..., they may be assigned with endpoints for a limited set of minerals, or they may be estimated via empirical relationships with elements from geochemical spectroscopy logs (Herron and Herron, 2000; Herron et al., 2002). All these classical approaches require manual input, leading to a degree of subjectivity...

... calculation july 29 rxo rt hydrocarbon petrophysics drilling operation herron log sw envelope symposium core sw fluid dynamics shale mineralogy high free porosity free porosity june 24 spwla 61 interpretation permeability SPWLA 61st Annual Logging Symposium, June 24 to July 29, 2020 1...

... production data in our case studies. Fluid Dynamics development well Herron geochemical log spwla 60 effective permeability Upstream Oil & Gas formation tester permeability measurement Symposium workflow estimation k-lambda model pretest permeability flow in porous media absolute...

...) with knowledge of mineral endpoints (e.g., Table1; Herron and Matteson, 1993; Herron et al., 2014). Herron et al. (2014) have published results showing how this approach can produce log-based mineralogy results in good match with a core measured mineralogy reference. Table 1. Elemental composition of typical...

... inherent to log interpretation in organic-rich formations. log analysis machine learning Reservoir Characterization Artificial Intelligence concentration organic-rich mudrock porosity Upstream Oil & Gas kerogen property organic matter mineralogy thermal maturity well logging Herron...

... source rock or equivalents elsewhere in the region). log analysis lateral porosity Computation Upstream Oil & Gas assessment bitumen evaluation well logging pilot well maturity thermal maturity kerogen Reservoir Characterization Herron spwla 59 mineralogy Symposium...

..., completion, and production decisions. FTIR provides this analysis, with an accuracy that is consistently superior to industry XRD. shale gas Herron concentration laboratory complex reservoir Symposium quantitative mineral analysis accuracy mineralogy elemental concentration shale oil...

... (SpectroLith*, Herron and Herron 1996a, 1996b). This provided better control on clay volume and a better clay correction on neutron-density data for porosity and gas volume. However, the total clay volume estimates from SpectroLith in the overburden section exhibited variations both vertically along the well...

...1 APPLICATION AND QUALITY CONTROL OF CORE DATA FOR THE DEVELOPMENT AND VALIDATION OF ELEMENTAL SPECTROSCOPY LOG INTERPRETATION Susan Herron, Michael Herron, Iain Pirie, Pablo Saldungaray, Paul Craddock, Alyssa Charsky, Marina Polyakov, Frank Shray, Ting Li, Schlumberger Copyright 2014, held jointly...

...SPWLA 55 th Annual Logging Symposium, May 18-22, 2014 1 KEROGEN CONTENT AND MATURITY, MINERALOGY AND CLAY TYPING FROM DRIFTS ANALYSIS OF CUTTINGS OR CORE Michael M. Herron, Mary Ellen Loan, Alyssa M. Charsky, Susan L. Herron, Andrew E. Pomerantz, Marina Polyakov, Schlumberger-Doll Research...

... be converted into minerals, then the properties of the minerals can be used to aid computation of petrophysical parameters such as porosity and water saturation. An early spectroscopy logging procedure was named and trademarked ECS (Elemental Capture Spectroscopy) by Schlumberger (Herron and Herron, 1996). ECS...

.... Recording gamma ray count rate as well as gamma ray energy allows one to estimate the relative abundance of specific elements. Weight percent of elements such as silicon, calcium, iron, and sulfur can be used to quantify quartz, carbonates, clay, evaporites, and heavy minerals (Herron and Herron, 1996...

...)) scintillation detector (Hertzog, 1980). The emergence of new scintillation detectors led to tools based on gadolinium oxyorthosilicate (GSO) (Scott et al., 1991) and bismuth germanate (BGO) (Herron and Herron, 1996a), both of which are still in active use. Ruggedization of PNG technology enabled...

... 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...

... work, transforms have been derived to convert these relative elemental yields to elemental concentrations and lithology (Herron et al., 1996). Formation grain characteristics such as grain density, grain photoelectric factor, grain sigma, and grain neutron response can then be computed from...

.... well logging chemistry matrix density algorithm log analysis Herron organic matter application nuclear spectroscopy log mineral Artificial Intelligence quartz porosity Symposium calcium Upstream Oil & Gas concentration siderite elemental concentration spwla 41 Sulfur bulk...

... logging neutron-density crossplot hydrogen index Herron neutron absorber application saturation reservoir Symposium interpretation spwla 38th Crossplot epithermal neutron measurement mineral SPWLA 38th Annual Logging Symposium, June 15-l8,1997 APPLICATIONS OF AN EPITHERMAL NEUTRON...

... in clastics based on improved clay and carbonate volumes and 5) provided chemostratigraphy information for enhanced geologic correlation and reservoir modeling. well logging information Herron cased well porosity carbonate Upstream Oil & Gas gamma ray evaluation log analysis concentration...

... resistivities in order to achieve a satisfactory interpretation. These problems are largely eliminated by using Qv directly. well logging Clavier shale Herron perfect shale model conductivity mineralogy log analysis total porosity spwla 31st Resistivity interpretation abundance equation...

...SPWLA Twenty-Eighth Annual Logging Symposium, June 29-July 2, 1987 Estirnating the Intrinsic Permeability of Clastic Sediments from Geochemical Data Michael M. Herron Schlumberger-Doll Research Old Quaxry Rd. Ridgefield, CT 06877-4108 USA Abstract Clay and framework mineralogy, determined from...