Recent experimental investigations have demonstrated that a substantial amount of H−/D−
ions can be formed by thermal desorption processes. Based on these new findings, new …

With the continuous development of logging tools with controllable neutron sources,
improving the processing method to make their measurements more consistent with those …

Controllable DD neutron sources have a long service life, low cost, and non-radioactivity.
There are favorable prospects for its application in geophysical well logging, since …

The prospecting activities for finding new rare earth elements (REE) sources have increased
greatly in recent years. One of the main discoveries was announced in 2011 by Japanese …

Abstract Americium–Beryllium (AmBe) radiological neutron sources have been widely used
in the petroleum industry for well logging purposes. There is strong desire on the part of …

Many oil well logging tools carry on board highly radioactive C 137 s and/or A 241 m-Be
sources. These dangerous radionuclides are often unsecured and used in remote locations …

As an alternative method for the compensated neutron porosity measurement method, the
neutron-gamma porosity measurement method is widely used in cased holes. However, the …

The porosity response of four proposed generator-based neutron tool concepts is studied
using Monte Carlo simulation of the radiation transport. The objective is to examine, at a …

A well logging tool includes a neutron generator having an ion source cathode comprising a
nano-structure field emission (FE) array for producing a charged particle current routed …

The research contained within outlines a series of simulation studies conducted to design an
oil well logging tool and a testing enclosure that will be used to benchmark a Monte Carlo …