E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/38 (2006.01) E21B 17/10 (2006.01) E21B 23/01 (2006.01)
Patent
CA 2744167
The device for conveying an oil-containing product from boreholes is disclosed, wherein at least one retention device for the temporary retention of solid matter is provided between the conveying pump in the lower region of the borehole and the upper end of the borehole at the earth's surface.
Lessmann Lorenz
Volkmann Elimar
LandOfFree
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