Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 20 of 28 for “"core flooding"”.
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EVALUATION OF NOVEL PREFORMED PARTICLE GELS FOR CONFORMANCE CONTROL AND ACID STIMULATION THROUGH CORE FLOODING TESTS
… water and can self-degrade in 10% HCl at 80 °C. Core flooding reveals that DPPG can serve as an excellent diverter for acid stimulation while it has very little damage to matrix after degradation.</p> <p>For RPPG, this study evaluates the fiber types and concentrations, swelling ratio, and …
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Monitoring microseismic activity in core samples encased in core flooding apparatus subjected to confining and pore pressures
… events emanating from rock samples tested in the core flooding apparatus at the Illinois State Geological Survey (ISGS) laboratory. Several types of sandstone and PVC core samples with various treatments were prepared and evaluated. These samples were subjected to loading/unloading patterns of …
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Plugging performance of preformed particle gels in fractures and its influencing factors
… of conventional PPG was investigated using core flooding experiments conducted partially open fractures. The plugging efficiency of PPG was revealed to be greater in this specific type of fractures than the treatment conducted in fully open fractures. Second, supplementary core flooding …
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Evaluation of Low Saline “Smart Water” Enhanced Oil Recovery in Light Oil Reservoirs
… is now on EOR techniques. Low saline water (LSW) flooding is a type of EOR that has gained immense attention among researchers due to its ease of use, lower cost, and environmentally friendly nature. Previously, researchers have focused on the quantity and compatibility of water to be injected, …
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CO2-rock interaction during CO2-enriched brine injection into storage reservoirs using NMR integrated with fiber optic sensors
… any CCS project, and are commonly measured by core flooding experiments using nuclear magnetic resonance (NMR). However, NMR is not capable of measuring rock deformation caused by fluid migration. Therefore, the evaluation of the rock sample surface deformation during core flooding has been …
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Effect of halite (NaCl) on sandstone permeability and well injectivity during CO2 storage in saline aquifers
… were carried out in three distinct parts: (i) core flooding tests for different sandstone core samples (Bentheimer, Castlegate and Idaho Gray) which were saturated with different brine concentrations to measure the CO2 flow rate for different injection pressures, (ii) utilising simulated …
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Surfactants and enhanced oil recovery
… as 10-2mNm-1 have been subsequently optimised. Core flooding tests carried out under reservoir conditions produced an additional 20% of the original-oil-in-place.
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Role of connate water salinity in gas dispersion during enhanced gas recovery by carbon dioxide injection and sequestration
… investigation, three (3) different sandstone core samples (Grey Berea, Buff Berea, andBandera Grey) with different petrophysical properties were used in this research. Phase I ofthis study entailed the cleaning and the characterisation of the core samples usingexperimental core analyses to …
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Synthesis and comprehensive studies of nanogels for enhanced oil recovery
… reduce the permeability of porous medium. The core flooding results demonstrate that nanogels with proper charges can easily transport through the porous medium and reduce the water permeability by forming multilayer adsorption on the rock surface. The residual oil was produced in o/w emulsion …
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Relative Permeability Experiments of Carbon Dioxide Displacing Brine and Their Implications for Carbon Sequestration
… brine in porous media. A laboratory-scale core flooding reactor has been built to measure flow properties at in situ pressures, salinities, and temperatures. The reported set of experiments was designed to measure CO 2 relative permeability for CO 2 displacing brine at residual brine …
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Geomechanically coupled modelling of fluid flow partitioning in fractured porous media.
… evaluated using a set of published laboratory core flooding data. The best fracture simulation approach was identified to be fracture implementation as an open channel interacting with matrix block. This approach takes into consideration the coupling of Darcy flow equation in the matrix domain …
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Surfactant-free Aluminum Silicate-based Nanofluids for Enhanced Oil Recovery from Austin Chalk Carbonate Reservoirs
… to brine for their EOR efficiency in carbonate cores. The EOR performance was investigated by interfacial tension (IFT), contact angle, spontaneous imbibition, and displacement tests. The results showed that compared to brine alone, nanofluids could notably alter the rock wettability from …
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Role of sulphates and chloride ions in improved oil recovery in a hybrid smart-low salinity flooding technique
… and wide scale applicability is Low salinity flooding, which is characterised by many mechanisms including fine migration, electrical double layer expansion, multivalent ionic exchange, and micro dispersion. Despite much research on theses mechanisms, sulphate ions facilitate the fine …
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Investigating the use of different types of sealant materials for cement remedial applications
… cement's flaws, in the lab, by using cement cores flooding experiments. Two approaches will enable these objectives: 1) performing intensive laboratory measurements to investigate the rheological behavior and mechanical properties of the particles gel and epoxy sealants 2) conducting …
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Experimental study on enhanced oil recovery (EOR) mechanisms of nanogel combining with low salinity water for carbonate reservoirs
… temperatures, and brine salinities. The core flooding experiments have indicated the residual oil can be fragmented and produced out in oil-in-water emulsion. This shear-induced emulsification property denotes nanogel can significantly improve oil phase mobility, especially for heavy oil. …
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Investigation of Recrosslinkable Preformed Particle Gels for Natural Gas Conformance Control
… feasibility of using this product to improve gas flooding conformance for mature reservoirs with conduits or fractures. Two RPPG systems were used for the experiment: a CO<sub>2</sub>- resistant RPPG (CR-RPPG) synthesized using acrylamide (AM) and 2-acrylamide-2- methylpropane sulfonate acid …
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Factors impacting the transport and enhanced oil recovery potential of polymeric nanogel in sandstone
… potentials. First, 240 published nanoparticle core flooding experiment data were collected and analyzed about the extent to what the nanoparticles can improve oil recovery. Results show that on the laboratory scale the incremental oil recovery could be as high as 30% of the original oil in …
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Nanoparticles for Oil Dispersants and Nano Tracers
… charged carbon nanoparticles in porous rock cores was also examined using single phase core flooding experiments and 1-dimesional convection-dispersion equation. Temperature dependence of transport parameters such as dispersion coefficients and retardation factors were evaluated. The …
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Evaluation of alkali flooding combined with intermittent flow in carbonate reservoir
… pausing period is then combined with alkali flooding (combination technique) to increase the wettability reversal mechanism and as a consequence, oil recovery is improved. The aims of this study are to evaluate the efficiency of the combination technique and to study the parameters that …
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Investigating the effect of perforation diameter and carbon dioxide bubble size distribution on heavy oil recovery
… Oil Recovery (EOR) process is chemical flooding. However, the formation of brine with high salinity and divalent ions leads to process inefficiencies. In this study, experimental techniques have been developed to examine the effect of perforation diameter and CO2 bubble size distribution …
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