US 12,345,145 B2
Method to control hydraulic fracturing spread with electric pumps
Zhijie Sun, Houston, TX (US); Yang Yu, Singapore (SG); Tirumani Swaminathan, Houston, TX (US); Ian Mitchell, Houston, TX (US); and Sergei Parsegov, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jul. 14, 2022, as Appl. No. 17/864,747.
Prior Publication US 2024/0026763 A1, Jan. 25, 2024
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 43/26 (2006.01); G05B 13/04 (2006.01); G05D 7/00 (2006.01)
CPC E21B 43/2607 (2020.05) [G05B 13/042 (2013.01); G05D 7/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A method of modifying a pumping stage of a pumping operation of a fracturing fleet at a wellsite, comprising:
receiving, by an optimization process executing on a computer system, an operating setpoint for each of a plurality of pump units; wherein the operating setpoint comprises a flowrate for a subsequent interval of a pumping procedure, wherein the flowrate of the subsequent interval is greater than the flowrate of a current interval, and wherein the pumping procedure comprises a plurality of intervals;
initiating, by the optimization process, a set of transfer function models in response to the operating setpoint for a first pumping unit comprising a flowrate value for the subsequent interval that decreases in value or remains the same value;
determining, by the optimization process, the transfer function model for each of the pump units;
generating, by the optimization process, an interim setpoint for each of the pumping units from the transfer function model, a current flowrate, and the operating setpoint, such that pump units of the plurality of pump units with increasing flowrates compensate for pump units of the plurality of pump units with decreasing flowrates while overall flowrate from the plurality of pump units increases;
iterating, by the optimization process, the interim setpoint to a subsequent value in response to the flowrate value from the plurality of the pump units measuring less than a threshold value of the operating setpoint; and
ending, by the optimization process, the set of transfer function models in response to the flowrate value from the plurality of the pump units measuring greater than a threshold value of the operating setpoint.