Any cementing operation after the primary cementing operation. Secondary cementing includes a plug-back job, in which a plug of cement is positioned at a specific point […]

A device that detects vibrations in the earth. It is used in studying the earth’s interior and in prospecting for probable oil-bearing structures. Vibrations are created […]

A floating offshore drilling unit that has pontoons and columns that, when flooded, cause the unit to submerge to a predetermined depth. Living quarters, storage space, […]

A pit that is dug in the earth for the purpose of receiving mud returned from the well and allowing the solids in the mud to […]