Applied Petroleum Reservoir Engineering Third Edition makes use of Microsoft Excel, with the optional Visual Basic Applications, to solve the problems throughout the text. These excel files are available here as reference tools for your use. The principles taught in Applied Petroleum Reservoir Engineering conclude with a history matching problem, Example 12.2. This problem makes use of the Visual Basic Applications which must be enabled in Microsoft Excel for the spreadsheet to calculate. These tools can save hours of time as you work to solve the homework problems in the book.