Electric field communication for short range data transmission in a borehole

Abstract

The present invention concerns application of a unique conductive electrode geometry used to form an efficient wideband, one- or two-way wireless data link between autonomous systems separated by some distance along a bore hole drill string. One objective is the establishment of an efficient, high bandwidth communication link between such separated systems, using a unique electrode configuration that also aids in maintaining a physically robust drill string. Insulated or floating electrodes of various selected geometries provide a means for, sustaining or maintaining a modulated electric potential adapted for injecting modulated electrical current into the surrounding sub-surface medium. Such modulated current conveys information to the systems located along the drill string by establishing a potential across a receiving insulated or floating electrode.

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Patent Citations (6)

    Publication numberPublication dateAssigneeTitle
    US-2354887-AAugust 01, 1944Stanolind Oil & Gas CoWell signaling system
    US-5160925-ANovember 03, 1992Smith International, Inc., Develco, Inc.Short hop communication link for downhole mwd system
    US-5160925-C1March 06, 2001Halliburton CoShort hop communication link for downhole mwd system
    US-5873990-AFebruary 23, 1999Andcare, Inc.Handheld electromonitor device
    US-5883516-AMarch 16, 1999Scientific Drilling InternationalApparatus and method for electric field telemetry employing component upper and lower housings in a well pipestring
    US-5924499-AJuly 20, 1999Halliburton Energy Services, Inc.Acoustic data link and formation property sensor for downhole MWD system

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    Publication numberPublication dateAssigneeTitle