Borehole Drilling Method

piston core

http://resource.geosciml.org/classifier/cgi/boreholedrillingmethod/piston_core

notation 4.2.6 more like this
definition A drilling method that uses a piston to drive the core barrel. Produces high quality long cores. more like this
source This vocabulary more like this
type
Resource
Concept
broader direct push
narrower piston core
in scheme boreholedrillingmethod
is primary topic of piston core