Re: Reservoir pressure buildup Calculations and Interpretati
A pressure build up test is a test generally carried out on a producing wells. Wells that are still producing are shut in for a period of time to allow a pressure build up. During the process, down hole gauges are placed very close to the wellbore at different intervals to measure the reservoir response. At the end of the test, the guages are remove from the hole, downloaded and the data are retrieved and then analyse, using any of the available software, e.g. Saphire, Fekete or Pansys.
The analyse data is used to determine some reservoir parameters, such as Skin (which determines the extent of damage done to the reservoir). Other parameters are reservoir pressure, productivity index, drainage volume, drainage boundary etc. However, before you understand how to analyse, you need to understand the basic principle of well test. Your ability to recognise the flow regime is very important as it forms part of the basis to characterize your reservoir.