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The planned inclination of the tangent section of a directional well. In a horizontal well if would be 90 deg ( /- 10 deg), in a build and hold or S well it would be the tangent section, in a slant well it would be the inclination throughout.
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Generally used in describing a surface or subsurface safety valve.
The line from the derrickman's platform to the ground, used in an emergency. Also called a Geronimo line.
A section in a downhole tool string than can be actuated by ball or pressure to allow recovery of the pipe string if the tool is stuck.
A joint above a piece of equipment that is designed to fail and allow recovery of the upper string.
The derating factor applied to a pressure test limit or weight limit to set a maximum operating load condition.
Also any clamp for securing pipe above the rotary table, even when the slips are set.