Oilfield

Oilfield

Oilfield refers to a region with an abundance of oil wells extracting petroleum from below the ground.

Industry: Oil & gas

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Oilfield

adjusted flow time

Oil & gas; Oilfield

The approximated flow time used for a well-test analysis when the flow rate varies before or during the test period. It is calculated as t = cumulative well production since the last extended ...

fishing

Oil & gas; Oilfield

The application of tools, equipment and techniques for the removal of junk, debris or fish from a wellbore. The key elements of a fishing operation include an understanding of the dimensions and ...

The application of nuclear magnetic resonance (NMR) logging to the determination of hydrocarbon type (gas, light oil, medium oil, heavy oil), using only NMR data. Three techniques are most commonly ...

metal gain

Oil & gas; Oilfield

The apparent increase in thickness of a casing or tubing string compared to the assumed value. Metal gain is determined by electromagnetic thickness, acoustic resonance or mechanical methods. The ...

deviation

Oil & gas; Oilfield

The angle at which a wellbore diverges from vertical. Wells can deviate from vertical because of the dips in the beds being drilled through. Wells can also be deliberately deviated by the use of a ...

continuity equation

Oil & gas; Oilfield

Material balance expressed in a differential equation.

transient-rate and pressure-test analysis

Oil & gas; Oilfield

The analysis of transient rate and pressure data taken while a well is flowing at variable rates. The analysis uses either deconvolution or convolution to correct for the flow-rate variations and can ...