Drilling fluids with improved shale inhibition and methods of drilling in subterranean formations
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United States of America Patent
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Aug 8, 2006
Grant Date -
Nov 25, 2004
app pub date -
Apr 10, 2003
filing date -
Apr 10, 2003
priority date (Note) -
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Abstract
The present invention provides improved drilling fluids that comprise improved shale inhibiting components, and methods for using these drilling fluids in connection with drilling in a subterranean formation. The drilling fluids comprise water and an improved shale inhibiting component. Optionally, other additives may be added to the drilling fluids of the present invention, including, inter alia, antifoams, biocides, bridging agents, corrosion control agents, dispersants, flocculants, fluid loss additives, foamers, H.sub.2S scavengers, lubricants, oxygen scavengers, salts, scale inhibitors, viscosifiers, and weighting agents.
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