CLOSED-LOOP CIRCULATING—1: Advanced pressure control improves kick, loss detection

David PavelBrian GraysonWeatherford International Ltd.HoustonClosed-loop circulating provides pressure control in many drilling and completion applications for which conventional fluid return systems are inadequate.Flexible and scalable to the task, these systems redefine well control with advances in event detection and management and new capabilities for acquiring geophysical and petrophysical data.Pressure control while drilling and completing a well is fundamental to operational and economic success for exploration wellbores, where drillability is often at stake, as well as in development wells for reasons of economic viability.In all cases, risk mitigation and the safety of personnel...

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