..., and the oil distribution evolution during gas displacement, could contribute to the development of shale oil. In this study, the one- and two-dimensional NMR spectra were used for the above studies. Two Gulong shale dry cores with different fracture bedding characteristics were tested in the experiments. NMR...

... upstream oil & gas rock type sedimentary rock clastic rock china government relative permeability saturation geologist asia government sandstone exhibition experiment conference software holder viscosity paper three-phase relative permeability spectra fluid dynamics geology flow...

... emission excitation wavelength corrosion management scavenger oilfield chemistry ppmv fluorescence hydrogen sulfide scavenger residual concentration reaction oiw impact ppmv condensate uv fluorescence spectra uv fluorescence emission Introduction Fluorescence spectroscopy initially...

... spectra bi 2 cnt wo 6 cnt composite pah wellbore design irradiation cnt photocatalyst photocatalytic activity organic contaminant Introduction To meet the ever-increasing demand for fossil energy, the commercial quantities of oil and gas exploration will bounce to about 64,500 by 2022...

... on T 2 domain only is long time neglected. This is because under wireline condition, formation gas is often flushed by mud filtrate and the formation oil can be mixed up with OBM signal. This study proves that LWD NMR, due to its logging while drilling features, enables the simple T 2 spectra...

... the dimensionality induced by various parameters and therefore proves an extremely useful tool handling large-scale problems that are very common in complicated downhole environment. The adjusted source distributions are then utilized to generate and validate spectra to be applied for difference logging scenarios...

.... The technique is sensitive to silicon both outside the screen and inside the annulus between the screen and tubing. The inelastic and capture spectra measured by the near and far detectors of the tool were used to derive further details on the sand distribution in the wellbore. The difference in depth...

... to the gas production. In this paper, to understand the pore structure of the effective unconventional gas bearing reservoirs, we review the microstructure of these three kinds of unconventional gas bearing formation, and compare the NMR T2 spectra at laboratory and field conditions. The results illustrate...

... Abstract In recent years, formation sampling and testing tools have provided a variety of new downhole optical measurements for downhole fluid analysis (DFA). DFA involves in-situ measurement of optical absorption spectra used to compute properties such as hydrocarbon composition and gas oil...

... by the wavelet transform. We have processed 42 models from an oil field in China using this method and subsequently have applied these rules to interpret their reservoir layers. It is found that identifications using the new method are in very good agreement with the results of well tests. energy spectra...

... well logging calibration internal environmental correction spe 80558 new carbon oxygen correction pileup test well amplitude calibration tool-specific linearity correction different tool si ratio spectrum linearity carbon oxygen spectra upstream oil & gas track show petroleum...

... al., 1993 ). In carbon-oxygen measurements, a gamma ray spectrometer measures the energy spectrum of gamma rays produced by neutrons from a pulsed neutron source. Responses of carbon and oxygen are obtained from analysis of gamma ray spectra produced during a short burst of high-energy neutrons...

... installation and operations invasion spectra asia government saturation figure 5 supplemental log curve Introduction Induced spectrometry logs are primarily used to determine oil saturation in reservoirs having connate waters of low or unknown salinity and to identify lithology in all types...

... ratio (SIR) derived from capture γ-ray spectra (gate C) acquired during the C/O log. The first is a measure of the formation capture cross section, and the second measures the ratio of the chlorine capture yield and the sum of the chlorine and hydrogen capture yields. The correlation between...