Weight materials for use in cement, spacer and drilling fluids
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United States of America Patent
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Jun 23, 2015
Grant Date -
Mar 29, 2012
app pub date -
Sep 28, 2010
filing date -
Sep 28, 2010
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Abstract
A drilling fluid, spacer fluid and cementing compositions for use in subterranean wells are disclosed along with methods for making using same, where the compositions include a weighting system having an effective amount of a metal silicon alloy, mixtures of metal silicon alloys, or mixtures of metal silicon alloys and conventional weighting agents, to produce compositions having a desired high density, while retaining other fluid properties such as pumpability, gas tight sealing, low tendency to segregate, and reduced high temperature cement strength retrogression.
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