Preemptive setpoint pressure offset for flow diversion in drilling operations
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United States of America Patent
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Sep 20, 2016
Grant Date -
May 9, 2013
app pub date -
Oct 11, 2012
filing date -
Nov 8, 2011
priority date (Note) -
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Abstract
A method of controlling pressure in a well can include transmitting an instruction to change flow through an annulus formed radially between a drill string and a wellbore, and adjusting a pressure setpoint in response to the transmitting. A well drilling system can include a flow control device which varies flow through a drill string, and a control system which changes a pressure setpoint in response to an instruction for the flow control device to change the flow through the drill string. A method of controlling pressure in a well can include transmitting an instruction to divert flow from a drill string, and adjusting a pressure setpoint in response to the transmitting.
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