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Foam stimulation to enhance production from degasification wells in the Pittsburgh coalbed.

Authors
Steidl-PF
Source
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8286, 1978 Jan; :1-10
NIOSHTIC No.
10000681
Abstract
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.
Keywords
Mine-gases; Mining-industry; Methanes; Methane-drainage; Methane-control; Explosive-gases; Explosive-atmospheres; Underground-mining; Coal-mining; Control-technology; Engineering-controls; Sealing-compounds; Gas-filters; Gas-sampling; Coal-gas; Coal-gasification
CAS No.
74-82-8
Publication Date
19780101
Document Type
IH; Report of Investigations
Fiscal Year
1978
NTIS Accession No.
PB-281084
NTIS Price
A02
Identifying No.
RI-8286
NIOSH Division
PRC
Source Name
Pittsburgh, PA: U.S. Department of the Interior, Bureau of Mines, RI 8286
State
PA
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