Method of and arrangement for obtaining liquids and/or gases from ground or rock layers
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United States of America Patent
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-
Sep 13, 1994
Grant Date -
N/A
app pub date -
Feb 5, 1993
filing date -
Feb 19, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
For obtaining liquids and/or gases contained in ground or rock formation, contaminants or useful substances, especially oils, at least one shaft is arranged in a corresponding region, a negative pressure is formed in the shaft provided with a casing having vertically spaced permeable and impermeable wall portions so as to produce a circulation of an available or introduced liquid from ground or rock formations through a first permeable wall region into the shaft, further in an axial direction of the shaft, and then through a second permeable wall region back into the ground or rock formations, gases entrained in the circulation of liquids are separated from the liquid by a negative pressure device, and a second shaft is arranged near the first mentioned shaft so that the circulations of liquid in the shafts touch or intersect one another.
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