A wireline log of the yields of different elements in the formation, measured using induced gamma ray spectroscopy with a pulsed neutron generator.

Pulsed Neutron Logging (PNL) is a vital cased-hole logging technique used in the oil and gas industry to identify and quantify hydrocarbons behind casing. It's particularly adept at differentiating between water and oil, a crucial task for optimizing production and maximizing well productivity. How PNL Works:

2023年12月1日 · Using the Monte Carlo method, we conducted a comprehensive numerical simulation to investigate the response of the pulsed neutron logging in gas-bearing tight sandstone reservoir. We developed the saturation evaluation method based on the relative variation of the epithermal neutron count rates (denoted by De).

They are also called Pulsed Neutron (PNL) or Pulsed Decay Time (PDK) Logs. The primary measurement is the formation capture cross section ISIGMA). Some tools provided a compensated neutron porosity (TPHI) derived from the ratio of the near to far detector count rates.

Hotwell US is supported by the renowned Hotwell Petrophysical Staff. The Hotwell Log Analysis Center (LAC) has been operating since 1997 as support for the Hotwell Pulsed Neutron Neutron (PNN) tool. Initially it was primarily focused on the PNN …

2015年7月18日 · Register for free to access technical papers and technology news tailored to your interests. A new-generation slim pulsed neutron logging tool has been developed to deliver reliable answers for formation evaluation and reservoir monitoring in conditions where existing technologies struggle, including temperatures up to 175 degC.

2022年9月27日 · This paper introduces a novel pulsed-neutron log design that was successfully practiced in Bukit Tua, where it took the advantages from Sigma log modes to efficiently overcome the challenges of...

2025年1月29日 · PNL logs measure the die-away time of a short-lived neutron pulse. They probe the formation with neutrons but detect gamma rays. Chlorine has a particularly large capture cross section for thermal neutrons.

2017年4月11日 · What if you want to know the current water saturation after years of production? The answer: You run a sigma log or a C/O log using a Pulsed Neutron Log Tool (PNL). The PNL tool you use...

2024年2月12日 · The examples in this paper demonstrate the usage of the OA continuous logs and WFL stations where pulsed neutron logging (PNL) have been run in a few wells in Malaysia. These logs have been recorded in wells with variation/complex completions ranging from single completion with gravel pack assembly to openhole completions with screens.