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Application filed by Halliburton Energy Services IncfiledCriticalHalliburton Energy Services Inc
Priority to MYPI2011002278ApriorityCriticalpatent/MY153793A/en
Publication of MY153793ApublicationCriticalpatent/MY153793A/en
A WELL DRILLING SYSTEM FOR USE WITH A DRILLING FLUID PUMP (68) INCLUDES A FLOW CONTROL DEVICE (74) REGULATING FLOW FROM THE PUMP TO A DRILL STRING (16) INTERIOR; AND ANOTHER FLOW CONTROL DEVICE (76) REGULATING FLOW THROUGH A LINE IN COMMUNICATION WITH AN ANNULUS (20). FLOW IS SIMULTANEOUSLY PERMITTED THROUGH THE FLOW CONTROL DEVICES. A METHOD OF MAINTAINING A DESIRED BOTTOM HOLE PRESSURE INCLUDES DIVIDING DRILLING FLUID FLOW BETWEEN A LINE IN COMMUNICATION WITH A DRILL STRING INTERIOR AND A LINE IN COMMUNICATION WITH AN ANNULUS; THE FLOW DIVIDING STEP INCLUDING PERMITTING FLOW THROUGH A FLOW CONTROL DEVICE INTERCONNECTED BETWEEN A PUMP AND THE DRILL STRING INTERIOR; AND THE FLOW DIVIDING STEP INCLUDING PERMITTING FLOW THROUGH ANOTHER FLOW CONTROL DEVICE INTERCONNECTED BETWEEN THE PUMP AND THE ANNULUS, WHILE FLOW IS PERMITTED THROUGH THE FIRST FLOW CONTROL DEVICE.
MYPI2011002278A2008-12-192008-12-19Pressure and flow control in drilling operations
MY153793A
(en)