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2. Pipe recovery operations - Wikipedia

   en.wikipedia.org/wiki/Pipe_recovery_operations

   The Drill Collar Severing Tool is often used to separate heavy weight drill pipe or drill collars. The DCST contains an explosive charge at either end of the tool; both charges are detonated simultaneously. The explosive shock waves meet in the center of the tool and combine to produce a very high energy wave capable of cutting through the ...

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. Horse harness - Wikipedia

   en.wikipedia.org/wiki/Horse_harness

   A horse harness is a device that connects a horse to a horse-drawn vehicle or another type of load to pull. There are two main designs of horse harness: (1) the breast collar or breaststrap, and (2) the full collar or collar-and-hames. For pulling heavy loads, a full collar is required because it distributes pressure over a larger area of the ...

5. Drill pipe - Wikipedia

   en.wikipedia.org/wiki/Drill_pipe

   Drill pipe is most often considered premium class, which is 80% remaining body wall (RBW). After inspection determines that the RBW is below 80%, the pipe is considered to be Class 2 or "yellow band" pipe. Eventually the drill pipe will be graded as scrap and marked with a red band. Drill pipe is a portion of the overall drill string.

6. Breastplate (tack) - Wikipedia

   en.wikipedia.org/wiki/Breastplate_(tack)

   The breast collar harness is one of two main harness designs. The other design is the collar and hames design, also called a "full collar", which is required in order to pull very heavy loads because it distributes pressure over a larger area of the horse. One of the main advantages of using a breast collar style harness is that it fits on ...

7. Bears defensive end fined for obvious, unflagged horse-collar ...

   www.aol.com/bears-defensive-end-fined-obvious...

   But the NFL did fine Sweat $16,883 for a horse-collar tackle in the days after the game, an acknowledgement that an infraction had been committed. The penalty didn’t end up making much of an ...

8. Did officials miss a horse-collar tackle of Bills QB Josh ...

   www.aol.com/sports/did-officials-miss-horse...

   A horse-collar penalty would have set the Bills up with first down inside the Eagles' 2-yard line. The intentional grounding call instead put the Bills at third-and-goal at the Philadelphia 16.

9. NFL fines: Jalen Hurts docked $16K for horse-collar tackle ...

   www.aol.com/sports/nfl-fines-jalen-hurts-fined...

   The Philadelphia Eagles' signal caller will pay $16,391 for a horse-collar tackle he made during the team's Christmas Day victory over the New York Giants.