CPC G01V 99/005 (2013.01) [E21B 43/26 (2013.01); E21B 47/06 (2013.01); E21B 2200/20 (2020.05)] | 26 Claims |
1. A system for forecasting pressures in a hydraulic fracturing system for a well, the system comprising:
a processing module executing code and configured to:
receive specifications for performing a hydraulic fracturing operation on a well, the specifications forecasting an array of flow rate information for frac fluid over time;
submit the array of flow rate information to a model incorporating a statistically based multivariate relationship operating on the flowrate information to
forecast pressure results including at least one of a bottomhole pressure time-based array and a surface pressure time based array, each of the pressure results being separable into pressure loss subcomponents,
determine a system of multipliers for statistical normalization of the pressure loss subcomponents,
calculate normalized pressure loss subcomponents obtained by multiplying the pressure loss subcomponents by selected multipliers obtained from the system of multipliers, and
provide normalized pressure forecast data on a basis of the normalized pressure loss subcomponents;
monitor observed pressure from the well as the hydraulic fracturing operation is underway by comparing the normalized pressure forecast data over time to the observed pressure from the well; and
take responsive action when monitoring of the observed pressure indicates an impending screen-out.
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