... dielectric data are measured on clean outcrop core samples of both carbonate and sandstone. The data are analyzed by using the traditional dielectric interpretation models assuming that m equals to n i.e., considering matrix and hydrocarbon as one phase and water as the second phase, the MN approach...

.... Toluene cleaning through Soxhlet impacting the final saturation results from coring. In extraction. The core sample is placed inside a particular, we analyze the uncertainty involved in Soxhlet extraction device to be boiled under the deriving these saturations using both deterministic toluene solvent...

..., it has been shown that a significant portion of this void filled porosity is occupied by formation water at reservoir conditions. The discussion below will show several experiments validating this idea including: comparisons between preserved and non-preserved core samples, re-testing old core to measure...

... on these challenging wells. The improvements include: - 1.5-in. diameter core samples, on a 35,000-psi tool - New high-powered coring tools with significantly more power for cutting Lower Tertiary well cemented rock (Wilcox, etc.) - Higher torque and horsepower at the bit - High-powered surface systems and high...

... Artificial Intelligence well logging log analysis NMR measurement gravimetrically rock type Brine assessment Symposium electrical resistivity wettability index water saturation level resistivity measurement core sample interpretation wettability Upstream Oil & Gas water...

... reservoir is difficult, it is imperative to do so (Akbar, et al., 1995). Most laboratory methods are destructive in nature and render sample cores as unusable. On the other hand, DRP method works on the scanned images of a whole core. The workflow of DRP involves, first imaging the core sample followed...

... significant challenges originating from uncertainties in the acquired data, assumptions used to interpret these data and more broadly, due to increased relative uncertainty associated with tight, low-porosity formations. For example, the crushing of the core samples, which is required for efficient fluid...

... and capillary effects which are commonly present in low-porosity and low- permeability core samples. The objectives of this paper are (a) to compare unsteady-state and steady-state methods (stationary liquid) using two desaturation techniques, porous-plate (high pressure membranes) and centrifuge desaturation...

... and micro porosity cutoff values of core samples, 600 ms and 100 ms are the mean cutoff values. Plotted in Figure 1 are the cutoff values that should be SSS SPWLA 60th Annual Logging Symposium, June 15-19, 2019 2 used in order to match the NMR T2-derived macro and micro pores, respectively...

... very small volumes of fluids and solid hydrocarbons in tight rocks. Previous work has revealed that one-dimensional (1D) NMR T2 method is insufficient to study organic matters in fresh core samples due to overlapping T2 signals from both hydrocarbons and water. Co-existence of structurally bound water...

... verify the reliability of the introduced workflow, we chemically alter the wettability of core samples to be water-wet, mixed-wet, or oil-wet. We confirm and quantify the wettability level in each core sample using the Amott Index and contact angle measurements. Using a low-frequency 2-MHz NMR...

... core samples covering a wide range of complexity in pore structure. We altered the wettability by injecting a surfactant solution into the cores using a core-flood setup. Some samples were also injected with decane and aged in decane to become mixed/hydrocarbon-wet. To measure the wettability...

... not be available depth-by-depth in the formations with significant spatial heterogeneity. In such cases, all these semi- empirical models given by Equations 4 to 7 are ultimately reduced to particular instances of Equation 3. When core samples are available for calibration, the porosity-permeability correlations...

... established in the API RP-40 standards, did not completely clean all fluids from these core samples. To confirm this assumption, the laboratories made native state 2D NMR measurements on core plugs before the plugs were subjected to a Dean-Stark cleaning process. The measurements were repeated at the end...

...-While-Drilling (LWD) triple combo and NMR T2 relaxation data were acquired while drilling. Core samples were taken in the target sands and conventional core analysis was performed. We characterize the pore geometry variations by classifying core samples into a number of petrophysical rock types using...

... of art high frequency NMR core analysis techniques are used in two ways in order to study petrophysical and petrochemical properties of unconventional core samples: (1) static measurements to quantify liquid porosities, liquid saturations, and solid/immobile organics; (2) dynamic measurements under...

.... SPWLA 58th Annual Logging Symposium, June 17-21, 2017 4 Figure 3 is a crossplot of PE values from the litho- density log vs. PE values computed from the ICP elemental concentrations. Agreement between the two values is quite good among core samples tak- en from the deep Cotton Valley limestone (PE...

... ABSTRACT The process by which fluid is lost from a core during retrieval to the surface by hydrocarbon expansion in tight rocks mimics hydrocarbon production under depletion drive in these reservoirs. Therefore, a comparison of hydrocarbon saturation in situ with that of a core sample...

... depletion and production forecasting. Collecting core samples from the reservoir is one method to obtain important reservoir properties; however, limitations and uncertainty can result from the methodology routinely applied for reservoir core sample recovery. The significant loss of reservoir fluids (Botset...

... is important for geomechanical evaluation in organic-rich mudrocks. reservoir geomechanics organic-rich mudrock well logging Engineering log analysis elastic stiffness coefficient anisotropic elastic property Symposium core sample Haynesville stiffness coefficient volumetric concentration...