	US 12,276,188 B2
	Optimizing drilling parameters for controlling a wellbore drilling operation
Abhishek Agrawal, Karnataka (IN); Shang Zhang, Fulshear, TX (US); and Robello Samuel, Cypress, TX (US)
Assigned to Landmark Graphics Corporation, Houston, TX (US)
Filed by Landmark Graphics Corporation, Houston, TX (US)
Filed on Jun. 14, 2022, as Appl. No. 17/840,314.
Prior Publication US 2023/0399936 A1, Dec. 14, 2023
Int. Cl. E21B 44/00 (2006.01)

CPC E21B 44/005 (2013.01) [E21B 2200/22 (2020.05)]

17 Claims

1. A system comprising:

a processor; and

a non-transitory computer-readable medium that includes instructions executable by the processor for causing the processor to perform operations comprising:

receiving input data indicating a current state of a wellbore drilling operation;

determining, by a plurality of software applications, a plurality of constraints associated with the wellbore drilling operation by:

using a hydro-mechanical specific energy model to determine a first constraint of the plurality of constraints; or

using an engineering model to determine a second constraint of the plurality of constraints;

determining, based on the plurality of constraints, an optimized window defined by a maximum acceptable value and a minimum acceptable value that define a range of stable values for a drilling parameter;

optimizing, by an optimization model and using the input data, the plurality of constraints, and the range of stable values, the drilling parameter subject to the constraints associated with the wellbore drilling operation; and

controlling, using the optimized drilling parameter, an automated rig of the wellbore drilling operation in an autonomous mode by issuing a command to a downhole tool for implementing the optimized drilling parameter.