General Drilling Guidelines
The general guidelines for drilling given below should be followed along with hole specific requirements:

- The ID of all downhole equipment shall be checked for free passage of a free point indicator tool and survey instrument fishing tools.

- Jars shall be run when required.

- Consideration shall be given to running a junk sub in conditioning assemblies that are run prior to a PDC drill bits or corehead assembly run.
https://www.drillingmanual.com/general-drilling-guidelines/