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Oil & gas

Terms concerning oil and gas as a fossil fuel and natural resource.

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Oil & gas > Drilling

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Oil & gas; Drilling

To add a length of drillpipe to the drillstring to continue drilling. In what is called jointed pipe drilling, joints of drillpipe, each about 30 ft (9 m) long, are screwed ...

spot

Oil & gas; Drilling

To accurately place a fluid, or fluid interface, at a given position within the wellbore. Treatment fluids such as cement slurries and stimulation fluids for localized treatment ...

funnel viscosity

Oil & gas; Drilling

Time, in seconds for one quart of mud to flow through a Marsh funnel. This is not a true viscosity, but serves as a qualitative measure of how thick the mud sample is. The funnel ...

fingerboard

Oil & gas; Drilling

The working platform approximately halfway up the derrick or mast in which the derrickman stores drillpipe and drill collars in an orderly fashion during trips out of the hole. ...

borehole

Oil & gas; Drilling

The wellbore itself, including the openhole or uncased portion of the well. Borehole may refer to the inside diameter of the wellbore wall, the rock face that bounds the drilled ...

particle-size distribution

Oil & gas; Drilling

The weight, or net volume, of solid particles that fall into each of the various size ranges, given as a percentage of the total solids of all sizes in the sample of interest. ...

equivalent sack

Oil & gas; Drilling

The weight of any cementitious material or blend based on the absolute volume of the cement. The term is normally used to define a 鈥渟ack鈥?of cement blend in which part of the ...