Wellbore stability is a delicate balance between rock strength, stress, and fluid pressure. A single oversight in modeling, mud design, or real-time monitoring can trigger collapse, stuck pipe, or loss of the well. This talk highlights key failure mechanisms, lessons from the field, and practical strategies to ensure stability and protect well integrity from start to finish.
MPD was first used to drill challenging wells successfully, achieving results unattainable with conventional methods. Today, MPD enhances all well operations—tripping, casing, cementing, logging—improving efficiency, safety, and reducing NPT. This webinar shows how closed-loop MPD delivers unmatched performance in all wells, not only challenging ones.
La reducción de presión e inyecciones en yacimientos generan deformaciones que pueden causar compactación, subsidencia y cambios en el estado de esfuerzos, afectando la integridad de pozos y provocando sismicidad inducida. Esta presentación muestra cómo modelos geomecánicos 3D usando el Método de Elementos Finitos ayudan a mitigar estos riesgos y optimizar la seguridad y eficiencia en producción.
Development of carbonate reservoirs with natural fractures or karst comes with unique challenges due to the extreme permeabilities introduced by such features. Traditional reservoir characterization and permeability predictions often get challenged as soon as dynamic data becomes available. Here we will demonstrate how early dynamic data integration can help reduce uncertainty and refine geologic concepts in fractured and karst reservoirs.
In this study we demonstrate that relying solely on mud weight (MW) for borehole stability is inadequate. The water phase salinity (WPS), often not considered, plays a crucial role. Inappropriate salinity levels caused instability despite sufficient MW, whereas the correct combination of MW and WPS maintained stability. A geomechanical model that includes chemical effects, even without direct shale samples, accurately predicted the optimal MW and WPS combinations, enhancing drilling efficiency.