US 12,421,830 B1
Methods and systems to stimulate rock surrounding a wellbore using ultrasound at a preferred frequency
Chao Liu, Brookshire, TX (US); and Murtadha J. AlTammar, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by ARAMCO SERVICES COMPANY, Houston, TX (US)
Filed on Apr. 30, 2024, as Appl. No. 18/651,581.
Int. Cl. E21B 43/00 (2006.01); E21B 28/00 (2006.01)
CPC E21B 43/003 (2013.01) [E21B 28/00 (2013.01); E21B 2200/20 (2020.05)] 18 Claims
OG exemplary drawing
 
1. A method, comprising:
obtaining, using a rock characterization system, a plurality of characteristics for a rock penetrated by a wellbore;
determining, using a model of poroelasticity and the plurality of characteristics, a preferred ultrasonic frequency at which to insonify the rock;
deploying an ultrasonic stimulation tool in the wellbore, wherein the ultrasonic stimulation tool comprises at least one ultrasonic transducer; and
activating the ultrasonic stimulation tool at the preferred ultrasonic frequency,
wherein the preferred ultrasonic frequency is based, at least in part, on maximizing a peak pore pressure at a distance beyond a wall of the wellbore.