Preemptive setpoint pressure offset for flow diversion in drilling operations
First Claim
1. A method of controlling pressure in a well, the method comprising:
- measuring a well parameter;
predicting, via a flow control system;
a flow rate change of a fluid in the well from a diversion of fluid from the well based on the well parameter;
a pressure change in the well due to the predicted flow rate change; and
an adjustment to a pressure setpoint based on the predicted pressure change;
transmitting an instruction to a flow control device to divert flow of the fluid from the well; and
adjusting the pressure setpoint, via the flow control system, based on the predicted pressure setpoint adjustment and the instruction, to control the pressure in the well.
1 Assignment
0 Petitions
Accused Products
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.
-
Citations
9 Claims
-
1. A method of controlling pressure in a well, the method comprising:
-
measuring a well parameter; predicting, via a flow control system; a flow rate change of a fluid in the well from a diversion of fluid from the well based on the well parameter; a pressure change in the well due to the predicted flow rate change; and an adjustment to a pressure setpoint based on the predicted pressure change; transmitting an instruction to a flow control device to divert flow of the fluid from the well; and adjusting the pressure setpoint, via the flow control system, based on the predicted pressure setpoint adjustment and the instruction, to control the pressure in the well. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
Specification