... and some more shaly sections. Density, Neutron, Compressional Slowness, Gamma Ray, Shallow and Deep Resistivity logs, Caliper and True Vertical Depth Sub Sea reference were selected for Machine Learning assisted logs editing algorithms testing. Data Load and Preprocessing Before starting...

... Neutron logging is well-established technology used in the oil- and gas industry today primarily for the determination of formation water saturation, but also for detecting oil/gas and to perform formation characterization in combination with other logs ( Rider and Kennedy, 2011 ). Abstract...

... in this paper were assessed in cased hole conditions. In this paper, we present a solution that cover tight matrix and natural fractures assessment, at a level not previously achieved. At the tight matrix level, we carry out advanced nuclear spectroscopy with a new pulsed neutron device, that carry out...

... A compact neutron monitor (CNM), which is a diamond-based neutron detector is primarily sensitive to high energy neutrons and has a low sensitivity to gamma rays and low-energy neutron. It is placed very close to the high-output PNG to provide an accurate and precise measure of the source output...

... Abstract Two innovative characterization techniques, Small Angle Neutron Scattering (SANS) and High Resolution Fast X-ray Micro-tomography on a Synchrotron, have been combined to usual coreflood environments and X-Ray CT Scanner measurements in order to describe the texture of a foam flowing...

..., Er, Tm, Yb and Lu), Yttrium (Y) and Scandium (Sc), which often occur together ( Chakhmouradian et al., 2012 ). Certain rare earth elements have extremely high thermal neutron capture cross-sections; and this presence can be an important and overlooked contributor to the neutron processes affecting...

... Abstract Pulsed neutron logging is currently the most commonly used technology for cased hole formation saturation analysis, providing data for reservoir monitoring and management. The common pulsed neutron log measurement is the formation capture cross section (Sigma). The data can be logged...

... technology executed in more than 1,000 wells all over the world and a first two successful trail case study from ADNOC Onshore wells in the Middle East. The main objective is to acquire triple combo data (resistivity, density, neutron, gamma ray, spectral gamma ray & caliper) using the LWT conveyance...

..., oxygen activation logs, X-Ray measurements, Gamma-Gamma density measurements, Neutron-Neutron logging, and fiber-optic measurements. Technology trends in cement logging tools suggest that acoustic measurements such as pulse-echo and flexural measurements may be the leading techniques for cement job...

... In the 1990s and 2000s the service industry significantly enhanced the characterization of casedhole logs and introduced several additional measurements to the logging suite such as fullwave compressional and shear sonic logs, density log, epithermal neutron porosity log, and resistivity through...

... & scheduling Upstream Oil & Gas Artificial Intelligence porosity cementation factor estimation well logging good agreement transition zone correction SHF case study field development planning initial water saturation society of petroleum engineers sensitivity analysis neutron Swirr...

... Abstract Accurate formation evaluation relies heavily on the quantification of rock matrix constituents. Rock mineralogy identification is commonly based on wireline spectroscopy measurements. Logging while drilling (LWD) techniques traditionally rely on density and neutron data to derive...

... Abstract Managing mature fields requires monitoring changes in formation fluid saturations as well as production from individual wells effectively and efficiently. Reservoir saturation monitoring is usually performed using slim pulsed neutron logging (PNL) tools because they can be deployed...

... Abstract Pulse neutron capture (PNC) is an effective technique to monitor lateral and vertical saturation/sweep. Assessing pulsed neutron results in either open-hole (OH) or cased-hole (CH) is key in evaluating formation properties, while with reservoir performance routinely monitored, time...

... of investigation that is less affected by standoff and a driller-friendly BHA free from stabilizers. Based on the evaluation of offset data, which indicated excellent correlation of sonic vs. density/neutron measurements, we decided to provide shear porosity in real time owing to the sequence stratigraphy...

... a simple and cost-effective approach for better identification and evaluation of low resistivity pay carbonate reservoirs. The approach utilizes the pulsed neutron capture log (PNCL) in real-time logging in proper identification and formation evaluation in these reservoirs through case studies...

... Abstract Conventional petrophysical models, e.g. using neutron-density cross-plot for lithology and porosity and Archie's equation for water-saturation, can be adequate for evaluating clean sands, which have null or minimal shale and clay. Moreover, routine core analysis can be enough...

... machine learning calculation shale spe 88685 artificial intelligence reservoir rock well logging resistivity saturation posterior probability uncertainty distribution bayesian inference likelihood track show fraction neutron inversion posterior distribution log analysis upstream oil...

... a cased-hole neutron porosity, and can therefore be used for gas evaluation. This paper presents a new technique to simultaneously use carbon/oxygen ratio, capture cross section and TDT/RST porosity for evaluating the respective saturations of oil, gas, fresh water and saline water when they are found...