Through-drill string conveyed logging system
AssigneeShell Oil Company
InventorDouwe Johannes Runia
Life of this patent
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Abstract
A system for drilling and logging of a wellbore formed in an earth formation is provided. The system comprises a logging tool string and a drill string having a longitudinal channel for circulation of drilling fluid, the drill string including a port providing fluid communication between the channel and the exterior of the drill string, the channel and the port being arranged to allow the logging tool string to pass through the channel and from the channel through the port to a position exterior of the drill string. The system further comprises a removable closure element adapted to selectively close the port, wherein the logging tool string may be selectively connected to the closure element.
Claims10
A system for drilling and logging of a wellbore formed in an earth formation, the system comprising a logging tool string and a drill string having an exterior and an interior longitudinal channel for circulation of drilling fluid, the drill string including a port providing fluid communication between the channel and the exterior of the drill string, the channel and the port being arranged to allow the logging tool string to pass through the channel and from the channel through the port to a position exterior of the drill string, the system further comprising a removable closure element adapted to selectively close the port, wherein the logging tool string is provided with connecting means for selectively connecting the logging tool string to the closure element.
Dependencies are inferred from the claim text.