Determining static reservoir connectivity using noble gases

Determining the connectivity of fluids in hydrocarbon reservoirs is a key challenge during appraisal stage. Such information critical for assessing economic viability and planning reservoir development. Although several tools exist to determine static fluid column organisation post-hydrocarbon emplacement, it extremely difficult extent between different phases. Conventional studies on Tormore field, West Shetland Basin, UK have resolved vertical one well (T2) but been unable resolve further or lateral connectivity. Here, we outline new tool by completing first intra-field study noble gas composition (He, Ne, Ar, Kr Xe) from individual units, allowing resolution both within field. To achieve this, obtain samples archived PVT vessels rather than wellhead platform separators, sampling units encountered drilling. Our findings corroborate previous undertaken oil well, T2, confirming that unit T2-A isolated lower units. We apply same method T3, finding T3-A In addition, identify previously unknown connection phase separated poorly constrained fault. These confirm effectiveness using fingerprints assess phases, providing understanding non-hydrocarbon settings (e.g. Carbon, Capture Storage). • Outlines methodology analysis cells Provides collected directly Demonstrates application gases resolving Resolved two phases fault