent automatically to add, wherein, described control system is provided with a personal-machine interface screen, can be set by man-machine interface display screen to of the fracturing fluid formula and technological parameter;
Described water supplying unit 1 comprises water pump and flow-control metering device, and described flow-control metering device is arranged in the connecting pipe between described water pump and described high shear Homogenizing pump 13, for controlling whose increment.
Described water supplying unit 1, described Klorvess Liquid transport metering mechanism 6, described guar gum powders flowing purification metering device 9, described in-line viscometer 14, described clay stabilizer transport metering mechanism 15 and described dose of transport metering mechanism 18 are all connected by the signal of telecommunication and data-signal and power drive line control system of unifying, described flowmeter 3 is connected with control system by data-signal, and described centrifugal pump 21 is connected by the signal of telecommunication and data-signal and power drive line control system of unifying;
The top of described streaming tank tank body is along the circumferential direction provided with multiple charging aperture, the bottom of described streaming tank is provided with compressed air inlet pipe, fluidized-bed is provided with in described streaming tank tank body, above described fluidized-bed, be provided with a discharging opening, described discharging opening is communicated with described high shear Homogenizing pump feeding mouth by connecting pipe; Compressed air required for described vulcanizing tank sends into the air chamber of sealed shell of tank bottom by connecting pipe, the guar gum plastochondria on air chamber fludizied bed is made to suspend into flow-like, when in tank, pressure reaches rated value, open the discharge valve being arranged on described discharge outlet, the guar gum powder material of liquidation blows supply high shear Homogenizing pump uniformly by pipeline; Compressed air needed for described vulcanizing tank provides the mini air compressor of power to provide by described power-driven system;
The continuous liquid mixing system of this large discharge, adopt overall skid-mounted formula structure, when fracturing work needs to configure fracturing fluid in the wild, this skid car is moved on to scene, according to geological condition determination fracturing fluid configuration technological parameter, start power drive line to unify control system, the continuous liquid mixing system startup of large discharge enters duty, water supplying unit, dosing unit, liquid chemical additive unit adds water, Klorvess Liquid, guar gum according to the control signal received, and makes refinement degree reach 0.5 μm in the abundant mixing of high shear Homogenizing pump and dispersion and fining, forms fracturing fluid base fluid; In-line viscometer real-time online detect fracturing fluid base fluid viscosity and by real-time for signal sending control system; Be connected to the flowmeter real time record flow on fracturing fluid base fluid conveyance conduit and by real-time for signal sending control system, automatically control the addition of water, Klorvess Liquid, guar gum, clay stabilizer and stabilizing agent; Fracturing fluid base fluid adds clay stabilizer and stabilizing agent automatically by liquid chemical additive unit and control system, interpolation clay stabilizer and stabilizing agent fracturing fluid base fluid flow to surge tank by centrifugal pump, are stored in surge tank and facilitate next step pressing crack construction to use.
The continuous liquid mixing system of described large discharge carries by power drive line control system of unifying the fracturing fluid meeting technological requirement in real time, inputs the formula corresponding with demand complete dosing and conveying meets the fracturing fluid that fracturing technology requires in time according to field demand in control system.
Embodiment 2:
The method that fracturing fluid large discharge liquid mixing system uses, the method step is as follows:
S1, by in required of the fracturing fluid formula input power and control system, make it of the fracturing fluidly high-volume can reach 8m3/min, the continuous liquid mixing system of control system control fracturing liquid starts, water supply flow is by the flow-control metering device automatic water-supply in water supplying unit connecting pipe, Klorvess Liquid transport metering mechanism in dosing unit and guar gum volume control device carry Klorvess Liquid and guar gum according to the signal received respectively in high shear Homogenizing pump, and by high shear Homogenizing pump by water, Klorvess Liquid and guar gum mixing, form base fluid,
S2, the base fluid obtained by step S1 flow through described in-line viscometer and detect, and viscosity results is fed back to control system by control circuit, control system is by calculating the rear flow regulating the second electronic measurement valve of guar gum powders flowing purification metering device, regulate the adding proportion of guar gum, if reached required viscosity index, then continue the adding proportion keeping existing guar gum; If lower than required viscosity index, then strengthen the adding proportion of guar gum according to ratio; If exceed required viscosity index, then reduce the adding proportion of guar gum according to ratio, in the range of viscosities of technological requirement base fluid being remained on set;
S3, flow out before dosing unit enters liquid chemical additive adding device when base fluid, flow through flowmeter to detect, the flow detected is fed back to control system by control circuit by flowmeter, control system is by the flow-control metering device of clear water unit and the first electronic measurement valve of dosing unit and the second electronic measurement valve regulation feeding amount: if reach required flow indicator, then continue the addition keeping existing water, Klorvess Liquid and guar gum; If lower than required flow indicator, then increase the addition of water, Klorvess Liquid and guar gum according to ratio; If exceed required viscosity index, then reduce the addition of additive according to ratio, finally make base fluid reach the output quantity of setting;
S4, control system are while regulating the first electronic measurement valve in the flow-control metering device of clear water unit and dosing unit and the second electronic measurement valve, the adjustment of feeding amount is carried out to the 3rd electronic measurement valve of the clay stabilizer transport metering mechanism in chemical addition agent adding device and the 4th electronic measurement valve of stabilizing agent transport metering mechanism, clay stabilizer and stabilizing agent can be added in the ratio set in step according to the real-time traffic of base fluid in base fluid.
S5, with the addition of the base fluid of clay stabilizer and stabilizing agent, be admitted in surge tank under the self-priming effect of the centrifugal pump in liquid chemical additive adding device, the pressing crack construction that the liquid be stored in surge tank is ready to use in next step uses or directly carries out output fracturing work, and its granting amount can reach 8m3/min.
Claims (8)
1. the continuous liquid mixing system of fracturing fluid large discharge of a fracturing, it is characterized in that, comprise successively by the water supplying unit (1) of pipeline communication, dosing unit (2), liquid chemical additive adding device (4) and surge tank (5), power drive line is unified control system, the signal of telecommunication and data-signal, connecting pipe between described dosing unit (2) and described liquid chemical additive adding device (4) is provided with flowmeter (3)
Described dosing unit (2) comprises multiple mass transport metering device, in-line viscometer (14), the high shear Homogenizing pump (13) be communicated with by connecting pipe with described mass transport metering device discharging opening and the electronic measurement valve being arranged on each described mass transport metering device discharge outlet;
The centrifugal pump (21) that described liquid chemical additive adding device (4) comprises multiple stabilizing agent transport metering mechanism, be communicated with by connecting pipe with described stabilizing agent transport metering mechanism discharging opening and the electronic measurement valve being arranged on each described stabilizing agent transport metering mechanism discharge outlet;
Described high shear Homogenizing pump (13), described in-line viscometer (14), described flowmeter (3), described centrifugal pump (21) are communicated with by connecting pipe successively with described surge tank (5);
Described power drive line control system of unifying is real-time online control system based on PLC;
The described signal of telecommunication is transmitted by power cable, and described data-signal is that the Communication Control cable by connecting transmits.
2. the continuous liquid mixing system of fracturing fluid large discharge of fracturing according to claim 1, it is characterized in that, described dosing unit (2) comprises Klorvess Liquid transport metering mechanism (6), guar gum powders flowing purification metering device (9), high shear Homogenizing pump (13) and in-line viscometer (14), described Klorvess Liquid transport metering mechanism (6) comprises Klorvess Liquid feed arrangement (7), described guar gum powders flowing purification metering device (9) comprise guar gum powder feed arrangement (10) and with the streaming tank (11) be connected with described guar gum powder feed arrangement (10) by connecting pipe, described water supplying unit (1), Klorvess Liquid feed arrangement (7) and streaming tank (11) are all communicated with by connecting pipe with described high shear Homogenizing pump (13) feeding mouth and in connecting pipe between described Klorvess Liquid feed arrangement (7) and described high shear Homogenizing pump (13), connecting pipe between described streaming tank (11) and described high shear Homogenizing pump (13) is respectively arranged with the first electronic measurement valve (8) and the second electronic measurement valve (12).
3. the continuous liquid mixing system of fracturing fluid large discharge of fracturing according to claim 2, it is characterized in that, the top of described streaming tank (11) tank body is along the circumferential direction provided with multiple charging aperture, the bottom of described streaming tank (11) is provided with compressed air inlet pipe, fluidized-bed is provided with in described streaming tank (11) tank body, above described fluidized-bed, be provided with a discharging opening, described discharging opening is communicated with described high shear Homogenizing pump (13) feeding mouth by connecting pipe.
4. the continuous liquid mixing system of fracturing fluid large discharge of the fracturing according to Claims 2 or 3, it is characterized in that, described liquid chemical additive adding device (4) comprises clay stabilizer transport metering mechanism (15), centrifugal pump (21) and stabilizing agent transport metering mechanism (18), described clay stabilizer transport metering mechanism (15) comprises clay stabilizer feed arrangement (16), described stabilizing agent transport metering mechanism (18) comprises stabilizing agent feed arrangement (19), the discharging opening of described high shear Homogenizing pump (13), clay stabilizer feed arrangement (16) and described stabilizing agent transport metering mechanism (18) are all communicated with by connecting pipe with described centrifugal pump (21) feeding mouth and in connecting pipe between described clay stabilizer feed arrangement (16) and described centrifugal pump (21), connecting pipe between described stabilizing agent feed arrangement (19) and described centrifugal pump (21) is respectively arranged with the 3rd electronic measurement valve (17) and the 4th electronic measurement valve (20).
5. the continuous liquid mixing system of fracturing fluid large discharge of fracturing according to claim 4, it is characterized in that, described water supplying unit (1) comprises water pump and flow-control metering device, and described flow-control metering device is arranged in the connecting pipe between described water pump and described high shear Homogenizing pump (13).
6. the continuous liquid mixing system of fracturing fluid large discharge of fracturing according to claim 5, it is characterized in that, described water supplying unit (1), described Klorvess Liquid transport metering mechanism (6), described guar gum powders flowing purification metering device (9), described in-line viscometer (14), described clay stabilizer transport metering mechanism (15) and described dose of transport metering mechanism (18) are all connected by the signal of telecommunication and data-signal and power drive line control system of unifying, described flowmeter (3) is connected with control system by data-signal, described centrifugal pump (21) is connected by the signal of telecommunication and data-signal and power drive line control system of unifying.
7. the continuous liquid mixing system of fracturing fluid large discharge of fracturing according to claim 6, is characterized in that, described power-driven system comprises the mini air compressor carrying diesel generating set and provided power by diesel-driven generator.
8. use a compounding method for the continuous liquid mixing system of fracturing fluid large discharge of fracturing as claimed in claim 6, it is characterized in that, comprise the following steps:
S1, by required of the fracturing fluid formula input power and control system, the continuous liquid mixing system of control system control fracturing liquid starts, water supply flow is by the flow-control metering device automatic water-supply in water supplying unit connecting pipe, Klorvess Liquid transport metering mechanism (6) in dosing unit and guar gum volume control device (9) carry Klorvess Liquid and guar gum according to the signal received respectively in high shear Homogenizing pump (13), and by high shear Homogenizing pump (13), water, Klorvess Liquid and guar gum are mixed, form base fluid;
S2, the base fluid obtained by step S1 flow through described in-line viscometer (14) and detect, and viscosity results is fed back to control system by control circuit, control system is by calculating the rear flow regulating the second electronic measurement valve (12) of guar gum powders flowing purification metering device (9), regulate the adding proportion of guar gum, if reached required viscosity index, then continue the adding proportion keeping existing guar gum; If lower than required viscosity index, then strengthen the adding proportion of guar gum according to ratio; If exceed required viscosity index, then reduce the adding proportion of guar gum according to ratio, in the range of viscosities of technological requirement base fluid being remained on set;
S3, flow out before dosing unit enters liquid chemical additive adding device when base fluid, flow through flowmeter (3) to detect, the flow detected is fed back to control system by control circuit by flowmeter (3), control system is passed through the flow-control metering device of clear water unit (1) and the first electronic measurement valve (8) of dosing unit (2) and the second electronic measurement valve (12) and is regulated feeding amount: if reach required flow indicator, then continue the addition keeping existing water, Klorvess Liquid and guar gum; If lower than required flow indicator, then increase the addition of water, Klorvess Liquid and guar gum according to ratio; If exceed required viscosity index, then reduce the addition of additive according to ratio, finally make base fluid reach the output quantity of setting;
S4, control system is while regulating the first electronic measurement valve (8) in the flow-control metering device of clear water unit (1) and dosing unit (2) and the second electronic measurement valve (12), the adjustment of feeding amount is carried out to the 3rd electronic measurement valve (17) of the clay stabilizer transport metering mechanism (15) in chemical addition agent adding device (4) and the 4th electronic measurement valve (20) of stabilizing agent transport metering mechanism (18), clay stabilizer and stabilizing agent can be added in the ratio set in step (1) in base fluid according to the real-time traffic of base fluid,
S5, with the addition of the base fluid of clay stabilizer and stabilizing agent, be admitted under the self-priming effect of the centrifugal pump in liquid chemical additive adding device in surge tank (5), the pressing crack construction that the liquid be stored in surge tank (5) is ready to use in next step uses.
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| CN107335377A (en) * | 2017-08-07 | 2017-11-10 | 中国石油集团渤海钻探工程有限公司 | Integrated type skid-mounted acid solution continuous mixing device and technique |
| CN108993182A (en) * | 2018-08-22 | 2018-12-14 | 中国石油集团渤海钻探工程有限公司 | A kind of continuous nitration mixture acid feeding appts of polygamy side's automation |
| CN112279941A (en) * | 2020-10-21 | 2021-01-29 | 浙江传化合成材料有限公司 | Continuous aging device and continuous aging process for ternary rare earth catalyst |
| CN114526765A (en) * | 2020-11-23 | 2022-05-24 | 中国石油天然气股份有限公司 | Liquid preparation system and liquid preparation method of slickwater fracturing fluid |
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| CN112279941A (en) * | 2020-10-21 | 2021-01-29 | 浙江传化合成材料有限公司 | Continuous aging device and continuous aging process for ternary rare earth catalyst |
| CN112279941B (en) * | 2020-10-21 | 2024-04-30 | 浙江传化合成材料股份有限公司 | Continuous ageing device and continuous ageing process for ternary rare earth catalyst |
| CN114526765A (en) * | 2020-11-23 | 2022-05-24 | 中国石油天然气股份有限公司 | Liquid preparation system and liquid preparation method of slickwater fracturing fluid |
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