Multiple-stage coal seam fracing method
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United States of America Patent
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-
May 19, 1987
Issued Date -
N/A
app pub date -
Oct 17, 1985
filing date -
Jul 17, 1984
priority date (Note) -
Expired
status (Latency Note)
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Abstract
An improved method of multiple-stage hydraulic fracturing of coal seams to improve the rate and total recovery of gas therefrom. In one aspect, the improvement comprises completing the well with 7-inch or larger casing and 31/2 inch or larger tubing. In another aspect, the stagewise fracturing is continued until the following quantity of 60-140 mesh proppants has been deposited in the formation:
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