... & gas capture cross section repeatability sandstone gamma ray curve interpretation base log well logging gamma ray log time-lapse comparison sigm curve perforation log analysis effective porosity porosity saturation change variation low-salinity environment evaluation reservoir pnc...

... correction statistical imprecision accuracy production control formation evaluation intrinsic cross section repeatability production monitoring fluid cross section production logging Pulsed-neutron capture (PNC) logs are run in most major producing oil fields to monitor fluids behind casing...

...Daniel T. Georgi Summary Induced gamma ray spectroscopy (IGRS) logs from two cyclic-steam-stimulation observation wells in Cold Lake were analyzed to determine the vertical resolution and repeatability of data derived from gamma rays of inelastic and capture neutron reac tions. Time-series analysis...