1. the spiral of strands in a wire rope either to the right or to the left, as viewed from above.
2. A term used to measure wire rope, signifying the linear distance a wire strand covers in one complete rotation around the rope.
a systematic recording of data, such as a driller’s log, mud log, electrical well log, or radioactivity log. Many different logs are run in wells to discern various characteristics of downhole formation to record data.