Drilling

Drilling

Of or relating to the penetration of the Earth's surface in order to extract petroleum oil.

Contributors in Drilling

Drilling

In fishing operations, a large-diameter pipe fitted with an internal grappling device and tungsten carbide cutting surfaces on the bottom. The washover pipe can be lowered over a fish in the wellbore ...

encapsulation

Oil & gas; Drilling

In drilling fluid parlance, the absorption of a polymer film onto cuttings and wellbore walls to form a coat or barrier. The term is usually applied to shale encapsulation by long-chain, ...

polar

Oil & gas; Drilling

In chemistry, referring to a compound in which electrons are not shared equally in the chemical bond, resulting in partial electrical charges. The best example is water, H 2 O, where the oxygen atom ...

U-tube effect

Oil & gas; Drilling

In a U-tube manometer, the height of one leg of fluid changed by altering the density of some of the fluid in the other leg. In a well with drillpipe in the hole, the string of drillpipe is one leg ...

titration

Oil & gas; Drilling

In chemical analysis, a procedure to determine the amount of a constituent in a sample by adding a measured volume of reagent until the reaction between the constituent of interest and the reagent is ...

CPMG

Oil & gas; Drilling

In a nuclear magnetic resonance (NMR) measurement, referring to the cycle of radio frequency pulses designed by Carr, Purcell, Meiboom and Gill to produce pulse echoes and counteract dephasing due to ...