CN102337103B - Penetrant for coal-bed flooding - Google Patents
Penetrant for coal-bed flooding Download PDFInfo
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- CN102337103B CN102337103B CN2011101914410A CN201110191441A CN102337103B CN 102337103 B CN102337103 B CN 102337103B CN 2011101914410 A CN2011101914410 A CN 2011101914410A CN 201110191441 A CN201110191441 A CN 201110191441A CN 102337103 B CN102337103 B CN 102337103B
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Abstract
The invention relates to a penetrant for coal-bed flooding. The penetrant comprises the following components by weigh percent: 0.01%-0.10% of sodium dodecyl sulfate, 0.01%-0.10% of sodium diisooctylester sulfosuccinate, 0.01%-0.10% of dodecylbetaine, 0.01%-0.10% of sodium oleoyl methyl ethanesulfonate, 0.1%-1.0% of calcium chloride and the balance of water. By using the penetrant for coal-bed flooding in the invention, the problems that a coal bed is not easily wetted and penetrated by water can be effectively solved, the efficiency of coal-bed flooding is improved, the flooding amount, wetting radius and flooding speed of the coal bed are greatly improved, the production amount of working face coal dust is effectively reduced, accident potential is eliminated, and coal mining efficiency is improved.
Description
Technical field
The present invention relates to a kind of coal-bed flooding chemical additive, relate in particular to a kind of penetrant for coal-bed flooding.
Background technology
Coal-bed flooding is the important technical of the multiple disaster of colliery control, dust-producing amount in the time of can effectively reducing the coal body fragmentation by coal-bed flooding, prevent the generation of impulsion pressure, coal and Gas Outburst disaster, and by increasing the thermal conductivity of coal body, reduce coal temperature, the prevention Period of Coal Seam Spontaneous Combustion.In addition, coal-bed flooding can be softened hard coal body, and drawing speed is accelerated, and improves producing coal amount and efficiency.During coal-bed flooding, be at first water under pressure,, along coal body crack and macroporous process of osmosis, be water carries out under the physics chemical action such as capillary force and surface phenomena autokinesis then.From seepage theory and Surface Physical Chemistry theory as can be known, liquid wants real Wetting Coal to depend primarily on the character of liquid and coal body itself.On liquid properties, the significant parameter that embodies the tensio-active agent wetting ability is surface tension, and surface tension is lower, more is easy to sprawl, and wetting ability is stronger.In coal seal water-infusion technology, coal body is unmodifiable, therefore needs to reduce the surface tension of water to improve water injection rate.Coal-bed flooding for many years facts have proved,, because the surface tension of water is larger, is difficult to penetrate into some low permeability coal seams, so flood effectiveness is poor.
The coal surface-modifying agent is to form the outside adsorption layer of hydrophilic group by the adsorption surface promoting agent to improve its wettability.All in low strength range, the surface tension of solution is significantly reduced, and make the solute large material of the more inner concentration of concentration from the teeth outwards, be called tensio-active agent.Tensio-active agent has two common features, and the one, the amphiphile, amphiphilic molecule on chemical structure, namely an end of molecule is hydrophilic, is called hydrophilic polar group, and the other end oleophylic or close gas are called the nonpolar group of hydrophobic; The 2nd, the aligning of molecule on the solution surface layer state, namely a hydrophilic end inserts in water, and an end of hydrophobic stretches to air.Due to amphiphilic, they can cover the aqueous vapor surface to reduce the surface tension of water as far as possible; Because molecular orientation is arranged, just can hold more molecule in certain upper layer, surface tension is down to minimum.By the permeate agent that configuration consists of the different surfaces promoting agent, can reduce the surface tension of water, improve the performances such as wetting, infiltration of water, can reach thus the wetting radius that increases coal-bed flooding, enlarge injection area and improve water injection rate and waterflood injection rate.Therefore should use reduce that the water surface tension ability is the strongest, most effective tensio-active agent is as penetrant for coal-bed flooding.
Find through the literature search to prior art, Lee completely discloses a kind of coal dust inhibitor in patent CN101457137, the main chemical compositions of this coal dust inhibitor is alkyl phenol ether (carbon chain lengths is 8-9, and the EO polymerization degree is 10-15) and dodecylbenzene and AES(fatty alcohol-polyoxyethylene ether).In the coal-bed flooding process, add this coal dust inhibitor, can strengthen the penetrating power of water, obviously shorten the coal-bed flooding time, effectively improve flood effectiveness, reduce the Dust Concentration of coal mining activity environment.But when this type of medicament of application was controlled the coal dust of higher metamorphic grade, often effect was not good enough.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, aim to provide a kind of surface tension that reduces water, improve the penetrant for coal-bed flooding of water to coal seam infiltration and wetting ability,, to improve water injection rate, reduce the probability of occurrence of coal mining accident.
Consisting of of penetrant for coal-bed flooding of the present invention: by mass percentage, it comprises the sodium laurylsulfonate of following component: 0.01%-0.10%, the sulfo-succinic acid Diisooctyl sodium of 0.01%-0.10%, the empgen BB of 0.01%-0.10%, the oleoyl methylamine ethyl sulfonic acid sodium of 0.01%-0.10% and the calcium chloride of 0.1%-1.0%, and surplus is water.
The preferred group of above-mentioned penetrant for coal-bed flooding becomes: by mass percentage, it comprises the sodium laurylsulfonate of following component: 0.03%-0.05%, the sulfo-succinic acid Diisooctyl sodium of 0.02%-0.03%, the empgen BB of 0.02%-0.03%, the oleoyl methylamine ethyl sulfonic acid sodium of 0.04%-0.06% and the calcium chloride of 0.4%-0.5%, and surplus is water.
The present invention has following useful technique effect:
Penetrant for coal-bed flooding provided by the present invention, sodium laurylsulfonate wherein, sulfo-succinic acid Diisooctyl sodium, empgen BB and oleoyl methylamine ethyl sulfonic acid sodium are all to have surface-active material, after water-soluble, greatly reduce the surface tension of water; In addition, due to Ca
2+The existence of ion, can further strengthen by salt effect the wettability of the permeate agent aqueous solution; After adding a small amount of this permeate agent and reach working concentration in water, can effectively solve coal seam and be difficult for a difficult problem moistening by water, infiltration, improved the efficiency of coal-bed flooding, make coal-bed flooding amount, wetting radius and waterflood injection rate obtain respectively in various degree raising, effectively reduce the generation of working face coal dust, eliminate accident potential, and improved coal mining efficiency.
Embodiment
Below with reference to specific embodiment, the present invention is described in further detail:
Embodiment 1
Add 0.01g sodium laurylsulfonate, 0.1g sulfo-succinic acid Diisooctyl sodium, 0.1g empgen BB, 0.04g oleoyl methylamine ethyl sulfonic acid sodium and 0.4g calcium chloride in 99.35g water, stirred 30 minutes under normal temperature, obtain penetrant for coal-bed flooding.
Embodiment 2
Add 0.1g sodium laurylsulfonate, 0.01g sulfo-succinic acid Diisooctyl sodium, 0.01g empgen BB, 0.1g oleoyl methylamine ethyl sulfonic acid sodium and 1.0g calcium chloride in 98.87g water, stirred 50 minutes under normal temperature, obtain penetrant for coal-bed flooding.
Embodiment 3
Add 0.03g sodium laurylsulfonate, 0.02g sulfo-succinic acid Diisooctyl sodium, 0.03g empgen BB, 0.01g oleoyl methylamine ethyl sulfonic acid sodium and 0.5g calcium chloride in 99.41g water, stirred 30 minutes under normal temperature, obtain penetrant for coal-bed flooding.
Embodiment 4
Add 0.05g sodium laurylsulfonate, 0.03g sulfo-succinic acid Diisooctyl sodium, 0.02g empgen BB, 0.06g oleoyl methylamine ethyl sulfonic acid sodium and 0.1g calcium chloride in 99.74g water, stirred 60 minutes under normal temperature, obtain penetrant for coal-bed flooding.
Embodiment 5
Add 0.01g sodium laurylsulfonate, 0.1g sulfo-succinic acid Diisooctyl sodium, 0.1g empgen BB, 0.04g oleoyl methylamine ethyl sulfonic acid sodium and 0.4g calcium chloride in 99.35g water, stirred 30 minutes under normal temperature, obtain penetrant for coal-bed flooding.
With the penetrant for coal-bed flooding shown in embodiment 1-5 and in the market commonly used permeate agent A Zai Xing village coal face carry out rig-site utilization, measure single hole water injection rate and single hole waterflood injection rate by the meter readings that is arranged on water injecting pipeline, by the wetting radius of the on-the-spot drilling observation moistening degree measurement of coal body, result is as shown in table 1:
Table 1
| Permeate agent | Embodiment 1 | Embodiment 2 | Embodiment 3 | Embodiment 4 | Embodiment 5 | Permeate agent A |
| The single hole water injection rate, m 3 | 62.4 | 63.2 | 66.2 | 64.7 | 66.7 | 24.7 |
| The single hole waterflood injection rate, m 3/d | 22.5 | 23.1 | 22.8 | 23.4 | 23.2 | 12.3 |
| Wetting radius, m | 6.9 | 7.0 | 7.5 | 7.2 | 7.1 | 5.1 |
As can be seen from the above table, A compares with permeate agent, and the single hole water injection rate of the described permeate agent of embodiment 1-5 has improved respectively 153%, 156%, 168%, 162%, 170%; The single hole waterflood injection rate has improved respectively 83%, 88%, 85%, 90%, 87%; Wetting radius has improved respectively 35%, 37%, 47%, 41%, 39%.
Should be understood that; above-mentioned description for preferred embodiment is comparatively detailed; do not breaking away from the scope situation that the claims in the present invention protect; can also make the various deformation such as replacement, simple combination; within these all fell into protection scope of the present invention, the scope that the present invention asks for protection should be as the criterion with claims.
Claims (2)
1. penetrant for coal-bed flooding, it is characterized in that, by mass percentage, it comprises the sodium laurylsulfonate of following component: 0.01%-0.10%, the sulfo-succinic acid Diisooctyl sodium of 0.01%-0.10%, the empgen BB of 0.01%-0.10%, the oleoyl methylamine ethyl sulfonic acid sodium of 0.01%-0.10% and the calcium chloride of 0.1%-1.0%, and surplus is water.
2. penetrant for coal-bed flooding according to claim 1, it is characterized in that, by mass percentage, it comprises the sodium laurylsulfonate of following component: 0.03%-0.05%, the sulfo-succinic acid Diisooctyl sodium of 0.02%-0.03%, the empgen BB of 0.02%-0.03%, the oleoyl methylamine ethyl sulfonic acid sodium of 0.04%-0.06% and the calcium chloride of 0.4%-0.5%, and surplus is water.
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| CN2011101914410A CN102337103B (en) | 2011-07-11 | 2011-07-11 | Penetrant for coal-bed flooding |
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| CN2011101914410A CN102337103B (en) | 2011-07-11 | 2011-07-11 | Penetrant for coal-bed flooding |
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| CN102337103B true CN102337103B (en) | 2013-11-20 |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103087680B (en) * | 2013-02-04 | 2016-10-05 | 中矿龙科能源科技(北京)股份有限公司 | Coal seam injection enhancement agent |
| CN104531073B (en) * | 2015-01-15 | 2016-06-01 | 山东科技大学 | A kind of enhancing is to the dust-inhibitor of grit and coal body infiltration wetting effect |
| CN104549037A (en) * | 2015-01-22 | 2015-04-29 | 南通优尼科化工有限公司 | Penetrant |
| CN104549038A (en) * | 2015-01-27 | 2015-04-29 | 海安县亚太助剂有限公司 | Fat-dissolving defoaming penetrant |
| CN105255450B (en) * | 2015-10-29 | 2018-05-04 | 中国矿业大学 | A kind of preparation method for the moist type dedusting agent for reducing coal dust |
| CN108865067A (en) * | 2017-05-08 | 2018-11-23 | 山东科技大学 | A kind of hyposmosis pumping water into coal water conservation friction reducer |
| CN108084967B (en) * | 2017-11-29 | 2020-05-19 | 中国矿业大学 | Magnetizing base permeation-increasing wetting agent for improving coal seam water injection and dust reduction effects |
| CN109971450A (en) * | 2019-04-17 | 2019-07-05 | 辽宁大学 | Low permeability coal seam fills the water erosion control reinforcing agent |
| CN112342007B (en) * | 2020-10-21 | 2022-05-31 | 山东科技大学 | Coal and gas mining integrated anti-reflection enhancer, preparation method and application |
| CN112412523A (en) * | 2020-10-23 | 2021-02-26 | 山东科技大学 | Coal bed moistening method based on mussel bionic principle |
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| US3954662A (en) * | 1972-02-14 | 1976-05-04 | Monsanto Research Corporation | Aqueous foam compositions to suppress coal dust |
| SE398254B (en) * | 1975-07-01 | 1977-12-12 | Atlas Copco Ab | WAY TO PREVENT STENDAMM FROM DUSTING |
| GB1561733A (en) * | 1975-09-19 | 1980-02-27 | Sidaway J | Hardness testing machine |
| WO2004039911A1 (en) * | 2002-10-07 | 2004-05-13 | Dzuduelija, Nedeljko | A process to obtain an agent preventing damaging effects of dust and its application on surface and terrains |
| CN101979834A (en) * | 2009-11-25 | 2011-02-23 | 山东科技大学 | Dust settling agent for coal mine and using method thereof |
| CN101712861B (en) * | 2009-11-25 | 2012-12-12 | 山东科技大学 | Wet type dust-laying agent composition and use method thereof |
| CN101717617B (en) * | 2009-11-25 | 2012-07-25 | 山东科技大学 | Dedusting agent composition and using method thereof |
| CN101735771B (en) * | 2009-12-01 | 2012-11-21 | 北京精诚博桑科技有限公司 | Dust fall agent for water mist dust fall |
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