18 July 2017

Safety joint

A special joint used in drilling which can be unscrewed should the tool become stuck in the hole.
18 July 2017

Samples

1) the well cuttings obtained at designated footage intervals during drilling. From an examination of these cuttings, the geologist determines the type of rock and formations […]
18 July 2017

Sand

1) an abrasive material composed of small quartz grains formed from the disintegration of preexisting rocks. Sand consists of particles less than 2 millim and greater […]
18 July 2017

Scratcher

A device that is fastened to the outside of casing to remove mud cake from the wall of a hole to condition the hole for cementing. […]
18 July 2017

Secondary cementing

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 […]
25 July 2017

Seismograph

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 […]
18 July 2017

Semisubmersible drilling rig

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, […]
18 July 2017

Set Casing

To run and cement casing at a certain depth in the wellbore. Sometimes called Set Pipe.
18 July 2017

Settling Pit

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 […]
18 July 2017

Shaker

Shortened form of shale shaker. See Shale Shaker.
18 July 2017

Shaker tank

The mud tank adjacent to the shale shaker, usually the first tank into which mud flows alter returning from the hole. Also called a shaker pit.