Randomized trial evaluates differentiated strategies for controlling fluid damage in multilayer carbonate reservoirs, highlighting effective outcomes.
Key Points
This research aims to identify the damage mechanisms caused by drill-in fluids in multilayered carbonate reservoirs and propose effective management strategies.
Integrates laboratory experiments, microstructural characterization, and field analysis.
Investigates fluid sensitivity, permeability damage, and fracture characteristics.
Proposes differentiated formation damage control strategies based on predicted invasion depths and fluid interactions.
Permeability damage reached 59.18%, with a stress sensitivity coefficient of 0.71.
Acid-soluble plugging agents sealed fractures up to 2000 μm, increasing pressure-bearing capacity by 40%.
Field validation resulted in a 67.27% reduction in fluid loss and 9.67% increased initial productivity.