A segment of the well lining for use in the Construction of a set of well casing comprising a Pipe that carries this segment of the UCG Product gas which has opposite Open Ends for connection to segments of similar and well casing PERFORATION S located between opposed Open Ends; a set covering method and System.

摘要

A segment of the well lining for use in the Construction of a set of well casing comprising a Pipe that carries this segment of the UCG Product gas which has opposite Open Ends for connection to segments of similar and well casing PERFORATION S located between opposed Open Ends; a set covering method and System.