Simple, round steel bar designed to add weight for driving the drill bit.

Drilling jars connect to the socket and enable cable tool drillers to “jar” a stuck string loose.

Drilling vet and columnist John Schmitt discusses what to look for in wire rope for small, mid-size and larger spudder drill rigs.

Columnist John Schmitt continues his spudder rig short course with a look at their availability and greasing methods.

Columnist John Schmitt talks options for bigger cable-tool rigs, which often worked in oil and gas.