Patent ID: 7934570
Filing Date: 2011-05-03
Classification: G01V,Y10T

Abstract:
1. A swivel for use with a rotating tool string, said swivel comprising: a body adapted for threaded connection in said rotating tool string, said body having a central bore configured to receive an electrically conductive medium therein; an electrically conductive receiver fixed to and disposed within said body; a reservoir formed in said body in electrical contact with said electrically conductive receiver; an electrically conductive fluid positioned in said reservoir in electrical contact with said electrically conductive reservoir; an electrically conductive arm that is fixed to the electrically conductive medium and sized to extend into said electrically conductive fluid; an electrically conductive structure attached to said electrically conductive arm to extend in part into said electrically conductive fluid in said reservoir, said electrically conductive structure being cylindrical and extending transverse to said arm; a rotary seal positioned about said electrically conductive medium to inhibit leakage of said electrically conductive fluid from said reservoir.