Movable oxidizer injection point for production of coal in situ

Details Movable oxidizer injection point for production of coal in situ Movable oxidizer injection point for production of coal in situ

1982-09-28

1984-11-27

Suchfield, George A.

Wells

Processes

In situ combustion

166 50, 166263, E21B 43247

Patent

active

044846290

ABSTRACT:
After a linkage channel is established through an underground coal seam connecting two vertical wells, a tubing bender/straightener is positioned in a first well aligned with the linkage channel. Oxidizer injection tubing is inserted from the wellhead into the tubing bender/straightener. The tubing is forced through the tubing bender/straightener and on into the linkage channel. The coal is ignited and the fire sustained by continuous injection of oxidizer through the tubing, creating a reaction zone separated from the first well with products of reaction recovered through the second well.

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