Drilling fluids containing polyethoxylated tetraalkyl acetylenic diols
Patent 4053422 Issued on October 11, 1977. Estimated Expiration Date: 
October 11, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
October 11, 1994. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3027324 3284352 3819522 3822299 InventorAssigneeApplicationNo. 05/696661 filed on 06/16/1976US Classes:507/109, Includes metal compound other than an alkali or alkaline earth metal compound (e.g., Al, Cr, Fe, Mn, Cu, etc.)507/134, Organic component contains sulfur attached directly or indirectly to carbon by nonionic bonding507/136Organic component contains ether linkage (e.g., PEG ether, etc.)ExaminersPrimary: Guynn, Herbert B.Attorney, Agent or FirmAbstractAqueous drilling fluids containing a minor amount of polyethoxylated tetraalkyl acetylenic diols. Such fluids are especially useful where reduced torque drilling fluids are needed. Another embodiment of this invention relates to a method of drilling utilizing the above-described fluids.Other References
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