Perpendicular or 90 degrees to level (horizontal level)... In other words, straight up and down.
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The slope is the ratio of rise over the run. The rise is the change in the vertical distance.The run is the change in the horizontal distance.So the slope is the ratio of two changes, horizontal divided by vertical.
Giving an employee extra tasks and more responsibility usually held by upper level positions in order to develop their skill.
What is the scale vertical axis
In perfectly vertical wells, the TVD equals the MD; otherwise, the TVD is less than the MD measured from the same datum. Common datums used are ground level (GL), drilling rig floor (DF), rotary table (RT), kelly bushing (KB) and mean sea level (MSL).