Oilfield

Oilfield

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

Contributors in Oilfield

Oilfield

A measurement of the vertical thickness of reservoir formation that is open to flow. The reservoir height is used in calculations and mathematical models to assess reservoir performance or potential ...

Gamma-gamma log

Oil & gas; Oilfield

A measurement that uses a source of gamma rays and a detector of gamma rays. The term is synonymous with density log, and is just an older name.

Propagation resistivity

Oil & gas; Oilfield

A measurements-while-drilling log of formation resistivity. The log normally contains at least one attenuation and one phase-shift resistivity reading. In many cases there will be multiple curves of ...

Superposition in time

Oil & gas; Oilfield

A mathematical computation that accounts for the flow-rate history in analytical models generated to match with pressure-transient test data. The pressure-derivative response can be distorted in ...

Tensor methods

Oil & gas; Oilfield

A mathematical entity with components that change in a particular way in a transformation from one coordinate system to another. Tensor methods are used in "upscaling" reservoir parameters for use in ...

Productivity index (PI)

Oil & gas; Oilfield

A mathematical means of expressing the ability of a reservoir to deliver fluids to the wellbore. The PI is usually stated as the volume delivered per psi of drawdown at the sandface (bbl/d/psi).

Median

Oil & gas; Oilfield

A mathematical measure of the centrality of a data set. If the data set is arranged in the order of the values, the median is the value of the central data point for an odd number of data, or the ...