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Subsurface drill string

United States Patent

7,431,348
October 7, 2008
View the Complete Patent at the US Patent & Trademark Office
Idaho National Laboratory - Visit the Technology Transfer and Commercialization Office Website
A drill string comprises a first drill string member having a male end; and a second drill string member having a female end configured to be joined to the male end of the first drill string member, the male end having a threaded portion including generally square threads, the male end having a non-threaded extension portion coaxial with the threaded portion, and the male end further having a bearing surface, the female end having a female threaded portion having corresponding female threads, the female end having a non-threaded extension portion coaxial with the female threaded portion, and the female end having a bearing surface. Installation methods, including methods of installing instrumented probes are also provided.
Casper; William L. (Rigby, ID), Clark; Don T. (Idaho Falls, ID), Grover; Blair K. (Idaho Falls, ID), Mathewson; Rodney O. (Idaho Falls, ID), Seymour; Craig A. (Idaho Falls, ID)
Battelle Energy Alliance, LLC (Idaho Falls, ID)
11/ 621,448
20070120364
January 9, 2007
GOVERNMENT RIGHTS The United States Government has certain rights in this invention pursuant to Contract No. DE-AC07-99ID13727, and Contract No. DE-AC07-05ID14517 between the United States Department of Energy and Battelle Energy Alliance, LLC.