The work presents the investigation of fatty acids based ionic liquid as green corrosion inhibitors for C-steel in produced oilfield water. Different-chain length fatty acids C6, C12 and C18-1 are mixed with di-ethanol amine (DEA) to synthesize some ionic liquids and evaluated the corrosion rates on C-steel surface using weight loss method and potential time measurements. The prepared ionic solutions were shown to be effective in reducing the corrosion rates as sustainable corrosion inhibitors. The polar unit is indicated as the reaction center for the adsorption process. Generally, the inhibition efficiency increases with increase the inhibitor concentration.

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This work aims to activate a platinum electrode by repetitive cyclic electrochemical polarization of smooth platinum in alkaline solutions. The resultant modified electrode has been tested as an electro-catalyst for oxidation of candidate fuels, viz. methanol and ethanol. A comparison has been made between the two alcohols with regard to the kinetics of their electro-oxidation. The effect of several kinetic variables has been reported. The results reveal that the modified platinum electrode is a good catalyst for their electro-oxidation in alkaline media. The advantage of this surface is the inhibition of poisoning of Pt by CO intermediate. Change of charge density with number of cycles reveals the extent of increase of surfaces activation is due to increase of surface roughness. The onset potential for the electrooxidation of ethanol is less than that of methanol on the developed surface. Electro-oxidation in 0.05 M KOH is more feasible than in 0.1 M KOH possibly due to the less adsorption of the hydroxyl ion.

Fuel cell performance was studied with regard to alcohols electro-oxidation on modified platinum under different conditions such as temperature and modification time. This research is aimed to estimate each of cell voltages and power densities as a function of current densities and the other cell parameters. The electrochemical cells operated on the electrooxidation of methanol and ethanol in both HClO4 as an acidic medium and KOH as an alkaline medium. Applying the definition of electromotive force combined with Ohm's law on the oxidation reaction, power density curves are constructed. Optimum parameters for cell voltage and power density had been determined.

In deep wells and ultra-deep wells drilling beside the shores, the corrosion of drilling tools in oil fields is a common phenomenon. It is presumed that drilling corrosion loss of drill pipes scrap had accounts for a significant proportion of the entire cost of drilling. The most common way to control the corrosion in oil or gas wells is by chemically corrosion inhibition methods using inhibitors, which added to reduce the total drilling costs and enhance the drilling safety. In this research, we discussed the different effects of some new prepared cationic and non-ionic surfactants based on nitrogen and oxygen atoms as corrosion inhibitors additives for water-based drilling fluids. The corrosion rates were reported, the evaluation of water-based drilling fluids studied according to API specifications through the determination of rheological and filtration properties. The obtained results revealed that these prepared compounds regard as good corrosion inhibitors for the water-based mud.