What is a well logging device that is used to measure the angle between beds and the horizontal plane within a well?

What is a well logging device that is used to measure the angle between beds and the horizontal plane within a well?

• A. Gamma Ray
• B. Dipmeter
• C. Caliper
• D. Neutron Porosity

Answer: (C)

Bed dip is determined with a tool that can sense bedding orientation around the borehole as the tool interacts with the surrounding rock. That tool is the dipmeter. It has multiple sensors arranged around the tool, and as it is lowered and rotated, the responses from those sensors reveal how the beds tilt and in what direction. From this pattern you can extract the dip angle (the angle between the beds and the horizontal) and the azimuth of the tilt. Other tools mentioned have different purposes: gamma ray logs identify rock types by natural gamma radiation, a caliper measures borehole diameter, and neutron porosity tools estimate porosity. Therefore, the instrument specifically designed to measure bed orientation and dip is the dipmeter.

Bed dip is determined with a tool that can sense bedding orientation around the borehole as the tool interacts with the surrounding rock. That tool is the dipmeter. It has multiple sensors arranged around the tool, and as it is lowered and rotated, the responses from those sensors reveal how the beds tilt and in what direction. From this pattern you can extract the dip angle (the angle between the beds and the horizontal) and the azimuth of the tilt.

Other tools mentioned have different purposes: gamma ray logs identify rock types by natural gamma radiation, a caliper measures borehole diameter, and neutron porosity tools estimate porosity. Therefore, the instrument specifically designed to measure bed orientation and dip is the dipmeter.