FIELD: mining.
SUBSTANCE: surfactant selection method is offered for wetting of hard coals using permeability coefficient which comprises preparation of coal samples with regular geometrical shape, placing of measuring cylinder on the sample itself, determination of the filtered water surfactant solution, time of filtering, and permeability coefficient, which is determined under the given mathematical expression. Then repeating the measurings for consistently increased surfactant concentration, the correlation profile for the permeability coefficient against surfactant concentration is plotted, and similar measurements with other surfactant types using similar samples are performed. Meanwhile the most efficient surfactant and its concentration are determined by the maximum value of the permeability coefficient for all curves.
EFFECT: improvement of mine safety due to increase of efficiency of wetting of boundary zones of coal beds.
3 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF SELECTING SURFACTANTS FOR WETTING OF BITUMINOUS COALS | 1998 |
|
RU2162154C2 |
| METHOD FOR DETERMINING PERMEABILITY OF POROUS COLLECTORS OF OIL AND GAS | 1992 |
|
RU2054653C1 |
| METHOD OF SUPPRESSING DYNAMIC EFFECTS AT DEVELOPING COAL SEAMS | 1992 |
|
RU2034991C1 |
| METHOD TO DETERMINE METHANE RISK OF DEVELOPING ENTRY | 2012 |
|
RU2515459C1 |
| METHOD FOR CREATING AND OPERATING AN UNDERGROUND GAS STORAGE FACILITY IN AN AQUIFEROUS GEOLOGICAL STRUCTURE | 2021 |
|
RU2770028C1 |
| METHOD FOR EFFICIENT DETECTION OF COAL BED MOISTURE | 2012 |
|
RU2513465C1 |
| METHOD OF DETERMINING QUANTITY OF REAGENTS FOR TREATMENT OF DRILLING MUD | 1997 |
|
RU2131902C1 |
| METHOD OF SELECTING A LIQUID TO FIGHT COAL DUST | 0 |
|
SU909211A1 |
| METHOD FOR VIBRO-WAVE ACTION IN ORDER TO RESTORE THE PRODUCTIVITY OF WELLS WITH HYDRAULIC FRACTURING | 2021 |
|
RU2778117C1 |
| METHOD OF PRELIMINARY DEGASSING OF COAL BED | 2013 |
|
RU2534881C1 |
