Patent ID: 7278496
Filing Date: 2007-10-09
Classification: E21B

Abstract:
1. A system for operating a well having a fluid flow path defined by an injection line ( 14 , 22 ) through which an inlet stream flows and a return line ( 27 ) through which an outlet stream flows, the system including, a pressure containment device ( means ( at least one pressure sensor ( a central data acquisition and control system ( software installed in said central data acquisition and control system ( a control device ( said software further arranged and designed to make a comparison between said real time ideal signal and a corresponding actual signal, said comparison yielding any discrepancy between said real time ideal signal and said corresponding actual signal, said software converting said discrepancy to a command value signal, and means for applying said command value signal to said control device ( said software further arranged and designed to provide identification of an influx or loss event and, based on such identification, pre-emptively send a signal to said control device, thereby pre-emptively adjusting backpressure to immediately control the event without interruption of drilling operations.