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gas-flotation
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Design & Manufacture of IGF/DGF Plant in Semi Industrial Scale for Wastewater Separation
, M.Sc. Thesis Sharif University of Technology ; Ghotbi, Siroos (Supervisor)
Abstract
The increasing demand for energy forced to production of oil as one of the main sources of energy. Along with the increase in oil production, the proportion of water produced with oil is increasing relative to the oil produced. On the other hand, environmental restrictions for the discharge of industrial effluents into the environment are becoming more and more stringent every day. Before discharging the effluent into the environment, petroleum must be removed. The complexity of these issues demonstrates the need to develop new technologies and improve the efficiency of existing technologies. Gas flotation are among the technologies adopted in the field that have been used throughout the...
The effect of temperature and impeller speed on mechanically Induced Gas Flotation (IGF) performance in separation of Oil from oilfield-produced water
, Article Petroleum Science and Technology ; Volume 28, Issue 14 , 2010 , Pages 1415-1426 ; 10916466 (ISSN) ; Borghei, S. M ; Nadim, F ; Roayaei, E ; Sharif University of Technology
2010
Abstract
The effect of temperature and impeller speed on the performance of induced gas flotation (IGF) systems for the removal of oil from produced water in different ranges (5-300 g/L) of total dissolved solids (TDS) was investigated in a pilot plant study. Furthermore, it was evaluated whether the IGF pilot plant effluent could reach the 15 mg/L outlet oil content as required by Article VI of the Kuwait Convention for Persian Gulf region, before being discharged to the sea. The results showed that oil removal efficiencies up to 90% could be reached at high temperature (80°C) in just one single flotation cell without adding any chemicals. Flotation unit, however, should be followed by at least one...
Evaluation of the Impact of Rock Heterogeneity on the Efficiency of Engineered Salinity Water Flooding
, M.Sc. Thesis Sharif University of Technology ; Mahani, Hassan (Supervisor) ; Ayatollahi, Shahaboddin (Supervisor)
Abstract
Low salinity water flooding (LSWF) is one of the enhanced oil recovery (EOR) methods that can be applied in both secondary and tertiary recovery techniques. Some reports indicate no incremental oil recovery associated with this method, and the reason can be associated with the binary and tertiary interactions between oil-brine-rock (OBR) systems. In some OBRs, the initial conditions are not favourable in terms of initial wettability. One of the key factors is the local rock heterogeneities in permeability and mineralogy which can affect LSWF performance because the microscopic and macroscopic heterogeneities can impact the flow pattern of the injected water, oil displacement efficiency, and...