US 11,808,124 B1
Automated ball-seat event detection
Dinesh Ananda Shetty, Houston, TX (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Jun. 28, 2022, as Appl. No. 17/851,263.
Int. Cl. E21B 34/14 (2006.01); E21B 43/26 (2006.01); E21B 21/08 (2006.01); E21B 43/14 (2006.01)
CPC E21B 43/26 (2013.01) [E21B 21/08 (2013.01); E21B 43/14 (2013.01)] 20 Claims
OG exemplary drawing
 
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.