Gas Condensate Reservoirs Training

1. Phase behaviour:

Equations of state; fluid sampling and laboratory PVT tests (CCE, CVD tests, two-phase z-factor, K equilibrium constant and molar balance consistency checks); Equation of state modelling (Ideal and Real gas law (two and three-parameters corresponding state), two and three parameters van der Waals Cubic EOS (Pen-Robinson, Schmidt-Wenzel, Patel-Teja and Soave-Redlich-Kwong) for pure and mixtures, prediction of phase behaviours and reservoir fluid properties; Tuning of EOS using experimental data and field application of fluid data in commercial simulators; a comparison of black oil and compositional models

2. Condensate issues:

Condensate formation and growth; critical condensate saturation, gravity drainage, residual trapped gas and condensate; condensate banking; and well remedial

3. Reservoir Flow:

Relative permeability measurement methods; single and two phase inertial factor estimation methods; waterflood; relative permeability variations with velocity & interfacial tension due to coupling (capillary number) and inertial effects; mechanistic models of coupling; relative permeability correlations and calculations for use in simulators and using the next generation (universal) method.

4. Estimating volumes and production mechanisms:

Material balance equations (gas in-place, calculations drive mechanism identification); high pressure and high temperature reservoirs, depletion for dry, wet and gas condensate systems; active aquifers and pressure maintenance (including gas injection).

5. Well issues:

Steady state and pseudo-steady state flow equations; well productivity calculations; perforation and fracture characteristics and effective parameters; perforation and fracture design; estimation of skin for perforated, fractured, deviated and horizontal wells.