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Oil & gas

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

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Oil & gas > Oilfield

eddy-current measurement
Oil & gas; Oilfield

A technique for measuring the effect of pits and holes in the inner wall of a casing on a high-frequency electrical signal induced in the casing. The eddy-current measurement is ...

summation of fluids method
Oil & gas; Oilfield

A technique for measuring the effective porosity of a core sample by summing the volumes of the fluids recovered from it. The volumes of the gas, oil and water in the sample ...

buoyancy method
Oil & gas; Oilfield

A technique for measuring the bulk volume of a core sample by submerging it in a bath of mercury and observing the increase in weight of the bath, following Archimedes principle. ...

mercury displacement method
Oil & gas; Oilfield

A technique for measuring the bulk volume of a core sample by observing the displacement of mercury in a chamber. The chamber is first filled to a reference level and the volume ...

crosswell electromagnetic tomography
Oil & gas; Oilfield

A technique for measuring formation resistivity between two or more wells. This technique measures the signal between an electromagnetic induction transmitter in one well, and a ...

crosswell tomography
Oil & gas; Oilfield

A technique for measuring a signal that is broadcast from a transmitter or source located in one well, to a receiver array placed in a neighboring well. This technique is used to ...

two-pass method
Oil & gas; Oilfield

A technique for interpreting the results from a spinner flowmeter using two logging runs over the zone of interest, one up and one down. If the two passes are run at the same ...

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