Black Oil PVT

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From discovery to abandonment, reservoir fluid characterization plays a critical role in optimizing each stage of a well's lifecycle. 

Weatherford Laboratories PVT analysis techniques uncover a wealth of knowledge about the fluids in the reservoir and guide decisions on the best production scenarios for the long-term viability of the well. 


In-depth fluid analysis for the life of the field

Weatherford Laboratories black oil analysis techniques include:

  • Detailed compositional analysis of reservoir fluid

  • Constant composition expansion (CCE)

  • Differential liberation (DL) with:

  • Pressurized viscosity, densities, and formation volume factors at each stage of depletion

  • Oil properties and gas-phase properties at each stage of depletion

  • Separator tests

  • Viscosity of reservoir fluid in both single-phase and 2-phase regions at reservoir temperature

  • Saturates, aromatic, resins, and asphaltenes (SARA) by high performance liquid chromatography

  • Equation of state modeling

Weatherford Laboratories has facilities to perform comprehensive analysis on all reservoir types from very low API heavy oils to conventional oils, volatile oil, gas condensate, and dry gas. Isolation labs are available for the safest handling of all H2S and acid gas systems.

Weatherford Laboratories' comprehensive reservoir fluid analysis techniques establish the physical and chemical properties of field fluids that help form the foundation for efficient field development planning. Understanding critical features such as hydrocarbon type; fluid volumes; flow characteristics; and the pressure, volume, temperature (PVT) behavior of the reserves in place is crucial for estimating the recovery potential of reserves and the type of hydrocarbons that will be produced.

Reservoir Fluid Analysis

While accurate fluid characterization guides the design and optimization of downhole production strategies and the operation of surface facilities, inaccurate analysis creates a high degree of uncertainty regarding in-place-volume estimates and recovery predictions. As a result, the asset's true value and the operator's profit potential may go unrealized. 


The key data obtained from PVT reports include an understanding of fluid composition, density, viscosity, and compressibility; gas in solution; saturation pressure (bubble point and dew point); and flow assurance properties, to name a few.