GeoCos v2.0: An open source web application for calculating Chance of Success values of exploration wells

In hydrocarbon exploration, evaluation of a prospect’s success ratio relies on assessment of each petroleum system element and combination of it into a single risk factor. This makes estimation of chance of success values crucial to reduce the risks of exploration and to make robust investments for a particular region. To standardise this process, a couple of methods, both for global and basin-scale use, have been proposed in the last 20 years. All of them are table-based methods suggesting explorationists to pick the correct risk values according to the geological conditions they are encountering. However, examining the tables each time can be quite time-consuming. In addition, it can also cause subjective or biased picking of success values, resulting with under or overestimation of risk factors. To prevent repetition and miscalculations, GeoCos offers a web-based application by turning all table-based methods into interactive selection schemes. Users can choose geological conditions defined in table based methods and display the results. In addition, predictions of three table-based methods can be compared in spider or bar charts. Generated figures can be downloaded to implement them for publishment or presentations. There are direct links for the papers of the published methods as well.

Development phase is consisted of two processes as front-end and back-end. Front-end development is based on HTML-CSS-Vanilla Javascript-Plotly.JS while for the back-end Node.JS completes the server side. Open source nature of this practical tool makes it easy to contribute for further developments. Source codes are available at the GitHub repository; https://github.com/Ayberk-Uyanik/GeoCos-v2.0