... hydrolyzed polyacrylamide (HPAM)-based polymers is often compromised in high salinity and high temperature (HSHT) environments due to degradation. This research investigates the synthesis and characterization of novel polymer-nanoparticle composites for enhanced oil recovery applications in high-salinity...

... such as temperature, salinity, and retention on the oil recovery. In this study polymer flooding performance is visualized and quantified visualized and quantified at micron resolution using advanced imaging and image analysis techniques. The optimization of polymer injection for an Omani oil field was achieved...

... of functionalities, accurately portraying polymer viscosities under varying salinities and polymer concentrations, capturing non-Newtonian behavior, and accounting for phenomena such as adsorption and permeability reduction. Particularly, both UTCHEM and MRST simulators exhibit remarkable capabilities in handling...

... for high salinity PW treatment with high oil removal efficiency, short treatment time and low chemical dosage. High salinity produced water (HSPW) and low salinity produced water (LSPW) with salinity of 102,290 mg/L and 65,680 mg/L, respectively, were used in this work. Three flocculants were tested...

... no significant salinity, is benchmarked against conventional high salinity injection water. Such a study is essential to promote produced water reuse in waterflooding projects and achieve improved oil recovery. A detailed characterization of interfacial properties as well as static and dynamic oil recovery...

... Abstract Low salinity water (LSW) flooding, as a wettability modifying agent, is observed as one of the viable technologies for improving oil recovery in carbonates, owing to its low cost, low carbon footprint and effectivity. However, the optimum salinity (i.e. dilution factor) and wettability...

... Abstract Using high-salinity effluent water for polymer flooding is a strategic endeavor to mitigate water-handling constraints and debottleneck oil production. This study sheds light on the workflow that was adopted to select appropriate polyacrylamides with AMPS/ATBS monomers to improve...

... freshwater intake for their operations by increasing recycling capacity. Reusing high salinity water for hydraulic fracturing and polymer flooding applications is a challenge as high salinity water negatively impacts the economics and success rate of these treatments as the apparent viscosity of standard...

... Trapping Mechanism Approach The solubility trapping approach is based on the common method of multi-component solubility in water, taking into account reservoir temperature and formation water salinity. This method is implemented using Henry's solubility law ( Nghiem 1986 , and Harvey 1996 ). CO2...

... solution. Until now, those observations were made in bulk conditions but the assessment of this behavior has not been studied in confined and under flow conditions. Three SP compatibility cases were selected using the same SP formulation and playing on the brine salinity (low, medium and high). Bulk...

... measurements, and coreflood experiments. The effects of water salinity, HGPS concentrations, pH values and temperature on examined HGPS properties were investigated. The HGPS concentrations examined in this study ranged between 0.3 to 2%, while water salinity ranged from 20,000 to 250,000 mg/L of NaCl...

... souring would be high in the S and T fields when injecting low-salinity Fars-aquifer water. In the Worst-Case Scenarios, the gas-phase H 2 S concentration attains max values of 3,400 and 1,200 ppmv, respectively, for the S and T fields. Analysis of the microbial-souring mitigation options suggest...

... Abstract Past laboratory experiments have shown Low Tension Gas (LTG) floods to be a promising tertiary oil recovery technology in low permeability and high salinity carbonate reservoirs. Gas availability and cost are the major challenges in applying this technology under field conditions...

... Abstract The paper presents the development of new surfactant formulations composed of various low-cost and low-performance surfactants to make them high performance products for high temperature and high salinity carbonate reservoirs. The objective of this study is to optimize the surfactant...

... rock upstream oil & gas adsorption salinity hardness salinity gradient Introduction After many years of stagnation, chemical EOR appears to be slowly taking off, with not only several large scale polymer flood expansions but also several technically successful surfactant pilot projects...

... Abstract The effect of kaolinite fine particles migration and wettability alteration during low salinity water-flooding (LSW-flooding) has been investigated for Omani sandstone reservoirs. Water flooding by re-injecting the reservoir brine is currently operated in the subjected Omani oil fields...

... Abstract Polymer flooding projects require hundreds of ppm of polymer (often HPAM) to viscosify the injection water. It is well known that the required dose of HPAM to obtain a targeted viscosity will decrease by reducing the salinity of the inlet water. When the water salinity is low enough...

... Abstract Low salinity polymer (LSP), in which the salinity of the make-up water is significantly lower than of the formation water, is an attractive alternative to conventional polymer flooding because of the reduced amount of polymer required. Viscosity loss due to cation exchange...

.... The current insight on the potential of hybrid low salinity water and polymer flooding in the Greater Burgan is presented. The goal of the Greater Burgan Study team in this enhanced oil recovery (EOR) evaluation program was to compare the benefits of using low salinity waterflood (LSW) and low salinity...

... in fractures on the one hand while allowing low interfacial tension (IFT) solution to enter the matrix on the other hand. We use an extensive experimental workflow to develop such solution in the challenging salinity conditions of the considered reservoir. Using robotics, we first combine low-IFT and foam...