If you do not know your password or are having trouble with this site, you can contact PEF MIS at 518-785-1900 ext: 308 OR (800) 342-4306 ext: 308 and we will help you through the steps. …

The photoelectric factor (PeF) was introduced in the early-1980's as a supplementary measurement to the bulk density measurement by Schlumberger, who signaled its …

The log measures the photoelectric absorption factor, P e, which is defined as (Z/10) 3.6 where Z is the average atomic number of the formation. P e is unitless, but since it is proportional to the …

The litho-density log is a new form of the formation density log with added features. It is typified by Schlumberger’s Litho-Density Tool (LDT). These tools have a caesium-137 source emitting …

The Photoelectric Factor (PeF) Log. The photoelectric factor (PeF) was introduced in the early-1980's as a supplementary measurement to the bulk density measurement and records the …

Potential ambiguities of this type can be resolved by reference to the photoelectric factor (PeF) curve which has been recorded as fairly standard practice by almost all service companies …

Jan 1, 1994 · The photoelectric index (Pe) is a supplementary measurement by the latest generation of density logging tools, and records the absorption of low-energy gamma rays by …

Aug 14, 2023 · The photoelectric factor (PEF) is an important well-logging tool to distinguish between different types of reservoir rocks because PEF measurement is sensitive to elements …

It discusses how density and PEF are measured, the principles behind the logs, and their applications. Density logs measure bulk density and can be used to calculate porosity. PEF …

Sep 4, 2024 · Photoelectric Factor (PEF) Log: Helps differentiate between lithologies within low-GR zones. Example: A low GR zone with high PEF might indicate limestone, while a low GR …