Patent ID: 11939854
Assignee: BJ ENERGY SOLUTIONS, LLC
Field: Civil engineering (Other fields)
Classification: CPC E  G | IPC E  G

Claim 0:
1. A method of detecting and mitigating well screen out at a fracturing well site, the method comprising:
operating one or more fracturing pumps to pump fluid to a wellhead at the fracturing well site;
sensing a fluid pressure of the fluid when supplied to the wellhead with one or more sensors;
measuring the fluid pressure of the fluid supplied to the wellhead; and
in response to:
(i) a fluid pressure increase rate of the fluid supplied to the wellhead being greater than a preselected increase rate, and
(ii) the fluid pressure of the fluid when supplied to the wellhead being greater than a preselected percentage of a selected maximum wellhead pressure:
decreasing incrementally, by a controller in communication with the one or more fracturing pumps and one or more blenders, a discharge rate of the one or more fracturing pumps and a flow rate of the fluid, the decreasing incrementally a discharge rate of the one or more fracturing pumps and a flow rate of the fluid including stopping delivery of the fluid prior to decreasing the discharge rate of the one or more fracturing pumps.