Automated detection of plug and perforate completions, wellheads and wellsite operation status

A method for determining a pressure anomaly at a well in a completion operation, the method comprising:

• receiving pressure data from the one or more pressure sensors;
• monitoring the pressure data over a plurality of reference time windows, each of the plurality of reference time windows separated from temporally adjacent ones of the plurality of reference time windows by a corresponding delay period;
• and
• fitting the received pressure data from a first one of the plurality of reference time windows to a reference model curve to thereby obtain a first set of model parameters;
• fitting the received pressure data from a second one of the plurality of reference time windows to the reference model curve to thereby obtain a second set of model parameters;
• determining a difference between one or more of the parameters of the first and second sets of model parameters;
• and
• determining an existence of a pressure anomaly where the difference is greater than a configurable pressure anomaly threshold.