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2. List of components of oil drilling rigs - Wikipedia

   en.wikipedia.org/wiki/List_of_components_of_oil...

   Suction line (#3) is an intake line for the mud pump to draw drilling fluid from the mud tanks. Swivel (#18) is the top end of the kelly that allows the rotation of the drill string without twisting the block. Traveling block (#11) is the moving end of the block and tackle. Together, they give a significant mechanical advantage for lifting.

3. Traveling block - Wikipedia

   en.wikipedia.org/wiki/Traveling_block

   A traveling block is the freely moving section of a block and tackle that contains a set of pulleys or sheaves through which the drill line (wire rope) is threaded or reeved and is opposite (and under) the crown block (the stationary section).

4. Drawworks - Wikipedia

   en.wikipedia.org/wiki/Drawworks

   A drawworks is the primary hoisting machinery component of a rotary drilling rig.Its main function is to provide a means of raising and lowering the traveling block.The wire-rope drill line winds on the drawworks drum and over the crown block to the traveling block, allowing the drill string to be moved up and down as the drum turns.

5. Crown block - Wikipedia

   en.wikipedia.org/wiki/Crown_block

   Crown block. A crown block is the stationary section of a block and tackle that contains a set of pulleys or sheaves through which the drill line (wire rope) is threaded or reeved and is opposite and above the traveling block. [1] [2]

6. Drill line - Wikipedia

   en.wikipedia.org/wiki/Drill_line

   In a drilling rig, the drill line is a multi-thread, twisted wire rope that is threaded or reeved through in typically 6 to 12 parts between the traveling block and crown block to facilitate the lowering and lifting of the drill string into and out of the wellbore. On larger diameter lines, traveling block loads of over a million pounds are ...

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   mail.aol.com

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8. Pilot hole - Wikipedia

   en.wikipedia.org/wiki/Pilot_hole

   The pilot drill may be a standard twist drill, another type of drill bit appropriate for the material, or, when the primary purpose is precisely locating a hole, may be made with a short, stiff center drill. The pilot hole also reduces the power needed to turn a large drill bit, and reduces the large bit breakage risk.

9. Biden blocks new mining in region that produces about ... - AOL

   www.aol.com/news/biden-blocks-mining-region...

   The decision will block any new federal mining leases in Wyoming's Powder River Basin, the country's largest coal producing region, by 2041. This region produces about 40% of the nation's coal.