Process for production of oil and gas through horizontal drainholes from underground workings
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United States of America Patent
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-
Aug 6, 1985
Grant Date -
N/A
app pub date -
Aug 3, 1984
filing date -
Aug 3, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method for collecting oil from a plurality of spaced-apart oil-bearing subterranean formations includes the steps of drilling a shaft from the earth's surface to a depth sufficient to intersect a plurality of spaced-apart oil-bearing formations, excavating a working area at selected oil-bearing subterranean formations and thereafter drilling a plurality of generally horizontal boreholes from each of the working areas into the selected oil-bearing subterranean formations. Thereafter, oil collection troughs are excavated within each of the working areas to collect oil from the boreholes and conduct the collected oil into a sump from which the oil is raised to the earth's surface utilizing a single lift. During collection and raising of the oil from each of the spaced-apart oil-bearing subterranean formations, the shaft and working areas are sealed.
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