8.4 How to Log a Drill Hole

Before newcomers begin logging subsurface information, it is helpful to be familiar with the different drilling methodologies described above and the section on rig safety before attempting to log your first hole. You need to know how the cuttings arrive at the surface and the objectives of the drilling project. In addition to logging a hole, you are also responsible to see that the drilling project is completed. There needs to a balance between making good footage for the driller and also obtaining the needed subsurface information. The hydrogeologist is responsible for the data that are collected.

It is typically your responsibility to locate where to drill. How will you decide? Will the locations be premarked? Were they located by someone else, which means that you have to be able to read a map and locate yourself? Do you know where the site is and where to begin? Is it necessary to call a utility line locator? Remember that you need 48 hours advanced notice (Section 8.2). Are there any issues regarding personal protective clothing? These may sound like obvious questions, but for someone new they are a significant source of stress and point out the need for a predrilling meeting with the driller and other involved parties.

In addition to knowing the drill-site locations (or enough sites to get started), there are a number of tasks that one can prepare before going into the field. Does your company have a standard...