Alternative ligand formulations for cellulose products
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United States of America Patent
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May 9, 2017
Grant Date -
Feb 28, 2013
app pub date -
Jun 1, 2012
filing date -
Aug 30, 2011
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Abstract
This disclosure provides compositions suitable as drilling fluids, completion fluids, work-over fluids, or stimulation/fracking fluids, which exhibit shale inhibiting, thermostabilizing, viscosifying, and fluid loss reducing effects when used for these purposes. In some embodiments, this disclosure provides compositions that include a cellulose product comprising the contact product of: at least one cellulosic ether; at least one salt of a polyvalent metal ion; and at least one ligand or a salt of the ligand. The resulting cellulose products are useful in drilling of oil, gas, and other wells.
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