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Oil Authority›Glossary›D›dope

dope — Oil & Gas Glossary

To place lubricant on drillpipe, also known as "doping" the pipe.

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DD

An individual trained in the science and art of intentionally drilling a well along a predetermined path in three-dimens

DEA unit

A treating system used to remove hydrogen sulfide [H2S], carbon dioxide [CO2] and carbonyl sulfide from a gas stream. Th

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A seismicprofile recorded specifically to study the lower crust, the Mohorovicic discontinuity and the mantle of the Ear

DST

Well tests conducted with the drillstring still in the hole. Often referred to as DST, these tests are usually conducted

DST pressure chart

The characteristic plot of pressure versus time obtained from the mechanical recording of pressure gauges in a DST tool.

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Units of atm, cm3/s, cp and D, as originally used by Darcy in flow experiments.

Deadline

The drilling line from the crown block sheave to the anchor, so called because it does not move.

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