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Earth Boring, Well Treating, And Oil Field Chemistry > Well Treating > Contains Organic Component > Organic Component Is Lignin Or Humate Or Derivative Thereof (e.g., Tannin, Quebracho Extract, Etc.) Organic Component Is Lignin Or Humate Or Derivative Thereof (e.g., Tannin, Quebracho Extract, Etc.)Organic Component Is Lignin Or Humate Or Derivative Thereof (e.g., Tannin, Quebracho Extract, Etc.) patent applications listed are from June 2005 to current and include Date, Patent Application Number, Patent Title, Patent Abstract summary and are linked to the corresponding patent application page.11/09/06 - 20060252652 - Oil base fluids containing hydrophilic tannins The invention provides oil base well drilling and servicing fluids (OBWDSF) containing a hydrophilic tannin to decrease the fluid loss of the OBWDSF. The hydrophilic tannin, which may be sulfited, is preferably selected from the group consisting of quebracho, wattle, and mixtures thereof. The OBWDSF will contain from about 50% ... ### FreshPatents.com Support |