CN206554907U - A kind of coal petrography softens active fracturing device - Google Patents
A kind of coal petrography softens active fracturing device Download PDFInfo
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- CN206554907U CN206554907U CN201720216187.8U CN201720216187U CN206554907U CN 206554907 U CN206554907 U CN 206554907U CN 201720216187 U CN201720216187 U CN 201720216187U CN 206554907 U CN206554907 U CN 206554907U
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Abstract
Soften active fracturing device the utility model discloses a kind of coal petrography, the pressure break mechanism connected including conveying mechanism and with conveying mechanism, conveying mechanism includes pipeline and the feeding unit, power unit and the adjustment unit that are successively set on pipeline, and pressure break mechanism is arranged on the output end of pipeline；Pressure break mechanism includes the hole packer treated pressure break pipe in pressure break coal petrography pressure break hole with pipeline communication and extending into and be arranged on pressure break pipe, and hole packer includes the first sealing of hole capsule and the second sealing of hole capsule that are arranged in pressure break hole.The utility model is simple in construction, reasonable in design, by by dust-proof water fracturing fluid or supercritical CO2Active fracturing liquid is used as fracturing fluid, input cost is relatively low, fracturing effect is good, fracturing fluid gas-liquid two-phase conversion and cycle can continue to increase pressure break energy, good fracturing effect is realized, the expansion of coal petrography CLAY MINERALS AND THEIR SIGNIFICANCE is effectively prevent, injury of the fracturing fluid to stratum is reduced, and then the permeability for treating pressure break coal petrography is improved, and work progress is easily controllable.
Description
Technical field
The utility model belongs to mining engineering and technology field, and active fracturing device is softened more particularly, to a kind of coal petrography.
Background technology
China's coal-mine mainly uses pit mining, and mining conditions are complicated, and operating environment is severe, Flood inducing factors are more, particularly
High stress, low-permeable and mechanical mining containing hard dirt band (tuberculosis) coal petrography, gas pumping, impact disaster and coal dust preventing and treating etc.
It is difficult to obtain effect.Permeability Oe Coal And Porous Rock And Fractured Rock depend primarily on the porosity of medium, underbead crack geometric properties, fracture fractal dimension,
Internal stress-strain state and pore pressure etc., these are considered as to influence the principal element of Permeability Oe Coal And Porous Rock And Fractured Rock, wherein first three
Individual is direct factor, and stress-strain state and pore pressure influence permeability by changing rock interior hole and crack.
Hydraulic fracturing and blast cracking technology are the anti-reflection effective ways of coal petrography, though the overall release of energy is anti-reflection, to a certain degree
Raising coal seam gas permeability and percentage of damage, but its poor for applicability, complex process, workload are big, it is often more important that these are arranged
The hydrophobicity of hypotonic coal petrography can not be solved by applying, it is impossible to strengthen the permeability and the property of softening of hypotonic coal petrography.It is embodied in：Waterpower pressure
Split technology and fracturing fluid is pressed into come pressure break coal petrography by force (forcing) pump by drilling, such a mode is due to the discharge capacity and its process characteristic of pump
Limitation, its pressure rise time is oversize, and loading velocity is slow, and surge pressure is low, so can be only formed a vertical minimum principal stress
The crackle in direction, this crackle is easy to extend along primary Weak face, is difficult new crackle of the generation perpendicular to aspect, is difficult crackle
Communicate with each other, therefore the gas permeability of coal petrography can not be dramatically increased.Even if water under high pressure can pressure break coal body, with the increasing of crack's volume
Plus, the pressure of fracturing fluid is also constantly reduced, rapid loss pressure break action potency.Other pressure break night ratio is also difficult to control to, and is distributed
Also uneven, hydrophily of coal petrography etc. can also influence the gas permeability of coal petrography, and its fracturing unit is complicated, and cost is also high, therefore not
It is adapted to raising drawing-off gas.Blast cracking technology is that colliery need to be placed in into drilling with safety explosive or high explosive, uses stemming
Explosion is implemented in closure, and this mode pressure rise time is short, and surge pressure is high, can produce countless short seams, but due to its blast pressure
Far above the yield strength of country rock, cause the wall of a borehole seriously to crush and collapse, formed residual pressure area " stress cage ", so as to reduce
Permeability.Other waterpower extrude measure, including：Hydrodynamic behavior, the release drainage beyond extending stress band, it is adaptable to cherry coal,
It is anti-reflection by loosening coal petrography release, it is impossible to be explained with hydraulic fracturing principle；Hydraulic slotted liner technique, is cut by high-pressure water jet in coal petrography
Stitch release anti-reflection；High pressure water injection, similar to hydraulic fracturing, but water injection pressure and water injection rate are limited, it is impossible to open big crack or
Crack is effectively extended, insertion.
The content of the invention
Technical problem to be solved in the utility model is that there is provided a kind of coal petrography for above-mentioned deficiency of the prior art
Soften active fracturing device, its is simple in construction, reasonable in design and good using easy to operate, using effect, by by dust-proof hydraulic pressure
Split liquid or supercritical CO2Active fracturing liquid is as the fracturing fluid for treating pressure break coal petrography, and input cost is relatively low, and fracturing effect is good, pressure
Pressure break energy can be continued to increase by splitting liquid gas-liquid two-phase conversion and cycle, realized good fracturing effect, be effectively prevent in coal petrography
The expansion of clay mineral, reduces injury of the fracturing fluid to stratum, and then improves the permeability for treating pressure break coal petrography, and constructs
Journey is easily controllable.
In order to solve the above technical problems, the technical solution adopted in the utility model is：Including conveying mechanism and with it is described defeated
The pressure break mechanism of mechanism connection is sent, the conveying mechanism includes pipeline and the feeding unit, the power that are successively set on pipeline
Unit and adjustment unit, the pressure break mechanism are arranged on the output end of pipeline；
The feeding unit includes being provided with pressure break agent feed tube and dust-proof water in first reactor, the first reactor
Feed tube, the adjustment unit includes check valve and the three-way connection connected with check valve；
The pressure break mechanism includes treating pressure break pipe in pressure break coal petrography pressure break hole with pipeline communication and extending into and is arranged on
Hole packer on the pressure break pipe, the hole packer includes the first sealing of hole capsule and the second hole sealing glue being arranged in pressure break hole
Capsule.
A kind of above-mentioned coal petrography softening active fracturing device, it is characterized in that：Also include connecting with first reactor second is anti-
Answer and be provided with supercritical liq CO in device, the second reactor2Feed tube.
A kind of above-mentioned coal petrography softening active fracturing device, it is characterized in that：The power unit is high pressure fracture pump, the height
The rated pressure for pressing fracturing pump is 80MPa~120MPa, and the flow of the high pressure fracture pump is 6m3/ h~14m3/h。
A kind of above-mentioned coal petrography softening active fracturing device, it is characterized in that：The pressure break pipe is located at the first sealing of hole capsule and the
Pipeline between two sealing of hole capsules is to be provided with multiple release apertures, Duo Gesuo on the releasing section of the pressure break pipe, the releasing section
Stating release aperture, helically line is laid on the releasing section, and cavity is provided between the releasing section and the inwall in pressure break hole, is noted
Liquid pipe one end is exposed outside pressure break hole, and the liquid injection pipe other end is extend into the cavity through the first sealing of hole capsule.
A kind of above-mentioned coal petrography softening active fracturing device, it is characterized in that：The pipeline is wire spirally-wound hose, the steel wire
A diameter of 30mm~135mm of spiral rubber hose, the compression strength of the wire spirally-wound hose is all higher than 120MPa；
A kind of above-mentioned coal petrography softening active fracturing device, it is characterized in that：Two joints of the three-way connection with it is described
Pipeline communication, another joint of three-way connection is provided with manual voltage regulation switch.
A kind of above-mentioned coal petrography softening active fracturing device, it is characterized in that：It is additionally provided with the pipeline described for discharging
The release of pipeline pressure.
A kind of above-mentioned coal petrography softening active fracturing device, it is characterized in that：Also include the pressure and stream to the power unit
The monitoring unit being monitored is measured, the monitoring unit includes controller and the power module powered for controller, the control
The input of device is connected with pressure monitoring module and flow monitoring module, and the output end of the controller is connected with display module,
Power control switch is serially connected between the power module and the controller.
The utility model has advantages below compared with prior art：
1st, the coal petrography softening active fracturing apparatus structure used is simple and simple for production, and input cost is relatively low.
2nd, used coal petrography softening active fracturing apparatus structure it is reasonable in design, including conveying mechanism and with the conveyer
Structure connection pressure break mechanism, the conveying mechanism include pipeline, the power unit being successively set on pipeline, adjustment unit and
The feeding unit at the entrance is connected to, the pressure break mechanism is connected to the outlet of the pipeline, and connection is easy.
3rd, the dust-proof water fracturing fluid that the fracturing fluid used mixes for pressure break agent with dust-proof water, or be dust-proof water fracturing fluid
With supercritical liq CO2The supercritical CO of mixing2Active fracturing liquid, input cost is relatively low, and fracturing effect is good, fracturing fluid gas-liquid
Two-phase conversion and cycle can continue to increase pressure break energy, realize good fracturing effect.Fracturing fluid injection coal petrography pressure break hole, pressure break
During the vaporization of a part of expanded by heating, make frac pressure continue to increase, pressure break crack is able to constantly extend；With fracturing fluid vapour
Change, the increase of caloric receptivity, partial open liquid is changed into the water barrier film of low viscosity, proppant is played a part of into coal petrography crack,
It is effective to prevent the closure in pressure break crack, and the three-state cycle conversion of fracturing fluid promotes frac pressure to continue to increase, and makes coal petrography
Pressure break crack scope constantly extends, until fracturing fluid majority is converted into gaseous state, or free state is present in coal petrography crack or competition is inhaled
Invest coal petrography；Face activating agent is dissolved in water, and generates weakly acidic carbonic acid with water reaction, and the reaction can reduce the pH of fracturing fluid
Value, effectively prevent the expansion of coal petrography CLAY MINERALS AND THEIR SIGNIFICANCE, reduce injury of the fracturing fluid to stratum, and then pressure break coal petrography is treated in raising
Permeability；Meanwhile, the construction technology that coal petrography softening active fracturing device carries out pressure break to coal petrography is simple relative to hydraulic fracturing,
There is preferable cooling-down effect to coal petrography simultaneously, and promote coal petrography CH4Decompose and absorb, effectively prevent the generation of security incident.
4th, the device cannot be only used for high stress, low-permeable and the pressure break containing hard dirt band (tuberculosis) coal petrography, but also can
For impacting in terms of diaster prevention and control, gas pumping.
5th, the device is reasonable in design and easy construction, using effect are good, with following several respects advantage：Firstth, construction effect
Rate is high：Precompressed is carried out before sealing of hole, makes to produce orientation crack in pressure break hole, efficiently controls pressure break hydraulic pressure in guiding pressure break hole
Direction is split, is conducive to the softening pressure break of coal petrography, the permeability of coal petrography is improved；Secondth, cost is low：After the completion of pressure break, pressure release is carried out,
Coal petrography is softened into the fracturing fluid in active fracturing device to be reclaimed, while coal petrography softening active fracturing device repeats profit
With, it is cost-effective, economize on resources；3rd, construction quality can control, incorporation time and stream in control fracturing fluid preparation process
Amount, it is ensured that the quality of fracturing fluid；The pressure that motivation of adjustment unit applies to fracturing fluid can be controlled by monitoring unit, led to simultaneously
Cross the fracturing fluid to whether being penetrated into detection hole hole or using portable gas mass concentration detector judge pressure break whether
Terminate；4th, working security is high, and the pressure break pipe between the first sealing of hole capsule and the second sealing of hole capsule is the release of pressure break pipe
Multiple release apertures are provided with section, releasing section, multiple release apertures on releasing section helically lay by line；Covered on first sealing of hole capsule
Provided with liquid injection pipe, one end of liquid injection pipe is arranged on the aperture in pressure break hole, and the other end is arranged on the first sealing of hole capsule and the second sealing of hole
Between capsule, the part between the first sealing of hole capsule and the second sealing of hole capsule is sealed, using double sealing of hole capsule (the first envelopes
Between hole capsule and the second sealing of hole capsule) forms of+sealing of hole slurries carries out sealing of hole, it is therefore intended that the fracturing fluid in pressure break hole is entered
Row pressurize (allows the pressure in pressure break hole to continue to raise), prevents that fracturing fluid overflows out of pressure break hole during pressure rise, to week
The operating personnel enclosed damages.
In summary, the utility model is simple in construction, reasonable in design and good using easy to operate, using effect, energy simplicity,
The work progress that coal petrography softens pressure break is efficiently accomplished, and work progress is easily controllable.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Brief description of the drawings
Fig. 1 is the structural representation of the utility model embodiment 1.
Fig. 2 is the use state schematic diagram of the utility model embodiment 1.
Fig. 3 is the structural representation of the utility model embodiment 2.
Fig. 4 is the use state schematic diagram of the utility model embodiment 2.
Fig. 5 is the schematic block circuit diagram of monitoring unit in the utility model.
Description of reference numerals:
1-1-first reactor；1-2-second reactor；2-pressure break agent feed tube；
3-1-dust-proof water feed tube；3-2-supercritical liq CO2Feed tube；
4-high pressure fracture pump；5-pipeline；6-pressure break pipe；
The sealing of hole capsules of 7-1-first；The sealing of hole capsules of 7-2-second；8-liquid injection pipe；
9-check valve；10-three-way connection；11-snap joint；
12-release；13-pressure break hole；14-detection hole；
15-treat pressure break coal petrography；16-pressure monitoring module；17-flow monitoring module；
18-controller；19-power module；20-power control is switched；21-aobvious
Show module.
Embodiment
A kind of coal petrography softening active fracturing device of the utility model is described in detail by embodiment 1 and embodiment 2：
Embodiment 1
As shown in Figure 1 and Figure 2 a kind of coal petrography softening active fracturing device, including conveying mechanism and with the conveying mechanism
The pressure break mechanism of connection, the conveying mechanism includes pipeline 5 and the feeding unit, the power unit that are successively set on pipeline 5
And adjustment unit, the pressure break mechanism is arranged on the output end of pipeline 5；
The feeding unit includes being provided with pressure break agent feed tube 2 on first reactor 1-1, the first reactor 1-1
With dust-proof water feed tube 3-1, the adjustment unit includes check valve 9 and the three-way connection 10 connected with check valve 9；
The pressure break mechanism include connecting with pipeline 5 and extend into treat pressure break pipe 6 in the pressure break hole 13 of pressure break coal petrography 15 and
Be arranged on the hole packer on the pressure break pipe 6, the hole packer include the first sealing of hole capsule 7-1 being arranged in pressure break hole 13 and
Second sealing of hole capsule 7-2.
In the present embodiment, after pressure break agent is mixed with dust-proof water in first reactor 1-1, enter dynamic by pipeline 5
Power unit, after power unit pressurizes to fracturing fluid, fracturing fluid enters pressure break pipe 6 by pipeline 5, treats pressure break coal petrography 15 and enters
Row pressure break, softens coal petrography, and then improves the permeability of coal petrography.
In the present embodiment, pressure break agent uses the application for a patent for invention of Patent No. 201010107229.7《A kind of coal petrography is soft
Change active fracturing agent》Disclosed in active fracturing reagent for softening coal rock, the dust-proof water is that domestic water or bank are treated
Waste water.
Coal petrography softens active fracturing device and pressure break is carried out to coal petrography for hydraulic fracturing, and there is preferably cooling to imitate to coal petrography
Really, and coal petrography CH is promoted4The advantages such as absorption are decomposed, gas explosion is effectively prevented, coal mining accident protection miner's person peace is reduced
Entirely.
When actual use, the power unit is arranged on the input of the pipeline 5.
When actual use, first reactor 1-1 (such as tank reactor and injection reactor) is for realizing liquid-liquid
The device of course of reaction.
When actual use, pressure break pipe 6 uses internal diameter for 50mm, wall thickness 5mm seamless steel pipe.
When actual use, pipeline 5 is connected with pressure break pipe 6 by snap joint 11.
The transport establishment and pressure break mechanism are to move tank car or mobile tank car as operating platform, when needing to treat pressure break
When coal petrography 15 carries out pressure break, coal petrography is softened into active fracturing device and connected on the operating platform of mobile tank car or mobile tank car
Connect, mobile tank car or mobile tank car are moved to and treat that the working face of pressure break coal petrography 15 is treated pressure break coal petrography 15 and pressed after the completion of connection
Split, easy construction and flexibility is strong.
In the present embodiment, pressure break coal petrography is treated using the dust-proof water fracturing fluid after pressure break agent and dust-proof water hybrid reaction as pressure break
15 medium, is transported dust-proof water fracturing fluid to mine using mobile tank car or mobile tank car, will be anti-using high pressure fracture pump 4
Dirt water fracturing fluid injection pressure break hole 13, and dust-proof water fracturing fluid in pressure break hole 13 is pressed, the orientation pressure produced in precompressed
The plane of weakness interior wall surface of the hole to pressure break hole 13 in crack produces internal pressure effect, cause the plane of weakness generation of directional fracturing crack extend, extend,
So that connection insertion occurs each other, the insertion Fracture Networks being interweaved are formed, realizes big to coal petrography hardness factor and contains
The safe pressure break of hard dirt band (tuberculosis) coal petrography, increases the cranny development of coal petrography, reaches raising Permeability Oe Coal And Porous Rock And Fractured Rock, mine volume increase and carries
The purpose of high lump coal output capacity.
In the present embodiment, the power unit is high pressure fracture pump 4, and the rated pressure of the high pressure fracture pump 4 is 80MPa
~120MPa, the range of flow of the high pressure fracture pump 4 is 6m3/ h~14m3/h。
In the present embodiment, the pressure break pipe 6 is located at the pipeline between the first sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2
For the releasing section of the pressure break pipe 6, multiple release apertures are provided with the releasing section, multiple release apertures are in the releasing section
On helically line lay, cavity is provided between the releasing section and the inwall in pressure break hole 13, the one end of liquid injection pipe 8 is exposed in pressure break
Outside hole 13, the other end of liquid injection pipe 8 is extend into the cavity through the first sealing of hole capsule 7-1.
When actual use, before pressure break is carried out to pressure break hole 13, sealing of hole is carried out to pressure break hole 13, first to the first hole sealing glue
Capsule 7-1 and the second sealing of hole capsule 7-2 is inflated, and then the cavity is sealed, sealed mode has two kinds：Release aperture and note
Liquid pipe 8, when carrying out fluid injection using release aperture, sealing slurries are dust-proof water fracturing fluid, easy to use；Noted using liquid injection pipe 8
During liquid, sealing slurries are with the good slurries of sealing, hydrophily, or dust-proof water fracturing fluid.
When actual use, there is auto-lock function on the first sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2, when to
During one sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2 inflations, the gas in the first sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2
When pressure reaches 5MPa, the first sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2 auto-lock function are opened, and are stopped to the first envelope
Hole capsule and the second sealing of hole capsule 7-2 are inflated.
The effect of liquid injection pipe 8：One is that the cavity is sealed；Two discharge the sealing slurry in the cavity when being pressure release
Liquid.
The purpose of sealing of hole is carried out to pressure break hole 13：Using double sealing of hole capsules (the first sealing of hole capsule 7-1 and the second sealing of hole capsule
The form of 7-2)+sealing of hole slurries carries out sealing of hole, it is therefore intended that carrying out pressurize to the dust-proof water fracturing fluid in pressure break hole 13 (makes pressure break
Pressure in hole 13 can continue to raise), prevent that dust-proof water fracturing fluid overflows out of hole during the pressure rise of dust-proof water fracturing fluid,
The operating personnel of surrounding is damaged.
Meanwhile, the sealing of hole intensity of hole packer have to be larger than the maximum recoil strength produced in fracturing process, and maximum recoil strength is pressed
Following formula is calculated：Fmax=0.25 π D2P × 10-3, in formula：Fmax- maximum recoil strength, unit is kN；D-bore diameter, unit is
mm；The rated pressure of P-high pressure fracture pump, unit is MPa.
When actual use, the pressure break hole 13 for treating pressure break coal petrography 15 can be by two kinds of pressure break sides of staged fracturing and full section pressure break
Formula：
When staged fracturing, pass through the distance between the first sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2 and the second sealing of hole
The distance between capsule 7-2 and the bottom hole of pressure break hole 13 carry out Discrete control, according to the pressure break demand in actual pressure break hole 13, set the
After one sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2, to being filled after setting the first sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2
Gas, seals the cavity set between the releasing section and the inwall in pressure break hole 13, to the second sealing of hole capsule 7-2 to the hole of pressure break hole 13
Part between bottom carries out pressure break, and pressure break now is segmented into：The cavity, the second sealing of hole capsule 7-2 are to the bottom hole of pressure break hole 13
Between part, the cavity realizes the pressure break hole 13 for the treatment of pressure break coal petrography 15 not only as seal section but also as fracturing section
Staged fracturing；
When full section pressure break, the first sealing of hole capsule 7-1 and the second sealing of hole capsule 7-2 are arranged on to the aperture in pressure break hole 13
Place, after being sealed to the cavity, full section pressure is carried out to the second sealing of hole capsule 7-2 to the part between the bottom hole of pressure break hole 13
Split, now the cavity is only as seal section.
In the present embodiment, the pipeline 5 is wire spirally-wound hose, a diameter of 30mm of the wire spirally-wound hose~
135mm, the compression strength of the wire spirally-wound hose is all higher than 120MPa.
Two joints of the three-way connection 10 are connected with the pipeline 5, and another joint is provided with manual tune
Compress switch.
When actual use, a diameter of 30mm~135mm of the pipeline 5 wire spirally-wound hose, it is therefore an objective to increase pipeline 5
Intensity, prevent in fracturing process because the pressure of dust-proof water fracturing fluid causes the explosion of pipeline 5.
Two joints of the three-way connection 10 are connected with pipeline 5, and another joint is provided with manual voltage regulation and opened
Close, in fracturing process, manual voltage regulation switch is closed, dust-proof water fracturing fluid enters pressure break pipe 6 by pipeline 5 to be treated
Pressure break coal petrography 15 carries out pressure break, after pressure break terminates, and opens manual voltage regulation switch and carries out pressure release to the dust-proof water fracturing fluid in pipeline 5
The dust-proof water fracturing fluid of discharge line 5 afterwards.
In the present embodiment, the release 12 for discharging the pressure of pipeline 5 is additionally provided with the pipeline 5.
When actual use, the release 12 is arranged on the pipeline 5 between feeding unit and the power unit, release
The effect of device 12 is that after the completion of pressure break, opening release 12 is discharged the pressure of dust-proof water fracturing fluid in pipeline 5, is easy to
The recovery of dust-proof water fracturing fluid.
In the present embodiment, the pressure break agent feed tube 2 is provided with the control for controlling the pressure of pressure break agent feed tube 2 and flow
Valve processed, the dust-proof water feed tube 3-1 is provided with the control valve for controlling the dust-proof water feed tube 3-1 pressure and flow.
It is control that control pressure and the control valve purpose of flow are set at the pressure break agent feed tube 2, dust-proof water feed tube 3-1
Pressure break agent processed and the pressure and flow of dust-proof water, to ensure the content of pressure break agent and dust-proof water in first reactor 1-1 and anti-
Between seasonable, the dust-proof water fracturing fluid of mass concentration needed for finally giving.
When actual use, control valve, Neng Gougen are again provided with the pipeline 5 between feeding unit and the power unit
During according to practice of construction, when the pressure break of pressure break coal petrography 15 starts or terminated, pressure break agent and the supply of dust-proof water are controlled.
A kind of coal petrography softening active fracturing device as shown in Figure 5, in addition to the pressure and flow of the power unit
The monitoring unit being monitored, the monitoring unit includes controller 18 and the power module 19 powered for controller 18, described
The input of controller 18 is connected with pressure monitoring module 16 and flow monitoring module 17, the output end connection of the controller 18
There is display module 21, power control switch 20 is serially connected between the power module 19 and the controller 18.
During practice of construction, the pressure monitoring module 16 can be carried out to the pressure and flow of high pressure fracture pump 4
Monitoring in real time, when carrying out pressure testing to the high pressure fracture pump 4 and carrying out pressure break to pressure break hole, it is ensured that in high pressure fracture pump 4
Pressure test pressure is more than or equal to the rated pressure of high pressure fracture pump 4；The high pressure pressure is monitored by the flow monitoring module 17
Split the flow of dust-proof water fracturing fluid in pump 4, it is ensured that the supply of dust-proof water fracturing fluid during pressure break is carried out to pressure break hole 13.
Embodiment 2
The present embodiment is as different from Example 1：A kind of coal petrography softening active fracturing device as shown in Figure 3, Figure 4, institute
In the coal petrography softening active fracturing device of use, the second reactor 1-2 that the feeding unit is connected with first reactor 1-1,
It is provided with pressure break agent feed tube 2 and dust-proof water feed tube 3-1, the second reactor 1-2 and sets on the first reactor 1-1
It is equipped with supercritical liq CO2Feed tube 3-2.
When actual use, first reactor 1-1 (such as tank reactor or injection reactor) and second reactor 1-2
(such as tank reactor or injection reactor) is the device for being used to realize liquid-liquid course of reaction.
In the present embodiment, the pressure break agent feed tube 2 is provided with the control for controlling the pressure of pressure break agent feed tube 2 and flow
Valve processed, the dust-proof water feed tube 3-1 is provided with the control valve for controlling the dust-proof water feed tube 3-1 pressure and flow, described
Supercritical liq CO2Feed tube 3-2 is provided with the control supercritical liq CO2The control valve of feed tube 3-2 pressure and flow.
It is control that control pressure and the control valve purpose of flow are set at the pressure break agent feed tube 2, dust-proof water feed tube 3-1
Pressure break agent processed and the pressure and flow of dust-proof water, to ensure the content of pressure break agent and dust-proof water in first reactor 1-1 and anti-
Between seasonable, the dust-proof water fracturing fluid of mass concentration, the supercritical liq CO needed for finally giving2Feed tube 3-2 is provided with control
Make the supercritical liq CO2The control valve of feed tube 3-2 pressure and flow, it is therefore an objective to control supercritical liq CO2Pressure and
Flow, to ensure the agent of dust-proof water pressure break and supercritical liq CO2Content and reaction time in second reactor 1-2, finally
The supercritical CO of mass concentration needed for obtaining2Active fracturing liquid.
In the present embodiment, after pressure break agent is uniformly mixed with dust-proof water in first reactor 1-1, dust-proof hydraulic pressure is obtained
Liquid is split, then by obtained dust-proof water fracturing fluid and supercritical liq CO2After uniformly being mixed in second reactor 1-2,
Obtain supercritical CO2Active fracturing liquid, supercritical CO2Active fracturing liquid enters power unit by pipeline 5, and power unit is to pressure
Split after liquid pressurizeed, fracturing fluid enters pressure break pipe 6 by pipeline 5, treats pressure break coal petrography 15 and carries out pressure break, softens coal petrography,
And then improve the permeability of coal petrography.
Supercritical CO2Active fracturing liquid diffusivity in pressure break coal petrography 15 is treated is strong, and penetrating power is strong, easily produces a large amount of
Microfissure network, it is possible to increase permeability and CH4Deaeration ability, reduces supercritical CO2The susceptibility of active fracturing liquid, is reduced
Supercritical CO2The aequum of active fracturing liquid, reduces supercritical liq CO2Demand, it is therefore prevented that caused by coal petrography pressure break
The secondary emission pollution of greenhouse gases, meanwhile, it is capable to which pre- protecting against shock disaster, reduces coal dust, prevents gas and coal petrography spontaneous combustion
Deng.
It is described above, only it is preferred embodiment of the present utility model, not the utility model is imposed any restrictions, every
Any simple modification, change and the equivalent structure change made according to the utility model technical spirit to above example, still
Belong in the protection domain of technical solutions of the utility model.
Claims (8)
1. a kind of coal petrography softens active fracturing device, it is characterised in that：Connected including conveying mechanism and with the conveying mechanism
Pressure break mechanism, the conveying mechanism include pipeline (5) and be successively set on pipeline (5) feeding unit, power unit and
Adjustment unit, the pressure break mechanism is arranged on the output end of pipeline (5)；
The feeding unit includes being provided with pressure break agent feed tube on first reactor (1-1), the first reactor (1-1)
(2) and dust-proof water feed tube (3-1), the adjustment unit includes check valve (9) and the three-way connection connected with check valve (9)
(10)；
The pressure break mechanism includes connecting and extending into pipeline (5) the pressure break pipe treated in pressure break coal petrography (15) pressure break hole (13)
(6) and the hole packer that is arranged on the pressure break pipe (6), the hole packer includes the first sealing of hole being arranged in pressure break hole (13)
Capsule (7-1) and the second sealing of hole capsule (7-2).
2. soften active fracturing device according to a kind of coal petrography described in claim 1, it is characterised in that：Also include and the first reaction
Supercritical liq CO is provided with the second reactor (1-2) of device (1-1) connection, the second reactor (1-2)2Feed tube
(3-2)。
3. soften active fracturing device according to a kind of coal petrography described in claim 1 or 2, it is characterised in that：The power unit
For high pressure fracture pump (4), the rated pressure of the high pressure fracture pump (4) is 80MPa~120MPa, the high pressure fracture pump (4)
Range of flow be 6m3/ h~14m3/h。
4. soften active fracturing device according to a kind of coal petrography described in claim 1 or 2, it is characterised in that：The pressure break pipe (6)
Pipeline between the first sealing of hole capsule (7-1) and the second sealing of hole capsule (7-2) is the releasing section of the pressure break pipe (6), institute
State and multiple release apertures are provided with releasing section, multiple release apertures on the releasing section helically lay by line, the release
Be provided with cavity between section and the inwall of pressure break hole (13), liquid injection pipe (8) one end it is exposed in pressure break hole (13) outside, liquid injection pipe (8)
The other end is extend into the cavity through the first sealing of hole capsule (7-1).
5. soften active fracturing device according to a kind of coal petrography described in claim 1 or 2, it is characterised in that：The pipeline (5) is
Wire spirally-wound hose, a diameter of 30mm~135mm of the wire spirally-wound hose, the compression strength of the wire spirally-wound hose is equal
More than 120MPa.
6. soften active fracturing device, two joints of the three-way connection (10) according to a kind of coal petrography described in claim 1
Connected with the pipeline (5), another joint of three-way connection (10) is provided with manual voltage regulation switch.
7. soften active fracturing device according to a kind of coal petrography described in claim 1, it is characterised in that：Set on the pipeline (5)
It is equipped with the release (12) for discharging the pipeline (5) pressure.
8. soften active fracturing device according to a kind of coal petrography described in claim 3, it is characterised in that：Also include to the power
The monitoring unit that the pressure and flow of unit are monitored, the monitoring unit includes controller (18) and supplied for controller (18)
The power module (19) of electricity, the input of the controller (18) is connected with pressure monitoring module (16) and flow monitoring module
(17), the output end of the controller (18) is connected with display module (21), the power module (19) and the controller
(18) power control switch (20) is serially connected between.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720216187.8U CN206554907U (en) | 2017-03-07 | 2017-03-07 | A kind of coal petrography softens active fracturing device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720216187.8U CN206554907U (en) | 2017-03-07 | 2017-03-07 | A kind of coal petrography softens active fracturing device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677756A (en) * | 2017-03-07 | 2017-05-17 | 库尔勒金川矿业有限公司 | Active fracturing device for coal rock softening and coal rock fracturing construction process |
| CN110905473A (en) * | 2019-12-06 | 2020-03-24 | 中国地质大学（北京） | Fracturing device for coal bed gas exploitation in low permeability zone |
-
2017
- 2017-03-07 CN CN201720216187.8U patent/CN206554907U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106677756A (en) * | 2017-03-07 | 2017-05-17 | 库尔勒金川矿业有限公司 | Active fracturing device for coal rock softening and coal rock fracturing construction process |
| CN110905473A (en) * | 2019-12-06 | 2020-03-24 | 中国地质大学（北京） | Fracturing device for coal bed gas exploitation in low permeability zone |
| CN110905473B (en) * | 2019-12-06 | 2020-10-20 | 中国地质大学（北京） | Fracturing device for coal bed gas exploitation in low permeability zone |
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