... spectroscopy tool, the logging program also included gamma ray, spectral gamma ray, neutron porosity, and density. This suite of tools supplied the measurements required to characterize the formation through the determination of mineralogy, porosity, and hydrocarbon saturation. The mineralogical model...

... for predicting elastic properties of rocks, including the P-wave velocity from measured petrophysical properties, namely porosity, mineralogy, and the pore fluid. However, the mineralogy input, such as the clay content, was missing in the well data. Therefore, the clay content was calculated from the gamma ray...

... associated logs, e.g., gamma ray, with a reference log that was measured in a previous run ( Torlov, et al., 2017 ). The automation of this process would speed up the verification and ensure consistency and accuracy. A number of challenges exist in developing such automation workflow. In particular...

... Abstract Azimuthal gamma ray (GR) logging-while-drilling (LWD) tools have demonstrated great value for geosteering applications in directional drilling. Their ability to indicate the relative stratigraphic position of the drilling assembly can determine whether the well should be steered up...

... Intelligence correlation Tariq abdulraheem prediction predict water saturation saturation Mahmoud neural function carbonate rock society of petroleum engineers estimation saturation model fn model gamma ray coefficient reservoir equation Introduction In 1942 Archie developed...

... Abstract Today’s fast-paced development of petroleum resources depends on an efficient and accurate evaluation of both clastic and unconventional reservoirs. A new high-performance, slim logging-while-drilling (LWD) natural gamma ray spectroscopy tool has been developed to assist real-time...

... operations, the log data was revisited – in particular detailed interpretation was conducted of all the recorded log measurements, including: Log data resolution enhancement, including enhancement of LWD bulk density and gamma ray images to enhance imaging of smaller scale features High resolution...

... However, the petrophysical logs have their limitations in formation evaluation. The measurements of petrophysical logs are sensitive to logging environment. For example, special additives in mud may lead to higher value of gamma ray and density, and bad hole condition could make the density log...

... scintillator so that detector dead time could be drastically reduced. A boron coating is applied to the housing in the vicinity of the generator-detector system. Consequently, gamma rays from the housing material from slow neutrons are eliminated, resulting in a significantly improved capture energy spectrum...

... with a 12-in antenna aperture. It is fully combinable with resistivity, neutron, density, gamma ray, and other openhole wireline sensors. The side-looking design enables broad coverage of borehole sizes ranging from 5⅞ to 17½ in.; the multifrequency operation maximizes the data density for efficient logging...

... by the absorption of low-energy gamma rays in the tool (housing or collar, chassis, detector packaging, etc.). In some cases, a higher electronic threshold can be set due to limitation of the electronics or to avoid the impact of noise, particularly at high temperatures. This effect has also been studied here...

... Upstream Oil & Gas borehole Modeling & Simulation different condition well logging variation log analysis detector gamma ray porosity spectra standard spectra elemental standard spectra spectrum hydrogen Weight Fraction elemental concentration standard spectrum...

...-detector spacing for maximum accuracy. The tool design comprises a 14 MeV neutron source, two gamma ray detectors and two fast neutron detectors. Counts ratios are used to establish a linear relationship with formation bulk density. This design yields an accuracy of 0.0147 g/cm 3 in shale-free formations...

... MDPN for GP evaluation also means this data can be used for other reservoir and well surveillance applications. burst ratio gamma ray pack evaluation Upstream Oil & Gas Completion Hardware instrument well logging borehole fluid pulsed neutron gadolinium measurement application...

... and limitations of this measurement while drilling (NGD) technique will be highlighted and illustrated in the paper. detector neutron-gamma density measurement formation evaluation well logging rhob crossplot gamma ray log analysis specification GGD measurement density measurement NGD measurement...

...Spectral Gamma Ray Abstract A case study is presented involving Noble Energy Mississippi Canyon Deepwater (DW) Gulf of Mexico frac packs performed over the last 5-years. This paper describes the role that proppant tracers and gravel pack (GP) logs played in improving operations, ensuring...

... Reservoir Surveillance Upstream Oil & Gas flow rate Modeling & Simulation drillstem/well testing viscosity production monitoring Drillstem Testing attenuation gamma ray liquid rate operation MPFM water cut energy level Multiphase Flowmeter phase fraction flowmeter...

...Pulsed Neutron Logging Technology Abstract The carbon/oxygen (C/O) method of pulsed neutron logging has been widely used since the mid-1970s for saturation monitoring in cased hole wells. C/O logging measures the ratio of gamma rays created by inelastic neutron scattering by carbon...

... prediction evaluation density tool coefficient Fixture Crossplot count rate detection operation interpretation abandonment frictional force detector count rate ratio cement gamma ray ultrasonic measurement barite tension prediction Introduction and Historical Overview Much...

... of operational benefits, measurement robustness, demonstrable accuracy, and auditability has improved their status from new, unproven technology to that of the premium mainstream metering option. With more than a decade of experience acquired using a combination venturi and gamma-ray multiphase flowmeters...