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2. Pipe recovery operations - Wikipedia

   en.wikipedia.org/wiki/Pipe_recovery_operations

   Key seating occurs when the drill string becomes off-centered in the wellbore, and the pipe collars become caught on a deviation in the wellbore. If the rig is able to move the drill string freely downhole, but every time the drill string is pulled upward it becomes stuck at the same point, then it is likely that the pipe is caught in a key seat.

3. Bottom hole assembly - Wikipedia

   en.wikipedia.org/wiki/Bottom_hole_assembly

   Rotary assemblies [2] are commonly used where formations are predictable and the rig economics are an issue. In such an assembly the weight of the drill collars gives the BHA the tendency to sag or flex to the low side of the hole, collar stiffness length and stabiliser diameter and placement are engineered as a means of controlling the flex of the BHA.

4. Elevators (drilling rig) - Wikipedia

   en.wikipedia.org/wiki/Elevators_(drilling_rig)

   Elevators, as developed for the drilling industry, are a hinged device with handles that are used to wrap around the tool joint of drill pipe, casing or lift nipples (for collars) to facilitate the lifting or lowering of them singly or of the drill string as a whole.

5. List of components of oil drilling rigs - Wikipedia

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

   Drill bit (#26) is a device attached to the end of the drill string that breaks apart the rock being drilled. It contains jets through which the drilling fluid exits. Drill floor (#21) is the area on the rig where the tools are located to make the connections of the drill pipe, bottom hole assembly, tools and bit. It is considered the main area ...

6. Horse harness - Wikipedia

   en.wikipedia.org/wiki/Horse_harness

   A collar is the part which a horse pushes against with its shoulders and chest. The two main designs are the breast collar harness and the full collar harness. A horse collar (or full collar) is a padded loop fitting closely around the horse's neck and resting on its shoulders. Must be correctly sized for each individual horse.

7. Bitting rig - Wikipedia

   en.wikipedia.org/wiki/Bitting_rig

   Both a bitting rig and a classic surcingle with side reins are intended only to be used while longeing a horse. They are not to be used on a horse that is standing in a stall (though this is a very common type of misuse), nor are they used while riding. However, the surcingle and side reins are used as safety tools in the sport of equestrian ...

8. Head of key Japan opposition party admits to extra-marital affair

   www.aol.com/news/head-key-japan-opposition-party...

   Get some last-minute shopping done at the Kate Spade Outlet sale — up to 70% off plus an extra 25% off select gifts. AOL. The 20 best gifts to give someone you don't know very well. AOL.

9. Twitch (device) - Wikipedia

   en.wikipedia.org/wiki/Twitch_(device)

   Simple horse twitch. A twitch is a device that is used to restrain horses during various stressful situations, such as veterinary treatment. [1] It is usually made up of a stick-like handle loop of chain or rope on the end, or a metal ring with a rope loop which is wrapped around the upper lip of the horse and tightened.