... porosity porosity drill cuttings contamination saturation rd annual logging symposium structural geology diesel workflow horizontal well bulk density upstream oil & gas matrix density density measurement optimized nmr-based workflow spwla-2022-0066 SPWLA 63rd Annual Logging Symposium...

... core analysis upstream oil & gas information reservoir characterization structural geology concentration dolomite mineralogy well logging log analysis ferroan dolomite spwla-2021-0042 skagerrak 2 spwla 62 matrix density endpoint producer nd annual logging symposium ivar...

... provide reservoir data throughout all the phases of the field development. A nuclear magnetic resonance (NMR) based method was developed to accurately determine petrophysical properties including porosity, bulk density, and matrix density from drill cuttings of unconventional tight reservoirs. NMR...

... be applied successfully in different reservoirs for more reliable and precise reservoir evaluation and production planning. Upstream Oil & Gas porosity grain density total porosity spwla 55 saturation evaluation pore space well logging matrix density relaxation hydrocarbon relaxation...

... which include or are related to rock porosity. log analysis matrix density NMR TOC measurement pseudo matrix density Upstream Oil & Gas porosity Symposium fraction hydrogen SHC spwla 54 fluid density well logging fluid porosity application pore space equation paleo porosity...

... component in solving for the rock volumetrics. The amount of kerogen in the rock affects solid rock matrix density. By restructuring the previous domains with just the solid rock components the volume percent of kerogen in the rock can be solved. The solid volume domain is represented by the figure below...

... the end points of reservoir rock (sandstone, limestone, and dolostone) sigma, matrix density, and neutron response. If this information is not available, it is a common practice to assume that the reservoir rocks are pure minerals, thus the default values of quartz, calcite, and dolomite are used in log...

... concentration log matrix density dolomite Upstream Oil & Gas accuracy neutron well logging concentration anhydrite evaluation Symposium epithermal neutron log mineralogy calcite spwla 47 carbonate spectroscopy Herron epithermal neutron porosity Neutron log interpretation SPWLA 47th...

... applied to fast NMR bound fluid logging data and permits comprehensive formation evaluation under favourable conditions using fast NMR logging. well logging irreducible water saturation cutoff log analysis oil-base mud matrix density porosity Symposium fluid component NMR core data obm...

... ABSTRACT Formation matrix properties, such as matrix density, can be estimated from the elemental concentrations available from modern, openhole, nuclear spectroscopy logging techniques. Although this estimation is similar to that of mineral-based interpretation frequently practiced today...

... mobility of the gas. log analysis Upstream Oil & Gas nmr evaluation gas zone well logging halite deterministic approach reservoir characterisation Netherlands porosity core porosity permeability calculation NMR Symposium information gas interval conventional log matrix density...

... the data into formation characteristics such as mineralogy, matrix density and permeability. We conclude that elemental concentrations are satisfactorily estimated but that standard contractor software does not (yet) accurately quantify the desired petrophysical properties. The estimation of elemental...

.... The mineral abundances are used to derive a matrix density which is combined with a bulk density measurement to produce a significantly improved total porosity log. In the example wells, the porosities are typically 5 porosity units less than the average of neutron and density, and they agree with total...

... in limestone test formations. This paper details how this process can be made more accurate by also including matrix density and sigma data. A tool model uses basic nuclear cross sections and calculations of effective neutron migration lengths in order to correct measured ratios for observed matrix density...

... that includes Si02 matrix densities from 2.2 to 2.65 g/cc and porosity values from 0 to 100%. Field ata in diatomaceous formations are discussed and are shown to closely agree with theoretical predictions. DSN-II ratios and apparent limestone porosity values can be calculated from the model for awide class...

.../gallon mud, we were able to determine that consistent results are achieved regardless of mud weight. well logging pe data heavy drilling mud standard error 0 mud weight Upstream Oil & Gas matrix density log analysis background matrix model shale grain density correlation...

... calculated from the density log might be too low if standard procedures are used. Laboratory-measured matrix densities tended to be higher than the 2.65 gm/cc normally assumed for sandstones. The cement in these sandstones appears to be a high density carbonate. Low porosity zones in the Natural Buttes...

... with the available geological data and production history. calculation Upstream Oil & Gas log analysis Spwla Twelfth porosity coriband result logic saturation correction Coriband secondary porosity Schlumberger clay indicator well logging matrix density frequency plot limestone...