Use of uncalcined/partially calcined ingredients in the manufacture of sintered pellets useful for gas and oil well proppants
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United States of America Patent
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Apr 21, 1987
Issued Date -
N/A
app pub date -
Apr 22, 1985
filing date -
Feb 9, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A composite, sintered, spherical pellet and a method for its manufacture are described. The pellet is prepared from at least one uncalcined or partially calcined ingredient selected from the group consisting of clay and bauxite materials, dust collector fines and alumina. The pellet may have an alumina-to-silica ratio from about 9:1 to about 1:1. The pellet has a specific gravity of less than 3.40. Use of such pellets in propping hydraulically fractured subterranean formations is also described.
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