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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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Thermal Neutron Porosity, Bottom, Real-Time (TNPB_RT) |
This is the name of a log measured along a well bore (a well-log). You could have found the code TNPB_RT in your log evaluation software or your corporate datastores. The abreviatin stands for 'Thermal Neutron Porosity, Bottom, Real-Time'. This log is very common in the industry. This log can be used to evaluate the porosity as measured with a thermal neutron logging device. So basically this is a measure of the porosity as measured with an neutron logging device. In general this is a measurement of the apparent porosity. This is a measure of 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. Furthermore, this can be explained by looking at 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:
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