... conditions. The obtained data were processed by compositional simulation to determine the diffusion coefficients. The diffusion coefficients measured for methane + hexadecane and methane + decane are in agreement with the existing literature data. For methane + live oil systems, however, the diffusion...

... Abstract We present two methods to measure contact angles inside porous media using high-resolution images. The direct determination of contact angle at the three-phase contact line is often ambiguous due to uncertainties with image segmentation. Instead, we propose two alternative approaches...

... are of lower quality, due to multiphase flow and possible tubing leaks. Converting flowing wellhead pressures to bottomhole pressures can be performed with a number of models, all of which assumes knowledge of the well production rate, which is usually determined with flowmeters or separators at the surface...

... Abstract Rock mechanics triaxial tests and well logs are the main source for determination of mechanical properties of reservoir. These methods obtain values for mechanical properties corresponding to parts of the formation close to the well area. The experimental approach is much more limited...

... the proposed method with a normal leakoff and homogeneous matrix permeability. The iterative method facilitates the determinations of fracture closure pressure without altering the characteristics of the subject reservoir. Abstract The instantaneous shut-in pressure (ISIP) serves as an indication...

... Abstract We introduce a new core analysis workflow for determining Resistivity Index (RI), Formation Factor (FF), and other petrophysical properties, directly from an "as-received" (AR) set of core samples. Unlike common practices that require lengthy core cleaning and wettability restoration...

... Efficiency algorithm Visualization architecture application tube wave Technology Conference determination oscillation period society of petroleum engineers operation interpretation transformation monitoring Industry and Demands The fracturing industry began in 1947 when the first...

.... Simulations will show how wellbore tortuosity can affect dramatically the fatigue life of mud motor and MWDs. By illustrating several common examples of fatigue influencers, engineers will be better equipped to determine the impact of different decisions on the potential motor and BHA fatigue. Better...

... recovery organic-rich shale Upstream Oil & Gas gas injection method recovery factor flow path region determination unconventional liquid reservoir experiment crude oil gas injection co 2 psig reservoir MMP gas injection experiment CT number Oil Recovery core plug tovar...

... for the determination of closure pressure, and have been implemented since the inception of hydraulic fracturing as a way to better design fracture treatments. These methods are prone to have subjectivity due to the experience and knowledge of the person analyzing the data, which calls for a need to more objectively...

... conditions, resistivity tools are used for determining the hydrocarbon saturation of the formation. However, when the wells are cased, conventional resistivity tools cannot be used due to the metal present in the casing. Consequently, for through-casing formation evaluation, pulsed neutron logging tools have...

... acting one should measure the pressure gradient on the capillary inlet and outlet. After pressure gradient stabilization its value might be applied for calculations. The fluid viscosity might be determined by Poiseuille's equation. t – time; V – specific volume of sampling chamber filled...

... minutes and FLID density was within 5% of fluid gradient. Similar results were obtained at the other sample points with pump out times of about 100 minutes. Abstract Deepwater turbidite reservoirs have always presented several reservoir characterization challenges. Determining the complex...

... Abstract The need for the estimation or evaluation Original Oil Water Contact (OOWC) prior to reservoir development is very pertinent to appropriate well placement within a reservoir. Oil and gas water contacts are determined via various sources including but not limited to Petrophysical logs...

... on PTSDS and other rock properties such as permeability (k), Flow Zone Index (FZI), Hydraulic Units (HUs), or reservoir quality index (RQI). In addition, PTSDS influences the shape of Pc curves. This research investigated correlations of Swir with k, FZI, HUs, and RQI and determined...

... ( Figure 2 ). Pressure Transient Analysis (PTA) PTA is an important issue for the reservoir dynamic characterization. Well testing provides the tools to have a reliable way to determine the main reservoir properties and to have a unique source of information that could investigate deeper...

... equations, the developed system converts the surface dynamometer card to a downhole dynamometer card, which can be analyzed to locate the travelling valve opening and closing points. With non-linear and unconstrained optimization, this technology can accurately determine the effective stroke and liquid...

... Abstract Accurate determination of organic-rich shale permeability is still a major challenge. Various methods have been proposed to measure the permeability on core plugs or crushed samples under various stress conditions using different fluids. Permeability obtained from core plugs...

... hydraulic fracturing falloff time fracture half-length determination Upstream Oil & Gas fracture design Soliman interpretation after-closure analysis reservoir permeability Economide permeability leak-off coefficient correlation Introduction Hydraulic fracturing is a procedure...

... The type of gas used in the laboratory tests determines the relative contribution of the various transport mechanisms and consequently the considerations of an appropriate modeling approach. For example, the phenomenon of molecular adsorption over the pore surface and swelling of kerogen...