... borehole salinity effective borehole density Upstream Oil & Gas porosity measurement porosity environmental correction log analysis porosity log ratio-to-porosity transform salinity compensation compensate capture ratio dual-exponential fit borehole condition new cased-hole porosity...

... Abstract The porosity and geological texture of tight oil and shale gas samples have significant effects on reservoir production and oil/gas recovery. Classical measurements, such as porosity logs, alone cannot accurately predict the amount of oil and gas storage and final recovery ability...

... Abstract Estimation of total porosity from neutron and density porosity logs in organic shale (source rock) is challenging because these logs are substantially affected by fluid and matrix-composition effects. Conventional interpretation of neutron and density porosity logs often includes...

... and a porosity log. The method is enabled by the recent development of a pulsed-neutron logging tool that combines inelastic and capture gamma ray spectroscopy measurements to provide a robust and accurate total organic carbon estimate. The method differs from the well-known approach of using carbon-to-oxygen...

... * ) characterization processing provides robust fluid saturation and oil viscosity answers. high-resolution antennae investigation porosity characterization antennae spe annual technical conference fluid characterization porosity log main antenna saturation mexico well relaxation time frequency log...

... themselves. This represents a significant advantage over the conventional density, neutron, and acoustic ‘porosity’ logs, which mostly respond to rock properties. Furthermore, the C/TP amplitude can be subdivided into pore size groups associated with clay mineral bound water, capillary bound water and pores...

... and then input to a seismic inversion process to estimate acoustic impedance. Five porosity logs derived from the known model were used as hand data. Using this hard data, and utilizing varying correlation coefficients between the hard data and soft data, a set of gridded maps were generated using...

...-independent porosity measurement. Such a porosity log can be easily understood by and utilized by non-specialists as well as log interpretation experts. The log reflects true porosity even in a complex lithology that changes over the well interval, such as limestone to dolomite transitions with evaporite...

...SOCIETY OF PETROLEUM ENGINEERS OF AIME 6200 North Central Expressway Dallas, Texas 75206 THIS IS A PREPRINT SUBJECT TO CORRECTION PAPER NUMBER SPE 1971 $-k Log (Permeability Definition from Acoustic Amplitude and Porosity Logs) By Cecil L. Bamber, Member AIME, Welex, Div. of Halliburton, Great Bend...