Published by the DTI Oil & Gas Directorate for the reservoir engineering and IOR community in the UK.
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Well Test Analysis in Gas-Condensate Reservoirs

Contact: Prof. A. C. Gringarten (a.gringarten@ic.ac.uk)

Gas condensate reservoirs exhibit a complex behaviour due to the existence of a two fluid system, reservoir gas and liquid condensate. Liquid dropout which occurs when a well bottomhole pressure falls below the dew point often creates a non-reversible reduction in well productivity, which must be anticipated when developing a gas condensate field. One useful tool to understand (and then possibly predict) such a productivity reduction is well testing. Methods for analysing tests in gas condensate reservoirs, however, are not fully established, due to the lack of systematic studies of well tests in such reservoirs.

The objective of this proposal is to develop a better understanding, both qualitatively and quantitatively, of near-wellbore effects in gas condensate reservoirs from well testing, and to use this understanding to develop new methods for predicting well productivity in such reservoirs.

Funding - The work will be performed by PhD and MSc students from the Centre for Petroleum Studies at Imperial College, with input and guidance from industry partners. The three year project has a total cost estimated at £503,000 and requires funding from seven industrial partners at £25,000 per year for three years.

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