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2. Drill bit - Wikipedia

   en.wikipedia.org/wiki/Drill_bit

   While the above is a common use of center drill bits, it is a technically incorrect practice and should not be considered for production use. The correct tool to start a traditionally drilled hole (a hole drilled by a high-speed steel (HSS) twist drill bit) is a spotting drill bit (or a spot drill bit, as they are referenced in the U.S.). The ...

3. Screw extractor - Wikipedia

   en.wikipedia.org/wiki/Screw_extractor

   A screw extractor held in a tap wrench. A screw extractor is a tool for removing broken or seized screws.There are two types: one has a spiral flute structure, commonly called an easy out after the trademarked name EZ-Out; [clarification needed] the other has a straight flute structure.

4. Drill bit (well) - Wikipedia

   en.wikipedia.org/wiki/Drill_bit_(well)

   In the oil and gas industry, a drill bit is a tool designed to produce a generally cylindrical hole in the Earth’s crust by the rotary drilling method for the discovery and extraction of hydrocarbons such as crude oil and natural gas. This type of tool is alternately referred to as a rock bit, or simply a bit. The hole diameter produced by ...

5. Irwin Industrial Tools - Wikipedia

   en.wikipedia.org/wiki/Irwin_Industrial_Tools

   Previous logo. Irwin Industrial Tools is an American manufacturer and distributor of hand tools and power tool accessories. It is owned by Stanley Black & Decker.It is best known for producing Vise-Grip locking pliers.

6. Tripping (pipe) - Wikipedia

   en.wikipedia.org/wiki/Tripping_(pipe)

   The most typical reason for tripping pipe is to replace a worn-out drill bit. Though there are many problems that occur to warrant the tripping of pipe. Downhole tools such as MWD (measurement while drilling), LWD (logging while drilling) or mud motors break down quite often. Another common reason for tripping is to replace damaged drill pipe.

7. Extractor - Wikipedia

   en.wikipedia.org/wiki/Extractor

   Extractor may refer to: Extractor (firearms) Extractor (mathematics) Extractor (screws), a tool used to remove broken screws; Randomness extractor; Soxhlet extractor;