Well, production and reservoir testing is a set of testing to measure various well performances (wellhead and bottomhole pressure, temperature and their distribution along the length of the borehole, liquid level, rate and others) and recording their changes over time in flowing or inactive wells, sampling of reservoir fluid (oil, water, gas, gas condensate).
The main methods of measuring and recording are described below:
The obtained results are used to choose the optimal inflow performance and to monitor equipment operation with subsequent PTA. This analysis in its turn allows estimating productivity of reservoirs and wells (reservoir pressure, productivity or flow coefficients, water cut, gas/oil ratio, hydroconductivity, permeability, piezo conductivity, skin factor and so on), as well as identifying characteristics of skin zone and drainage areas.
This testing is a direct method to estimate filtration characteristics of rocks under occurrence conditions, reservoir saturation behavior (gas, oil, water) and physical properties of reservoir fluids (density, viscosity, volume factor, compressibility, bubble point pressure etc.)
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