Any method used to raise oil to the surface after a well ceases to flow.

The legal instrument whereby oil and gas leases are assigned/conveyed.

The person to whom oil and gas leases are assigned.

Person who conveys the oil and gas leases in an assignment.

If a well drills through several pay zones and is completed in the deepest productive reservoir, casing is set all the way down to the producing zone. Viewed from (a perspective) inside the borehole, reserves in the shallower pay zones up the hole are behind the casing pipe.

An uncontrolled flow of gas, oil or other well fluids from the well.

The hole created by the drilling of a well.

The lowest or deepest part of a well.

Water that has a quantity of salt, especially sodium chloride, dissolved in it; salt water.

A unit of heat energy, used to describe the amount of heat that can be generated by burning oil or gas.