18 July 2017

LACT unit

An automated system for measuring, sampling, and transferring oil from a lease gathering system into a pipeline. See Lease Automatic Custody Transfer.
18 July 2017

Latch on

To attach elevators to a section of pipe to pull it out of or run it into the hole.
18 July 2017

Lead tongs

The pipe tongs suspended in the derrick or mast and operated by a wireline connected to the breakout cathead. In coming out of the hole, they […]
25 July 2017

Leak-off test

The leak-off test (LOT) is routinely used to verify that the cement and formation being tested can withstand predicted wellbore pressures and that it’s safe to […]