Invention Grant
US09249648B2 Continuous circulation and communication drilling system 有权
连续循环和通信钻井系统

Continuous circulation and communication drilling system
Abstract:
An apparatus for performing a wellbore operation includes a drill string having a rigid tubular section formed of a plurality of jointed tubulars and a plurality of valves positioned along the rigid tubular section. Each valve may have a radial valve controlling flow through a wall of the rigid tubular section and a signal relay device configured to convey information-encoded signals. Wellbore operations may be performed by transmitting signals using the signal relay devices.
Public/Granted literature
Information query
Patent Agency Ranking
0/0