BALANCE CONTROLLER IN THE PUMP STOCK DURING FRACTURING OPERATIONS Russian patent published in 2022 - IPC E21B41/00 F04B49/06 E21B43/26 

FIELD: controlling.

SUBSTANCE: group of inventions relates to automated fracturing with automatic control of the injection rate of the pump. The system for automatic control of the injection rate of the pump during hydraulic fracturing comprises: one or more processing units; a memory accessible to at least one of said one or more processing units; a data interface receiving data in real time for individual pumps in the pump stock during the hydraulic fracturing operation; a control interface transmitting control signals to control each of the individual pumps in the pump stock during the hydraulic fracturing operation; a productivity component; a control component. The productivity component is functionally linked with at least one of said one or more processing units and estimates the productivity of the pump in real time for each of the individual pumps in the pump stock, applying at least part of the data in real time. The estimated real-time productivity of pumps for the pump stock, calculated applying estimates, is therein less than the maximum predetermined productivity of pumps for the pump stock due to the deteriorated operation of at least one of the individual pumps. The control component is functionally linked with at least one of said one or more processing units and generates at least one of the engine throttle gate and transmission settings for each of the individual pumps for the target pump injection rate for the pump stock during a hydraulic fracturing operation, applying the estimated real-time productivity of the pump for each of the individual pumps. Said settings can be transmitted via the control interface in the form of one or more control signals.

EFFECT: processing pressure maintained within a safe range, uniform stimulation at several perforations, minimised downtime of the borehole during fracturing and between the stages.

25 cl, 29 dwg