|
|
|
|
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.
- Upstream Oil and Gas Consultants get a chance to share their expertise and gain exposure to land future projects.
- Geology students and graduates can join the discussion and get into contact with potential future employees.
|
|
|
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.
|
|
Neutron Porosity Base, Memory (NPBM) |
This is an abbreviation for a well log acquired after or during drilling. You might have encountered this acronym NPBM in your log evaluation software or any (ASCII) log files provided by the logging company. The official name for this log is 'Neutron Porosity Base, Memory'. The business value of this log is often deamed high. This log helps to evaluate the porosity as measured with an neutron logging device. At a more general level these values are measures 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. In general this log thus reflects units of the volume fraction. In other words, 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. Note: This log is kept in the memory of the tool until it is recovered from the well.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:
|
Possibly Related Forum Topics
|
|
|
|
|
|