E - Fixed Constructions – 21 – C
Patent
E - Fixed Constructions
21
C
262/10
E21C 37/16 (2006.01) E21B 43/12 (2006.01) E21B 43/24 (2006.01)
Patent
CA 2016991
Abstract Of The Invention The recovery of materials from viscous bodies of petroleum residue and asphalt deposits which contain substantial quantities of the deposits by the use of an induced thermal gradient in a region of such a viscous body in which there is located a screw-like pump. GEP007
Great Eastern (bermuda) Ltd.
Sim & Mcburney
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