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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. Drill string - Wikipedia

   en.wikipedia.org/wiki/Drill_string

   Drill pipe makes up the majority of the drill string back up to the surface. Each drill pipe comprises a long tubular section with a specified outside diameter (e.g. 3 1/2 inch, 4 inch, 5 inch, 5 1/2 inch, 5 7/8 inch, 6 5/8 inch). At each end of the drill pipe, tubular larger-diameter portions called the tool joints are located.

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   Police said first responders had to free the driver of a BMW X1, a 32-year-old woman, after it crashed into the Yukon at a high rate of speed. ... The couple have three kids, a 10-year-old boy and ...

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   On Thursday, President Joe Biden signed an executive order designating Christmas Eve as a federal holiday for most employees.

8. Stand (drill pipe) - Wikipedia

   en.wikipedia.org/wiki/Stand_(drill_pipe)

   A stand (of drill pipe) is two or three joints of drill pipe connected and stood in the derrick vertically, usually while tripping pipe. A stand of collars is similar, only made up of collars and a collar head. The collar head is screwed into the collar to allow it to be picked up by the elevators.

9. Veterinarian’s Trick for Keeping Bored Dogs ... - AOL

   www.aol.com/veterinarian-trick-keeping-bored...

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