Well logging is the practice of recording and analyzing various kinds of data about the rock formations around a borehole during or after drilling. Also called borehole logging, this activity aims to ...

Well logging chronicles the depths, subsurface formations and events encountered while drilling. Well logs can include visual observations or be made by instruments lowered into the well during ...

Forest Oil Corp., Denver, successfully completed openhole logging operations with drill pipe-conveyed memory logging tools to a depth of 20,203 ft MD in its Redoubt No. 4 delineation well in Alaska's ...