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Pressure-Volume-Temperature Property Determination for Fluids at Extreme Pressures
Yue Wu, Leyuan Xu, Hao Zhang, Xiaomei Zeng, and Jiangmin Chen.
Virginia Commonwealth University
Department of Biomedical Engineering, Department of Mechanical and Nuclear Engineering, Virginia Commonwealth University, Richmond, Virginia. USA
Pressure-volume-temperature (PVT) properties, more commonly known as density data play an important role in various chemical processes and provide a fundamental database for the development and examination of thermodynamic models. For example, ultradeep oil exploration process requires density data at extreme pressure conditions, which are crucial for the design and optimization of drilling and production equipment. This review discusses the current techniques for high-pressure determination. Three most common techniques, vibrating-body, bellows, and floating-piston, are described in detail with presentation of some typical results and advantages and drawbacks are discussed for each method. Other techniques are also briefly introduced at the end of this review.

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