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Petroleum Geology Acronyms

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Neutron Data Density (DDN)

This is a well log used in the oil and gas industry. The acronym DDN is a unique identifier to recognize this particular log and can be encountered in your log evaluation software or your corporate datastores. The acronym stands for 'Neutron Data Density'. The usage of this log is well established.

The values of this log represent the density of data samples per length of borehole traversed, for a neutron logging measurement.

Furthermore, this can be explained by looking at the mwd data density. This can be explained as being the density of data samples per length of borehole traversed; may be expressed as samples per unit length or as a Boolean indicator of sample presence within a depth frame.

Concluding, this is a measure of the density (mass per unit volume) of a material. Usually at Standard conditions (STP). Also used to indicate the frequency of occurrence.

This log usually has the unit 'Counts Per Length'.

Data for this log is produced by a tool that uses a neutron logging technique and can be used to investigate the data density of the acquisition process. Similar logs are listed below:

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