... clay content of up to 20% bulk volume with kaolinite as the dominant clay type. In the shaly zones which contain Fe-rich minerals, the grain density is significantly higher. The measured Co-Cw data indicate cation-exchange-capacity (CEC) values of up to 0.08 meq/gm, consistent with typical values...

... density porosity, the latter being more consistent with actual values. In addition the grain density calculated by helium injection is significantly lower than the grain density estimated from Elemental Capture Spectroscopy (ECS) and X-Ray Diffraction (XRD). Disregarding these effects complicates the core...

... petrophysical models based on basic suites of logs. Such models can best predict petrophysical properties (grain density, porosity, and water saturation), when reliable laboratory measurements on rock samples are available for calibration purposes. This paper describes a workflow that utilizes a considerable...

... response equations and interpretation constraint equations. The first approach assumes that the weight fraction total organic carbon (TOC) is available from an external source, the rock grain density is known, and total water saturation is constant. This enables for the first approach the use of a single...

... and processing; direct measurements on cuttings, including grain density, porosity, spectral Gamma Ray (GR), Nuclear Magnetic Resonance (NMR), X-ray diffraction (XRD), X-ray Fluorescence (XRF); and sophisticated mud gas analysis capabilities. We illustrate the power of AML techniques with examples from...

... property upper almond porosity sandstone complex reservoir gas reservoir Photomicrograph log analysis Upstream Oil & Gas fluid saturation grain density Symposium lithology petrophysical model reservoir Wamsutter field Almond tight gas reservoir wamsutter tight gas reservoir lower...

... logs consisting of multi-depth resistivity, gamma ray, neutron, density, dipole sonic, NMR, spectroscopy, resistivity imager, pressure/fluid samples, and rotary cores. log analysis log response porosity petrophysical model core analysis company water saturation grain density Upstream Oil...

... in well logging data mining porosity log signature chert separation Reservoir Characterization complex reservoir log analysis dolomite fracture network grain density al kharrata east field Upstream Oil & Gas mAh Symposium fracture fracture model heterogeneous tight fractured...

... and lo Upstream Oil & Gas modern log neutron porosity absorption pyritic interval frequency PEF field example Symposium resistivity log analysis concentration neutron grain density pef curve pyrite well logging Clavier sedimentary rock porosity thermal neutron mineral...

... ABSTRACT In clastic environments, the density log is often found to be the most suitable log measurement for porosity prediction because total porosity can be determined directly from core calibration of the density tool response equation. Calibration values for rock matrix/grain density...

... that the organic matter content of Athel silicilyte varies with depth in a given well. The resulting grain density changes should be accounted for in the interpretation of the density log. Traditional wireline-based TOC evaluation methods developed for the evaluation of source rocks do not readily apply, and have...

... is a complex mineral composed mainly of iron, potassium, and magnesium hydrated aluminum silicates. Due to its complex mineralogy in particular variations in iron content, it has a wide range of grain densities. Modeling the effects of glauconite on the responses of density, Pe and neutron porosity logs has...

... log interpretation, which otherwise could be responsible for unnecessary tests and erroneous reserves estimations. well logging porosity evaluation organic matter grain density Upstream Oil & Gas mineralogy petrophysical measurement Symposium interpretation mineral reservoir...

... of the reservoir and the effect of gas on the log data. The laboratory-measured porosities were used to evaluate the success of the log-derived porosity calculations. machine learning Upstream Oil & Gas well logging grain density class Artificial Intelligence shale core grain density porosity...

.... By this procedure, log-derived and core-derived porosity can be reconciled. Examples of successful application of this method are shown from a variety of formations worldwide. log analysis resolution porosity data quality reconciliation grain density Symposium effective porosity core analysis...

... of porosity, grain density and permeability measurements on less than 1-1/2 grams of 6-18 mesh cuttings are presented. The cuttings data accuracy is based on parent conventional core plug data, and repeatability statistics are based on multiple tests of the simulated drill cuttings. The analytical methods...

.... log analysis well logging Upstream Oil & Gas water saturation waxman-smit model Phillips core porosity porosity conductivity core analysis filtrate invasion grain density determination core water saturation fraction saturation permeability Symposium correction invasion Tr Tr...

... Pe measurement interpretation sequence shale grain density correlation coefficient SPWLA TWENTY-SIXTH ANNUAL LOGGING SYMPOSIUM, JUNE 17-20, 1985 u IMPROVED SHALY SANDANALYSISIN HEAVY DRILLING MUDS: A SIMPLE TECHNIQUE FOR USING THE PHOTOELECTRIC MEASUREMENT Gerald C. Kukal and Robin E. Hill...

... thin bed resolution log porosity Crossplot grain density Reservoir Engineer neutron poor data core data SPWLA TWENTY-FOURTH ANNUAL LOGGING SYMPOSIUM, JUNE 27-30, 1983 THINBED RESOLUTION Ah!DOTHER PROBLEMS IN MATCHING LOG AND CORE DATA by J.M. Hamilton J.M. Stewart Dome Petroleum Limited...

... and mineralogically by careful core description, and emission and mass spectroscopy was performed on a number of selected and preserved samples for element identification. Whole core analysis was performed on selected and preserved core samples to determine porosities, permeabilities, grain densities, and wherever...