The borehole gravity logging tool, used as a deep investigation density method that can image through casing, is enjoying a renaissance. Originally designed in the early 1970s, the tool suffered from hardware limitations, such as size, deviation, and speed, which now keeps it out of the majority of wells drilled. These artificial limitations can now be overcome with modern engineering and new electronic components technology that was unavailable a few years ago. New advances in gimbals and leveling move borehole gravimetry forward into the 21st century. The fundamental principles of borehole gravity remain a sound and valuable technology for all phases in the life of an oil field. Numerous examples and case studies can be cited which attest to borehole gravity's value in exploration, formation evaluation, reservoir monitoring, and missed pay opportunities.

You can access this article if you purchase or spend a download.