Lightweight oil and gas well proppants and methods for making and using same
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United States of America Patent
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May 1, 1990
Issued Date -
N/A
app pub date -
Jan 17, 1989
filing date -
Aug 2, 1988
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A lightweight oil and gas well proppant made by simultaneously mixing and compacting a milled calcined kaolin clay powder to form green pellets and then drying, screening and sintering the pellets to form proppant pellets having a specific gravity of 3.0 or less and a conductivity of at least 4,200 millidarci-feet and preferably at least 5,100 md-ft as measured by the Stim-Lab method after 50 hours at 8,000 psi and 275.degree. F. in the presence of deoxygenated aqueous 2% solution of KCl.
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