.... The presented work demonstrates the exploration concept that led to reviving the drilling activity in this brown field and the first application for borehole imaging integrated with cased hole spectroscopy on the recent discovery well-X to select the best profitable perforation zones and update the geological...

... spectroscopy, nuclear magnetic resonance (NMR), array dielectric, and borehole images. Spectroscopy is not only utilized to estimate the mineralogy of the reservoir, but it also provides non-electric measurements, such as chlorine concentration and thermal neutron capture cross-section (sigma). The amount...

... total organic carbon (TOC) from spectroscopy measurements, hydrocarbon volume derived from dielectric and NMR logs were used for quick hydrocarbon bearing zones identification, decision making on fluid sampling and early determination of oil properties. The high-resolution NMR T 1 -T 2 maps, derived...

... drilling fluid chemistry drilling fluid management & disposal drilling fluid property carbon dioxide concentration filtrate interference spectra society of petroleum engineers sensor contamination regression vector spectroscopy chemical analysis MOC sensor Introduction Accurate...

... The Precision Elemental Spectroscopy (PES) tool described herein was designed and characterized to provide the best possible geochemical logging data to petrophysicists for interpreting the subsurface properties of the formation. A pulsed neutron generator (PNG) has been incorporated...

... is affected. To address this problem, a model for compensating for the variations of the shapes of standard spectra is proposed. A field example of pulsed neutron spectroscopy logging is illustrated to validate the proposed method and results show that the agreement between computed elemental weight fractions...

... that FNXS can be used together with TPHI as a sand-shale indicator. Spectroscopy of neutron-induced gamma rays provides information about the elemental concentrations in the formation minerals and fluids. The high-energy neutron interactions generate inelastic gamma rays. The inelastic gamma ray spectra...

... downhole fluid analysis sensor optical density spectroscopy contamination optical spectroscopy History and Evolution of Downhole Fluid Analysis The introduction of downhole fluid analysis (DFA) two decades ago was a major addition to the wireline formation testing suite of measurements...

... and a porosity log. The method is enabled by the recent development of a pulsed-neutron logging tool that combines inelastic and capture gamma ray spectroscopy measurements to provide a robust and accurate total organic carbon estimate. The method differs from the well-known approach of using carbon-to-oxygen...

..., each of these techniques has its own limits; Vitrinite reflectance measurement cannot be applied to marine shale and pre-Silurian shales lacking plant materials. T max measurement is questionable for mature and post-mature samples. Fourier Transmission Infrared Spectroscopy can be applied for both...

... with impurities increases the probability of error in the reconstructed data and results in poor rock characterization. This work combines ICP-OES (inductively coupled plasma optical emission spectroscopy) and LIBS (laser induced breakdown spectroscopy) analytical techniques to quantify the type and level...

... nuclear spectroscopy. The data from this well are used to demonstrate new methodologies to estimate the TOC content and Fischer Assay oil yield. The TOC content is estimated in three ways. The first is a multitool petrophysical evaluation. The second is an estimation of kerogen from the difference...

... in a reservoir precisely, by using Raman Spectroscopy. The number of such zones detected and the depth of their location can be used in planning of further waterflood or EOR process. The same tool has been described in the author's previous paper with respect to microbial detection by Raman Spectroscopy in order...

... and log responses. So estimations of shale/clay volume carry large uncertainties. For our purposes we will assume the minerals in the shale are the clay minerals, plus the same minerals that are in the adjacent "sand" seen by the ECS mineral model. With help from the integration of spectroscopy...

... spectroscopy provides elemental concentrations of major rock-forming elements; these can be translated into mineralogy and matrix properties such as matrix density and matrix capture cross section using well-established algorithms. The combination of continuous matrix properties from neutron capture...

... structure composition asphaltene inhibition mullin spectroscopy hydrate inhibition petroleum asphaltene asphaltene molecule upstream oil & gas remediation of hydrates wax remediation ring system paraffin remediation scale remediation molecule toluene production chemistry scale...

.../NIR) absorption spectroscopy is widely used to assist wireline fluid sampling today. Identification of gas, oil, and water is now well established. 1 Problematic OBM contamination is quantified during sampling jobs using build-up curves of spectral data. 2 , 3 Recent advances have enabled...

... Abstract Rapid petrophysical evaluation is critical in such expensive venues as the deepwater Gulf of Mexico. Recently, a real-time petrophysical analysis program was introduced based on the combination of elemental concentrations from spectroscopy and standard triple-combo logging 1...

... properties of hydrocarbons in Near-Infrared spectroscopy and principal component analysis techniques are used to obtain real time composition. This includes carbon dioxide concentration, Gas-Oil-Ratio, and water volume fraction as well as the relative abundance of three broad reservoir fluid pseudo...

... Abstract Near-infrared (NIR) spectroscopy is used to provide in-situ quantitative characterization of reservoir fluids during wireline sampling using five representative composition groupings (C 1 , C 2 –C 5 , C 6+ , CO 2 , and water). This information is vital for the proper execution...