Geophysical logging involves taking measurements inside boreholes or wells in order to gather information about the makeup of the soil underneath the earth’s surface. This is particularly useful for gathering information to use in oil and natural gas drilling operations. There is a lot of data that is logged and analyzed in order to better understand the makeup of the subsurface. Here are a few different types of geophysical logging that may be used:
Caliper logs: These record basic physical measurements of the borehole, such as the diameter.
Gamma logs: These measure the gamma radiation that the rocks within the borehole emit. Materials that often emit high levels of gamma radiation include clay and shale.
Resistivity logs: These measure the resistivity of electrical currents of the water and rocks in the borehole in order to detect anomalies.
Temperature logs: These record the temperature of the water located in the borehole.
Acoustic televiewer logs: These logs use acoustic reflection in order to produce an image of the borehole. It can usually detect fractures in the stone of the borehole. However, this type of logging is usually limited to wells filled with mud or water.
Geophysical logging involves data collection through a variety of logs, such as those listed above. By putting all of the information together, a lot can be learned about the subsurface of a given area. Make sure to have professionals on hand to help organize, analyze, and interpret the data you gather from all of your logs. Call 480-926-4558 today to learn more about the different types of geophysical logging or for information about the geophysical logging services available at Southwest Exploration.