23.11.2018

Sealing equipment installed in the casings and liners.

22.11.2018

A casing string that does not extend to the top of the wellbore, but instead is anchored or suspended from inside the bottom of the previous casing string

Horizontal drainhole means that portion of a wellbore with 70 to 110 degrees deviation from the vertical drilled at least 100 feet into the producing interval beginning at the point where the wellbore penetrates the producing interval and ending at the farthest point drilled with the producing interval

a cement plug installed inside the production tubing

A plug that prevents the entry of oil and gas inside the drilling zone without abandonment.

Temporary: a temporary sealing of a well that enables to open it in the future for any purpose.

Permanent:  a permanent sealing of a well.