Drilling fluids
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United States of America Patent
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Mar 14, 2006
Issued Date -
N/A
app pub date -
Nov 7, 2002
filing date -
Nov 8, 2001
priority date (Note) -
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Abstract
Drilling fluid additives that act to control clay swelling in drilled formations without adversely effecting the properties of the drilling fluid. The drilling fluid additives preferably comprise a polyether amine, a polyether amine derivative, or mixtures thereof. Drilling fluids that comprise such drilling fluid additives and a method of reducing clay swelling in drilled formations are also disclosed.
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