Adaptive hydraulic fracturing controller for controlled breakdown technology
AssigneeHalliburton Energy Services, Inc.
InventorsMehdi Sebdani Mazrooee, Michael Linley Fripp, Matthew Lewis Lahman, Mark Allen Adams
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Abstract
A method for hydraulically fracturing a subterranean formation includes sending a first command from a controller to a pump to achieve a first target flow rate for a fracturing fluid being injected into a subterranean formation during a fracturing operation. Monitoring an injection property of the fracturing operation. Determining a rate of change of the pressure over a first time period. Determining, by the controller, a second target flow rate based, at least in part, on the rate of change of the pressure. Sending a second command from the controller to the pump to achieve the second target flow rate for the fracturing fluid.
Claims20
A method comprising:
- sending a first command from a controller to a pump to achieve a first target flow rate for a fracturing fluid being injected into a subterranean formation during a fracturing operation;
- monitoring an injection property of the fracturing operation;
- determining a rate of change of the injection property over a first time period;
- determining, by the controller, a second target flow rate based, at least in part, on the rate of change of the injection property, wherein determining the second target flow rate comprises,
- based on determining that the rate of change over the first time period indicates an increase or a decrease exceeding a threshold, reducing or increasing a value of a flow rate step;
- and
- determining the second target flow rate to be the first target flow rate plus the flow rate step;
- and
- sending a second command from the controller to the pump to achieve the second target flow rate for the fracturing fluid.
A fracturing control system comprising:
- a fluid system that mixes and dispenses a fracturing fluid;
- a pump which receives and conveys the fracturing fluid into a wellbore to hydraulically fracture a subterranean formation;
- and
- a controller communicably coupled to and configured to operate the pump, wherein the controller comprises a processor and a machine-readable medium having program code executable by the processor to cause the controller to:
- send a first command to the pump to achieve a first target flow rate for a fracturing fluid being injected into a subterranean formation;
- monitor a pressure of the fracturing fluid being injected into the subterranean formation;
- determine a rate of change of the pressure over a first time period;
- determine a second target flow rate based, at least in part, on the rate of change of the pressure, wherein determining the second target flow rate comprises,
- based on determining that the rate of change over the first time period indicates an increase or a decrease exceeding a threshold, reducing or increasing a value of a flow rate step;
- and
- determining the second target flow rate to be the first target flow rate plus the flow rate step;
- and
- send a second command to the pump to achieve the second target flow rate for the fracturing fluid.
One or more non-transitory machine-readable media having program code stored therein, the program code to:
- send a first command to a pump to achieve a first target flow rate for a fracturing fluid being injected into a subterranean formation;
- monitor a pressure of the fracturing fluid being injected into the subterranean formation;
- determine a rate of change of the pressure over a first time period;
- determine a second target flow rate based, at least in part, on the rate of change of the pressure, wherein determining the second target flow rate comprises,
- based on determining that the rate of change over the first time period indicates an increase or a decrease exceeding a threshold, reducing or increasing a value of a flow rate step;
- and
- determining the second target flow rate to be the first target flow rate plus the flow rate step;
- and
- send a second command to the pump to achieve the second target flow rate for the fracturing fluid.
Dependencies are inferred from the claim text.