Scale monitor

Scintillator device

Shielded pads for detecting subsurface radiation phenomena

Shielded pads for detecting subsurface radiation phenomena

Sigma/porosity tools with neutron monitors

Sigma/porosity tools with neutron monitors

Simultaneous fluid flow and fluid density measurements using rot

Simultaneous gamma ray measurement of formation bulk density and

Simultaneous logging system for deep wells

Simultaneous neutron lifetime and oxygen activation and fluid sa

Simultaneous oxygen and silicon neutron activation well log usin

Simultaneous thermal neutron decay time and porosity logging sys

Simultaneous thermal neutron decay time and shale compensated ch

Sourceless downhole X-ray tool

Spectral gain stabilization using gross shape features of largel

Spectral gamma ray logging-while-drilling system

Spectrometric gamma diagraphy system for the determination of th

Stabilized radioactive logging method and apparatus

Stand-off compensation for nuclear MWD measurement

Standoff compensation for nuclear logging while drilling systems