CN109971450A - Low permeability coal seam fills the water erosion control reinforcing agent - Google Patents
Low permeability coal seam fills the water erosion control reinforcing agent Download PDFInfo
- Publication number
- CN109971450A CN109971450A CN201910308375.7A CN201910308375A CN109971450A CN 109971450 A CN109971450 A CN 109971450A CN 201910308375 A CN201910308375 A CN 201910308375A CN 109971450 A CN109971450 A CN 109971450A
- Authority
- CN
- China
- Prior art keywords
- coal
- reinforcing agent
- water
- coal seam
- low permeability
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
-
- 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
- C09K8/602—Compositions for stimulating production by acting on the underground formation containing surfactants
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21C—MINING OR QUARRYING
- E21C41/00—Methods of underground or surface mining; Layouts therefor
- E21C41/16—Methods of underground mining; Layouts therefor
- E21C41/18—Methods of underground mining; Layouts therefor for brown or hard coal
Abstract
The present invention provides a kind of low permeability coal seams to fill the water erosion control reinforcing agent, and reinforcing agent selects chelate surfactant N- acyl group ED3A and electrodeless electrolyte as reagents recombination additive.N- acyl group ED3A can be with minerals effect cementing in coal body; the cement of not solvent is changed into soluble state; form highly stable chelate; increase coal internal void internal diameter; increase water in intrapore mobility; N- acyl group ED3A also has the characteristic of surfactant simultaneously, reduces surface tension and increases the wettability of coal.
Description
Technical field
Invention belongs to coal seam fluid injection field, and in particular to a kind of low permeability coal seam water filling erosion control reinforcing agent and flood effectiveness inspection
Device is surveyed, coal mine erosion control technical field is belonged to.
Background technique
Bump is one of coal mine major natural disasters, is related to shaft production benefit and mine destiny.And coal seam is infused
Water technology can change coal body physico-mechanical properties and surrouding rock stress field distribution, reduce working face dynamic disaster risk, be one
The common coal mine dynamic disaster Prevention Technique of kind.The major coal mine in China mostly used coal-bed flooding to prevent and treat bump in recent years.
With sharply increasing for coal in China consumption, coal mining depth is also deeper and deeper, and deep coal body knot makes and stress
Environment is increasingly complex, and causing coal power property is to vary widely with physical phase, and impact disaster gradually shows, and has gradually tight
The trend of weight.Since the increase coal-bed flooding of mining depth produces little effect, new feature ' hyposmosis ' is presented in coal seam, due to infiltration
Property is low to cause infused solution poor fluidity in coal seam.
The coal rock dynamic disaster prediction technique of present routine is mainly drilling cuttings method.But the drilling cuttings method activity duration is long,
Heavy workload, the prediction activity duration is also longer, has certain influence to production.So provided herein is a kind of flood effectiveness detection devices
Including charge, electrical measurement transmitter, Acoustic radiating instrument, for detecting flood effectiveness.
Summary of the invention
To solve the above problems, the present invention provides a kind of low permeability coal seam water filling erosion control reinforcing agent and flood effectiveness detections
Device, which there is decomplexing once to seep, reduce water surface tension, increase wettability, hard water resistance property and biological degradability etc. are special
The advantages of point is specially a kind of chelate surfactant, collects chelating agent and surfactant.Coal surface is generally difficult to by water
It is wet, so usually adding surfactant in coal-bed flooding reduces water surface tension, make water be easier coal hole and
It is flowed in crack.But as the characteristics of increase coal seam hyposmosis of mining depth, causes to add common surfactant water filling
Effect produces little effect, and the N- acyl group ED3A that the present invention selects can get off the metal ion in coal body from the decomplexing of coal surface,
Coal secondary pore is opened, the porosity of coal itself is increased, water can be reduced again increasing infiltrative while N- acyl group ED3A
Surface tension.Addition N- acyl group ED3A can solve coal body be not easy to be wet, the difficult point of hyposmosis, N- acyl group ED3A passes through change
The physico-mechanical properties of coal body weaken coal body brittleness, increase the dynamic destruction time of coal, reduce the Burst Tendency of coal.
To achieve the above object, the present invention uses following technological means:
The present invention provides a kind of low permeability coal seams to fill the water prevention and treatment bump reinforcing agent, which is characterized in that including following weight
Part component:
Inorganic electrolyte 0.001%-20%,
Chelate surfactant 0.001%-30%,
Remaining is water.
Further, including following parts by weight of component: ammonium chloride 5%, chelate surfactant N- acyl group ED3A 5%,
Water 90%.
Further determine suitable water injection parameter
Location of water injection is selected, determines the parameters such as water injection time, water injection pressure, water injection hole and extraction pitch of holes.
The invention has the benefit that
It is safe, low in cost, fluid injection is uniform 1. low-permeability coal seam of the present invention priming device.
2. it is non-that chelating dosage form surfactant of the present invention can form stability constant with the easy precipitating ion in coal
The often high chelate with cyclic structure, makes easy precipitating ion get off from the decomplexing of coal body surface, by the mineral qualitative change of not solvent
For the ion of soluble state, separated from coal.And the chelate separated can avoid secondary precipitation.After chelation coal this
Raw hole increases, and mobility of the solution in media greatly increases, and displacement gas effect is obvious.Chelate surfactant simultaneously
Also there is the feature of surfactant both: having reduced the surface tension of solution, increase coal table expires wettability.
3. wetting agent of the present invention combine low in cost, environmentally protective, excellent surface-active, sequestering, scale inhibition performance,
It is readily biodegradable and a series of superior performances such as non-stimulated nontoxic to the human body.
4. wetting agent combination of the present invention can be acted on minerals, minerals are parts most hard in coal, effect
The dynamic destruction time of coal increases afterwards, and Burst Tendency reduces.
Specific embodiment
Prevention and treatment bump reinforcing agent is filled the water the present invention provides a kind of low permeability coal seam and water filling device is low to solve
The technical problem of bump and coal seam infusion effect difference easily occurs for permeability coal seam, comprising the following steps:
1) water injection hole, hole depth 50m, aperture 50mm are beaten in low permeability coal seam working face.It takes coal sample to carry out coal impact simultaneously to incline
Tropism experiment.
2) suitable reagents recombination is selected are as follows:
N- acyl group ED3A 5%,
Ammonium chloride 5%,
Water 90%.
3) reinforcing agent, which enters after coal body, enters coal seam depth by the characteristic of surfactant, and chelating occurs in the process and makees
With the minerals decomplexing in hole being got off, increase hole internal diameter, while new hole can also be opened.
4) detection device is mounted in the hollow iron pipe 4 with crack after filling the water, is then threadedly coupled 9 one section one of casing
Section puts in iron pipe in water injection hole, is inserted into behind bottom several probes when starting driving device 5 and slides in water injection hole, then opens
Data collecting instrument 11 starts to acquire data.The device can concentrate probe to work in water injection hole repeatedly.
Embodiment 1
1) the present invention provides a kind of low permeability coal seams to fill the water prevention and treatment bump reinforcing agent
Take coal sample in infused coal seam, coal sample mechanical property be measured, analysis note reinforcing agent before with later and water filling carry out
It is as shown in the table for comparative analysis result:
Since coal seam hyposmosis is low so needing to improve permeability to improve coal seam infusion effect, so this hair after deep mining
Bright person selects chelate surfactant N- acyl group ED3A and electrodeless electrolyte as reagents recombination additive.N- acyl group ED3A
The cement of not solvent can be changed into soluble state, form highly stable chelating with minerals effect cementing in coal body
Object increases coal internal void internal diameter, increases water in intrapore mobility.Reinforcing agent N- acyl group ED3A also has very high simultaneously
Surface-active, the surface tension of solution can be reduced, adding, which reduces enhancing after electrodeless electrolyte, reduces the degree of surface tension,
Solution can be made to can enter in subtleer hole after reducing surface tension, while reinforcing agent N- acyl group ED3A can be adsorbed on
Coal surface, by the gas and CO of coal adsorption2Displacement comes out gasresolution.The mechanical property according to shown in data in table
Know that reinforcing agent can highly effective prevention and treatment bump.The each component concentration of reinforcing agent are as follows:
N- acyl group ED3A 5%,
Ammonium chloride 5%,
Remaining is water.
2) position that water injection hole is determined in coal seam, then starts to punch using drilling machine.Kong Jingwei 50mm, hole depth are
50m carries out gas drainage after punching, water injection pipe is injected water injection hole after extraction.Determine that water injection time is 10 days, infuses
Water pressure is 15MPa.
3) reinforcing agent N- acyl group ED3A opens hole with minerals effect cementing in coal body, causes the secondary hair of coal hole
It educates.The surface tension of solution is reduced simultaneously, and solution can enter subtleer hole after surface tension reduces.
Although an embodiment of the present invention has been shown and described, for those of ordinary skills, Ke Yili
Solution carries out a variety of modifications, replacement, variation and deformation to the embodiment of the present invention in the case where not departing from the principle of the invention and spirit,
The scope of the present invention is defined by the appended.
Claims (4)
1. a kind of low permeability coal seam fills the water erosion control reinforcing agent, which is characterized in that including following parts by weight of component:
Inorganic electrolyte 0.001%-20%
Chelate surfactant 0.001%-30%
Remaining is water.
2. low permeability coal seam as described in claim 1 fills the water erosion control reinforcing agent, it is characterised in that: the inorganic electrolyte is
Sodium chloride or ammonium chloride.
3. low permeability coal seam as described in claim 1 fills the water erosion control reinforcing agent, it is characterised in that: the chelating type surface is living
Property agent be N- acyl group ED3A.
4. low permeability coal seam as described in claim 1 fills the water erosion control reinforcing agent, it is characterised in that: the inorganic electrolyte weight
Amount part group is divided into 5%, and chelate surfactant parts by weight of component is 5%, and water parts by weight of component is 90%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308375.7A CN109971450A (en) | 2019-04-17 | 2019-04-17 | Low permeability coal seam fills the water erosion control reinforcing agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910308375.7A CN109971450A (en) | 2019-04-17 | 2019-04-17 | Low permeability coal seam fills the water erosion control reinforcing agent |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109971450A true CN109971450A (en) | 2019-07-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910308375.7A Pending CN109971450A (en) | 2019-04-17 | 2019-04-17 | Low permeability coal seam fills the water erosion control reinforcing agent |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819417A (en) * | 2019-11-26 | 2020-02-21 | 辽宁大学 | Method for treating coal-fired atmospheric pollution by coal seam water injection |
Citations (6)
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|---|---|---|---|---|
| CN1570353A (en) * | 2004-04-30 | 2005-01-26 | 北京科技大学 | Single-purpose water filling penetration stick and method for production |
| CN102337103A (en) * | 2011-07-11 | 2012-02-01 | 山东科技大学 | Penetrant for coal-bed flooding |
| WO2015108438A1 (en) * | 2014-01-17 | 2015-07-23 | Schlumberger Canada Limited | System and methodology for well treatment |
| CN108067175A (en) * | 2017-11-30 | 2018-05-25 | 中国矿业大学 | A kind of coal-bed flooding magnetization base anatonosis wetting agent preparation facilities |
| CN108084967A (en) * | 2017-11-29 | 2018-05-29 | 中国矿业大学 | A kind of magnetization base anatonosis wetting agent for improving coal-bed flooding and subtracting dirt effect |
| CN109538198A (en) * | 2018-11-12 | 2019-03-29 | 辽宁大学 | Prevent and treat soaked disaster gas injection in coal seam and the integrated experimental provision of punching and application |
-
2019
- 2019-04-17 CN CN201910308375.7A patent/CN109971450A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570353A (en) * | 2004-04-30 | 2005-01-26 | 北京科技大学 | Single-purpose water filling penetration stick and method for production |
| CN102337103A (en) * | 2011-07-11 | 2012-02-01 | 山东科技大学 | Penetrant for coal-bed flooding |
| WO2015108438A1 (en) * | 2014-01-17 | 2015-07-23 | Schlumberger Canada Limited | System and methodology for well treatment |
| CN108084967A (en) * | 2017-11-29 | 2018-05-29 | 中国矿业大学 | A kind of magnetization base anatonosis wetting agent for improving coal-bed flooding and subtracting dirt effect |
| CN108067175A (en) * | 2017-11-30 | 2018-05-25 | 中国矿业大学 | A kind of coal-bed flooding magnetization base anatonosis wetting agent preparation facilities |
| CN109538198A (en) * | 2018-11-12 | 2019-03-29 | 辽宁大学 | Prevent and treat soaked disaster gas injection in coal seam and the integrated experimental provision of punching and application |
Non-Patent Citations (1)
| Title |
|---|
| 董国君等: "《表面活性剂化学》", 31 August 2009, 北京理工大学出版社 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110819417A (en) * | 2019-11-26 | 2020-02-21 | 辽宁大学 | Method for treating coal-fired atmospheric pollution by coal seam water injection |
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Application publication date: 20190705 |
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