CN1057699A - Prevent the method that coal and gas are outstanding - Google Patents
Prevent the method that coal and gas are outstanding Download PDFInfo
- Publication number
- 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
- Authority
- CN
- China
- Prior art keywords
- coal
- outstanding
- gas
- prevent
- accounts
- Prior art date
- 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.)
- Granted
Links
Landscapes
- Solid Fuels And Fuel-Associated Substances (AREA)
- Liquid Carbonaceous Fuels (AREA)
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 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN101724389B (en) | Cross-linked acid sand fracturing acid liquid | |
EP0213095B1 (en) | Peroxygen breaker systems for well completion fluids | |
CN100418610C (en) | Composite decarbonizing solution for recovering carbon dioxide in waste gas | |
CN104329109A (en) | Gob retardant efficient spraying system and spraying method | |
NO320816B1 (en) | Well treatment fluid, and method for fracturing a subsurface formation penetrated by a borehole | |
CN102287176A (en) | Coal bed pressing crack liquid system | |
CN109763807A (en) | A kind of ground-dipping uranium extraction closed cycle pumping system and method | |
CN112029489B (en) | Formula and preparation method of low-pressure gas field old well re-production blockage removing working solution | |
CN102732890B (en) | Volatile corrosion inhibitor containing natural gas with carbon dioxide | |
CN108119092A (en) | Selective channeling sealing agent for flooding oil reservoir fire flooding production well and application of selective channeling sealing agent | |
CN102373036A (en) | Gas self-production agent, use of the gas self-production agent, and self-produced gas foam acidizing method for oil wells and water wells | |
CN1024211C (en) | Method of preventing coal burst and gas burst | |
CN102977876B (en) | Guar gum fracturing fluid with ultralow concentration and low-temperature coal-bed gas well fracturing method | |
JPS5822628A (en) | Electrospark machining method | |
CN102889094A (en) | Coal seam water injection system | |
CN111594124A (en) | Shallow tight oil reservoir imbibition fracturing method, fracturing system for shallow tight oil reservoir and discharge-free imbibition fracturing fluid | |
CN212535748U (en) | Colliery is gas and coal dust prevention and cure device in coordination in pit | |
CN109772104A (en) | A kind of pickling H2S SCAVENGER and its application method | |
CN111764956A (en) | Gas and coal dust cooperative prevention and control device and method for fully mechanized coal mining face magnetized surfactant | |
US3455393A (en) | Modifying water injection well profiles | |
CN112877046A (en) | Deep thickened oil blocking remover for oil well as preparation method and use method thereof | |
CN111963100A (en) | Water plugging method for fractured reservoir | |
CN202250153U (en) | Water injection system for coal seams | |
CN111592868A (en) | Fracturing fluid and preparation method and application thereof | |
CN109082269A (en) | Thickened oil block gas flooding method for water flooding development by associated gas after steam flooding desulfurization |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C06 | Publication | ||
PB01 | Publication | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
C19 | Lapse of patent right due to non-payment of the annual fee | ||
CF01 | Termination of patent right due to non-payment of annual fee |