Method of and arrangement for obtaining liquids and/or gases from ground or rock layers

A method of obtaining liquids and/or gases contained in ground or rock formations, contaminants or useful substances, particularly oils, comprising the steps of arranging at least one shaft in a corresponding region;

• subdividing the shaft by a transverse separation wall into an upper and a lower shaft region each having a substantially vertical fluid permeable wall;
• arranging a flow passage extending through the separating wall and provided with a circulating pump for producing a circulation of an available or introduced liquid from the ground or rock formations through one or both shaft regions into the shaft, further through the flow passage into another of the shaft regions, then from there back into the ground or rock formation;
• collecting the obtained liquid and/or gas in the shaft regions and aspiration of the liquids by means of probes through a filter or another separator;
• and
• providing a second such shaft which are arranged near the first mentioned shaft so that the circulations of liquid in the shafts touch or intersect one another.

An arrangement of obtaining liquids and/or gases contained in ground or rock formation, such as contaminants or useful substances, in particular oils, the arrangement comprising a shaft extending to a corresponding region of ground or gas formation;

• a transverse separating wall separating said shaft into shaft regions which are vertically spaced and sealed from one another;
• a substantially vertical permeable shaft wall for aspiration of liquids or gases from a surrounding area and for further introducing the liquids or gases into the surrounding area, said separating wall having an opening which forms a part of a flow path;
• a pump and a filter arranged so that said flow path leads through said pump and said filter;
• a shaft insert arranged in said shaft;
• a tube extending through said opening and said separating wall and forming a part of said shaft insert, said pump being formed as a circulating pump arranged on said shaft insert and transporting the liquid or gas through said permeable shaft wall;
• an upwardly open collecting chamber arranged on said shaft insert above said separating wall at least one point of the flow path provided for a liquid which has a different specific density from that of other a flow medium flowing through said shaft;
• an aspirating conduit which opens in said collecting chamber;
• and an additional shaft which opens in said collecting chamber;
• and an additional shaft which is arranged near the first mentioned shaft so that the circulations of liquid in the shafts touch or intersect one another.