Additive compositions for drilling fluids and methods for their use

There is disclosed an additive composition for a drilling fluid, as well as a method of increasing the lubricity and reducing the coefficient of friction of a drilling fluid. The additive composition contains a polymeric ester formed from the reaction product of i) a triglyceride of a hydroxy fatty...

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Bibliographische Detailangaben
Hauptverfasser: Mettath, Sashikumar, Chang, Zen-Yu
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung:There is disclosed an additive composition for a drilling fluid, as well as a method of increasing the lubricity and reducing the coefficient of friction of a drilling fluid. The additive composition contains a polymeric ester formed from the reaction product of i) a triglyceride of a hydroxy fatty acid; ii) at least one dicarboxylic acid or an ester or anhydride thereof; iii) and a polyalkylene glycol.