Going through this tutorial provided by KAPPA, you will be guided step by step to learn how to use the main features of Saphir v.5.60 to perform a Pressure Transient Analysis (PTA): creating a new document, loading the data, extracting the data interval and generating the necessary plots, the use of the document tabs, tool strips and additional options, the use of the analysis tools, the generation of an analytical model and how to Improve it, how to build a numerical model, the creation of a Sensitivity plots.
What Is Pressure Transient Analysis?
Pressure Transient Analysis (or PTA) is, in most cases, about analyzing high frequency, high resolution shut-in data. The data are captured during dedicated well test operations such as DSTs or production tests or during routine productivity index (PI) tests. The pressure response from these shut-ins can be used to provide information about the reservoir within the radius of investigation for radial flow or the area of investigation for more complex geometries. The diagnostic plot of choice is the loglog plot where the pressure and the Bourdet derivative allow the identification of reservoir geometry and properties, these are then matched with models.
Saphir (KAPPA Workstation)
Saphir is the industry standard PTA software, used by nearly all major IOC’s, NOC’s, Independents and Service Companies. Its simple user interface and workflow allows for fast training and self-learning for occasional users. For the advanced user, it offers a unique combination of analysis tools, analytical models and numerical models which can connect to other dynamic data application such as Topaze for Rate Transient Analysis and Rubis for fullfield history matching.