Patents Represented by Attorney M. D. Kean

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  • Non toxic, biodegradable well fluids
    Patent number: 5498596
    Abstract: Well fluids such as drilling muds, especially useful in offshore drilling, are formulated with a hydrocarbon oil blend of a low viscosity poly alpha-olefin (PAO) such as a low molecular weight oligomer of decene together with a C.sub.10 to C.sub.18 paraffinic hydrocarbon of petroleum origin and a C.sub.10 to C.sub.18 olefin such as dodecene-1 or tetradecene-1. The fluids exhibit good biodegradability and are non-toxic to marine organisms; they also meet viscosity and pour points specifications for formulation into oil based muds.
    Type: Grant
    Filed: September 29, 1993
    Date of Patent: March 12, 1996
    Assignee: Mobil Oil Corporation
    Inventors: Henry Ashjian, Larry C. Peel, Thomas J. Sheerin, Robert S. Williamson