Geomechanical effects of shale acidization

Nicolas Espinoza

Advanced completion methods seek to maximize the stimulated reservoir volume as a result of hydraulic fracturing. Shale acidization has been proposed as one method to improve drainage efficiency.

This project studies the influence on the state of stresses post-fracturing induced by changes in fluid pore-pressure and mineral chemical dissolution. The change of stresses affects permeability and can either increase or decrease production rates. The objective of this project is to determine the impact of acidization on the local state of stresses and ensuing fracture permeability changes.