Karsts, fractures, and faults can significantly impact drilling operations and production performance in carbonate reservoirs. Accurately identifying these features in three dimensions is crucial for minimizing early water channeling and ensuring optimal production performance. The challenge lies in capturing a comprehensive 3D view of the water corridors within these complex geological structures to inform and optimize completion design.
Using MicroScope HD resistivity- and high-definition imaging-while-drilling service enabled detailed characterization of reservoir stratigraphy, subsurface facies architecture, and heterogeneity, particularly focusing on secondary porosity and fractures. By combining this technology with GeoSphere 360 3D reservoir mapping-while-drilling service, it was possible to create extremely detailed maps of the boundaries between different rock layers. This mapping revealed how karsts and networks of fractures connected to the underlying aquifer with unprecedented clarity. This technology made it possible to pinpoint and isolate specific intervals within the reservoir during the completion design phase to minimize water production.
Incorporating the GeoSphere 360 service facilitated the capture of comprehensive 3D water corridor data, significantly enhancing the operator's understanding of reservoir architecture and fluid dynamics. This 3D data enabled a more precise redesign of the completion strategy based on the actual mapped reservoir architecture and identified water zones. As a result of combining MicroScope HD and GeoSphere 360 services, the operator mitigated early water breakthrough while optimizing completion design and production performance.
