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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-
Nov 18, 1986
Issued Date -
N/A
app pub date -
Sep 30, 1983
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 comprises clay and a member of the group of bauxite, alumina, or mixtures thereof; the pellet being prepared from at least one uncalcined or partially calcined ingredient. 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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