This paper addresses the challenge of adjusting late-stage production in waterflooded reservoirs and proposes an integrated well-network-design mode for CO2 enhanced oil recovery (EOR) and storage. The well network is designed according to the full life cycle of carbon capture, use, and storage (CCUS), meeting the requirements of both CO2 EOR and storage phases.
Overview of Geological Development of L Reservoir
The L reservoir structure is in a zone consisting of a series of long-axis anticlines trending nearly east/west. The structure includes multiple development blocks on the plane, is intact overall, and has good sealing conditions.
The L oil reservoir is divided vertically into two sublayers, L-1 and L-2. Based on the statistical analysis of core-sampling experimental data, the L-1 sublayer has an average porosity of 16.2% and a permeability of 39.3 md, classifying it as a medium-porosity, low-permeability reservoir. The L-2 sublayer has an average porosity of 19.5% and a permeability of 193.4 md, classifying it as a medium-porosity, medium-permeability reservoir.
