CPC E21B 43/2607 (2020.05) [E21B 21/06 (2013.01); E21B 43/26 (2013.01); E21B 43/267 (2013.01); E21B 47/07 (2020.05)] | 19 Claims |
1. A method of fracturing a subterranean rock formation traversed by a wellbore, comprising:
injecting a cooling fluid into a near-wellbore zone to cool the near-wellbore zone and thereby reduce fracture initiation pressure;
subsequent to injecting the cooling fluid, injecting a frac fluid into the near-wellbore zone to initiate hydraulic fracture in the near-wellbore zone; and
while injecting the cooling fluid into the near-wellbore zone, measuring a volume of the cooling fluid that is pumped into the wellbore and into the near-wellbore zone; and
stopping the injecting of the cooling fluid into the near-wellbore zone when the measured volume matches a target volume.
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