CPC E21B 43/26 (2013.01) [E21B 21/08 (2013.01); E21B 43/14 (2013.01)] | 20 Claims |
1. A method of controlling automated fracturing operations in a wellbore, the method comprising:
automatically detecting a ball-seat event, wherein the automatically detecting includes:
determining a volume ratio is in a predetermined range and within a minimum and maximum bound, wherein the volume ratio is a ratio of a volume of a fracturing fluid pumped into the wellbore from a time a ball is introduced into the wellbore to a predetermined volume of the wellbore;
then determining a slurry rate is in a predetermined range and is within a minimum and maximum bound;
then determining a slope of a slurry rate is in a predetermined range and within a minimum and maximum bound; and
then determining a slope of a pressure change of the fracturing fluid in the wellbore is in a predetermined range and within a minimum and maximum bound; and
automatically fracturing a formation at a next treatment zone once the ball-seat event has been automatically detected.
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