... test was performed using vertical and decline (45° degree) aging cell. In addition, the effect of adding the new copolymer on the rheological properties and the electrical stability of the invert emulsion drilling fluid was evaluated. The results obtained showed that adding 1 lbm/bbl of the new...

... stability issues, stuck pipe incidents, and induced severe losses. Additional problems experienced while drilling include shale dispersion, resulting in fine solids buildup in the drilling fluid, and the adherence of shale to the drill pipe and bit, reducing penetration rates. The customized drilling...

... attention from the oil industry due to its potential applications. For example, metal based nanoparticles have been tested for a wide range of applications in the oil fields such as enhanced oil recovery, heavy oil recovery, drilling fluids, and wellbore stability to name a few. There are quite a few...

... by FTIR. The rheology properties of the separated categories are evaluated by static and dynamic rheology methods. The aggregation behavior and thickening mechanism of both molecular categories is analyzed by SEM intuitively. Emulsification performances are investigated by analyzing the kinetic stability...

... and conventional zwitterionic surfactants were synthesized and characterized by NMR ( 1 H and 13 C), FTIR and elemental analysis. The solubility tests were conducted for all gemini cationic and conventional zwitterionic surfactants. The heat stability was investigated by putting surfactants in an oven at 90oC...

... Amphoteric Betaine TBS 40 Experimental methods Compatibility test Salt and thermal compatibility tests of surfactant AES were conducted. The effect of NaCl on solution stability was tested for different surfactants. Compatibility of AES with other surfactants was also studied. Interfacial...

...) ( Navarrete et al. 1998 ). Used in the industry since the 1970s, emulsified acids have undergone many developmental processes from understanding the factors affecting their stability to trying to forming them from more convenient materials. One such study ( Sidaoui et al. 2016 , Sidaoui et al. 2017...

... when foams breakdown, thus fail to block higher permeability zones, and reduce the profile control effect ( Sun et al., 2016 ). Therefore, increasing foam stability has a great significance on oil recovery process. With the rapid progess in the theoretical model and experimental studies...

... of asphaltene. In this paper, three different asphaltene inhibitors were tested and investigated thoroughly with different concentrations for heavy Arabian crude oil. Several tests were performed: asphaltene inhibitors efficiency was tested using laser scanner analysis and asphaltene stability was investigated...

... of the commercially available emulsifiers are derived from Tall oil fatty acid (TOFA) which shows excellent emulsion stability even at harsh conditions. Our objective in this study is to make use of the huge quantity of used cooking/vegetable oil available in the kingdom and convert to an emulsifier suitable...

... as to traditionally used freshwater-based fracturing fluid. A HP/HT rotational rheometer for viscosity measurements was utilized to assess the stability of the fracturing fluid. Chlorous-acid-based breakers were also tested in the fracturing fluid at various temperatures to assess effectiveness of reducing fluid...

... such as low reservoir pressure, water-sensitive formations, and/or the need for shorten flowback period. Energized fluids have many challenges such as low stability at high temperature, high friction pressure during pumping, corrosion in the case of using CO 2 , and the need for specialized surface pumping...

... of tubing corrosion. The cost of HCl-emulsified acid could be lower by reducing the cost of either the surfactant (emulsifier) or the continuous phase (diesel). Hence, in this study, a low-cost, more efficient emulsified acid is proposed, with cheaper solid stabilizer (nanoparticle) instead of surfactant...

... viscosity. The use of nanoparticles to stabilize CO 2 /brine emulsion has the potential to mitigate the gravity override challenge in a CO 2 flood. Long-term stability of nano-particle stabilized emulsion is a critical factor in selecting the appropriate emulsifying agent. This work improves our...

... Abstract The successful drilling operation of oil and gas wells required high quality of drilling fluids which can stabilize well formations and able to withstand deep wellbore conditions of elevated temperature. Wellbore formations are mainly composed of shale (soft clay) and are likely...

... formulations under reservoir conditions. Results showed consistent colloidal and chemical stability of the NanoSurfactant formulations for over six months at 100°C. They reduced the seawater-crude oil interfacial tension (IFT) by two to three orders of magnitude or formed oil-in-water emulsions at 100 °C...

... indicate that the SC-CO 2 -foam can make strong and stable foams under certain conditions. This was also correlated with the images of the high pressure, high temperature (HPHT) foams that were captured through microscope at different time intervals and analyzed to indicate their stability. Two foaming...

.... Firstly, the suspension stability of the DVMFS was studied using TSI value measured by stability analyzer. The influence of surfactant concentration, polymer concentration and reservoir temperature was conducted. Then, the ability to reduce interfacial tension was measured using interfacial tensionmeter...

... of acid-to-oil. This paper reports results on the thermal stability and rheological properties of the HCl-waste-oil emulsion. All thermal stability experiments are conducted at a high temperature, 120 °C. The results show that the HCl-waste-oil emulsion is a shear-thinning fluid. Power-law model...

... Abstract Recent experimental studies on nanoparticles based enhance oil recovery (Nano EOR) have shown that silica nanoparticles have great ability to form Pickering emulsion, thereby increasing the ultimate oil recovery. However, the main challenge is to stabilize silica nanoparticles...