CN104147951A - Continuous fracturing fluid blending method and continuous fracturing fluid blending equipment for hydraulic fracturing - Google Patents
Continuous fracturing fluid blending method and continuous fracturing fluid blending equipment for hydraulic fracturing Download PDFInfo
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- CN104147951A CN104147951A CN201410353969.7A CN201410353969A CN104147951A CN 104147951 A CN104147951 A CN 104147951A CN 201410353969 A CN201410353969 A CN 201410353969A CN 104147951 A CN104147951 A CN 104147951A
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Abstract
The invention discloses a continuous fracturing fluid blending method for hydraulic fracturing. The continuous fracturing fluid blending method comprises the steps of blending first mixed liquid, blending second mixed liquid, fermenting, and detecting, wherein the mass ratio of potassium chloride to clean water is (0.05-5) to 100, and the mass ratio of dry guar gum powder to the first mixed liquid is (0.01-1) to 100. The invention also discloses continuous fracturing fluid blending equipment for hydraulic fracturing. The continuous fracturing fluid blending equipment comprises a water supply unit, a potassium chloride powder feeding unit, a guar gum powder feeding unit, a liquid additive feeding unit, a first mixing unit, a second mixing unit, a liquid fermenting unit, a detecting unit and a control unit. According to the continuous fracturing fluid blending method and the continuous fracturing fluid blending equipment, the fracturing fluid can be continuously and completely prepared, the massive hydraulic fracturing operational requirement can be met, the device is of a skid-mounted design integrally, the transportation is convenient, the equipment is provided with a diesel engine set without external power, and the method and the equipment are suitable for on-site use of field fracturing operation. The fracturing fluid continuously prepared by the method and the equipment has uniform viscosity without fisheyes and has high quality.
Description
Technical field
The present invention relates to the fracturing fluid field that is mixed continuously, particularly continuous compounding method for fracturing fluid and equipment for a kind of fracturing for fracturing.
Background technology
Fracturing is a kind of yield-increasing technology method of extensive use in the outer oil gas field volume increase process of Current Domestic.By pressure break, can form 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, thereby realize smooth operation and the high and stable yields of oil gas field.
Fracturing fluid dosing employing mode mainly contains three kinds at present, i.e. traditional approach, on-the-spot dosing mode, automation dosing mode:
(1) traditional approach: fracturing fluid is transported to operation field by transportation tank car after having been prepared by make-up station, this mode pressure break cost of transportation is high, and is only applicable to nearly well pressure break;
(2) on-the-spot dosing mode: all kinds of chemical addition agents are transported to fracturing work scene, rely on more on-the-spot simple devices and site operation personnel, realize single tank dosing, but this single tank dosing needs long-time dosing, and hand labor intensity is larger, fracturing work environment is poor, and the work flow of batch mixed batch use, easily causes liquid corruption, waste;
(3) automation dosing: the Halliburton of oilfield services provider (Halliburton) company and Schlumberger (Schlumberger) company develop respectively dissimilar fracturing fluid continuous mixing device, but, they are only suitable for the conveying of concentrate, be not suitable for some areas, for example the practical application of China.Given this, the Si Jisaiwa company of China develops a kind of continuous mixing device that can realize pigment mixing, but there is specific (special) requirements this unit to thickening agent guar gum powder.In addition, its same car that can't realize all potassium chloride and other various additives adds, and dosing amount is less, can not meet extensive fracturing work requirement.
Summary of the invention
Defect for above-mentioned prior art, the object of the present invention is to provide continuous compounding method for fracturing fluid and equipment for a kind of fracturing, realized of the fracturing fluid preparation completely continuously, hand labor intensity is low, the realization of automatic control system can require to adjust at any time material proportion and flow according to detail design, avoid the waste of fracturing fluid and chemical addition agent, reduced fracturing work cost.In addition, the method for designing of fracturing fluid continuous mixing device can realize large discharge capacity dosing, and device has been realized of the fracturing fluid continuous dosing, can meet MHF job requirements.The design of device integral skid mounting formula, convenient transportation, carries diesel engine unit, without external connection power, is applicable to fracturing work scene, field and uses.
For this reason, technical scheme of the present invention is as follows:
A fracturing continuous compounding method for fracturing fluid, comprises the following steps:
(1) configuration the first mixed liquor: come the clear water of self-water-supplying unit fully to mix at the first mixed cell with potassium chloride dry powder, obtain the first mixed liquor, the mass ratio of described potassium chloride and clear water is 0.05-5:100;
(2) configuration the second mixed liquor: described the first mixed liquor and guar gum dry powder enter the second mixed cell, add the 1st liquid additive simultaneously, after fully mixing, obtain the second mixed liquor, the mass ratio of described guar gum dry powder and the first mixed liquor is 0.01-1:100;
(3) lotion: described the second mixed liquor enters lotion unit adds the 2nd liquid additive simultaneously, obtains final mixed liquor;
(4) detect: final mixed liquor, by detecting unit, detects online to its flow and viscosity.
Described the 1st liquid additive and the 2nd liquid additive have different compatibilities.In configuration fracturing fluid process, need the chemical addition agent kind of interpolation more, as: organic clay stabilizers, cleanup additive, bactericide, foaming agent, defoamer, demulsifier, fluid loss additive, pH adjusting agent, temperature stability agent, the broken glue activator of low temperature etc.According to chemical liquid compatibility principle, when some chemical addition agent mixes, can react simultaneously and cause additive to lose efficacy, therefore, according to the difference of chemical addition agent compatibility, be divided into the 1st liquid additive and the 2nd liquid additive, add respectively.
In the present invention program, by potassium chloride dry powder and clear water, according to mass ratio, be first that 0.05-5:100 is mixed into the first mixed liquor, i.e. salt solution; According to guar gum dry powder and the mass ratio of salt solution, be that 0.01-1:100 mixes at the second mixed cell afterwards, obtain the second mixed solution, i.e. fracturing fluid base fluid.Through inventor's many experiments and the adjustment to mixture mixed proportion in mixing of materials process, when being configured according to the restriction of above-mentioned layoutprocedure and above-mentioned mass fraction proportioning, the fracturing base fluid viscosity of joining is even, without flake phenomenon.
The equipment of continuous compounding method for fracturing fluid for a kind of fracturing, it is characterized in that, comprising: for water unit, potassium chloride powder feed unit, guar gum powder feed unit, liquid additive feed unit, the first mixed cell, the second mixed cell, lotion unit, detecting unit and control module.
Described the first mixed cell is a blending tank, is connected with potassium chloride powder feed unit with supplying water unit, and its inside is provided with anchor frame type stirring device.When clear water and potassium chloride powder enter after the first mixed cell, anchor gate stirrer fast rotational stirs, and the liquid that mixing arm drives be with quiescent layer from tank skin, at the bottom of preventing potassium chloride adhesion or being deposited in tank skin and tank.
Described the second mixed cell is connected with the first mixed cell, guar gum powder feed unit and lotion unit, and described the second mixed cell is a blending tank, comprises stirring area and guiding region.
Described stirring area inwall is provided with bulge-structure, can assist stirring, makes mixed effect better, and namely the viscosity of liquid is more even; Blending tank inlet is positioned at tank body stirring area downside, and inside is provided with oblique oar formula agitating device, and stirring area volume makes the second mixed solution stop at least half a minute and through top, stirring area liquid outlet, flows into guiding region again.Meet this time conditions relevant with tank body stirring area volume to fluid flow, when fluid flow be 8 sides/minute, more than the volume of tank body stirring area need to reach 4 sides.The dissolving that homogenizes of guar gum and the first mixed solution is realized in described stirring area
Described guiding region is provided with the deflector that polylith is fixed on inwall both sides, and described both sides deflector is staggered.The mixed liquor deflector of flowing through is convenient in the setting of guiding region deflector from top to bottom, further mixes, swelling.
Described liquid additive feed unit is connected with lotion unit with the second mixed cell, connecting line intersection is provided with three-way diverter valve, by being set on pipeline, three-way diverter valve realizes the direction that liquid additive adds, fracturing fluid continuous mixing device operating personnel can, according to the fracturing fluid requirement of filling a prescription, select interpolation time, point of addition and the order of addition of liquid additive.
Preferably, described liquid additive feed unit comprises that a plurality of liquid adds unit, described a plurality of liquid adds that unit is arranged in parallel and be at least divided into two groups, different liquids additive adds unit by each liquid and adds, according to the difference of liquid additive order of addition and point of addition, a plurality of liquid is added to unit and be divided into many groups, between each group, connecting line is provided with three-way diverter valve, controls its point of addition, interpolation time and order of addition.
Described detecting unit is connected with lotion unit, and detecting unit inside is provided with flow detector and viscosity detecting device, complete mixed liquor in linear flow rate and viscosity measurements, guarantee mixed liquor quality.
Described water unit and the liquid additive feed unit of supplying includes liquid feeding pump, flowmeter and control valve, realizes quantitatively and adding by proportioning.
Described potassium chloride powder feed unit and guar gum powder feed unit inside are equipped with volumetric metering scale, for measuring the equipment that adds transportation, control and measure potassium chloride dry powder and guar gum dry-coal feeding amount, realize potassium chloride dry powder and the continuous conveying of guar gum dry powder.
Described oblique oar formula agitating device is three grades of 3*45 ° of impellers, and every one-level forms with the blade at axial angle at 45 ° by 3, has three grades.What the inclined paddle type agitator of this design produced is axial force, being applicable to low viscosity, suspension and sol solutions stirs, three grades of blade design prevent liquid liquid mixing layering, promote the exchange up and down of fluid, this kind of stirrer mechanism is simple, and cost of manufacture is low, can replace the impeller-agitator that price is high, can obtain good effect, viscosity evenly, without flake, nothing " water bag powder " phenomenon.
Described control module is PLC control module, and for controlling described other unit, without intermittently dosing of each weighing in proportion, hand labor intensity is low.
Described equipment also comprises diesel engine unit, this diesel engine unit is installed on one and can transports envelope with supplying water unit, potassium chloride powder feed unit, guar gum powder feed unit, liquid additive feed unit, the first mixed cell, the second mixed cell, lotion unit, the common skid-mounted type of detecting unit and control unit, the design of device integral skid mounting formula, convenient transportation, carry diesel engine unit, without external connection power, be applicable to the on-the-spot use of field fracturing work.
Compared with prior art, the present invention has realized of the fracturing fluid preparation completely continuously, can meet MHF job requirements, the realization of automatic control system can require to adjust at any time material proportion and flow according to detail design, avoid the waste of fracturing fluid and chemical addition agent, reduced fracturing work cost, comprised clear water, potassium chloride dry powder, guar gum dry powder, the timing of various chemical addition agent, quantitatively add; Pigment and chemical addition agent are by the continuous dosing of design proportion, and without intermittently dosing of each weighing in proportion, hand labor intensity is low; The design of device integral skid mounting formula, convenient transportation, carries diesel engine unit, without external connection power, is applicable to fracturing work scene, field and uses.Adopt the method and equipment continuously preparation fracturing fluid viscosity evenly, without flake, nothing " water bag powder " phenomenon.Fracturing fluid quality is high.
Figure of description
Fig. 1 is the schematic diagram of the continuous mixing device of fracturing fluid for fracturing of the present invention;
Fig. 2 is the first mixed cell blending tank schematic diagram of the present invention;
Fig. 3 is the second mixed cell blending tank schematic diagram of the present invention.
The specific embodiment
Below in conjunction with accompanying drawing, a kind of fracturing of the present invention is elaborated with continuous compounding method for fracturing fluid and equipment.
This fracturing continuous compounding method for fracturing fluid, comprises the following steps:
(1) configuration the first mixed liquor: come the clear water of self-water-supplying unit fully to mix at the first mixed cell with potassium chloride dry powder, obtain the first mixed liquor, the mass ratio of described potassium chloride and clear water is 0.05-5:100;
(2) configuration the second mixed liquor: described the first mixed liquor and guar gum dry powder enter the second mixed cell, add the 1st liquid additive simultaneously, after fully mixing, obtain the second mixed liquor, the mass ratio of described guar gum dry powder and the first mixed liquor is 0.01-1:100;
(3) lotion: described the second mixed liquor enters lotion unit adds the 2nd liquid additive simultaneously, obtains final mixed liquor;
(4) detect: final mixed liquor, by detecting unit, detects online to its flow and viscosity.
As Figure 1-3, the equipment that this fracturing is mixed continuously with fracturing fluid comprises: for water unit, potassium chloride powder feed unit, guar gum powder feed unit, liquid additive feed unit, the first mixed cell, the second mixed cell, lotion unit, detecting unit and control module.Control module is used for controlling above-mentioned other each unit.
The first mixed cell is a blending tank, is connected with potassium chloride powder feed unit with supplying water unit, and its inside is provided with anchor frame type stirring device; The second mixed cell is connected with the first mixed cell, guar gum powder feed unit and lotion unit, the second mixed cell is a blending tank, comprise stirring area and guiding region, stirring area inwall is provided with bulge-structure, blending tank inlet is positioned at tank body stirring area downside, inside is provided with oblique oar formula agitating device, stirring area volume makes the second mixed solution stop at least half a minute and through top, stirring area liquid outlet, flows into guiding region again, guiding region is provided with the deflector that polylith is fixed on inwall both sides, and described both sides deflector is staggered; Liquid additive feed unit is connected with lotion unit with the second mixed cell, and connecting line intersection is provided with three-way diverter valve, to change the interpolation direction of liquid additive; Detecting unit is connected with lotion unit, and detecting unit inside is provided with flow detector and viscosity detecting device.
The operation principle of this mixing device filter is as follows:
The clear water of confession water unit supply and the potassium chloride dry powder of potassium chloride powder feed unit supply enter after the first mixed cell by certain mass ratio through volumetric metering scale separately, inner anchor frame type stirring device stirs it, potassium chloride dry powder fully dissolve with clear water in, obtain the first mixed solution, i.e. salt solution.The first mixed liquor enters the second mixed cell by liquid feeding pump and guar gum dry powder enters the second mixed cell stirring area from downside inlet by a certain percentage, simultaneously, the 1st liquid additive adds at regular time and quantity by three-way diverter valve, it is inner arrange three grades of 3*45 ° of impellers it is stirred, stirring area volume makes the second mixed solution stop at least half a minute and through top, stirring area liquid outlet, flows into guiding region again.Mixed solution flows into guiding region by top liquid outlet, and mixed solution washes away from top to bottom through the staggered deflector in inwall both sides, and further mixing, swelling, enter lotion unit afterwards.
Fracturing fluid continuous mixing device operating personnel can be according to the fracturing fluid requirement of filling a prescription, change three-way diverter valve direction, selected interpolation time, point of addition and order of addition, add the 2nd liquid additive to lotion unit, mix with the second mixed solution in lotion unit, form final mixed solution.Final mixed solution enters detecting unit by manifold, and the flow detector that detecting unit inside is provided with and viscosity detecting device detect and control flow final mixed solution, its viscosity is detected simultaneously, guarantees the of the fracturing fluid quality of supplying.Above-mentioned whole process all has PLC control module to control.
In addition, described equipment also comprises diesel engine unit, this diesel engine unit is installed on one and can transports envelope with supplying water unit, potassium chloride powder feed unit, guar gum powder feed unit, liquid additive feed unit, the first mixed cell, the second mixed cell, lotion unit, the common skid-mounted type of detecting unit and control unit, carry diesel engine unit, without external connection power, convenient transportation, is applicable to the on-the-spot use of field fracturing work.
The above embodiments are principle and the effect thereof of illustrative the invention only, and the embodiment of part utilization, but not for limiting the present invention; It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise of the invention, can also make some distortion and improvement, these all belong to protection scope of the present invention.
Claims (9)
1. a fracturing continuous compounding method for fracturing fluid, is characterized in that, comprises the following steps:
(1) configuration the first mixed liquor: come the clear water of self-water-supplying unit fully to mix at the first mixed cell with potassium chloride dry powder, obtain the first mixed liquor, wherein, the mass ratio of described potassium chloride and clear water is 0.05-5:100;
(2) configuration the second mixed liquor: described the first mixed liquor and guar gum dry powder enter the second mixed cell, add the 1st liquid additive simultaneously, after fully mixing, obtain the second mixed liquor, wherein, the mass ratio of described guar gum dry powder and the first mixed liquor is 0.01-1:100;
(3) lotion: described the second mixed liquor enters lotion unit adds the 2nd liquid additive simultaneously, obtains final mixed liquor;
(4) detect: final mixed liquor, by detecting unit, detects online to its flow and viscosity.
2. fracturing continuous compounding method for fracturing fluid according to claim 1, is characterized in that, described the 1st liquid additive and the 2nd liquid additive have different compatibilities.
3. realize the equipment of continuous compounding method for fracturing fluid for fracturing claimed in claim 1 for one kind, it is characterized in that, comprising: for water unit, potassium chloride powder feed unit, guar gum powder feed unit, liquid additive feed unit, the first mixed cell, the second mixed cell, lotion unit, detecting unit and control module;
Described the first mixed cell is a blending tank, is connected with potassium chloride powder feed unit with supplying water unit, and its inside is provided with anchor frame type stirring device;
Described the second mixed cell is connected with the first mixed cell, guar gum powder feed unit and lotion unit, described the second mixed cell is a blending tank, comprise stirring area and guiding region, described stirring area inwall is provided with bulge-structure, blending tank inlet is positioned at tank body stirring area downside, inside is provided with oblique oar formula agitating device, stirring area volume makes the second mixed solution stop at least half a minute and through top, stirring area liquid outlet, flows into guiding region again, described guiding region is provided with the deflector that polylith is fixed on inwall both sides, and described both sides deflector is staggered;
Described liquid additive feed unit is connected with lotion unit with the second mixed cell, and connecting line intersection is provided with three-way diverter valve, to change the interpolation direction of liquid additive;
Described detecting unit is connected with lotion unit, and detecting unit inside is provided with flow detector and viscosity detecting device.
4. the equipment of continuous compounding method for fracturing fluid for fracturing according to claim 3, is characterized in that, described water unit and the liquid additive feed unit of supplying includes liquid feeding pump, flowmeter and control valve.
5. the equipment of continuous compounding method for fracturing fluid for fracturing according to claim 3, is characterized in that, described potassium chloride powder feed unit and guar gum powder feed unit inside are equipped with volumetric metering scale.
6. the equipment of continuous compounding method for fracturing fluid for fracturing according to claim 3, is characterized in that, described oblique oar formula agitating device is three grades of 3*45 ° of impellers.
7. the equipment of continuous compounding method for fracturing fluid for fracturing according to claim 3, is characterized in that, described liquid additive feed unit comprises that a plurality of liquid adds unit, and described a plurality of liquid adds that unit is arranged in parallel and be at least divided into two groups.
8. the equipment of continuous compounding method for fracturing fluid for fracturing according to claim 3, is characterized in that, described control module is PLC control module, for automatically controlling described other unit.
9. the equipment of continuous compounding method for fracturing fluid for fracturing according to claim 3, it is characterized in that, described equipment also comprises diesel engine unit, and this diesel engine unit is installed on one and can transports in envelope with supplying water unit, potassium chloride powder feed unit, guar gum powder feed unit, liquid additive feed unit, the first mixed cell, the second mixed cell, lotion unit, the common skid-mounted type of detecting unit and control unit.
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN105126697A (en) * | 2015-08-25 | 2015-12-09 | 中国石油集团渤海钻探工程有限公司 | Fracturing fluid mass flow continuous liquid preparation system for hydraulic fracturing and liquid preparation process of system |
| CN107794022A (en) * | 2017-10-19 | 2018-03-13 | 中国石油集团渤海钻探工程有限公司 | A kind of method of extemporaneous preparation fracturing fluid |
| CN109248623A (en) * | 2018-09-25 | 2019-01-22 | 中国石油集团渤海钻探工程有限公司 | The continuous compounding process of acidification acid solution and its device |
| CN109796956A (en) * | 2018-12-27 | 2019-05-24 | 四机赛瓦石油钻采设备有限公司 | A kind of electricity drives fracturing fluid continuously mixed sledge |
| CN110926917A (en) * | 2019-11-06 | 2020-03-27 | 大庆油田有限责任公司 | Acid-alkali-resistant rapid liquid mixing application sample dividing device and method |
| CN111841435A (en) * | 2020-06-30 | 2020-10-30 | 江苏金湖输油泵有限公司 | Rotor pump with even function of ejection of compact |
| CN112755892A (en) * | 2020-12-16 | 2021-05-07 | 成都劳恩普斯科技有限公司 | System and method for automatically and online adjusting viscosity of construction real-time water for fracturing |
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| CN110926917A (en) * | 2019-11-06 | 2020-03-27 | 大庆油田有限责任公司 | Acid-alkali-resistant rapid liquid mixing application sample dividing device and method |
| CN111841435A (en) * | 2020-06-30 | 2020-10-30 | 江苏金湖输油泵有限公司 | Rotor pump with even function of ejection of compact |
| CN112755892A (en) * | 2020-12-16 | 2021-05-07 | 成都劳恩普斯科技有限公司 | System and method for automatically and online adjusting viscosity of construction real-time water for fracturing |
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Inventor after: Xu Kebin Inventor after: Li Lei Inventor after: Zeng Hao Inventor after: Feng Xiaoning Inventor after: Hu Chaoqi Inventor after: Yang Xiaotao Inventor after: Ti Yun Inventor after: Wang Yansheng Inventor after: Li Jun Inventor before: Xu Kebin Inventor before: Li Lei Inventor before: Zeng Hao Inventor before: Feng Xiaoning Inventor before: Hu Chaochao Inventor before: Yang Xiaotao Inventor before: Ti Yun Inventor before: Wang Yansheng Inventor before: Li Jun |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: XU KEBIN LI LEI CENG HAO FENG XIAONING HU ZHAOZHAO YANG XIAOTAO TI YUN WANG YANSHENG LI JUN TO: XU KEBIN LI LEI CENG HAO FENG XIAONING HU CHAOQI YANG XIAOTAO TI YUN WANG YANSHENG LI JUN |
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| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141119 |
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| WD01 | Invention patent application deemed withdrawn after publication |