CN107942000A - A kind of mining multifunctional modularization carbon dioxide foaming crushing test method - Google Patents
A kind of mining multifunctional modularization carbon dioxide foaming crushing test method Download PDFInfo
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- CN107942000A CN107942000A CN201711137977.8A CN201711137977A CN107942000A CN 107942000 A CN107942000 A CN 107942000A CN 201711137977 A CN201711137977 A CN 201711137977A CN 107942000 A CN107942000 A CN 107942000A
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- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 title claims abstract description 153
- 229910002092 carbon dioxide Inorganic materials 0.000 title claims abstract description 79
- 239000001569 carbon dioxide Substances 0.000 title claims abstract description 74
- 238000005187 foaming Methods 0.000 title claims abstract description 40
- 238000010998 test method Methods 0.000 title claims abstract description 25
- 238000005065 mining Methods 0.000 title claims abstract description 20
- 239000003245 coal Substances 0.000 claims abstract description 131
- 239000006260 foam Substances 0.000 claims abstract description 97
- 239000012530 fluid Substances 0.000 claims abstract description 88
- 239000007788 liquid Substances 0.000 claims abstract description 76
- 238000012360 testing method Methods 0.000 claims abstract description 61
- 238000004088 simulation Methods 0.000 claims abstract description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 29
- 238000003860 storage Methods 0.000 claims description 22
- 238000002474 experimental method Methods 0.000 claims description 9
- 239000000463 material Substances 0.000 claims description 9
- 238000010438 heat treatment Methods 0.000 claims description 6
- 230000003014 reinforcing effect Effects 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 11
- 230000009471 action Effects 0.000 abstract description 2
- 229960004424 carbon dioxide Drugs 0.000 description 50
- 230000000694 effects Effects 0.000 description 11
- 230000035699 permeability Effects 0.000 description 5
- 230000008859 change Effects 0.000 description 4
- 239000003795 chemical substances by application Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 229910002090 carbon oxide Inorganic materials 0.000 description 2
- 230000006837 decompression Effects 0.000 description 2
- 238000011156 evaluation Methods 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 238000011835 investigation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000003667 anti-reflective effect Effects 0.000 description 1
- 238000005422 blasting Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000015271 coagulation Effects 0.000 description 1
- 238000005345 coagulation Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000004382 potting Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000007634 remodeling Methods 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 239000000565 sealant Substances 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
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- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/25—Methods for stimulating production
- E21B43/26—Methods for stimulating production by forming crevices or fractures
- E21B43/267—Methods for stimulating production by forming crevices or fractures reinforcing fractures by propping
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- Chemical & Material Sciences (AREA)
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- General Life Sciences & Earth Sciences (AREA)
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Abstract
The present invention relates to a kind of mining multifunctional modularization carbon dioxide foaming crushing test method, belongs to coal bed fracturing simulation experiment method technical field, solves the technical problem of the test of fracturing fluid property and fracture simulation, carries out successively as follows：A, start gas supply station, driving gas is passed through in booster pump；B, constant-temperature high-pressure foam solution property test module is pressed into after pressurized liquid carbon dioxide is mixed with high pressure fracture liquid；C, high-pressure carbon dioxide foam fracturing fluid is pressed into mixed with proppants module after constant-temperature high-pressure foam solution property test module, and high-pressure carbon dioxide foam fracturing fluid is sufficiently mixed with the proppant dosed in mixed with proppants module；D, the high-pressure carbon dioxide foam fracturing fluid with proppant is pressed into coal bed fracturing analog module by pipeline.The formula furtherd investigate suitable for the carbon dioxide foaming liquid in colliery is improved the present invention and Performance, the selection of proppant and carbon dioxide foaming fracturing fluid are great for the anti-reflection action value in coal seam.
Description
Technical field
The invention belongs to coal bed fracturing simulation experiment method technical field, and in particular to a kind of mining multifunctional modularization two
Carbonoxide foam fracturing test method, Modular trial system and its experimental rig.
Background technology
At present, in the severe and great casualty of colliery, gas accident remains as major accident, and therefore, gas control is current colliery
The top priority of trouble free service, the gas pumping of this layer of working seam is carried out in underground, for preventing gas accident, is ensured
It is particularly important that mine safety production.
For low air permeability coal seam, when taking out coal-bed gas in advance using conventional bore arrangement mode and parameter, often
Required gas drainage results are not reached.For this reason, it may be necessary to using enhanced gas extraction gas method, artificially force original in communication coal seam
Fracture Networks produce new Fracture Networks, make the gas permeability of coal body increase.At present, China's enhanced gas extraction gas method mainly has
Protective coat extracted technology, water conservancy punching techniques, ground hydraulic fracturing technology, hydraulic turbulence, Deephole pre-splitting blasting technology etc..
CO2Foam fracturing is used widely as a kind of new fracturing technique in petroleum industry.CO2Foam fracturing it is excellent
Point is that aqueous fracturing fluid dosage is few, small to stratum and Damage to Fractures, and foam quality is high, and bubble is in continuous phase, viscosity is high, takes grittiness
Can be good.CO2Proppant is added in foam fracturing to be entered with fracturing fluid in the gap of fracturing, prevent pressure break seam
After crack due to ground pressure etc. reason crack is re-closed.Proppant can further improve the anti-reflection effect of fracturing fluid seam
Fruit.
Now by CO2Foam Fracturing Technique be introduced into coal bed fracturing it is anti-reflection in, it is necessary to targetedly adjust pressure break formula of liquid and
Proportioning, develops carbon dioxide foaming fracturing fluid and proppant suitable for coal seam, and simulates pressure break, root by testing progress coal seam
Fracturing fluid quality is evaluated according to pressure break antireflective effect.Therefore it is badly in need of developing a whole set of carbon dioxide foaming under high temperature and high pressure environment
Properties evaluations device, mixed with proppants device, coal bed fracturing simulator and its multifunctional modular carbon dioxide foaming pressure break
The method of experiment, studies coal bed fracturing experiment.
The content of the invention
The present invention overcomes the shortcomings of the prior art, solves CO2Foam fracturing fluid property is tested and coal bed fracturing simulation
Technical problem, it is desirable to provide it is a kind of quick, efficiently, intuitively carry out gas permeability before and after no proppant fracturing fluid pressure break, pressure break
Test（Evaluation of Fracturing Effect on Compact Sandstone）, add the mining multifunctionals of the multiple functions such as proppant pressure break, the test of high temperature and pressure foam property
Modularization carbon dioxide foaming crushing test method.
The present invention is achieved by following technical solution.
A kind of mining multifunctional modularization carbon dioxide foaming crushing test method, carries out successively as follows：
A, the gas outlet of gas supply station is connected with the air inlet of booster pump, the liquid outlet and pressure break liquid storage tank of liquid carbon dioxide storage tank
Liquid outlet connected respectively with the inlet of booster pump, the liquid outlet of two booster pumps is through three-limb tube and constant-temperature high-pressure foam
The inlet connection of fluidity matter test module, liquid outlet and the mixed with proppants module of constant-temperature high-pressure foam solution property test module
Inlet connection, the liquid outlet of mixed with proppants module connects with the inlet of coal bed fracturing analog module；Start gas supply station,
Driving gas is passed through in booster pump；
B, the fracturing fluid in the liquid carbon dioxide in liquid carbon dioxide storage tank and pressure break liquid storage tank is pressurized through booster pump respectively,
Pressurized liquid carbon dioxide forms carbon dioxide foaming fracturing fluid, high pressure dioxy with high pressure fracture liquid after three-limb tube mixes
Change carbon foam fracturing fluid press-in constant-temperature high-pressure foam solution property test module, adjust in constant-temperature high-pressure foam solution property test module
Water bath, apparent condition and half-life period of the observation test foam solution in different water baths；
C, high-pressure carbon dioxide foam fracturing fluid is pressed into mixed with proppants module after constant-temperature high-pressure foam solution property test module,
High-pressure carbon dioxide foam fracturing fluid is sufficiently mixed with the proppant dosed in mixed with proppants module；
D, the high-pressure carbon dioxide foam fracturing fluid with proppant is pressed into coal bed fracturing analog module by pipeline, in real time dynamic
Observe coal bed fracturing simulation test procedure.
Further, the water bath in the step b is the water bath with thermostatic control environment according to subsurface temperature environmental simulation.
Further, some constant-temperature high-pressure foam solution property test module, coal bed fracturing analog module and the proppants
Mixing module needs to be combined according to experiment；The booster pump is Pneumatic piston booster pump.
Further, the constant-temperature high-pressure foam solution property test module includes water bath with thermostatic control chamber, foam solution property is tested
Cavity, fracturing fluid enter pipe two and fracturing fluid outlet pipe two, and the foam solution property test cavity is airtight cavity, the water bath with thermostatic control
Constant temperature liquid is added with chamber, the foam solution property test cavity is arranged in water bath with thermostatic control chamber, and fracturing fluid enters pipe two and passes through successively
Wear the bottom surface of water bath with thermostatic control chamber and foam solution property test cavity and connected with the inside of foam solution property test cavity, fracturing fluid
Outlet pipe two is arranged at the top surface of foam solution property test cavity and is connected with the inside of foam solution property test cavity, and fracturing fluid goes out
Pressure gauge and draining valve are provided with pipe two；The side wall of the water bath with thermostatic control chamber is made of clear material, and foam solution property is surveyed
The side wall of examination cavity is provided with transparent foam solution observation window, and scale is provided with the foam solution observation window.
Further, the coal bed fracturing analog module includes heating and control device, moulded coal cavity, inlet tube, pressure break
Pipe, outlet tube one, outlet tube two and the anti-arranging device of release, moulded coal cavity top are provided with opening, and open-mouth is covered with moulded coal chamber
Body upper cover, the bottom surface of moulded coal cavity and the side of surrounding are integrally formed, and the heating is coated on moulded coal cavity with control device
On outer wall；The pressure break pipe is arranged on moulded coal cavity and extends to the center portion of moulded coal cavity, and reinforcing ring is provided with pressure break pipe,
One end of pressure break pipe is connected through the side side wall of moulded coal cavity with the inlet tube one, is provided with that release is counter to arrange on inlet tube one
Device, is provided with to unload on the anti-arranging device of release and compresses switch, and the leakage fluid dram of the anti-arranging device of release is connected with relief tube；The outlet tube
One is arranged on the side wall of the moulded coal cavity of pressure break pipe opposite side, side wall and moulded coal cavity of the outlet tube one through moulded coal cavity
Inside connection；The outlet tube two is connected through moulded coal cavity upper cover with the inside of moulded coal cavity；Filled out in the moulded coal cavity
Filled with moulded coal, pressure gauge, flowmeter and controlled valve are mounted on the inlet tube, outlet tube one and outlet tube two；It is described
The side wall of moulded coal cavity is made of clear material.
Further, the side wall of the inlet tube and outlet tube two is fixedly connected with corresponding moulded coal cavity wall respectively,
The side wall of the outlet tube one is fixedly connected with moulded coal cavity upper cover.
Further, the depth that the pressure break pipe is extended in moulded coal cavity is 500mm.
Further, the moulded coal cavity upper cover is fixed on the open-mouth of moulded coal cavity, moulded coal cavity by fastening bolt
Seal gasket is provided between upper cover and the opening of moulded coal cavity.
Further, the mixed with proppants module is including on mixed with proppants cavity, mixer, mixed with proppants cavity
Lid, fracturing fluid outlet pipe one and fracturing fluid enter pipe one, and the mixed with proppants cavity top is provided with opening, and open-mouth is covered with branch
Agent mixing chamber upper cover is supportted, seal gasket is provided between mixed with proppants cavity upper cover and the opening of mixed with proppants cavity,
Stent is provided with the middle part of mixed with proppants cavity, the mixer is arranged at the lower section of stent, and mixer is what Open Side Down
Proppant has been dosed in cone, mixed with proppants cavity lower part；The fracturing fluid enters the bottom that pipe always wears proppant mixing chamber
Face is simultaneously extended in mixed with proppants cavity, and the fracturing fluid outlet pipe one runs through the mixed with proppants cavity upper cover and proppant
The inside connection of mixing chamber, side wall and the mixed with proppants cavity upper cover of fracturing fluid outlet pipe one are integrally formed；The proppant
The side wall of mixing chamber is made of clear material.
Further, the length that the fracturing fluid enters that pipe one is extended into mixed with proppants cavity is 50mm.
The present invention has the advantages that compared with prior art.
A kind of mining multifunctional modularization carbon dioxide foaming crushing test method provided by the invention, test platform cost
Low, practical function is simple in structure, the constant-temperature high-pressure foam solution property test module that is provided in test platform, coal bed fracturing simulation
Module needs to be combined with mixed with proppants module according to experiment, covers the anti-reflection foam in carbon dioxide foaming pressure break coal seam
Fluidity matter investigates stage, proppant effect expedition stage and foam solution fracturing effect and investigates the stage, and further investigation is suitable for
The formula of the carbon dioxide foaming liquid in colliery improves and Performance, the selection of proppant and carbon dioxide foaming fracturing fluid pair
In coal seam, anti-reflection action value is great.
Brief description of the drawings
Fig. 1 is overall structure diagram of the present invention.
Fig. 2 is the partial enlargement schematic cross-sectional view of constant-temperature high-pressure foam solution property test module in Fig. 1.
Fig. 3 is the partial enlargement schematic cross-sectional view of coal bed fracturing analog module in Fig. 1.
Fig. 4 is the partial enlargement schematic cross-sectional view of mixed with proppants module in Fig. 1.
Fig. 5 is the overall structure diagram of embodiment two.
Fig. 6 is the overall structure diagram of embodiment three.
In figure, 1 is gas supply station, and 2 be booster pump, and 3 be constant-temperature high-pressure foam solution property test module, and 31 be water bath with thermostatic control
Chamber, 32 test cavity for foam solution property, and 33 be foam solution observation window, and 34 be scale, and 35 be fracturing fluid outlet pipe two, and 36 be pressure break
Liquid enters pipe two, and 41 be liquid carbon dioxide storage tank, and 42 be pressure break liquid storage tank, and 5 be coal bed fracturing analog module, and 51 be heating and control
Device processed, 52 be moulded coal cavity, and 53 be inlet tube, and 54 be pressure break pipe, and 55 be reinforcing ring, and 56 be moulded coal cavity upper cover, and 57 be
Liquid pipe one, 58 be outlet tube two, and 59 be the anti-arranging device of release, and 6 be mixed with proppants module, and 61 be mixed with proppants cavity, 62
It is stent for mixer, 63,64 be mixed with proppants cavity upper cover, and 65 be fracturing fluid outlet pipe one, and 66 enter pipe one for fracturing fluid.
Embodiment
Embodiment one
As shown in Figures 1 to 4, stage, support are investigated in order to cover the anti-reflection foam solution property in carbon dioxide foaming pressure break coal seam
Agent effect expedition stage and foam solution fracturing effect investigate the stage, to furtheing investigate the carbon dioxide foaming liquid suitable for colliery
Formula improve and Performance, the selection of proppant and carbon dioxide foaming fracturing fluid are for the anti-reflection effect in coal seam, this
By constant-temperature high-pressure foam solution property test module 3, coal bed fracturing analog module 5 and mixed with proppants module 6 in embodiment one
All added in pilot system, specific connection structure is as follows：
The gas outlet of gas supply station 1 is connected with the air inlet of booster pump 2, and the booster pump 2 is Pneumatic piston booster pump, liquid two
The inlet of the liquid outlet of carbonoxide storage tank 41 and the liquid outlet of pressure break liquid storage tank 42 respectively with booster pump 2 connects, two superchargings
The liquid outlet of pump 2 is connected by three-limb tube with the inlet of constant-temperature high-pressure foam solution property test module 3, constant-temperature high-pressure bubble
The liquid outlet of foam fluidity matter test module 3 is connected with the inlet of mixed with proppants module 6, and mixed with proppants module 6 goes out liquid
Mouth is connected with the inlet of coal bed fracturing analog module 5, and each module connects and composes pilot system, wherein：
The constant-temperature high-pressure foam solution property test module 3 includes water bath with thermostatic control chamber 31, foam solution property test cavity 32, pressure break
Liquid enters pipe 2 36 and fracturing fluid outlet pipe 2 35, and the foam solution property test cavity 32 is airtight cavity, the water bath with thermostatic control chamber
Constant temperature liquid is added with 31, the foam solution property test cavity 32 is arranged in water bath with thermostatic control chamber 31, and fracturing fluid enters pipe 2 36
Sequentially pass through the bottom surface of water bath with thermostatic control chamber 31 and foam solution property test cavity 32 and tested with foam solution property in cavity 32
Portion connects, and fracturing fluid outlet pipe 2 35 is arranged at the top surface of foam solution property test cavity 32 and tests cavity 32 with foam solution property
Inside connection, be provided with pressure gauge and draining valve in fracturing fluid outlet pipe 2 35；The side wall of the water bath with thermostatic control chamber 31 is by saturating
Bright material is made, and the side wall of foam solution property test cavity 32 is provided with transparent foam solution observation window 33, and the foam solution is seen
Examine and scale 34 is provided with window 33；The carbon dioxide foaming liquid of certain volume enters pipe 2 36 through fracturing fluid by booster pump 2 and is passed through
Constant-temperature high-pressure foam solution property test module 3, can be surveyed in the situation in high pressure and different bath temperature environment Imitating stratum
The performances such as the half-life period of foam solution are tried, also observable apparent condition of foam solution etc. under this environmental condition；Steep in the prior art
The property of foam liquid is investigated under atmospheric pressure and normal temperature environment, can actual foam solution be in high pressure even the condition of high temperature, by
In the difference of environment, the property of foam solution also has very big change, therefore the constant-temperature high-pressure foam solution provided in the present embodiment one
Property test module 3 can preferably test the property of the foam solution under high temperature and high pressure environment；
The coal bed fracturing analog module 5 includes heating and control device 51, moulded coal cavity 52, inlet tube 53, pressure break pipe 54, goes out
Liquid pipe 1, outlet tube 2 58 and the anti-arranging device 59 of release, 52 top of moulded coal cavity are provided with opening, and open-mouth is covered with moulded coal
Cavity upper cover 56, the bottom surface of moulded coal cavity 52 and the side of surrounding are integrally formed, and the moulded coal cavity upper cover 56 is by fastening spiral shell
Bolt is fixed on the open-mouth of moulded coal cavity 52, and fluid sealant is provided between moulded coal cavity upper cover 56 and the opening of moulded coal cavity 52
Pad, the heating are coated on the outer wall of moulded coal cavity 52 with control device 51, simulate titanium dioxide under the different temperatures environment of underground
The fracturing effect of carbon foam fracturing fluid；The pressure break pipe 54 is arranged on moulded coal cavity 52 and extends to the heart of moulded coal cavity 52
Portion, the depth that pressure break pipe 54 is extended in moulded coal cavity 52 are 500mm, and reinforcing ring 55, the reinforcing are provided with pressure break pipe 54
Ring 55 is provided with 9 groups, this may dispense with the sealing of hole program of traditional crushing test, and can realize the effect of sealing of hole, very well
Ground prevents fracturing fluid before pressure break coal body layer just along the situation of pressure break pipe reflux decompression.Moulded coal is run through in one end of pressure break pipe 54
The side side wall of cavity 52 is connected with the inlet tube 1, the anti-arranging device 59 of release is provided with inlet tube 1, release is anti-
It is provided with to unload on arranging device 59 and compresses switch, the leakage fluid dram of the anti-arranging device 59 of release is connected with relief tube, and plug-hole proppant is with band
Pressure fracturing fluid reversely flows through pressure break pipe and is discharged by the anti-arranging device 59 of release, can solve the shape in increase mixed with proppants module 6
A large amount of proppants do not spread apart with pressure break crack under state, and in pressure break aperture, accumulation plug-hole phenomenon occurs；The outlet tube one
57 are arranged on the side wall of the moulded coal cavity 52 of 54 opposite side of pressure break pipe, outlet tube 1 through moulded coal cavity 52 side wall with
The inside connection of moulded coal cavity 52；The outlet tube 2 58 is connected through moulded coal cavity upper cover 56 with the inside of moulded coal cavity 52；
Moulded coal is filled with the moulded coal cavity 52, pressure is mounted on the inlet tube 53, outlet tube 1 and outlet tube 2 58
Table, flowmeter and controlled valve；The side wall of the moulded coal cavity 52 is made of clear material；This experiment module uses One In and Two Out
Pressure break pipe design, pipeline is fixed as one with corresponding moulded coal cavity side respectively, and is both provided with pressure and flowmeter,
The gas permeability change of coal body before and after pressure break can be investigated, and can be investigated respectively with pressure break hole in the same direction and vertical direction gas permeability
Changes in contrast；
The mixed with proppants module 6 includes mixed with proppants cavity 61, mixer 62, mixed with proppants cavity upper cover 64, pressure
Split liquid outlet pipe 1 and fracturing fluid enters pipe 1,61 top of mixed with proppants cavity is provided with opening, and open-mouth is covered with
Mixed with proppants cavity upper cover 64, is provided with close between mixed with proppants cavity upper cover 64 and the opening of mixed with proppants cavity 61
Potting pad, the middle part of mixed with proppants cavity 61 are provided with stent 63, and the mixer 62 is arranged at the lower section of stent 63, mixing
Device 62 is the cone that Open Side Down, and proppant has been dosed in 61 lower part of mixed with proppants cavity；The fracturing fluid enters pipe 1 and passes through
Wear the bottom surface of proppant mixing chamber 61 and extend in mixed with proppants cavity 61, fracturing fluid enters pipe 1 and extends into proppant
Length in mixing chamber 61 is 50mm, and the fracturing fluid outlet pipe 1 is through the mixed with proppants cavity upper cover 64 and support
The inside connection of agent mixing chamber 61, side wall and the mixed with proppants cavity upper cover 64 of fracturing fluid outlet pipe 1 are integrally formed；Institute
The side wall for stating mixed with proppants cavity 61 is made of clear material.
Further, the side wall of the inlet tube 53 and outlet tube 2 58 is fixed with corresponding moulded coal cavity wall connect respectively
Connect, the side wall of the outlet tube 1 is fixedly connected with moulded coal cavity upper cover 56.
A kind of mining multifunctional modularization carbon dioxide foaming crushing test method, carries out successively as follows：
A, above-mentioned pilot system is connected, starts gas supply station 1, driving gas is passed through in booster pump 2；
B, the fracturing fluid in the liquid carbon dioxide and pressure break liquid storage tank 42 in liquid carbon dioxide storage tank 41 is respectively through booster pump 2
Supercharging, pressurized liquid carbon dioxide form carbon dioxide foaming fracturing fluid with high pressure fracture liquid after three-limb tube mixes, high
Carbon dioxide foaming fracturing fluid press-in constant-temperature high-pressure foam solution property test module 3 is pressed, adjustment constant-temperature high-pressure foam solution property is surveyed
Water bath in die trial block 3, apparent condition and half-life period of the observation test foam solution in different water baths；According to stratum
The difference of depth, the pressure break temperature of Different Strata is simulated by different temperatures water bath, and further investigation is suitable for different pressure breaks
The formula of carbon dioxide foaming liquid in environment improves and Performance；
C, high-pressure carbon dioxide foam fracturing fluid is pressed into mixed with proppants module after constant-temperature high-pressure foam solution property test module 3
6, high-pressure carbon dioxide foam fracturing fluid is sufficiently mixed with the proppant dosed in mixed with proppants module 6；Pass through supercharging device
Fracturing fluid there is high pressure and high flow rate, high speed enter pipe 2 36 into fracturing fluid after, by the stop of mixer
Effect, fracturing fluid and the proppant of 32 bottom of foam solution property test cavity are sufficiently mixed, and are realized and are added in high pressure fracture liquid
The function of proppant.Add the side of proppant by constant-temperature high-pressure foam solution property test module 3 again using first supercharging fracturing fluid
Method, is directly mixed in the defects of proppant can not be by booster pump 2 in the fracturing fluid before solving before pressurization；
D, the high-pressure carbon dioxide foam fracturing fluid with proppant is pressed into coal bed fracturing analog module 5 by pipeline, dynamic in real time
State observes coal bed fracturing simulation test procedure.Wherein：Moulded coal is matched somebody with somebody according to intensity requirement using raw materials such as cement, gypsum, coal grain water
Production of shaped coal raw material, the opening then set by 52 top of moulded coal cavity add coagulation forming in moulded coal cavity 52.Moulded coal is solidifying
Admittedly be molded, the pressure break pipe that the inside of moulded coal cavity 52 is set is bundled together, and 9 groups of reinforcings are provided with pressure break pipe
Ring, eliminates the sealing of hole program of traditional crushing test, and can realize sealing of hole effect, prevents fracturing fluid in pressure break coal well
Just along the situation of pressure break pipe reflux decompression before body.
Embodiment two
As shown in figure 5, in order to study no proppant carbon dioxide foaming coal bed fracturing analog functuion, two are used in the present embodiment two
A booster pump 2 will be passed through in coal bed fracturing analog module 5 after liquid carbon dioxide and fracturing fluid supercharging respectively, intuitively observes nothing
The experiment process of proppant carbon dioxide foaming coal bed fracturing, specific connection structure are as follows：
It is respectively arranged with two gas supply stations 1 and two booster pumps 2, the gas outlet of one of gas supply station 1 and one of supercharging
The air inlet connection of pump 2, the gas outlet of another gas supply station 1 are connected with the air inlet of another booster pump 2, liquid carbon dioxide
Inlet of the liquid outlet of storage tank 41 and pressure break liquid storage tank 42 respectively with two booster pumps 2 connects, the liquid outlet of two booster pumps 2
Pilot system, the wherein structure of coal bed fracturing analog module 5 and implementation are connected and composed by threeway and coal bed fracturing analog module 5
It is identical described in example one.
A kind of mining multifunctional modularization carbon dioxide foaming crushing test method, carries out successively as follows：
A, above-mentioned pilot system is connected, starts gas supply station 1, driving gas is passed through in booster pump 2；
B, the fracturing fluid in the liquid carbon dioxide and pressure break liquid storage tank 42 in liquid carbon dioxide storage tank 41 is respectively through booster pump 2
Coal bed fracturing analog module 5, realtime dynamic observation coal bed fracturing simulation test procedure are pressed into after supercharging.
Embodiment three
As shown in fig. 6, in order to study the carbon dioxide foaming coal bed fracturing analog functuion with proppant, used in the present embodiment three
Two booster pumps 2 will be passed through coal bed fracturing simulation after liquid carbon dioxide and fracturing fluid supercharging through mixed with proppants module 6 respectively
In module 5, intuitively the experiment process of the carbon dioxide foaming coal bed fracturing of observation band proppant, specific connection structure are as follows：
It is respectively arranged with two gas supply stations 1 and two booster pumps 2, the gas outlet of one of gas supply station 1 and one of supercharging
The air inlet connection of pump 2, the gas outlet of another gas supply station 1 are connected with the air inlet of another booster pump 2, liquid carbon dioxide
Inlet of the liquid outlet of storage tank 41 and pressure break liquid storage tank 42 respectively with two booster pumps 2 connects, the liquid outlet of two booster pumps 2
Enter pipe 1 with the fracturing fluid of mixed with proppants module 6 by threeway to connect, liquid carbon dioxide, fracturing fluid and proppant exist
Experiment is connected and composed by fracturing fluid outlet pipe 1 and coal bed fracturing analog module 5 after being sufficiently mixed in mixed with proppants module 6
System, wherein coal bed fracturing analog module 5 and the structure of mixed with proppants module 6 are identical described in embodiment one.
A kind of mining multifunctional modularization carbon dioxide foaming crushing test method, carries out successively as follows：
A, above-mentioned pilot system is connected, starts gas supply station 1, driving gas is passed through in booster pump 2；
B, the fracturing fluid in the liquid carbon dioxide and pressure break liquid storage tank 42 in liquid carbon dioxide storage tank 41 is respectively through booster pump 2
Mixed with proppants module 6, pressurized liquid carbon dioxide and the branch dosed in fracturing fluid and mixed with proppants module 6 are pressed into after supercharging
Support agent is sufficiently mixed；
C, the high-pressure carbon dioxide foam fracturing fluid with proppant is pressed into coal bed fracturing analog module 5 by pipeline, dynamic in real time
State observes coal bed fracturing simulation test procedure.
The present invention can be embodied without departing from the spiritual or substantive of invention in a variety of forms, it should therefore be appreciated that on
State embodiment and be not limited to foregoing details, and should widely be explained in claim limited range, therefore fall into right
It is required that or the change in its equivalent scope and remodeling should be covered by the following claims.
Claims (10)
- A kind of 1. mining multifunctional modularization carbon dioxide foaming crushing test method, it is characterised in that as follows successively into OK：A, gas supply station（1）Gas outlet and booster pump（2）Air inlet connection, liquid carbon dioxide storage tank（41）Liquid outlet and Pressure break liquid storage tank（42）Liquid outlet respectively with booster pump（2）Inlet connection, two booster pumps（2）Liquid outlet through threeway Connecting tube and constant-temperature high-pressure foam solution property test module（3）Inlet connection, constant-temperature high-pressure foam solution property test module （3）Liquid outlet and mixed with proppants module（6）Inlet connection, mixed with proppants module（6）Liquid outlet and coal seam press Split analog module（5）Inlet connection；Start gas supply station（1）, driving gas is passed through booster pump（2）In；B, liquid carbon dioxide storage tank（41）In liquid carbon dioxide and pressure break liquid storage tank（42）In fracturing fluid respectively through increase Press pump（2）Supercharging, pressurized liquid carbon dioxide form carbon dioxide foaming pressure with high pressure fracture liquid after three-limb tube mixes Split liquid, high-pressure carbon dioxide foam fracturing fluid press-in constant-temperature high-pressure foam solution property test module（3）, adjust constant-temperature high-pressure foam Fluidity matter test module（3）In water bath, observation apparent condition of the test foam solution in different water baths and partly decline Phase；C, high-pressure carbon dioxide foam fracturing fluid is through constant-temperature high-pressure foam solution property test module（3）Mixed with proppants mould is pressed into afterwards Block（6）, high-pressure carbon dioxide foam fracturing fluid and mixed with proppants module（6）The proppant inside dosed is sufficiently mixed；D, the high-pressure carbon dioxide foam fracturing fluid with proppant is pressed into coal bed fracturing analog module by pipeline（5）, in real time Dynamic observation coal bed fracturing simulation test procedure.
- 2. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 1, its feature It is：Water bath in the step b is the water bath with thermostatic control environment according to subsurface temperature environmental simulation.
- 3. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 1, its feature It is：Some constant-temperature high-pressure foam solution property test modules（3）, coal bed fracturing analog module（5）With mixed with proppants mould Block（6）Need to be combined according to experiment；The booster pump（2）For Pneumatic piston booster pump.
- 4. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 1, its feature It is：The constant-temperature high-pressure foam solution property test module（3）Including water bath with thermostatic control chamber（31）, foam solution property test cavity （32）, fracturing fluid enter pipe two（36）With fracturing fluid outlet pipe two（35）, the foam solution property test cavity（32）For airtight cavity, The water bath with thermostatic control chamber（31）In be added with constant temperature liquid, the foam solution property tests cavity（32）It is arranged at water bath with thermostatic control chamber （31）In, fracturing fluid enters pipe two（36）Sequentially pass through water bath with thermostatic control chamber（31）Cavity is tested with foam solution property（32）Bottom surface simultaneously Cavity is tested with foam solution property（32）Inside connection, fracturing fluid outlet pipe two（35）It is arranged at foam solution property test cavity （32）Top surface and with foam solution property test cavity（32）Inside connection, fracturing fluid outlet pipe two（35）On be provided with pressure gauge And draining valve；The water bath with thermostatic control chamber（31）Side wall be made of clear material, foam solution property test cavity（32）Side Wall is provided with transparent foam solution observation window（33）, the foam solution observation window（33）On be provided with scale（34）.
- 5. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 1, its feature It is：The coal bed fracturing analog module（5）Including heating and control device（51）, moulded coal cavity（52）, inlet tube（53）, pressure Split pipe（54）, outlet tube one（57）, outlet tube two（58）With the anti-arranging device of release（59）, moulded coal cavity（52）Top is provided with spacious Mouthful, open-mouth is covered with moulded coal cavity upper cover（56）, moulded coal cavity（52）Bottom surface and the side of surrounding be integrally formed, it is described plus Heat and control device（51）It is coated on moulded coal cavity（52）Outer wall on；The pressure break pipe（54）It is arranged at moulded coal cavity（52）On And extend to moulded coal cavity（52）Center portion, pressure break pipe（54）On be provided with reinforcing ring（55）, pressure break pipe（54）One end run through Moulded coal cavity（52）Side side wall and the inlet tube one（53）Connection, inlet tube one（53）On be provided with the anti-arranging device of release （59）, the anti-arranging device of release（59）On be provided with to unload and compress switch, the anti-arranging device of release（59）Leakage fluid dram connected with relief tube；Institute State outlet tube one（57）It is arranged at pressure break pipe（54）The moulded coal cavity of opposite side（52）Side wall on, outlet tube one（57）Run through Moulded coal cavity（52）Side wall and moulded coal cavity（52）Inside connection；The outlet tube two（58）Through moulded coal cavity upper cover （56）With moulded coal cavity（52）Inside connection；The moulded coal cavity（52）It is interior to be filled with moulded coal, the inlet tube（53）, go out liquid Guan Yi（57）With outlet tube two（58）On be mounted on pressure gauge, flowmeter and controlled valve；The moulded coal cavity（52）Side Wall is made of clear material.
- 6. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 5, its feature It is：The inlet tube（53）With outlet tube two（58）Side wall be fixedly connected respectively with corresponding moulded coal cavity wall, it is described Outlet tube one（57）Side wall and moulded coal cavity upper cover（56）It is fixedly connected.
- 7. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 5, its feature It is：The pressure break pipe（54）Extend to moulded coal cavity（52）Interior depth is 500mm.
- 8. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 5, its feature It is：The moulded coal cavity upper cover（56）Moulded coal cavity is fixed on by fastening bolt（52）Open-mouth, moulded coal cavity upper cover （56）With moulded coal cavity（52）Opening between be provided with seal gasket.
- 9. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 1, its feature It is：The mixed with proppants module（6）Including mixed with proppants cavity（61）, mixer（62）, on mixed with proppants cavity Lid（64）, fracturing fluid outlet pipe one（65）Enter pipe one with fracturing fluid（66）, the mixed with proppants cavity（61）Top is provided with spacious Mouthful, open-mouth is covered with mixed with proppants cavity upper cover（64）, mixed with proppants cavity upper cover（64）With mixed with proppants cavity （61）Opening between be provided with seal gasket, mixed with proppants cavity（61）Middle part be provided with stent（63）, the mixing Device（62）It is arranged at stent（63）Lower section, mixer（62）For the cone that Open Side Down, mixed with proppants cavity（61）Under Proppant is dosed in portion；The fracturing fluid enters pipe one（66）Through mixed with proppants cavity（61）Bottom surface and extend to proppant Mixing chamber（61）In, the fracturing fluid outlet pipe one（65）Through the mixed with proppants cavity upper cover（64）With mixed with proppants Cavity（61）Inside connection, fracturing fluid outlet pipe one（65）Side wall and mixed with proppants cavity upper cover（64）It is integrally formed；Institute State mixed with proppants cavity（61）Side wall be made of clear material.
- 10. a kind of mining multifunctional modularization carbon dioxide foaming crushing test method according to claim 9, its feature It is：The fracturing fluid enters pipe one（66）Extend into mixed with proppants cavity（61）In length be 50mm.
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