With User Programming, you can generate and execute custom well log interpretation routines. There are separate modules for writing user programs and for running the programs. The user adds custom interpretation models to PowerLog® using VB.Net. Once "compiled", the program behaves like other PowerLog programs, with saved screens, notify, Batch Processing and other functions.

User programs can access blocks of data, making it easy to do complicated calculations and adjustments. These programs can also access array data from the PowerLog database. Any changes made by a user program are communicated through the notify function, ensuring that all viewers and processors have and display the latest data.

"With its user programming, data editing, multi-well interpretation and batch processing capabilities considered, PowerLog is perhaps the best value-for-the-dollar of any formation evaluation software product on the market today."—Paul Connolly, Chief Petrophysicist, EOG Resources Houston