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Welcome to Petroleum Geology Forums
This is a free online community that aims to bring petroleum professionals and geologists together and share valuable knowledge. Registration is easy so become a member now for instant free access.
- Petroleum Geologists can stay up to date with industry related topics and exchange ideas and concepts.
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Petroleum Geology AcronymsBrowse through the Acronyms using the letters above or search for the acronym or it's description using the form below. If you have a acronym or abbreviation you would like to see in this list please contact us.
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Field Normalized CNC (CNCF) |
This is a log of measurements along a well bore (a well-log). The acronym CNCF can be found in any (ASCII) log files provided by the logging company. The acronym stands for 'Field Normalized CNC'. This log is often used in the industry. The values of this log represent the porosity as measured with an neutron logging device. In general this log thus reflects units of the apparent porosity. In other words, the initial estimate of porosity, normally from logs, not corrected for the (often large) effects of clays, gas, etc. Such estimates should only be used for qualitative interpretation of clean, gas-free intervals. At a higher level, this can be seen as a measure of the volume fraction. This can be explained as being the ratio of the volumes occupied by two components, or by one component to the total volume of the system.This log usually has the unit 'Porosity'. This is the pore volume per unit gross volume. Porosity is determined from measurements on cores or interpreted from logs. Data for this log is produced by a tool that uses a neutron logging technique and can be used to investigate the porosity of the formation. Similar logs are listed below: - Neutron Porosity Dolomite, Borehole Corrected, Transmitted (NPDX)
- Neutron Porosity Sandstone, Borehole Corrected, Memory (NPSM)
- APS High Resolution Near/Far Corrected Dolomite Porosity (HFMC)
- Density Porosity Limestone, Memory (DPLM)
- Smoothed Neutron Porosity (LS, SS, or DOL) With Temperature and Pressure Corrections Applied (NTCP)
- APS High Resolution Near/Far Corrected Limestone Porosity (HFLC)
- Thermal Neutron Porosity, Enhanced Vertical Resolution (NTNP)
- Smoothed Neutron Porosity (LS, SS, or DOL) With Subsequent Formation Salinity, Temperature, and Pressure Corrections Applied (NUCP)
- Enhanced Thermal Neutron Porosity in Selected Lithology (NPOR)
- Smoothed CNP (Limestone Matrix-Caliper Corrected) (SPLC)
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