Patent ID: 9068415
Filing Date: 2015-06-30
Classification: E21B

Abstract:
1. A method for using a disconnector drill string in a well bore comprising the steps of: introducing the disconnector drill string into the well bore, where the disconnector drill string has a disconnection sub, an internal fluid conduit, an operative length, first uphole section and a downhole section that are coupled together by the disconnection sub, the first uphole section positioned uphole of the downhole section along the operative length of the disconnector drill string, and where the well bore is defined by a well bore wall extending from the surface into a hydrocarbon-bearing formation and contains a well bore fluid; transmitting wirelessly a pre-designated command signal to the disconnection sub such that the disconnection sub selectively operates to uncouple the first uphole section of the disconnector drill string from the downhole section of the disconnector drill string, severing the internal fluid conduit of the disconnector drill string; and removing the first uphole section of the disconnector drill string from the well bore such that the downhole section of the disconnector drill string remains in the well bore; and introducing a second uphole section into the well bore, where the second uphole section has a disconnection sub on a distal end of the second uphole section, such that the disconnection sub is positioned proximate to the downhole section.