Promotion effect of polymers and surfactants on hydrate formation rate

Karaaslan, U
Parlaktuna, Mahmut
The promotion effect of two polymers and three surfactants on methane hydrate formation was investigated in a high-pressure system. For all of the tested chemicals, 1 wt % aqueous solutions were prepared and methane hydrate was formed in those media to detect their effect on hydrate formation rate. It was determined that Igepal-520 is the most effective promoter on methane hydrate formation rate with respect to a reference test carried out by using only pure water.


Hydrate Inhibition with PEO (Poly 2-ethyl-2-oxazoline)
Bulbul, S.; Kadoura, A. S.; Merey, S.; Parlaktuna, Mahmut (2014-01-01)
This study is aimed at investigating the effects of a poly 2-ethyl-2-oxazoline-type polymer on the prevention of methane hydrate formation. During the study, seven experiments with low concentrations of poly 2-ethyl-2-oxazoline (0 to 1 wt%) were run in a batch-type reactor. The analysis of the experimental study indicates that poly 2-ethyl-2-oxazoline can be considered as a potential kinetic inhibitor for hydrate formation.
Influence of water vapour on high temperature oxidation of steels used in petroleum refinery heaters
Sultan, A.; Karakaya, İshak; Erdogan, M. (2012-02-01)
The oxidation behaviours of three different steels used in the construction of petroleum refinery heaters were investigated by thermogravimetric analysis (TGA) technique. C-5, P-11 and P-22 steel samples were tested in two different environments: air and CO2+2H2O+7.52N2, a gas composition which simulates the combustion products of natural gas, at 450 and 500 degrees C. P-22 steel had the best oxidation resistance at both temperatures in air. In CO2+2H2O+7.52N2 environment, the oxidations of all the steels w...
On the dissociation of natural gas hydrates from surfactant solutions
Karaaslan, U; Parlaktuna, Mahmut (2001-01-01)
Natural gas hydrates from different types and concentrations of surfactant solutions were produced and dissociated in a high-pressure cell. The Clausius-Clapeyron equation was utilized to derive the enthalpy related to the phase transition of the gas component from dissociation data. The results indicated that the phase change enthalpy of the nonionic surfactant solution hydrate is higher compared to that of pure-water and anionic surfactant solution hydrates. Experimental results also show that surfactants...
Experimental investigation of carbon dioxide injection effects on methane-propane-carbon dioxide mixture hydrates
Abbasov, Abbas; Merey, Sukru; Parlaktuna, Mahmut (2016-08-01)
In this research, first, hydrate with high saturation in porous media (sand sediments) was formed in fully filled high pressure cell by using a mixture of the following gases at 4 degrees C: methane (CH4), propane (C3H8) and carbon dioxide (CO2). The feed mole percent of the gases used was selected as follows: CH4 (95%), C3H8 (3%), CO2 (2%). This selection was made in order to form natural gas hydrate of thermogenic origin (sII type hydrate). Thereafter, CO2 injection into the high saturation hydrate media ...
Hydrate formation conditions of methane hydrogen sulfide mixtures
Bülbül, Sevtaç; Mehmetoğlu, Mustafa Tanju; Department of Petroleum and Natural Gas Engineering (2007)
The objective of this study is to determine hydrate formation conditions of methane- hydrogen sulfide mixtures. During the study, an experimental work is carried out by using a system that contains a high-pressure hydrate formation cell and pressure-temperature data is recorded in each experiment. Different H2S concentrations and both brine and distilled water are used in the experiments and the Black Sea conditions, which are suitable for methane-hydrogen sulfide hydrate formation are examined. Considering...
Citation Formats
U. Karaaslan and M. Parlaktuna, “Promotion effect of polymers and surfactants on hydrate formation rate,” ENERGY & FUELS, pp. 1413–1416, 2002, Accessed: 00, 2020. [Online]. Available: