Tech Talks

#21 Common EoS Modeling

The two first TechTalks in the series on Fluid Characterization dealt with characterization of single petroleum reservoir fluids. This TechTalk outlines How to make a common equation of state (EoS) model applicable for multiple fluids How to add a new fluid to an existing EoS model How to evaluate whether a series of plus fluid …

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#14 Modeling of CO2 Properties

Just 10 years ago, the oil industry primarily saw CO2 as a gas that could potentially be used to enhance the oil recovery through injection into oil reservoirs. CO2 is relatively miscible with heavy hydrocarbons and a miscible drive can develop at moderate reservoir pressures.  Today, much focus on CO2 has shifted to Carbon Capture Storage (CCS). It …

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#13 Density of Brine

Accurate correlations exist for the density of pure water. An example is the model of Keyes et al. [1], which is used in PVTsim Nova. Formation water produced together with gas and oil is not pure, but contains dissolved salts, and these salts can have a significant effect on the density. The importance of water …

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