18 July 2017

Quicklime

Calcium oxide, CaO, used in certain oil-base muds to neutralize the organic acid.
18 July 2017

Quiescence

The state of being quiet or at rest (being still). Static.
18 July 2017

Racking pipe

The act of placing stands of pipe in orderly arrangement in the derrick after hoisting pipe from the wellbore.
18 July 2017

Radioactivity log

A record of the natural or induced radioactive characteristics of subsurface formations. See radioactivity well logging.