Mining Publication: Foam Stimulation To Enhance Production From Degasification Wells in the Pittsburgh Coalbed
Original creation date: January 1978
Seven degasification wells have been completed in the Pittsburgh coalbed at the New Emerald Mine near Waynesburg, Pennsylvania. Funding was provided by the Bureau of Mines to perform stimulation treatments on five of the wells, to show that this is a feasible and economical means of degasifying part of a coalbed. The seven wells ranged in depth from 590 to 910 feet. Stimulation treatments used 25,260 to 42,660 gallons of foam and 7,400 to 12,800 pounds of 20/40-mesh prop sand. Pumping rates were 10.8 to 11.6 Bbl/min and treating pressures were from 1,050 to 1,600 psig. On the day following stimulation, gas production ranged from a few hundred cubic feet per day to more than 100,000 cu ft/day.
Authors: PF Steidl
Report of Investigations - January 1978
NIOSHTIC2 Number: 10000681
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8286, 1978 Jan; :1-10
- Degasification System Selection for U.S. Longwall Mines Using an Expert Classification System
- Demonstration of Safety Plugging of Oil Wells Penetrating Appalachian Coal Mines
- Directionally Controlled Drilling To Horizontally Intercept Selected Strata, Upper Freeport Coalbed, Greene County, Pa.
- Drainage of Methane From the Overlying Pocahontas No. 4 Coalbed From Workings in the Pocahontas No. 3 Coalbed
- Improved Methods for Monitoring Production From Vertical Degasification Wells
- Methane Control by Isolation of a Major Coal Panel - Pittsburgh Coalbed
- Methane Gas Content of the Mary Lee Group of Coalbeds, Jefferson, Tuscaloosa, and Walker Counties, Ala.
- Reservoir Rock Properties of Coal Measure Strata of the Lower Monongahela Group, Greene County (Southwestern Pennsylvania), from Methane Control and Production Perspectives
- Rotary Drilling Techniques Used in the Beckley Coalbed
- Use of Vertical Boreholes for Assisting Ventilation of Longwall Gob Areas
- Content source: National Institute for Occupational Safety and Health, Mining Program