Method of and arrangement for driving volatile impurities from g

Details Method of and arrangement for driving volatile impurities from g Method of and arrangement for driving volatile impurities from g

1988-08-03

1989-12-12

Dang, Hoang C.

Wells

Processes

Separating material entering well

166 68, 166242, 166370, E21B 4300

Patent

active

048861197

ABSTRACT:
Driving of volatile impurities from a ground by mans of air is performed by aspirating an afterflow air and impurities containing gases which penetrated through a permeable wall of a shaft in a ground, at one or several locations in regions of expected high gas contents, air afterflow passages are extended to these regions for supplying the afterflow air, and an adjustable afterflow resistance is arranged in the passages for influencing a negative pressure value and a flow speed in these regions.

REFERENCES:
patent: 2764533 (1956-09-01), Oetjen et al.
patent: 2985238 (1961-05-01), Dixon
patent: 3743355 (1973-07-01), Blackwell et al.
patent: 3980138 (1976-09-01), Knopik
patent: 4183407 (1980-01-01), Knopik
patent: 4392531 (1983-07-01), Ippolito
patent: 4611950 (1986-09-01), Russomano
patent: 4660639 (1987-04-01), Visser et al.
patent: 4730672 (1988-03-01), Payne

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