چكيده به لاتين
Now adays, oil is produced cheaply and quickly and resources that are produced naturally and economically are declining, with the development of nanotechnology, it has become clear that this science is capable of solving many problems in the oil and gas industry. On the other hand, the reduction of the exploration of new resources and increasing demand, it is necessary to optimize the production of heavy oil resources with the help of enhanced oil recovery. Most of the oil reservoirs contain heavy oil, the production of which will always be associated with problems. The purpose of this study is to use the unique properties of nanofluids to reduce the interfacial tension of heavy oil, so that reducing the interfacial tension can cause better movement of oil in the reservoirs and, As a result, Enhanced Oil Recovery from the reservoir. In this experiment, initially ore powders were milled using the NARYA MPM 4 * 250 planetary ball mill and converted to nanoscale. Then, by modifying the surface of nanoparticles and proper fluidization, the effect of nanoparticles on reducing interfacial tension in order to Enhanced Oil Recovery on heavy oil in the stable western field with density and viscosity 212 at ambient temperature was investigated. For this purpose, using these nanoparticles, nanofluids with different concentrations were prepared and injected into heavy oil and also the effects of surfactant CTAB and SDS without the presence nanofluids and the effects of surfactant with nanofluids on interfacial tension were observed and measured. On the other hand, important factors such as pH and salinity and preheating on interfacial tension were observed. In addition, water and oil interfacial tension was measured to be as reference without using nanoparticles. 20 wt % of nanofluid with surfactant CTAB fluidization and in distilled water was dissolved and its interfacial tension 2.45 was reported. at the end the stability of nanofluids were measured 31days after they were prepared and the results showed that nanofluids contain nanoparticles don’t lose their stability. The mineral nanoparticles were characterized using XRF, SEM, EDX, FTIR analysis and it was found that the properties of nanoparticles are also stable after grinding.
