Movable oxidizer injection point for production of coal in situ
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United States of America Patent
Stats
-
Nov 27, 1984
Grant Date -
N/A
app pub date -
Sep 28, 1982
filing date -
Sep 28, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
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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