Inventor

GRAU JAMES A

US24 patents

⚠️ This page may combine multiple inventors who share the name “GRAU JAMES A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

GRAU JAMES A

SCHLUMBERGER TECHNOLOGY CORP

Logging apparatus and method for determining absolute elemental concentrations of subsurface formations

Method and apparatus for gamma ray logging of underground formations

Broad energy spectra neutron source for logging and method

Methods and apparatus for borehole-corrected spectral analysis of earth formations

Spectroscopic analysis with background compensation

Methods and apparatus for calibration of BGO scintillator gamma ray energy spectra

Methods and apparatus for constituent analysis of earth formations

Gamma-ray detectors for downhole applications

Method for investigating the composition of an earth formation traversed by a borehole

Combining inelastic and capture gamma ray spectroscopy for determining formation elemental

Method for filtering for interpretation of neutron induced gamma ray measurements

Neutron-induced gamma-ray spectroscopy that accounts for environmental dependence of inelastic gamma-ray emission spectra

Hydrocarbon saturation from total organic carbon logs derived from inelastic and capture nuclear spectroscopy

Gamma-ray detectors for downhole applications

Method of determining an element value

Correcting gamma-ray energy spectra for pileup degradation

Gamma-ray detectors for downhole applications

BERHEIDE MARKUS

Scintillator based radiation detection

Intrinsic radioactivity in a scintillator as count rate reference

GRAU JAMES A

Nuclear spectroscopy corrections using multiple standards and spatial regions

Environmental corrections in nuclear spectroscopy using variable element ratio

PFUTZNER HAROLD

Method for measuring formation water salinity from within a borehole

ROSCOE BRADLEY A

Gamma-ray detectors for downhole applications

MATHIEU GILLES

Mining systems and methods