Glossary
Kelly |
a square or hexagonal hollow shaft that engages at one end with the drilling table and at the other with the drill pipe. |
Kelly joint |
the stand of piping that carries the kelly |
Kerogen |
a bituminous material occurring in certain oil shales which yield a type of oil when heated. |
Kerosene |
a medium-light distillate from the oil refining process intermediate between gas oil and gaseous fuels; used for lighting and heating, and for the manufacture of fuel for jet and turbo-prop aircraft engines. |
Key seating |
the situation that occurs when the drill string wears a groove in the high side of a deviated well bore - this can produce problems by causing the drill string to stick. |
Kick |
the situation that occurs when the formation pressure in a well exceeds the hydrostatic head of the mud column, thus allowing formation fluid to enter the well bore. |
Kick-off |
initiation of planned well deviation |
Killing a well |
overcoming the tendency of a well to flow naturally by filling the well bore with drilling mud of sufficiently high density. To control or stop a kick. |
Kimmeridgian |
a formation in the upper strata of the Jurassic Period that contains both source and reservoir rocks. |