Mossman Kumar & Tyler PC
Method to complex metals in aqueous treating fluids for VES-gelled fluids
Aqueous treating fluids may include a viscoelastic surfactant (VES) and an aqueous base fluid, e.g. a drilling fluid, whereby the VES may increase and/or maintain the viscosity of the aqueous treating fluid. Metal ions may be present within the aqueous treating fluid that break, reduce, and/or digest the VES within the aqueous treating fluid. An effective amount of complexation particles may be added to the aqueous treating fluid for complexing at least a portion of these metal ions and thereby disallowing the metal ions from breaking, reducing, and/or altering the VES within the aqueous treating fluid.
BAKER HUGHES INCORPORATED
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C09K C09K C09K C09K B82Y C09K
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James B. Tianping
Crews Huang