18 July 2017

Abandon

v. – To cease producing oil and gas from a well when it becomes unprofitable or to cease further work on a newly drilled well when […]
18 July 2017

Acid fracture

To part or open fracture in production hard limestone formations by using a combination of oil and acid or water and acid under high pressure. See […]
18 July 2017

Acidize

To treat oil-bearing limestone or other formations with acid for the purpose of increasing production. Hydrochloric or other acid is injected into the formation under pressure. […]
18 July 2017

Back off

To unscrew one threaded piece (such as a section of pipe) from another.
18 July 2017

Back up

To hold one section of an object such as pipe while another section is being screwed into or out of it.
18 July 2017

Break out

1) to unscrew one section of pipe from another section, especially drill pipe while it is being withdrawn from the wellbore. During this operation, the tongs […]
18 July 2017

Breaking down

Usually means unscrewing the drill stem into single joints and placing them on the pipe rack. This operation takes place at the completion of the well […]
18 July 2017

Buck up

To tighten up a threaded connection (such as two joints of drill pipe).
18 July 2017

Catch samples

To obtain cuttings for geological information as formations are penetrated by the bit. The samples are obtained from drilling fluid as it emerges from the wellbore […]
18 July 2017

Cement case

To fill the annulus between the casing and wall of the hole with cement to support the casing and prevent fluid migration between permeable zones.
18 July 2017

Come out of the hole

To pull the drill stem out of the wellbore to change the bit, to change from a core barrel to the bit, to run electric logs, […]