Heading (Logging) in Drilling & Well Completion

Heading is not a standard term used in drilling and well completion logging. It's possible you are referring to a specific logging tool or technique that you've come across, but without more context, it's difficult to give a precise answer.

To help me understand your question better, please provide more details:

• What is the context of this term? Where did you encounter "Heading" in relation to drilling or well completion logging?
• What kind of logging are you interested in? Are you referring to wireline logging, LWD (Logging While Drilling), or a specific type of logging like resistivity, sonic, or density logging?
• Can you provide any additional information about the term "Heading"? Is it a specific tool name, a measurement unit, or a technique?

Here are some possibilities for what you might be looking for:

• Heading as a directional term: It could refer to the direction of drilling, which is typically measured in terms of azimuth and inclination.
• Heading as a measurement: It might be a synonym for "heading" in the sense of "direction," measuring the direction of a magnetic field, for example.
• Heading as a tool name: It is possible that "Heading" is a brand name or slang for a specific logging tool.

Once you provide more context, I can give you a more accurate and helpful answer.