Wellsite Geological Operations provides an overview of the role of the geologist at the wellsite during drilling operations. The course is structured in two modules that run consecutively. The first is based on the Introduction to Drilling course and is recommended for Operator company staff geologists who may be assigned to act as Wellsite Geologist but have not yet gained any wellsite experience. This part of the course is unnecessary for mud loggers or other persons with drilling experience who are transiting to the Wellsite Geologist role. Persons in this category would join the course for the second module that runs on days 3 and 4 of the course.