73212276
Apr 19, 1979
Jan 12, 1982
Earth Borehole Drilling, Completion and Work-Over Abandonment Chemicals-Namely, a Water-Soluble Chemical for Providing Thixotropic Properties and Non-Newtonian Characteristics to Waters and Brines Over a Wide Salinity Range, and which has the Ability to Suspend Solid Materials Such as Bridging Agents and Weighting Materials in Aqueous Solutions Containing Said Chemical
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