In the oil field, when a vertical cylinder coring sample is taken, how is the core severed at the bottom and removed from the formation?

Question

I would like to know how the core is cut off at the bottom of the drill. I also would like to know how the core is brought up to the surface without slipping out and falling back down.

Answer 1

Core barrels positioned above the drill bit, capture the core as its cut. These may include may have latches, liners or spring loaded devices to stabilize the core during removal.