... regarded as the main storage unit. The primary goal of this research is to investigate numerically the effects of fractures and polymer gel treatment on oil recovery during waterflooding of artificially fractured core plugs. In this study, the MATLAB Reservoir Simulation Toolbox (MRST) was used...

... enhanced recovery drilling fluid chemistry formation damage drilling fluids and materials drilling fluid property upstream oil & gas drilling fluid selection and formulation sand pack core plug breaker drilling fluid formulation fluid loss control mechanism breakthrough...

..., was also investigated. acidizing materials and corrosion flowline corrosion Upstream Oil & Gas Subsurface Corrosion corrosion inhibitor Pipeline Corrosion riser corrosion metallic-based crosslinker viscosity measurement core plug crosslinked gelled acid crosslinker acid inorganic...

... the flowback processes after hydraulic fracturing operations. We perform a series of core flooding tests on core plugs collected from Midale tight carbonate reservoir to simulate fracturing fluid leak-off and flowback processes. First, we clean, saturate the plugs with reservoir brine and filtered oil...

...Zeta Potential XRD results showed that the sandstone core plug consisted mainly of quartz-SiO 2 , with appreciable amounts of siderite-FeCO 3 , microcline-KAlSi 3 O 8 , illite-KAl 2 (Si 3 Al)O 10 (OH) 2 , I/S mixed-layer clay-KAl 4 (Si, Al) 8 O 10 (OH) 4 .4H 2 O, and chlorite-(Mg, Fe, Al) 6...

... core plug formate fluid cryogenic sem image condensate reservoir formate drilling fluid Method Core and test rig preparation Introduction Cesium formate brines have a long and illustrious history of use as drill-in and open hole completion fluids for deep HPHT gas condensate wells...

...-permeability sandstone core plugs obtained from the productive Ness reservoir formation in the Huldra field were subjected to static and dynamic exposure to heavy formate drill-in fluids under HPHT reservoir conditions at 350 psi overbalance for a period of 296 hours. The cores were then exposed to short...

... of traditional mud acids and fluoroboric acid systems. A combination of X-ray Fluorescence (XRF) and X-ray Powder Diffraction (XRD) techniques were used to identify the mineralogy of Berea core plugs used in the coreflow tests. Coupled Plasma (ICP) technique was utilized to determine the concentrations of Si, Al...

..., return permeability figures and the length of time for the return permeability to reach steady state. Our study indicates that correlations between fluid loss filtration and return permeability are more evident in high-permeability core plugs using oil as the production fluid while correlations between...

... cores were available in well ‘X’; unfortunately none was from sandstone producing interval. As an analogy two core plugs from nearby well were sent for XRD analysis & core flow test was performed with specially designed organic clay acid for high temperature reservoirs (OCA-HT). Based on encouraging...

... kaolinite surfactant fines invasion wettability society of petroleum engineers critical velocity testing velocity testing permeability wellbore direction qualification flow rate fine migration core plug wellbore production well interpretation spe 168150 reservoir Characterisation...

... Upstream Oil & Gas flow rate formation damage core plug permeability Fluid Dynamics core permeability pore throat size distribution pipe dope dispersion flow in porous media dope concentration size distribution reduction dispersion Introduction It is a common practice to use pipe...

... characteristics were measured under axial flow boundary conditions for each drilling depth of the core. Further, multiple axial/radial core plugs were extracted and routine core analysis was conducted on these core plugs to measure the localized porosity and permeability. Subsequently, the experimental data...

... °API gravities. Experiments included acid flooding of core plugs that were saturated with different °API gravities. The extreme case included flooding the acid through tarsaturated plugs. The wormholes were characterized by CT Scanning. Differential pressures, number and sizes of wormholes...

... and acidizing in one treatment in carbonate formations. Core-flood testing was conducted to investigate the effectiveness of water shut-off gels before and after acidizing the core plug. Two scenarios were examined; the first one included pumping a cross-linked organic polymer gel to a carbonate core plug...

... filter cake spe 151837 rheology horizontal well core plug invasion drilling fluid property potassium acetate assembly carbonate expandable screen permeability Introduction This appraisal well is located in the Inhasso field in an inland basin of Mozambique. It would be the first...

... distributions and 1D NMR intensity profiles showed that core plugs exposed to the mud formulation with "depleted" bridging package experienced stronger alterations in NMR properties and deeper damage than the formulation with the "initial" bridging package. The methods used in this study have shown to have...

... and drying, core plug samples are typically saturated with simulated formation brine before synthetic or reservoir fluids to approach oil or gas saturation at an initial water saturation, S wi . Saturation may be established by an unsteady-state core flood displacement, by centrifuge, or by the porous plate...

... drilling fluids and materials laboratory test ess weave mud conditioning conditioning flowrate drilling fluid property Upstream Oil & Gas sand screen application drilling mud ess laboratory testing core plug fluid loss control brine cleanup plug installation breaker return...

... fluids to rock samples under conditions representative for the reservoir, drilling or well operations and production from the well. As part of a formation damage simulation a prepared core plug sample is exposed to a sample of the drilling or, in general, the well fluid under controlled pressure...