CN108680205A - A kind of closed mixing device device for detecting performance of carbon dioxide and method - Google Patents
A kind of closed mixing device device for detecting performance of carbon dioxide and method Download PDFInfo
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- CN108680205A CN108680205A CN201810790100.7A CN201810790100A CN108680205A CN 108680205 A CN108680205 A CN 108680205A CN 201810790100 A CN201810790100 A CN 201810790100A CN 108680205 A CN108680205 A CN 108680205A
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- carbon dioxide
- valve
- mixing device
- knockout drum
- closed mixing
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 406
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 201
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 201
- 238000002156 mixing Methods 0.000 title claims abstract description 85
- 238000000034 method Methods 0.000 title claims abstract description 19
- 238000012360 testing method Methods 0.000 claims abstract description 103
- 238000011084 recovery Methods 0.000 claims abstract description 38
- 239000012530 fluid Substances 0.000 claims abstract description 23
- 238000004891 communication Methods 0.000 claims abstract description 22
- 239000004576 sand Substances 0.000 claims abstract description 21
- 239000013049 sediment Substances 0.000 claims abstract description 20
- 229960004424 carbon dioxide Drugs 0.000 claims description 199
- 239000007788 liquid Substances 0.000 claims description 52
- 239000007791 liquid phase Substances 0.000 claims description 36
- 239000012071 phase Substances 0.000 claims description 30
- 230000000740 bleeding effect Effects 0.000 claims description 10
- 238000010079 rubber tapping Methods 0.000 claims description 7
- 230000006641 stabilisation Effects 0.000 claims description 5
- 238000011105 stabilization Methods 0.000 claims description 5
- 229910002090 carbon oxide Inorganic materials 0.000 claims description 4
- 238000004064 recycling Methods 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 claims description 2
- 230000008676 import Effects 0.000 claims 1
- 238000006073 displacement reaction Methods 0.000 abstract description 6
- 238000004088 simulation Methods 0.000 abstract description 5
- 238000001514 detection method Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 5
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 241000790917 Dioxys <bee> Species 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000004177 carbon cycle Methods 0.000 description 3
- GCNLQHANGFOQKY-UHFFFAOYSA-N [C+4].[O-2].[O-2].[Ti+4] Chemical compound [C+4].[O-2].[O-2].[Ti+4] GCNLQHANGFOQKY-UHFFFAOYSA-N 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000006012 detection of carbon dioxide Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000002459 sustained effect Effects 0.000 description 2
- 239000004408 titanium dioxide Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000002309 gasification Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- 230000000306 recurrent effect Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D21/00—Measuring or testing not otherwise provided for
- G01D21/02—Measuring two or more variables by means not covered by a single other subclass
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
Abstract
The present invention provides a kind of closed mixing device device for detecting performance of carbon dioxide and methods, include knockout drum, carbon dioxide recycle pump group and the friction test unit and communication apparatus that circuit is in turn connected to form by pipeline, the input end of the friction test unit is connected with the outlet end of carbon dioxide recycle pump group, and the inlet end and an outlet end of the friction test unit is respectively equipped with pressure sensor one and pressure sensor two；The knockout drum is communicated with unloading interface by pipeline, which is equipped with and fills recovery unit.The closed mixing device device for detecting performance of this carbon dioxide provided by the invention, the air-tightness of the closed mixing device of carbon dioxide can be detected, and measure fluid frictional resistance using transparent testing tube, it is flowed convenient for load fluid under the live different tube diameters of simulation, obtain simultaneously sediment transport revolution speed of screw under maximum sediment transport speed, fixed displacement and sand than calibration.
Description
Technical field
The invention belongs to oil-gas field development technical fields, and in particular to a kind of closed mixing device performance detection of carbon dioxide
Device and method.
Background technology
The one kind of carbon dioxide dry method Sand Fracturing Technology as anhydrous fracturing technique has hyposmosis, Low pressure reservoir
There is preferable applicability.The technology can be realized " anhydrous pressure break ", and reservoir and water-sensitive and water blocking damage are eliminated, and improve pressure aftereffect
Fruit；Fracturing fluid can protect reservoir and supporting crack without residue, realize the autonomous row of returning.
Carbon dioxide dry method Sand Fracturing Technology belongs to emerging technology, the closed mulling of Core equipment carbon dioxide at home
Device be also at continue to optimize it is improved during, needed before the closed mixing device input field application of the carbon dioxide newly developed
The sediment transport spiral shell under full-scale simulation test, including sealing performance, maximum sediment transport speed, fixed displacement is carried out to its performance parameter
Rotation speed, than relationship etc., if the closed mixing device of carbon dioxide is blindly put into field application, can increase construction not with sand
Certainty, sediment transport precision can not accurate control, security risk increase.
In addition in pipeline flowing there is flowing frictional resistance in load fluid, and flowing frictional resistance size directly influences liquid carbon dioxide
Phase, if flowing frictional resistance is excessive, liquid carbon dioxide will produce gasification, and fracturing unit truck walks empty pump, and operational discharge capacity fluctuation can be caused big
And be difficult to improve etc., it is directed to friction loss characteristic of the load fluid in pipeline in live carbon dioxide dry method sand fracturing construction and grinds
Study carefully and is in theoretical research stage, the full-scale testing process of complete simulation site operation situation a kind of not yet domestic at present.
Invention content
It is close to carbon dioxide the purpose of the present invention is to provide a kind of closed mixing device device for detecting performance of carbon dioxide
The performance for closing mixing device is detected.
It is another object of the present invention to provide a kind of closed mixing device method for testing performance of carbon dioxide, pass through inspection
It surveys the air-tightness of the closed mixing device of carbon dioxide, flow the corresponding sand of different rotating speeds under frictional resistance, maximum sediment transport speed, fixed displacement
Than being demarcated, increase sediment transport precision, it is ensured that safety in production.
Technical scheme is as follows：
A kind of closed mixing device device for detecting performance of carbon dioxide, includes the separation that circuit is in turn connected to form by pipeline
Tank, carbon dioxide recycle pump group and friction test unit and communication apparatus, the input end and titanium dioxide of the friction test unit
The outlet end of carbon cycle pump group is connected, and the inlet end and an outlet end of the friction test unit is respectively equipped with pressure sensor one
With pressure sensor two；
The knockout drum is communicated with unloading interface by pipeline, which is equipped with and fills recovery unit；The carbon dioxide follows
Ring pump group includes at least two carbon dioxide recycle pumps in parallel, and the communication apparatus connects with the closed mixing device of carbon dioxide
It connects, the pipeline between the communication apparatus and carbon dioxide recycle pump group is equipped with flowmeter, and the communication apparatus and frictional resistance are surveyed
It tries to be equipped with test access main valve between unit, it is total that test outlet is equipped between the communication apparatus and carbon dioxide recycle pump group
Valve.
The friction test unit includes multiple test valves and transparent testing tube, and multiple transparent testing tubes are set up in parallel, and is surveyed
Examination valve is connected to and is corresponded by pipeline with transparent testing tube.
The recovery unit that fills includes carbon dioxide unloading pump, two filling valves, two recovery valves, two filling valves point
It is not connected by pipeline with carbon dioxide unloading pump both ends, one end of described two recovery valves is connected in parallel on carbon dioxide by pipeline
Unloading pumps and between the filling valve of knockout drum side, and the other end of described two recovery valves is connected in parallel on respectively close to knockout drum
The both ends of the filling valve of side.
Knockout drum inlet valve, the input end of the friction test unit are equipped between the friction test unit and knockout drum
Interior cycle main valve is equipped between the outlet end of carbon dioxide recycle pump group；
Described fill is equipped with liquid phase filling valve between recovery unit and knockout drum（With gas phase filling valve, the liquid phase filling valve and
Gas phase filling valve is set up in parallel, and test outlet main valve is connected to flowmeter side by side with interior cycle main valve.
Further include surge tank, the surge tank is set between knockout drum and carbon dioxide recycle pump group, on the surge tank
Equipped with surge tank tapping valve；
The surge tank both ends are connected to knockout drum and carbon dioxide recycle pump group by pipeline respectively, the surge tank with detach
Connecting pipeline is equipped with communicating valve between tank, and carbon dioxide recycle pump both ends are respectively equipped with pump entry valve and circulating pump
Outlet valve.
Further include the auger conveyor set on knockout drum lower part, described auger conveyor one end is communicated with knockout drum, another
End is communicated with proppant batch meter, and strainer is equipped in the knockout drum.
The communication apparatus includes that connection bend pipe one is distinguished with bend pipe two, the connection bend pipe two is connected to bend pipe one is connected to
Connect the upper and lower side of the closed mixing device of carbon dioxide, the connection bend pipe two be connected to bend pipe one and be more and set side by side
It sets.
Further include pressure sensor three, the pressure sensor three is set to friction test unit and carbon dioxide recycle pump group
Between pipeline on.
A kind of closed mixing device method for testing performance of carbon dioxide, uses the closed mixing device performance detection of carbon dioxide
Device includes the following steps：
Step 1）The closed mixing device device for detecting performance pressurising of carbon dioxide：Carbon dioxide tank vehicle is connected by unloading interface,
Open test access main valve, knockout drum inlet valve, carbon dioxide recycle pump group, interior cycle main valve, fill in recovery unit two
Carbonoxide unloading pumps and two filling valves, gas phase filling valve carry out pressurising, until pressure sensor shows numerical value and carbon dioxide
Tank car pressure is consistent；
Step 1）The closed mixing device device for detecting performance pressurising of carbon dioxide：Carbon dioxide tank vehicle is connected by unloading interface,
Knockout drum inlet valve, communicating valve, pump entry valve, outlet valve of circulating pump, interior cycle main valve, test valve are opened, gas phase fills
Valve is detected the inside pressurising of device, until pressure sensor one and pressure sensor two show numerical value and carbon dioxide tank vehicle
Pressure is consistent；
Step 2）Knockout drum, surge tank fill liquid phase：Pump entry valve, knockout drum inlet valve are closed, it is single that opening fills recycling
Two filling valves, liquid phase filling valve in member open knockout drum air bleeding valve, surge tank air bleeding valve to 30%, start carbon dioxide and turn
Pump is deposited, liquid phase in carbon dioxide tank vehicle is transferred in knockout drum and surge tank, when knockout drum liquid level reaches 1300mm, surge tank
When liquid level reaches 1700mm, carbon dioxide unloading pump, two filling valves, liquid phase filling valve are closed, filling liquid is completed；
Step 4）The closed mixing device pressurising of carbon dioxide：In step 2）On the basis of, continue with knockout drum gas phase to be titanium dioxide
The closed mixing device pressurising of carbon, until the closed mixing device of carbon dioxide is consistent with the pressure in knockout drum, closing two fills
Valve；
Step 5）The closed mixing device filling liquid of carbon dioxide：Gas phase filling valve is closed, liquid phase filling valve is opened, fills recovery unit
In two recovery valves the exhaust valve open of the closed mixing device of carbon dioxide to 30% is started into carbon dioxide unloading pump, to two
The closed mixing device internal-filling liquid of carbonoxide closes carbon dioxide unloading pump, two recovery valves, liquid when liquid level reaches setting liquid level
Phase filling valve, filling liquid are completed；
Step 6）Load fluid frictional resistance measures：Open test access main valve, friction test unit, knockout drum inlet valve, test outlet
Main valve starts carbon dioxide recycle pump group, simulates site operation discharge capacity, monitors the display numerical value of flowmeter, adjusts carbon dioxide
The rotating speed required when sediment transport revolution speed of screw to the site operation of closed mixing device passes through the transparent test in friction test unit
Pipe observation of liquid state carbon dioxide takes sand situation, after discharge capacity stabilization, recycles 1min, records the numerical value of pressure sensor, obtain
Load fluid frictional resistance.
Further include after load fluid frictional resistance measures, unloading interface being connect with carbon dioxide tank vehicle, by the liquid phase in knockout drum
It is recycled in carbon dioxide tank vehicle.
The beneficial effects of the invention are as follows：The closed mixing device device for detecting performance of this carbon dioxide provided by the invention,
The air-tightness of the closed mixing device of carbon dioxide can be detected, and measure fluid frictional resistance, while obtain maximum sediment transport speed
Degree, the sediment transport revolution speed of screw under fixed displacement and sand than calibration.
It is pumped, is connected in parallel using two or more carbon dioxide recycles, coordinated flowmeter, live carbon dioxide can be simulated
Different displacements size when dry method sand fracturing is constructed；Using surge tank steady and sustained liquid is provided for carbon dioxide recycle pump
Carbon dioxide ensures the continuity of liquid carbon dioxide in circulation line, improves the accuracy of detection；Using transparent testing tube,
It is flowed convenient for load fluid under the live different tube diameters of simulation, transparent testing tube is replaceable, can observe taking for liquid carbon dioxide in real time
Sand situation.
The device can both complete filling for carbon dioxide, and detection can also carry out returning for liquid carbon dioxide after completing
It receives, this is very useful for repetitive test, substantially reduces cost, and environmental protection while improves the profit of liquid carbon dioxide
Use efficiency.
It is described in further details below in conjunction with attached drawing.
Description of the drawings
Fig. 1 is one embodiment of the present invention schematic diagram.
In figure：1, pressure sensor one；2, test access main valve；3, valve is tested；4, transparent testing tube；5, vent valve one；
6, pressure sensor two；7, safety valve one；8, knockout drum inlet valve；9, knockout drum；10, knockout drum air bleeding valve；11, communicating valve；
12, surge tank；13, surge tank air bleeding valve；14, auger conveyor；15, proppant batch meter；16, pump entry valve；17, two
Carbonoxide circulating pump；18, outlet valve of circulating pump；19, flowmeter；20, test outlet main valve；21, vent valve two；22, interior cycle
Main valve；23, the closed mixing device of carbon dioxide；24, unloading interface；25, safety valve two；26, pressure sensor three；27, it recycles
Valve；28, filling valve；29, carbon dioxide unloading pumps；30, surge tank tapping valve；31, liquid phase filling valve；32, gas phase filling valve；
33, knockout drum tapping valve；34, it is connected to bend pipe one；35, friction test unit；36, recovery unit is filled；37, it is connected to bend pipe two.
Specific implementation mode
Embodiment 1：
A kind of closed mixing device device for detecting performance of carbon dioxide is present embodiments provided, including shape is sequentially connected by pipeline
At the knockout drum 9 in circuit, carbon dioxide recycle pump group and friction test unit 35 and communication apparatus, the friction test unit 35
Input end be connected with the outlet end of carbon dioxide recycle pump group, the inlet end and an outlet end of the friction test unit 35 point
It She You not pressure sensor 1 and pressure sensor 26；
The knockout drum 9 is communicated with unloading interface 24 by pipeline, which is equipped with and fills recovery unit 36；The titanium dioxide
Carbon cycle pump group includes at least two carbon dioxide recycle pumps 17 in parallel, and the communication apparatus is filled with the closed mulling of carbon dioxide
23 connections are set, the pipeline between the communication apparatus and carbon dioxide recycle pump group is equipped with flowmeter 19, the communication apparatus
It is equipped with test access main valve 2 between friction test unit 35, is equipped between the communication apparatus and carbon dioxide recycle pump group
Test outlet main valve 20.
The closed mixing device device for detecting performance of this carbon dioxide provided by the invention, can be closed to carbon dioxide mixed
The air-tightness of sand device 23 is detected, and measures fluid frictional resistance, it is ensured that and while safety in production, fracturing unit truck is avoided to walk empty pump,
Lead to problems such as operational discharge capacity fluctuation big and is difficult to improve.
Embodiment 2：
On the basis of embodiment 1, a kind of closed mixing device device for detecting performance of carbon dioxide is present embodiments provided, it is described
Friction test unit 35 includes multiple test valves 3 and transparent testing tube 4, and multiple transparent testing tubes 4 are set up in parallel, test valve 3 and
Transparent testing tube 4 is connected to and is corresponded by pipeline.Transparent testing tube 4 can replace different sizes, test process according to demand
In can take sand situation by 4 real-time observation of liquid state carbon dioxide of transparent testing tube.
It is described fill recovery unit 36 include carbon dioxide unloading pump 29, two filling valves, 28, two recovery valves 27, two
Filling valve 28 pumps 29 both ends with carbon dioxide unloading respectively and is connected by pipeline, and one end of described two recovery valves 27 passes through pipeline
Be connected in parallel on carbon dioxide unloading pump 29 and close to 9 side of knockout drum filling valve 28 between, described two recovery valves 27 it is another
End is connected in parallel on the both ends of the filling valve 28 close to 9 side of knockout drum respectively.It is connect with the external world by unloading interface 24, liquid can be carried out
State carbon dioxide filling and recycling.
Embodiment 3：
On the basis of embodiment 2, a kind of closed mixing device device for detecting performance of carbon dioxide is present embodiments provided, it is described
Knockout drum inlet valve 8, the input end and dioxy of the friction test unit 35 are equipped between friction test unit 35 and knockout drum 9
It is equipped with interior cycle main valve 22 between the outlet end of change carbon cycle pump group；
Described fill is equipped with liquid phase filling valve 31 and gas phase filling valve 32 between recovery unit 36 and knockout drum 9, the liquid phase is filled
Dress valve 31 and gas phase filling valve 32 are set up in parallel, and test outlet main valve 20 is connected to flowmeter side by side with interior cycle main valve 22
19。
As shown in Figure 1, further include surge tank 12, the surge tank 12 be set to knockout drum 9 and carbon dioxide recycle pump group it
Between, the surge tank 12 is equipped with surge tank tapping valve 30；
12 both ends of the surge tank are connected to knockout drum 9 and carbon dioxide recycle pump group by pipeline respectively, the surge tank 12
Connecting pipeline is equipped with communicating valve 11 between knockout drum 9, and 17 both ends of the carbon dioxide recycle pump are respectively equipped with cycle and are pumped into
Mouth valve 16 and outlet valve of circulating pump 18.
Surge tank 12 is that carbon dioxide recycle pump 17 provides steady and sustained liquid carbon dioxide, ensures liquid in circulation line
The continuity of state carbon dioxide improves the accuracy of detection.Surge tank 12 is vertical tank, and entrance is respectively arranged at buffering with outlet
The top and bottom of tank 12.
Further include the auger conveyor 14 set on 9 lower part of knockout drum, 14 one end of the auger conveyor and 9 phase of knockout drum
Logical, the other end is communicated with proppant batch meter 15, and strainer is equipped in the knockout drum 9.Load fluid by when, inside knockout drum 9
Stainless steel filtering net so that liquid carbon dioxide is passed through, proppant stays in knockout drum 9；It is gentle that communicating valve 11 is connected to knockout drum 9
It rushes between tank 12,14 one end of auger conveyor is connect with 99 bottom of knockout drum, and the other end is connect with proppant batch meter 15, support
Agent is transported to by auger conveyor 14 in proppant batch meter 15, carries out sand than measuring.
As shown in Figure 1, in the present embodiment, the communication apparatus includes being connected to bend pipe 1 and being connected to bend pipe 2 37, institute
State connection bend pipe 2 37 and be connected to the upper and lower side that bend pipe 1 is separately connected the closed mixing device of carbon dioxide 23, it is described be connected to it is curved
Pipe 2 37 is more and is set up in parallel with bend pipe 1 is connected to.Further include pressure sensor 3 26, the pressure sensor three
26 are set on the pipeline between friction test unit 35 and carbon dioxide recycle pump group.
Testing process：
1）Detection device pressurising
Carbon dioxide tank vehicle and unloading interface 24 are connected, test access main valve 2 is opened, knockout drum inlet valve 8, communicating valve 11, follows
Ring pump intake valve 16, outlet valve of circulating pump 18, interior cycle main valve 22, two filling valves 28, gas phase filling valves 32 open titanium dioxide
Carbon unloading pump 29 carries out pressurising to detection device, until pressure sensor 1 shows numerical value and extraneous carbon dioxide tank vehicle pressure
Unanimously, Charging installs complete.
2）Knockout drum 9, surge tank 12 fill liquid phase：Pump entry valve 16, knockout drum inlet valve 8 are closed, opening fills
Two filling valves 28, liquid phase filling valve 31 in recovery unit 36, open knockout drum air bleeding valve 10, surge tank air bleeding valve 13 to
30%, start carbon dioxide unloading pump 29, liquid phase in carbon dioxide tank vehicle is transferred in knockout drum 9 and surge tank 12, separation is worked as
When 9 liquid level of tank reaches 1300mm, 12 liquid level of surge tank reaches 1700mm, 29, two filling valves 28 of closing carbon dioxide unloading pump,
Liquid phase filling valve 31, filling liquid are completed；
3）Closed 23 air-leakage test of mixing device of carbon dioxide：The closed mixing device of communication apparatus and carbon dioxide 23 is connected
It connects, opening fills recovery unit 36, gas phase filling valve 32, the use of the gas phase in knockout drum 9 is the closed mixing device of carbon dioxide
23 pressurisings wait for that closed 23 pressure of mixing device of carbon dioxide rises to 0.4MPa, the leakproofness of each connecting portion are checked with suds,
Two filling valves 28 are closed if having leakage, are vented closed 23 pressure of mixing device of carbon dioxide, are re-secured leakage position；Weight
Multiple above-mentioned steps, until the equal No leakage of all sites；
4）Closed 23 pressurising of mixing device of carbon dioxide
Continue on the basis of upper step with 9 gas phase of knockout drum to be closed 23 pressurising of mixing device of carbon dioxide, until carbon dioxide is close
It is consistent with the pressure in knockout drum 9 to close mixing device 23, closes 28 groups of filling valve.
5）Closed 23 filling liquid of mixing device of carbon dioxide
Gas phase filling valve 32 is closed, liquid phase filling valve 31, two recovery valves 27, communicating valves 11 are opened, carbon dioxide is closed mixed
The exhaust valve open of sand device 23 starts carbon dioxide unloading pump 29 to 30%, to closed 23 internal-filling liquid of mixing device of carbon dioxide,
Carbon dioxide unloading pump 29,27 group 27 of recovery valve, liquid phase filling valve 31 are closed when liquid level reaches 1300mm, filling liquid is completed.
6）Sediment transport
1. open test access main valve 2, test valve 3, knockout drum inlet valve 8, pump entry valve 16, outlet valve of circulating pump 18,
Test outlet main valve 20；
2. starting carbon dioxide recycle pump 17, site operation discharge capacity is simulated, constitutes test loop, observation flowmeter 19 shows number
Word, adjustment sediment transport revolution speed of screw is to 5r/min after discharge capacity to be recycled is stablized, run time 1min, and proppant is defeated by circulation line
It is sent to 9 bottom of knockout drum；
3. stopping carbon dioxide recycle pump 17, close communicating valve 11 and knockout drum inlet valve 8, by knockout drum 9 and circulation line every
It opens；Liquid phase 31, two recovery valves 27 of filling valve are opened, liquid carbon dioxide in knockout drum 9 is recycled, is then turned on knockout drum drain
Valve 33 is vented pressure in knockout drum 9.
4. the proppant in knockout drum 9 is delivered to proppant batch meter 15 by auger conveyor 14, in proppant meter
Proppant weight can be directly read on measuring tank 15, is made a record, and obtained in the unit interval under fixed displacement, the sediment transport of 5r/min speed
Degree and sand ratio；
5. repeat step 2.~4., the closed 23 sediment transport revolution speed of screw of mixing device of carbon dioxide is arranged using 5r/min as interval
Unit is stepped up, and until sediment transport revolution speed of screw increases to 100r/min, the sediment transport time is 30s, and it is closed to measure carbon dioxide
The sediment transport speed of mixing device 23 at different set rotation speeds and sand ratio.
7）Unloading
Two filling valves 28, liquid phase filling valve 31 are opened, carbon dioxide unloading pump 29 is opened, by the closed mixing device of carbon dioxide
23 liquid phase is transferred in knockout drum 9；Communicating valve 11 is opened, it is appropriate to open knockout drum air bleeding valve 10, by the liquid in surge tank 12
It is mutually also transferred in knockout drum 9, unloading is completed.
8）Recycling：Unloading interface 24 is connect with carbon dioxide tank vehicle, the liquid phase in knockout drum 9 is all recycled to dioxy
Change in carbon tank car.
9）Pressure release：Knockout drum tapping valve 33, surge tank tapping valve 30, vent valve 1, vent valve 2 21 is opened to be let out
Pressure.
In detection process, if the pressure of detection device is more than setting value, safety valve 1 and safety valve 2 25 can automatically open
Pressure release.
Meanwhile flowing of the detection device simulation load fluid under different tube diameters, the frictional resistance of load fluid is measured, such as
Shown in Fig. 1, detailed process is as follows：
1）Open first in test access 2, four test valves 3 of main valve（Others are closed）, knockout drum inlet valve 8, follow
Ring pump intake valve 16, outlet valve of circulating pump 18, test outlet main valve 20；
2）Start carbon dioxide recycle pump 17, simulate site operation discharge capacity, constitute test loop, monitoring flowmeter 19 shows number
Value adjusts the rotating speed required when sediment transport revolution speed of screw to site operation, passes through taking for 4 observation of liquid state carbon dioxide of transparent testing tube
Sand situation recycles 1min after discharge capacity stabilization, records pressure sensor and pressure sensor numerical value, then this size pipeline
Load fluid friction test finishes；
3）Recurrent state is kept, second in four test valves 3 is opened（Others are closed）, the monitoring display number of flowmeter 19
Value, that observes transparent 4 liquid carbon dioxide of testing tube of the size takes sand situation, after discharge capacity stabilization, recycles 1min, records pressure
26 numerical value of sensor 1 and pressure sensor, the load fluid friction test of this size pipeline finish；
4）Repeat step 3）, the load fluid frictional resistance under other sizes caliber can be measured.
Embodiment 4：
A kind of closed mixing device method for testing performance of carbon dioxide is present embodiments provided, is filled using the closed mulling of carbon dioxide
Device for detecting performance is set, is included the following steps：
Step 1）The closed mixing device device for detecting performance pressurising of carbon dioxide：Carbon dioxide slot is connected by unloading interface 24
Vehicle opens test access main valve 2, knockout drum inlet valve 8, carbon dioxide recycle pump group, interior cycle main valve 22, fills recovery unit
Carbon dioxide unloading pump 29 and two filling valves 28, gas phase filling valve 32 in 36 carry out pressurising, until pressure sensor is shown
Numerical value is consistent with carbon dioxide tank vehicle pressure；
Step 2）Knockout drum 9 fills liquid phase：Gas phase filling valve 32, knockout drum inlet valve 8 are closed, liquid phase filling valve 31, portion are opened
Knockout drum air bleeding valve 10 is separately opened, starts carbon dioxide unloading pump 29, liquid phase in carbon dioxide tank vehicle is transferred to knockout drum 9
It is interior, when 9 liquid level of knockout drum reaches setting liquid level, closes carbon dioxide unloading and pump 29, two filling valves 28, liquid phase filling valves
31, filling liquid is completed；
Step 3）Closed 23 air-leakage test of mixing device of carbon dioxide：By communication apparatus and the closed mixing device of carbon dioxide 23
Connection, opening fill recovery unit 36, gas phase filling valve 32, the use of the gas phase in knockout drum 9 are that the closed mulling of carbon dioxide fills
23 pressurisings are set, waits for that closed 23 pressure of mixing device of carbon dioxide rises to 0.4MPa, the sealing of each connecting portion is checked with suds
Property, two filling valves 28 are closed if having leakage, are vented closed 23 pressure of mixing device of carbon dioxide, re-secure leak
Position；It repeats the above steps, until the equal No leakage of all sites；
Step 4）Closed 23 pressurising of mixing device of carbon dioxide：In step 2）On the basis of, continue with 9 gas phase of knockout drum to be dioxy
Change closed 23 pressurising of mixing device of carbon, until the closed mixing device 23 of carbon dioxide is consistent with the pressure in knockout drum 9, closing two
A filling valve 28；
Step 5）Closed 23 filling liquid of mixing device of carbon dioxide：Gas phase filling valve 32 is closed, liquid phase filling valve 31 is opened, fills back
Two recovery valves 27 in unit 36 are received, by the exhaust valve open of the closed mixing device of carbon dioxide 23 to 30%, start carbon dioxide
Unloading pump 29 closes carbon dioxide unloading to closed 23 internal-filling liquid of mixing device of carbon dioxide when liquid level reaches setting liquid level
29, two recovery valves 27, liquid phase filling valves 31 are pumped, filling liquid is completed；
Step 6）Load fluid frictional resistance measures：Open test access main valve 2, friction test unit 35, knockout drum inlet valve 8, test
Main valve 20 is exported, carbon dioxide recycle pump group is started, simulates site operation discharge capacity, monitors the display numerical value of flowmeter 19, adjustment
The rotating speed required when sediment transport revolution speed of screw to the site operation of the closed mixing device of carbon dioxide 23, passes through friction test unit 35
In transparent testing tube 4 observation of liquid state carbon dioxide take sand situation, after discharge capacity stabilization, recycle 1min, record pressure sensing
The numerical value of device obtains load fluid frictional resistance.
Further include after load fluid frictional resistance measures, unloading interface 24 being connect with carbon dioxide tank vehicle, by the liquid in knockout drum 9
Mutually it is recycled in carbon dioxide tank vehicle.
The foregoing examples are only illustrative of the present invention, does not constitute the limitation to protection scope of the present invention, all
Be with the present invention it is same or analogous design all belong to the scope of protection of the present invention within.The component that embodiment does not describe in detail
With the well-known components and common structure or conventional means of the structure category industry, do not describe one by one here.
Claims (10)
1. a kind of closed mixing device device for detecting performance of carbon dioxide, it is characterised in that：Including being sequentially connected shape by pipeline
At the knockout drum in circuit（9）, carbon dioxide recycle pump group and friction test unit（35）And communication apparatus, the friction test list
Member（35）Input end be connected with the outlet end of carbon dioxide recycle pump group, the friction test unit（35）Input end and
Outlet end is respectively equipped with pressure sensor one（1）With pressure sensor two（6）；
The knockout drum（9）It is communicated with unloading interface by pipeline（24）, the pipeline be equipped with fill recovery unit（36）；It is described
Carbon dioxide recycle pump group includes at least two carbon dioxide recycle pumps in parallel（17）, the communication apparatus and carbon dioxide are close
Close mixing device（23）Connection, the pipeline between the communication apparatus and carbon dioxide recycle pump group are equipped with flowmeter（19）,
The communication apparatus and friction test unit（35）Between be equipped with test access main valve（2）, the communication apparatus and carbon dioxide
Test outlet main valve is equipped between cycle pump group（20）.
2. the closed mixing device device for detecting performance of a kind of carbon dioxide according to claim 1, it is characterised in that：It is described
Friction test unit（35）Including multiple test valves（3）With transparent testing tube（4）, multiple transparent testing tubes（4）It is set up in parallel, surveys
Try valve（3）With transparent testing tube（4）It is connected to and is corresponded by pipeline.
3. the closed mixing device device for detecting performance of a kind of carbon dioxide according to claim 1, it is characterised in that：It is described
Fill recovery unit（36）It is pumped including carbon dioxide unloading（29）, two filling valves（28）, two recovery valves（27）, two fill
Valve（28）It is pumped respectively with carbon dioxide unloading（29）Both ends are connected by pipeline, described two recovery valves（27）One end pass through pipe
Line is connected in parallel on carbon dioxide unloading pump（29）With close knockout drum（9）The filling valve of side（28）Between, described two recovery valves
（27）The other end be connected in parallel on respectively close to knockout drum（9）The filling valve of side（28）Both ends.
4. the closed mixing device device for detecting performance of a kind of carbon dioxide according to claim 1, it is characterised in that：It is described
Friction test unit（35）And knockout drum（9）Between be equipped with knockout drum inlet valve（8）, the friction test unit（35）Import
Interior cycle main valve is equipped between end and the outlet end of carbon dioxide recycle pump group（22）；
It is described to fill recovery unit（36）And knockout drum（9）Between be equipped with liquid phase filling valve（31）With gas phase filling valve（32）, institute
State liquid phase filling valve（31）With gas phase filling valve（32）It is set up in parallel, the test exports main valve（20）With interior cycle main valve（22）
Connection flowmeter side by side（19）.
5. the closed mixing device device for detecting performance of a kind of carbon dioxide according to claim 4, it is characterised in that：Also wrap
Include surge tank（12）, the surge tank（12）Set on knockout drum（9）Between carbon dioxide recycle pump group, the surge tank（12）
It is equipped with surge tank tapping valve（30）；
The surge tank（12）Both ends respectively with knockout drum（9）It is connected to by pipeline with carbon dioxide recycle pump group, the buffering
Tank（12）With knockout drum（9）Between connecting pipeline be equipped with communicating valve（11）, the carbon dioxide recycle pump（17）Distinguish at both ends
Equipped with pump entry valve（16）And outlet valve of circulating pump（18）.
6. the closed mixing device device for detecting performance of a kind of carbon dioxide according to claim 1, it is characterised in that：Also wrap
It includes and is set to knockout drum（9）The auger conveyor of lower part（14）, the auger conveyor（14）One end and knockout drum（9）It communicates, separately
One end is communicated with proppant batch meter（15）, the knockout drum（9）It is interior to be equipped with strainer.
7. the closed mixing device device for detecting performance of a kind of carbon dioxide according to claim 1, it is characterised in that：It is described
Communication apparatus includes connection bend pipe one（34）Be connected to bend pipe two（37）, the connection bend pipe two（37）Be connected to bend pipe one（34）
It is separately connected the closed mixing device of carbon dioxide（23）Upper and lower side, the connection bend pipe two（37）Be connected to bend pipe one（34）
For more and it is set up in parallel.
8. the closed mixing device device for detecting performance of a kind of carbon dioxide according to claim 4, it is characterised in that：Also wrap
Include pressure sensor three（26）, the pressure sensor three（26）Set on friction test unit（35）With carbon dioxide recycle pump group
Between pipeline on.
9. a kind of closed mixing device method for testing performance of carbon dioxide, closed mixed using the carbon dioxide described in claim 5
Sand device device for detecting performance, which is characterized in that include the following steps：
Step 1）The closed mixing device device for detecting performance pressurising of carbon dioxide：Pass through unloading interface（24）Connect carbon dioxide slot
Vehicle opens knockout drum inlet valve（8）, communicating valve（11）, pump entry valve（16）, outlet valve of circulating pump（18）, interior cycle it is total
Valve（22）, test valve（3）, gas phase filling valve（32）It is detected the inside pressurising of device, until pressure sensor one（1）And pressure
Force snesor two（6）Show that numerical value is consistent with carbon dioxide tank vehicle pressure；
Step 2）Knockout drum（9）, surge tank（12）Fill liquid phase：Close pump entry valve（16）, knockout drum inlet valve（8）,
Opening fills recovery unit（36）In two filling valves（28）, liquid phase filling valve（31）, open knockout drum air bleeding valve（10）, it is slow
Rush tank air bleeding valve（13）To 30%, start carbon dioxide unloading pump（29）, liquid phase in carbon dioxide tank vehicle is transferred to knockout drum
（9）And surge tank（12）It is interior, work as knockout drum（9）Liquid level reaches 1300mm, surge tank（12）When liquid level reaches 1700mm, two are closed
Carbonoxide unloading pumps（29）, two filling valves（28）, liquid phase filling valve（31）, filling liquid completion；
Step 3）The closed mixing device of carbon dioxide（23）Air-leakage test：By communication apparatus and the closed mixing device of carbon dioxide
（23）Connection, opening fill recovery unit（36）, gas phase filling valve（32）, use knockout drum（9）In gas phase be carbon dioxide
Closed mixing device（23）Pressurising waits for the closed mixing device of carbon dioxide（23）Pressure rises to 0.4MPa, is checked with suds each
The leakproofness of connecting portion closes two filling valves if having leakage（28）, it is vented the closed mixing device of carbon dioxide（23）Pressure
Power re-secures leakage position；It repeats the above steps, until the equal No leakage of all sites；
Step 4）The closed mixing device of carbon dioxide（23）Pressurising：In step 2）On the basis of, continue to use knockout drum（9）Gas phase is
The closed mixing device of carbon dioxide（23）Pressurising, until the closed mixing device of carbon dioxide（23）With knockout drum（9）Interior pressure
Unanimously, two filling valves are closed（28）；
Step 5）The closed mixing device of carbon dioxide（23）Filling liquid：Close gas phase filling valve（32）, open liquid phase filling valve（31）、
Fill recovery unit（36）In two recovery valves（27）, by the closed mixing device of carbon dioxide（23）Exhaust valve open to 30%,
Start carbon dioxide unloading pump（29）, to the closed mixing device of carbon dioxide（23）Internal-filling liquid, when liquid level reaches setting liquid level
Close carbon dioxide unloading pump（29）, two recovery valves（27）, liquid phase filling valve（31）, filling liquid completion；
Step 6）Load fluid frictional resistance measures：Open test access main valve（2）, friction test unit（35）, knockout drum inlet valve
（8）, test outlet main valve（20）, start carbon dioxide recycle pump group, simulate site operation discharge capacity, monitor flowmeter（19）It is aobvious
Registration value adjusts the closed mixing device of carbon dioxide（23）Sediment transport revolution speed of screw to site operation when desired rotating speed, pass through
Friction test unit（35）In transparent testing tube（4）Observation of liquid state carbon dioxide takes sand situation, after discharge capacity stabilization, cycle
1min records the numerical value of pressure sensor, obtains load fluid frictional resistance.
10. the closed mixing device method for testing performance of a kind of carbon dioxide according to claim 9, it is characterised in that：Also
After being measured including load fluid frictional resistance, by unloading interface（24）It is connect with carbon dioxide tank vehicle, by knockout drum（9）Interior liquid phase recycling
To carbon dioxide tank vehicle.
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