CN1057699A - Prevent the method that coal and gas are outstanding - Google Patents
Prevent the method that coal and gas are outstanding Download PDFInfo
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- CN1057699A CN1057699A CN 91102461 CN91102461A CN1057699A CN 1057699 A CN1057699 A CN 1057699A CN 91102461 CN91102461 CN 91102461 CN 91102461 A CN91102461 A CN 91102461A CN 1057699 A CN1057699 A CN 1057699A
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Abstract
A kind of coal and outstanding method of gas of preventing injected the chemical wettability agent in the coal seam, the composition of chemical wettability agent is a benzene compound, divalent salt solution, alcohol amine compound, acid and water.Can improve wettability power, prevent the outstanding of coal and gas effectively the coal seam.And the corrosion that can prevent to inject steel pipe.
Description
The invention belongs to mining industry, relate to and a kind of treatment measures are taked to give in the coal seam, prevent the method that coal and gas are outstanding.
Prevent from both at home and abroad at present except that drawing out methane, all to have used the coal-bed flooding measure to some extent in the outstanding method of coal and gas.Relevant with water prevent that outstanding measure from comprising the regional measure of the wetting protrusion-dispelling of coal-bed flooding, hydraulic loose, low pressure water injection are wetting, sluicing etc.But the result of these methods is that the water content in the coal seam is not high, and inhomogeneous, and long-term injecting water causes the corrosion of equipment such as injector, steel pipe, pump.U.S. Pat 4544208 has adopted in the coal seam method of injecting the graininess supporting agent, and Russian Patent SU1222851A provides gluey agent is injected into method in the coal seam, unresolved too the problems referred to above.
The objective of the invention is to prevent to propose in the outstanding comprehensive control measures of coal and gas a kind of method of in the coal seam, injecting the chemical wettability agent in the fluid injection extraction, this chemical wettability agent can improve water content in the coal, increase coal body gas permeability, water permeability, thereby prevents the problem of equipment corrosions such as the outstanding and solution injector of coal and gas, steel pipe, pump effectively.
The present invention is achieved through the following technical solutions: a kind of coal and outstanding method of gas of preventing, in the coal seam, inject the chemical wettability agent, the composition of chemical wettability agent is: benzene compound 0.01～0.04%, divalent salt solution 0.01～0.03%, alcohol amine compound 0.01～0.04%, acid 0.008～0.012%, surplus is a water.
The invention will be further described below in conjunction with Cui embodiment of the present invention.Benzene compound is a sodium alkyl benzene sulfonate in the chemical wettability agent, accounts for 0.02%; Divalent salt solution is calcium chloride and copper chloride,
Respectively account for 0.01% and 0.005% respectively; Alcohol amine compound is a triethanolamine, accounts for 0.02%; Used acid is hydrochloric acid, accounts for 0.008%.
The present invention has reached the purpose of the phase of giving.1, wetability, permeability.Adopting coal particle size is 50～55 orders, and the wetting agent liquid of 0.1% concentration is done the capillary absorption experiment.Improve 5.6～15.5 times with water than wettability power; Soak 10 minutes capillary rise heights and improve 4.6～12.7 times than water.Field experiment proof in Nan Tong mining area can make that water content is greater than 4% in the coal, and under equal conditions reservoir quantity is bigger than water injection rate.
2, add dissolubility.The methane solubilization improves 5.78 times than water, and the carbon dioxide solubilization improves 2.15 times than water.
3, specific area.
Utilize 0.1% concentration wetting agent liquid to handle southern paulownia 2504 coals, granularity 0.2～7mm, soak after 4 hours and to filter, oven dry, to pulverize back 80 orders and sieve specific area such as following table:
Handle coal sample prescription liquid kind specific area m
2/ g
Former coal sample 87.24
The present invention's wetting agent liquid 97.51
Water 86.38
4, corrosivity: the present invention of on-the-spot proof does not have corrosion to equipment such as impregnator, steel pipe, pumps, and protective effect is arranged.
Claims (2)
1, a kind of coal and outstanding method of gas of preventing injected the chemical wettability agent in the coal seam, it is characterized in that the composition of chemical wettability agent is:
Benzene compound 0.01～0.04%,
Divalent salt solution 0.01～0.03%,
Alcohol amine compound 0.01～0.04%,
Acid 0.008～0.012%,
Water surplus.
2, method according to claim 1, used benzene compound are that sodium alkyl benzene sulfonate accounts for 0.02%; Used divalent salt solution is calcium chloride and copper chloride, respectively accounts for 0.01% and 0.005% respectively; Used alcohol amine compound is a triethanolamine, accounts for 0.02%; Used acid is hydrochloric acid, accounts for 0.008%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91102461 CN1024211C (en) | 1991-04-22 | 1991-04-22 | Method of preventing coal burst and gas burst |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 91102461 CN1024211C (en) | 1991-04-22 | 1991-04-22 | Method of preventing coal burst and gas burst |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1057699A true CN1057699A (en) | 1992-01-08 |
| CN1024211C CN1024211C (en) | 1994-04-13 |
Family
ID=4905619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 91102461 Expired - Fee Related CN1024211C (en) | 1991-04-22 | 1991-04-22 | Method of preventing coal burst and gas burst |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1024211C (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337012C (en) * | 2004-10-28 | 2007-09-12 | 中国矿业大学 | Process of preparing thickened grout for preventing coal from spontaneous combustion and equipment therefor |
| RU2535852C1 (en) * | 2013-09-25 | 2014-12-20 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Белгородский государственный национальный исследовательский университет" | Method of obtaining heterogenic soil composite from wastes of iron ore dressing |
-
1991
- 1991-04-22 CN CN 91102461 patent/CN1024211C/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100337012C (en) * | 2004-10-28 | 2007-09-12 | 中国矿业大学 | Process of preparing thickened grout for preventing coal from spontaneous combustion and equipment therefor |
| RU2535852C1 (en) * | 2013-09-25 | 2014-12-20 | Федеральное государственное автономное образовательное учреждение высшего профессионального образования "Белгородский государственный национальный исследовательский университет" | Method of obtaining heterogenic soil composite from wastes of iron ore dressing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1024211C (en) | 1994-04-13 |
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| CF01 | Termination of patent right due to non-payment of annual fee |