Case Studies

Pressure Sink Mitigation

Subsurface Dynamics is an independent engineering and geoscience consulting firm with extensive experience in reservoir characterization, modeling and simulation.  We provide a full spectrum of engineering and geophysical services from data acquisition to final data integration and full field development programs.

"Subsurface Dynamics was tasked with determining the optimal Pressure Sink Mitigation (PSM) strategy and its impact on fracture growth in a depleted reservoir."

Project Summary

Subsurface Dynamics was tasked with determining the optimal Pressure Sink Mitigation (PSM) strategy and its impact on fracture growth in a depleted reservoir. 

CLIENT: UNDISCLOSED

FORMATION: MONTNEY, ALBERTA

Scope of Work

Using proprietary data from the Client, Subsurface Dynamics history matched production from existing wells to create a pressure-depleted grid. Fracture modeling was then performed on the depleted grid for a pair of infill child wells. SSD then investigated the impact re-pressurizing the parent wells would have on child well fracture growth. Scenario’s tested included defensive frac injection, re-frac of the parent wells, and preloading parent wells with varying injection volumes. 

Result

  • PSM protected parent wells from detrimental frac hits.

  • PSM allowed fracs to have more growth into virgin reservoir as less energy was lost to the depleted zones.

  • Frac height growth and the propped area were significantly improved by up to 25%.

  • Resulting production from child wells increased by 10%.