One of the Subsurface E&P Disciplines, related to long-term analysis of production/injection history and its correlation with bottom-hole pressure measurements and/or formation pressure from well tests.

The key objectives of PAProduction Analysis is to predict understand the historical flowrate dynamics (and its components (components water cut Y_w and gas-oil-ratio GOR)  ) in the context of Well-Reservoir System (WRS) and predict its future dynamics in response to other dynamic variables.

Unlike well tests Well Tests which normally last for few hours or few weeks, PA Production Analysis usually covers a time period from few months to many years.

Some properties of Well-Reservoir System (WRS) can be assessed through both Production Analysis or Well Tests (for example, Productivity Index and drainage volume ) and some other properties are specific to either Production Analysis (for example, Watercut Diagnostics  ) or Well Tests (for example, skin-factor).

Production Analysis is usually split into the PA is split into following categories by objectives:

and into three categories by the mathematical methodology:

and into following categories by the available of inputs:

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See also

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Petroleum Industry / Upstream /  Production / Subsurface Production / Field Study & Modelling

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[ Recovery Factor (RF) ] [ Depletion Factor (DF) ] [ Watercut Diagnostics ] [ GOR Diagnostics ]

[ Instantaneous Voidage Replacement Ratio (IVRR) ] [ Cumulative Voidage Replacement Ratio (CVRR)  ] [ Voidage Replacement Balance (VRB) ]

[  Pressure Deconvolution ][ Capacitance Resistance Model (CRM) ] [ Pressure-Rate artificial neural network (PRANN) ]

References

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