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6 FAQs about [Down-the-hole drilling rig wire pulling video tutorial]
Can you drill a hole in a cable tool rig?
The vast majority of time an operator runs a cable-tool rig, they either make a hole or drive casing into the ground. On occasion though, the operator needs to remove or pull casing from the ground. Three instances that come to mind include: And, heaven forbid, drilling a dry hole.
How does a cable tool rig work?
(Some cable-tool rigs have only drilling and sand reels, so this method won’t work with them.) The driller simply grabs the casing with an elevator, which I wrote about last time, a chain or even a sling made of steel cable. This method depends on the formations drilled through. If these formations consist of clay, pulling by casing reel works.
What is a DTH drill rig?
A down-the-hole drill, usually called DTH Drilling Rig, is basically a mini jackhammer screwed on the bottom of a drill string. The speedy hammer activity breaks hard stone into little flakes and dust and can be dismissed evident by the air exhaust in the DTH hammer.
How do rigs pull pipe?
Some rigs have an adjustment in the character of the stroke so that, when pulling pipe, the tools have a fast upstroke and a slow downstroke — just the opposite of the drilling motion. This pulling head gives you a cheap and easy way to bump pipe out of the ground, but has more effectiveness in not-so-severe pulls.
What is down-the-hole (DTH) drilling?
Down-the-hole (DTH) drilling has made it easier for contractors to drill wells faster and more efficiently, and to transition from dirt boring to rock boring just by adding a compressor and hammer to the drill bit.
Can you use a casing reel on a cable tool rig?
In situations where casing remains close to the surface, say 50 or 60 feet, operators can simply use a casing reel if the rig has one. (Some cable-tool rigs have only drilling and sand reels, so this method won’t work with them.)


