CN106867501A - A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution - Google Patents
A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution Download PDFInfo
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- CN106867501A CN106867501A CN201710097159.3A CN201710097159A CN106867501A CN 106867501 A CN106867501 A CN 106867501A CN 201710097159 A CN201710097159 A CN 201710097159A CN 106867501 A CN106867501 A CN 106867501A
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- sodium hypochlorite
- coal seam
- coal
- aqueous sodium
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- 239000003245 coal Substances 0.000 title claims abstract description 118
- SUKJFIGYRHOWBL-UHFFFAOYSA-N sodium hypochlorite Chemical compound [Na+].Cl[O-] SUKJFIGYRHOWBL-UHFFFAOYSA-N 0.000 title claims abstract description 82
- 239000005708 Sodium hypochlorite Substances 0.000 title claims abstract description 78
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 50
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000003002 pH adjusting agent Substances 0.000 claims abstract description 36
- 239000007787 solid Substances 0.000 claims abstract description 24
- VEXZGXHMUGYJMC-UHFFFAOYSA-M Chloride anion Chemical compound [Cl-] VEXZGXHMUGYJMC-UHFFFAOYSA-M 0.000 claims abstract description 18
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims abstract description 16
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000000243 solution Substances 0.000 claims description 55
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 15
- 238000005868 electrolysis reaction Methods 0.000 claims description 12
- WQYVRQLZKVEZGA-UHFFFAOYSA-N hypochlorite Chemical compound Cl[O-] WQYVRQLZKVEZGA-UHFFFAOYSA-N 0.000 claims description 12
- 239000007864 aqueous solution Substances 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 8
- 239000011780 sodium chloride Substances 0.000 claims description 8
- 238000011065 in-situ storage Methods 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 5
- 230000033228 biological regulation Effects 0.000 claims description 2
- 150000003839 salts Chemical class 0.000 claims description 2
- 230000035699 permeability Effects 0.000 abstract description 27
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 238000005553 drilling Methods 0.000 abstract description 7
- 238000005086 pumping Methods 0.000 abstract description 6
- 238000000605 extraction Methods 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000006213 oxygenation reaction Methods 0.000 abstract description 4
- 239000007789 gas Substances 0.000 description 37
- OSVXSBDYLRYLIG-UHFFFAOYSA-N dioxidochlorine(.) Chemical compound O=Cl=O OSVXSBDYLRYLIG-UHFFFAOYSA-N 0.000 description 20
- 238000006243 chemical reaction Methods 0.000 description 14
- 239000004155 Chlorine dioxide Substances 0.000 description 10
- 235000019398 chlorine dioxide Nutrition 0.000 description 10
- 230000000694 effects Effects 0.000 description 10
- 239000011734 sodium Substances 0.000 description 9
- BZSXEZOLBIJVQK-UHFFFAOYSA-N 2-methylsulfonylbenzoic acid Chemical compound CS(=O)(=O)C1=CC=CC=C1C(O)=O BZSXEZOLBIJVQK-UHFFFAOYSA-N 0.000 description 8
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 8
- QWPPOHNGKGFGJK-UHFFFAOYSA-N hypochlorous acid Chemical compound ClO QWPPOHNGKGFGJK-UHFFFAOYSA-N 0.000 description 8
- 229910052708 sodium Inorganic materials 0.000 description 8
- 235000002639 sodium chloride Nutrition 0.000 description 8
- 238000007254 oxidation reaction Methods 0.000 description 7
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 6
- 239000000460 chlorine Substances 0.000 description 6
- 229910052801 chlorine Inorganic materials 0.000 description 6
- 230000003647 oxidation Effects 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000001035 drying Methods 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 229910019093 NaOCl Inorganic materials 0.000 description 3
- MUBZPKHOEPUJKR-UHFFFAOYSA-N Oxalic acid Chemical compound OC(=O)C(O)=O MUBZPKHOEPUJKR-UHFFFAOYSA-N 0.000 description 3
- 239000007788 liquid Substances 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000004576 sand Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- KZBUYRJDOAKODT-UHFFFAOYSA-N Chlorine Chemical compound ClCl KZBUYRJDOAKODT-UHFFFAOYSA-N 0.000 description 2
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 description 2
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 description 2
- 239000002253 acid Substances 0.000 description 2
- 230000003667 anti-reflective effect Effects 0.000 description 2
- 230000003750 conditioning effect Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000007800 oxidant agent Substances 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000012266 salt solution Substances 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 238000007605 air drying Methods 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- RHZUVFJBSILHOK-UHFFFAOYSA-N anthracen-1-ylmethanolate Chemical compound C1=CC=C2C=C3C(C[O-])=CC=CC3=CC2=C1 RHZUVFJBSILHOK-UHFFFAOYSA-N 0.000 description 1
- 239000003830 anthracite Substances 0.000 description 1
- 239000002802 bituminous coal Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000003411 electrode reaction Methods 0.000 description 1
- 239000002360 explosive Substances 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- XLYOFNOQVPJJNP-ZSJDYOACSA-N heavy water Substances [2H]O[2H] XLYOFNOQVPJJNP-ZSJDYOACSA-N 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 235000006408 oxalic acid Nutrition 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- VKJKEPKFPUWCAS-UHFFFAOYSA-M potassium chlorate Chemical compound [K+].[O-]Cl(=O)=O VKJKEPKFPUWCAS-UHFFFAOYSA-M 0.000 description 1
- 239000012286 potassium permanganate Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000029219 regulation of pH Effects 0.000 description 1
- 238000009738 saturating Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 239000004408 titanium dioxide Substances 0.000 description 1
- 230000001988 toxicity Effects 0.000 description 1
- 231100000419 toxicity Toxicity 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/80—Compositions for reinforcing fractures, e.g. compositions of proppants used to keep the fractures open
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Chemical & Material Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention belongs to Safety of Coal Mine Production technical field, live large-scale promotion application is difficult to solve existing transparent agent, the problems such as the oxygenation efficiency to coal is extremely low at normal temperatures, there is provided a kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution.It is made up of component A, component B and water, component A is sodium hypochlorite solid or liquor natrii hypochloritis, component B is pH adjusting agent, is hydrochloric acid or sulfuric acid of the concentration less than 10%；Effective chlorine ion concentration is 1% 6% in coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, and pH value is 9 13.Increase gas permeability of coal seam, practical work face fast area is taken out in advance.Using the present invention coal is carried out it is anti-reflection after, substantially reduce the gas drainage under suction time；Reduce drilling quantities；Realize the anti-reflection and efficient gas pumping of high methane low permeability coal seam, improve stope, the region gas pre-drainage efficiency of coal roadway stripe, shorten the extraction time, increase drainage radius, reduce drilling quantities, eliminate Gas Disaster to greatest extent.
Description
Technical field
The invention belongs to Safety of Coal Mine Production technical field, and in particular to a kind of coal seam reservoirs based on aqueous sodium hypochlorite solution
Transparent agent.
Background technology
On October 16th, 2011 is by State Administration of Quality and Technical Supervision, the National Development and Reform Commission, national energy
Source office, national Coal Mine Safety Supervision Bureau fill (2011) No. 163 and print and distribute with the total coal of safety supervision《Coal mine gas drainage temporary provisions up to standard》
The mine for having one of following situations must carry out gas pumping, and realize that extraction is up to standard：（One）Exploitation has coal and gas prominent to endanger
Dangerous coal seam；（Two）One coal-face absolute gas emission rate is more than 5m/min or absolute gas of driving face
Outburst amount is more than 3m/min's；（Three）Mine absolute gas emission rate is more than or equal to 40m/min's；（Four）Mine annual production is
1.0~1.5Mt, its absolute gas emission rate is more than 30m/min's；（Five）Mine annual production is 0.6~1.0Mt, its absolute watt
This outburst amount is more than 25m/min's；（Six）Mine annual production is 0.4~0.6Mt, and its absolute gas emission rate is more than 20m/min
's；（Seven）Mine annual production is equal to or less than 0.4Mt, and its absolute gas emission rate is more than 15m/min's.
Gas pre-drainage effect should meet following standard：1. pair gas emission mostlys come from the coal work of mined bed
Face, in range of value coal can coal seams gas discharging quantity meet table 1 regulation, judge coal-face range of value gas pumping effect
It is up to standard.
Coal can the index that should reach of coal seams gas discharging quantity before the coal-face back production of table 1
| The working face daily output（t） | Can coal seams gas discharging quantity（m/t） |
| ≤1000 | ≤8 |
| 1001~2500 | ≤7 |
| 2501~4000 | ≤6 |
| 4001~6000 | ≤5.5 |
| 6001~8000 | ≤5 |
| 8001~10000 | ≤4.5 |
| >10000 | ≤4 |
Because China's major part mining area gas permeability of coal seam is relatively low, for large-scale above highly gassy mine, coal-face gas is pre-
Take out generally less efficient, being drilled when directly taking out coal-bed gas in advance, effective extraction radius is small, and extracting result is poor, the gas pumping cycle
It is long, often with intensive cloth hole, engineering high input for cost carries out pre- taking out.
Ground coal bed gas hydraulic fracturing anti-reflection：High-Pressure Water is produced with pump on the ground behind the coal seam of selected pressure break, from brill
Hole enters coal seam, and original crack in coal seam is strutted, and continues to be pressed into current, the crack being softened in coal seam is sent out to surrounding
Exhibition, at the same time, adds sieved sand in water, it as proppant, is sent into the crack being softened in coal seam, works as pressure
Split end, water blanket is returned during sand after row still remains in the crack supported in coal seam.Hydraulic fracturing causes Gas Flow
Passage is from foot of hole to the place extended around to more than 100 meters remote.Expand the borehole discharging gas scope in coal seam, thus
Gas emission also increases.Ground coal bed gas hydraulic fracturing technology is anti-reflection by physical action, is mainly used in coal harder, ventilative
The preferable coal seam reservoirs of property are anti-reflection, and engineering cost is higher.
Downhole hydraulic pressure break is anti-reflection：Downhole hydraulic pressure break principle is identical with ground hydraulic fracturing, but by underground space limit
System, can only carry out pressure break using mini-plant, and power is small, it is difficult to realize adding sand quilt in proppant is sent into coal seam in water
In the crack for strutting.Also rely on physical action anti-reflection, be mainly used in that coal is harder, the preferable coal seam reservoirs of gas permeability are anti-reflection, work
Cheng Chengben is not high, but effect usually not ground fracturing is notable.
The content of the invention
The present invention is in order to solve weak point of the prior art, there is provided a kind of coal seam reservoirs based on aqueous sodium hypochlorite solution
Transparent agent.Main purpose is that coal seam reservoirs transparent agent is pressed into coal reservoir fracture and hole, profit by ground drilling or down-hole drilling
It is erodible with the aqueous sodium hypochlorite solution oxidation good to coal, expand and dredging coal reservoir fracture, hole, improve coal seam reservoirs and breathe freely
Property, so as to reach the effect of the anti-reflection volume increase of coal seam reservoirs.
To realize above target, the present invention is adopted the following technical scheme that：A kind of coal seam reservoirs based on aqueous sodium hypochlorite solution
Transparent agent, is made up of component A, component B and water, and wherein component A is sodium hypochlorite solid or liquor natrii hypochloritis, and component B is
PH adjusting agent, pH adjusting agent is hydrochloric acid or sulfuric acid of the concentration less than 10%；The coal seam reservoirs based on aqueous sodium hypochlorite solution are anti-reflection
Effective chlorine ion concentration is 1%-6% in agent, and pH value is 9-13.
The component A is sodium hypochlorite solid, and sodium hypochlorite solid is with the quality proportioning of pH adjusting agent and water：Hypochlorous acid
Sodium solid：PH adjusting agent：Water=1-7：1-10：100.
The component A is liquor natrii hypochloritis, its effective chlorine ion concentration≤15%.
Effective chlorine ion concentration is 6% in the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, and pH value is 9.
Liquor natrii hypochloritis is prepared in situ using the method for hypochlorite generator's electrolysis low concentration common salt aqueous solution, will be dense
Spend for 3 ~ 6% dilute saline solutions are added in electrolytic cell, connect 12V dc sources, it is 0-40 DEG C, electrolytic saltwater to control electrolysis temperature
Produce liquor natrii hypochloritis, sealing preserve liquor natrii hypochloritis to be then diluted with water liquor natrii hypochloritis, be eventually adding pH regulations
Agent adjusts liquor natrii hypochloritis's pH value.
Being distinguished as in the prior art that the present invention is close with other：
1）With the difference of chlorine dioxide transparent agent：
Chlorine dioxide has strong oxidizing property, oxidation reaction can occur with coal molecule at normal temperatures.Chlorine dioxide is extremely unstable, no
Can be transported as sodium hypochlorite, be easy to explosion accident in transport, so only rely on being prepared in situ.Typically all
It is to be prepared with the reaction of acid by sodium chlorate.Method the gentleest is the reaction generation chlorine dioxide of oxalic acid and sodium chlorate
Gas：2NaClO3+2H2C2O4→Na2C2O4+2H2O+2CO2↑+2ClO2↑。
Sodium chlorate or potassium chlorate are needed to use due to producing chlorine dioxide, so operating cost is very high, about hypochlorous acid
More than 5 times of sodium operating cost.The extremely strong chemical corrosivity of chlorine dioxide is almost the same with chlorine, and its toxicity or chlorine
40 times of gas.Chlorine dioxide can occur explosive reaction with many chemical substances.It is quite quick to heat, vibrations, shock and friction
Sense, is extremely easy in decomposition and explodes.When being heated and can be promoted the material of oxidation by illumination or chance organic matter etc., can promote to decompose
And easily set off an explosion.If category strong oxidizer, its effective chlorine is 2.6 times of chlorine.Vigorous reaction can occur with many materials.Dioxy
Change chlorine and be difficult to large-scale promotion application at the scene as coal seam reservoirs transparent agent.
With the difference of other transparent agents：Other oxidants such as potassium permanganate, hydrogen peroxide are at normal temperatures to the oxygenation efficiency pole of coal
It is low, it usually needs reaction temperature higher, it is difficult to apply at the scene.
The coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution prepared by the present invention can occur with coal molecule at normal temperatures
Oxidation reaction, lignite and bituminous coal oxygenation efficiency reach more than 90%, and anthracite oxygenation efficiency reaches more than 18%.The molecular formula of sodium hypochlorite
It is NaOCl, belongs to strong base-weak acid salt, it is as clear as crystal, is a kind of liquid that can be dissolved completely in water.Due to sodium hypochlorite solution not
Yi Jiucun, therefore sodium hypochlorite liquid prepared at the scene with being electrolysed low concentration saline solution.The generating process of sodium hypochlorite can lead to
Chemical equation is crossed to be expressed as follows：
Its overall reaction is expressed as：NaCl+H2O→NaOCl+H2↑；Electrode reaction：Anode：2Cl--2e→Cl2；Negative electrode：2H++2e
→H2；Solution reaction：2NaOH+Cl2→NaCl+NaOCl+H2O。
Javelle water body is produced as most preferably with hypochlorite generator.Because, the sodium hypochlorite solution that it is produced
Body is more stable, single, also easily preserves, without those complicated or even harmful compositions that Zhi Lv factories produce.
Sodium hypochlorite compares with chlorine dioxide：Liquor natrii hypochloritis is higher than at normal temperatures titanium dioxide to the oxidation susceptibility of coal
Chlorine, thus more more superior than chlorine dioxide to the anti-reflection performance of coal, at the same sodium hypochlorite it is more more stable than chlorine dioxide, safe,
Cheaply.Therefore, sodium hypochlorite is easy to large-scale promotion application at the scene for coal seam reservoirs transparent agent.
The present invention can greatly increase gas permeability of coal seam, and practical work face fast area is taken out in advance.The results showed, use
The coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution prepared by the present invention coal is carried out it is anti-reflection after, Permeability Coefficent in Coal Seam increase
Big more than 2 times, gas pumping rate reaches 60%-80%, fullys meet region gas pre-drainage index request, and when spent
Between, manpower and material resources it is relatively low.Using the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution coal is carried out it is anti-reflection after, hundred meters of coal seam
Drilling gas flow increases into several times, substantially reduces the gas drainage under suction time；Drilling-draining radius increases into several times, reduces drilling
Quantities；Gas exceeding limit probability during making driving and back production is greatly reduced, for safety of coal mines high winning technology, driving provide treasured
Your and safety guarantee time.The present invention realizes the anti-reflection and efficient gas pumping of high methane low permeability coal seam, improve stope,
The region gas pre-drainage efficiency of coal roadway stripe, shorten the extraction time, increase drainage radius, reduce drilling quantities, to greatest extent
Eliminate Gas Disaster.Can be used for coal seam reservoirs hydraulic fracturing, dredge coal reservoir fracture and hole, further improve hydraulic fracturing and increase
Saturating effect.
Brief description of the drawings
Fig. 1 is the preparation technology flow chart of the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution of the present invention.
Specific embodiment
Embodiment 1：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is sodium hypochlorite solid, and component B is pH adjusting agent, and the pH adjusting agent is hydrochloric acid of the concentration less than 10%；Hypochlorous acid
Sodium solid is with the quality proportioning of pH adjusting agent and water：Sodium hypochlorite solid：PH adjusting agent：Water=1：5：100；It is described based on secondary
Effective chlorine ion concentration is 1% in the coal seam reservoirs transparent agent of sodium chlorate aqueous solution, and pH value is 13.
Embodiment 2：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is sodium hypochlorite solid, and component B is pH adjusting agent, and the pH adjusting agent is sulfuric acid of the concentration less than 10%；Hypochlorous acid
Sodium solid is with the quality proportioning of pH adjusting agent and water：Sodium hypochlorite solid：PH adjusting agent：Water=5：10：100；It is described based on secondary
Effective chlorine ion concentration is 3% in the coal seam reservoirs transparent agent of sodium chlorate aqueous solution, and pH value is 10.
Embodiment 3：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is sodium hypochlorite solid, and component B is pH adjusting agent, and the pH adjusting agent is hydrochloric acid of the concentration less than 10%；Hypochlorous acid
Sodium solid is with the quality proportioning of pH adjusting agent and water：Sodium hypochlorite solid：PH adjusting agent：Water=7：1：100；It is described based on secondary
Effective chlorine ion concentration is 5% in the coal seam reservoirs transparent agent of sodium chlorate aqueous solution, and pH value is 12.
Embodiment 4：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is sodium hypochlorite solid, and component B is pH adjusting agent, and the pH adjusting agent is sulfuric acid of the concentration less than 10%；Hypochlorous acid
Sodium solid is with the quality proportioning of pH adjusting agent and water：Sodium hypochlorite solid：PH adjusting agent：Water=3：8：100；It is described based on secondary
Effective chlorine ion concentration is 6% in the coal seam reservoirs transparent agent of sodium chlorate aqueous solution, and pH value is 9.
Embodiment 5：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is sodium hypochlorite solid, and component B is pH adjusting agent, and the pH adjusting agent is sulfuric acid of the concentration less than 10%；Hypochlorous acid
Sodium solid is with the quality proportioning of pH adjusting agent and water：Sodium hypochlorite solid：PH adjusting agent：Water=6：3：100；It is described based on secondary
Effective chlorine ion concentration is 6% in the coal seam reservoirs transparent agent of sodium chlorate aqueous solution, and pH value is 9.
Embodiment 6：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is liquor natrii hypochloritis, and its effective chlorine ion concentration is 15%；Component B is pH adjusting agent, and the pH adjusting agent is dense
Hydrochloric acid of the degree less than 10%；Effective chlorine ion concentration is 6%, pH value in the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution
It is 9.Its preparation method is：Sodium hypochlorite is prepared in situ using the method for hypochlorite generator's electrolysis low concentration common salt aqueous solution
Solution, is that 3% dilute saline solution is added in electrolytic cell by concentration, connects 12V dc sources, controls electrolysis temperature for 40 DEG C, electrolysis food
Salt solution produces liquor natrii hypochloritis, sealing preserve liquor natrii hypochloritis to be then diluted with water liquor natrii hypochloritis, be eventually adding pH
Conditioning agent adjusts liquor natrii hypochloritis's pH value.
Embodiment 7：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is liquor natrii hypochloritis, and its effective chlorine ion concentration is 10%；Component B is pH adjusting agent, and the pH adjusting agent is dense
Hydrochloric acid of the degree less than 10%；Effective chlorine ion concentration is 1%, pH value in the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution
It is 13.Its preparation method is：Hypochlorous acid is prepared in situ using the method for hypochlorite generator's electrolysis low concentration common salt aqueous solution
Sodium solution, is that 5% dilute saline solution is added in electrolytic cell by concentration, connects 12V dc sources, controls electrolysis temperature for 20 DEG C, electrolysis
Saline solution produces liquor natrii hypochloritis, sealing preserve liquor natrii hypochloritis to be then diluted with water liquor natrii hypochloritis, be eventually adding
PH adjusting agent adjusts liquor natrii hypochloritis's pH value.
Embodiment 8：A kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, is made up of component A, component B and water, its
Middle component A is liquor natrii hypochloritis, and its effective chlorine ion concentration is 7%；Component B is pH adjusting agent, and the pH adjusting agent is concentration
Hydrochloric acid less than 10%；Effective chlorine ion concentration is 4% in the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, and pH value is
11.Its preparation method is：Sodium hypochlorite is prepared in situ using the method for hypochlorite generator's electrolysis low concentration common salt aqueous solution
Solution, is that 6% dilute saline solution is added in electrolytic cell by concentration, connects 12V dc sources, controls electrolysis temperature for 0 DEG C, electrolysis food
Salt solution produces liquor natrii hypochloritis, sealing preserve liquor natrii hypochloritis to be then diluted with water liquor natrii hypochloritis, be eventually adding pH
Conditioning agent adjusts liquor natrii hypochloritis's pH value.
Experimental example 1：The influence of aqueous sodium hypochlorite solution under the conditions of various concentrations to the anti-reflection effect of moulded coal：Produce with a collection of
Moulded coal, is put into electric drying oven with forced convection, is dried two days at a temperature of 60 DEG C, then determines permeability.Moulded coal is in air pressure
Original permeability is 10.5mD under 0.2MPa, axle pressure 1.5MPa, confined pressure 4MPa.
When analyzing influence of the aqueous sodium hypochlorite solution reaction density to anti-reflection effect, 5 pieces of moulded coals are separately immersed in concentration
In for 2%, 4%, 6%, 8%, 10% aqueous sodium hypochlorite solution, and with preservative film sealing electric drying oven with forced convection, in 60 DEG C of temperature
Degree is lower to be dried two days, and permeability is determined respectively.Result of the test is shown in Table 2, as a result shows, when aqueous sodium hypochlorite solution concentration is 6%
When, the permeability of moulded coal reaches maximum 17.5mD.
Table 2：The permeability testing result of moulded coal in aqueous sodium hypochlorite solution under the conditions of various concentrations
| Aqueous sodium hypochlorite solution concentration % | 2 | 4 | 6 | 8 | 10 |
| Permeability/the mD of moulded coal | 14.1 | 15.7 | 17.5 | 16.8 | 16.1 |
Experimental example 2：The influence of aqueous sodium hypochlorite solution under different pH condition to the anti-reflection effect of moulded coal：Produce with a collection of type
Coal, is put into electric drying oven with forced convection, is dried two days at a temperature of 60 DEG C, and permeability is then determined respectively.Moulded coal is in air pressure
Original permeability is 10.5mD under 0.2MPa, axle pressure 1.5MPa, confined pressure 4MPa.Analysis aqueous sodium hypochlorite solution pH value is to anti-reflection work
During influence, 5 pieces of moulded coals are separately immersed in the aqueous sodium hypochlorite solution that pH value is 9,10,11,12,13, and with fresh-keeping
Film is sealed, and is reacted 5 hours, and reaction temperature is set as 30 DEG C.After the completion of reaction, it is put into electric drying oven with forced convection, at 60 DEG C
At a temperature of dry two days, determine their permeability.Result of the test is shown in Table 3, as a result shows, when aqueous sodium hypochlorite solution concentration is
When 9, the permeability of moulded coal reaches maximum 22.7mD；When pH value is less than 9, aqueous sodium hypochlorite solution fast decoupled, moulded coal
Permeability is close to original permeability 10.5, and permeability increase is not obvious；The antireflective effect reduction of solution when pH value is more than 9.
Table 3：The permeability testing result of moulded coal in aqueous sodium hypochlorite solution under different pH condition
| Aqueous sodium hypochlorite solution pH value | 9 | 10 | 11 | 12 | 13 |
| Permeability/the mD of moulded coal | 22.7 | 21.3 | 18.1 | 16.9 | 15.7 |
Experimental example 3：Influence of the differential responses time to the anti-reflection effect of moulded coal：Produce with a collection of moulded coal, be put into electric heating forced air drying
In case, dried two days at a temperature of 60 DEG C, then determine permeability.Moulded coal is in air pressure 0.2MPa, axle pressure 1.5MPa, confined pressure
Original permeability is 10.5mD under 4MPa.During influence of the analytical reactions time to anti-reflection effect, 4 pieces of moulded coals are separately immersed in dense
Spend in the liquor natrii hypochloritis for 6%, and sealed with preservative film, react 5 hours, 10 hours, 15 hours, 20 hours, by reaction temperature
Degree is set as 30 DEG C.After the completion of reaction, dry two days, its permeability is then surveyed under identical conditions.The permeability difference for measuring
It is 17.1,18.8,20.4,22.1.Result of the test shows that after moulded coal soaks in aqueous sodium hypochlorite solution, permeability has bright
Aobvious increase.Its antireflective effect strengthens with the increase with coal action time.
Experimental example 4：The live application process of the prepared coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution：Adopt first
Ground routine hydraulic fracturing is carried out with fracturing fluid, coal reservoir fracture system is formed；After pressure break terminates, this is pressed into toward coal reservoir fracture
The prepared coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution of invention, aoxidizes corrosion and further dredges coal storage by it
Slabbing gap and hole；After reaction 24 hours, continue to be pressed into a large amount of clear water, cleaning and dilution oxidation product toward coal reservoir fracture；Pressure
Split liquid, transparent agent, water and oxidation product and return to earth's surface during coal bed gas adopts row.
Claims (5)
1. a kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, it is characterised in that：It is made up of component A, component B and water,
Wherein component A is sodium hypochlorite solid or liquor natrii hypochloritis, and component B is pH adjusting agent, and the pH adjusting agent is that concentration is small
In 10% hydrochloric acid or sulfuric acid；Effective chlorine ion concentration is 1%- in the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution
6%, pH value is 9-13.
2. a kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution according to claim 1, it is characterised in that：It is described
Component A is sodium hypochlorite solid, and sodium hypochlorite solid is with the quality proportioning of pH adjusting agent and water：Sodium hypochlorite solid：PH is adjusted
Section agent：Water=1-7：1-10：100.
3. a kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution according to claim 1, it is characterised in that：It is described
Component A is liquor natrii hypochloritis, its effective chlorine ion concentration≤15%.
4. a kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution according to claim 1, it is characterised in that：It is described
Effective chlorine ion concentration is 6% in coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution, and pH value is 9.
5. a kind of coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution according to claim 3, it is characterised in that：It is described
The preparation method of the coal seam reservoirs transparent agent based on aqueous sodium hypochlorite solution is：Low concentration salt is electrolysed using hypochlorite generator
The method of the aqueous solution is prepared in situ liquor natrii hypochloritis, is that 3 ~ 6% dilute saline solutions are added in electrolytic cell by concentration, connects 12V direct currents
Power supply, it is 0-40 DEG C to control electrolysis temperature, electrolytic saltwater generation liquor natrii hypochloritis, sealing preserve liquor natrii hypochloritis, so
After be diluted with water liquor natrii hypochloritis, be eventually adding pH adjusting agent regulation liquor natrii hypochloritis's pH value.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518240A (en) * | 2018-03-09 | 2018-09-11 | 山东科技大学 | Have both spontaneous combustion of coal seam resistanceization and the antireflective reagent of gas pumping and construction method |
| CN111075496A (en) * | 2020-03-09 | 2020-04-28 | 河南理工大学 | Device for comprehensively eliminating and suppressing outburst and dust of coal bed by injecting flue gas absorption liquid at low pressure and outburst-eliminating and dust-suppressing method |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168544A (en) * | 2011-03-28 | 2011-08-31 | 河南理工大学 | Method for surface modification and transmission increase of coal reservoirs by using chlorine dioxide |
| CN102287176A (en) * | 2011-05-09 | 2011-12-21 | 河南理工大学 | Coal bed pressing crack liquid system |
| CN103396777A (en) * | 2013-07-22 | 2013-11-20 | 郝占元 | Application of chlorine dioxide blocking remover in coal bed modification |
| CN104329055A (en) * | 2013-07-22 | 2015-02-04 | 郝占元 | Method for exploiting coal bed gas |
| CN104481577A (en) * | 2014-11-21 | 2015-04-01 | 中国矿业大学 | Drilling, cutting, discharging and diversion integrated coal seam physical and chemical combination permeability increase system and method |
| CN104912533A (en) * | 2015-04-20 | 2015-09-16 | 河南理工大学 | Coal reservoir water locking damage control method |
| CN106368733A (en) * | 2016-10-21 | 2017-02-01 | 山东科技大学 | Gas-bearing coal mass hydrofracture and acidification combined strengthening anti-reflection assessment method |
-
2017
- 2017-02-22 CN CN201710097159.3A patent/CN106867501A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102168544A (en) * | 2011-03-28 | 2011-08-31 | 河南理工大学 | Method for surface modification and transmission increase of coal reservoirs by using chlorine dioxide |
| CN102287176A (en) * | 2011-05-09 | 2011-12-21 | 河南理工大学 | Coal bed pressing crack liquid system |
| CN103396777A (en) * | 2013-07-22 | 2013-11-20 | 郝占元 | Application of chlorine dioxide blocking remover in coal bed modification |
| CN104329055A (en) * | 2013-07-22 | 2015-02-04 | 郝占元 | Method for exploiting coal bed gas |
| CN104481577A (en) * | 2014-11-21 | 2015-04-01 | 中国矿业大学 | Drilling, cutting, discharging and diversion integrated coal seam physical and chemical combination permeability increase system and method |
| CN104912533A (en) * | 2015-04-20 | 2015-09-16 | 河南理工大学 | Coal reservoir water locking damage control method |
| CN106368733A (en) * | 2016-10-21 | 2017-02-01 | 山东科技大学 | Gas-bearing coal mass hydrofracture and acidification combined strengthening anti-reflection assessment method |
Non-Patent Citations (2)
| Title |
|---|
| FUEL: "煤用次氯酸钠水溶液进行氧化", 《煤炭转化》 * |
| 宫贵贞，等: "两种煤的次氯酸钠水溶液降解产物的分离与分析", 《燃料化学学报》 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518240A (en) * | 2018-03-09 | 2018-09-11 | 山东科技大学 | Have both spontaneous combustion of coal seam resistanceization and the antireflective reagent of gas pumping and construction method |
| CN108518240B (en) * | 2018-03-09 | 2020-05-15 | 山东科技大学 | Reagent with coal seam spontaneous combustion inhibition and gas extraction permeability increase functions and construction method |
| CN111075496A (en) * | 2020-03-09 | 2020-04-28 | 河南理工大学 | Device for comprehensively eliminating and suppressing outburst and dust of coal bed by injecting flue gas absorption liquid at low pressure and outburst-eliminating and dust-suppressing method |
| CN111075496B (en) * | 2020-03-09 | 2021-04-02 | 河南理工大学 | Device for comprehensively eliminating and suppressing outburst and dust of coal bed by injecting flue gas absorption liquid at low pressure and outburst-eliminating and dust-suppressing method |
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