EOS Modeling

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To truly have an impact on field operations, reservoir fluid analysis cannot stop at merely the data generation step in the lab. A complete fluid characterization must also include numerical characterization to help you understand the data, guide your production optimization, and further your development decisions.

Weatherford Laboratories develops equation of state (EOS) models that use the fluid properties obtained in the lab to accurately gauge how the reservoir fluids will respond to changes in pressure, temperature, and composition. Our EOS models are constantly updated with new field data—gas and oil compositional analysis, CCE, DL, and CVD—and regressions are performed to improve the accuracy and detail of reservoir simulations.


Deliverables: black oil table and input files for reservoir simulation software widely used in the industry.

Accurate measurement and EOS modeling of fluid composition and properties are the first two necessary steps towards a successful modeling of the effect of condensate blockage in reservoir simulators. They are also vital in predicting the performances of any gas injection projects.

Weatherford Laboratories’ full-service fluid analysis combines the industry’s latest state-of-the-art laboratory characterization tools with sophisticated numerical characterization with EOS. We can work with the pressure-volume-temperature (PVT) phase behavior software available in the current market. In addition, we have in-house PVT software.

Our staff of highly qualified reservoir engineering experts works with each client to custom design a fluid analysis protocol that meets the specific development planning and production optimization goals of a particular asset. While the details of each analysis protocol are specific to a particular field, each follows the same general road map to reservoir understanding.


Weatherford Laboratories is one of the few service providers that offers this level of EOS modeling, and we have worked with clients around the world to optimize their reservoir simulations for estimating reserves recovery.