Integrating PVT, Stable Isotope and Biomarker Geochemistry and Pressure Data to Characterise the Continuity of a Geologically Complex Gas Condensate Reservoir

Abstract

Abstract Characterizing reservoir continuity is a critical part of the field appraisal and delineation process and it carries an inherent risk for all stakeholders as well as significant implications for field development planning. The risk becomes even more substantial when planning the development of a geologically complex marginal field. Uncertainty and risk analyses are carried out in order to assess the potential impact of various parameters including geological uncertainties. However, the efficacy of the uncertainty and risk analyses processes are dictated by the quality and quantity of the available data. Thorough and extensive data collection and analysis, incorporating channels such as insitu reservoir fluid sampling, reservoir fluid characterization, molecular geochemistry, stable isotope geochemistry as well as pressure data will improve the outcomes of the uncertainty and risk analyses while minimizing reservoir continuity mischaracterization risks.