Application of Comprehensive Optimisation Strategy for Waterflooding Development Using Horizontal Wells in Thin Carbonates

Carbonate reservoirs in Middle East are strong heterogeneous with great reservoir physical property difference vertically, water breakthrough easily caused by high permeability streaks and some dissolution vugs when the reservoirs start water injection. How to successfully implement horizontal well waterflooding with high well productivity and long plateau period for complex carbonate reservoirs face great challenges. K reservoir of B oilfield, as a case study in the paper, has been put into production by horizontal wells and subsequently revealed production problems of unbalance of injection and production, rapid water breakthrough and production decline in the early stage of water injection.