Publications Scientifiques
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Item Review of recent advances in polyethylenimine crosslinked polymer gels used for conformance control applications(Springer, 2019) Ghriga, Mohammed Abdelfetah; Grassl, Bruno; Gareche, Mourad; Khodja, Mohamed; Lebouachera, Seif El Islam; Andreu, Nathalie; Drouiche, NadjibItem Physico-chemical and rheological characterization of water-based mud in the presence of polymers(Springer, 2015) Safi, Brahim; Zarouri, S.; Chabane-Chaouache, R.; Saidi, M.; Benmounah, A.Under the geological conditions of wells and during the drilling operation, some of the water-based mud compositions are sometimes not effective for the drilling success of the oil wells (case of the oil wells in the south Algeria). For this, the aim of this study is to examine the influence of polymer types [carboxymethylcellulose (CMC) and polyanionic cellulose (PAC)] on the physico-chemical and rheological properties of water-based drilling muds. A mud samples were prepared with a polymers (PAC or CMC) according to mud formulations currently used in the wells drilling. The properties are controlled at such values that the mud provides optimum performance. For this purpose, the physico-chemical (pH, Pb: mud alkalinity) and rheological (apparent viscosity, yield point, and behavior rheological) were measured out on the studied muds. According to the obtained results, the rheological characteristics of studied muds (yield point and plastic viscosity) were clearly improved in the polymers presence. However, it should be noted that the PAC has given the better results compared to the CMC at a concentration of 8 g/l. By against in the temperature presence (hot rolling), the CMC is a good controller agent of mud filtrate compared to those containing the PAC for the same concentrationItem Synthesis and characterization of β-cyclodextrin-benzoic acid inclusion complex and grafting with cellulosic polymer(2012) Ghemati, Dj.; Aliouche, DjamelItem Rheological properties of sodium alginate solutions(Editions de l'Academie Republique Populaire, 2014) Belalia, F.; Djelali, Nacer-EddineItem Analyze and modelingofdamage behavior of a C0.12%Mn1.02%Si0.29% HLE steel solicited in selected physicochemical medium(Mohammed Premier University, 2015) Belahcene, B.; Benmoussat, A.; Mansri, A.; Doghmane, Mohamed ZinelabidineThe influence of environment and physical parameters on C0.12%Mn1.02%Si0.29% HLE steel steel corrosion damage behaviour in NaCl solutions was studied using weight loss, pH evolution at 300k to 370k, electro-exchanges, and passivity. Herein, the results show that the corrosion rate changes versus type of thermal treatment and cooling fluid, solution concentration, shape, size and cooling speed of the samples. The resolution of Nernst equation proves that the increase in temperature has a direct effect on hydrogen potential of the solution, current and corrosion potential of the metal. Moreover, the inhibition efficiency was determined by theoretical calculation using mechanical molecular and semi-empirical method. These results guided us to conclude that the inhibitor, which has low electronegativity than C0.12%Mn1.02%Si0.29% Steel has good efficiencyItem Synthesis and characterization of porous materials containing modified cellulose by β-Cyclodextrin for the application in processing industrial liquid waste(2009) Ghemati, Djamila; Aliouche, DjamelThe cellulose made up the principal structure of many plants. The content varies according to the vegetable species, from approximately 40% in wood, to 95-99% in cotton fibers. Several ways are possible to bring an additional function to cellulose: new fibers, modification of the fibrous structure, physical or chemical treatment by a surface treatment. And due to the contribution of functions, the formerly passive cellulose becomes active. Capacity of cyclodextrins to facilitate the inclusion of hydrophobic molecules, and others chemical derivatives like the dyes, can be exploited to obtain new porous materials modify with particular performances. In this work, a porous cellulosic material modifies was obtained by chemical modification and fixing of β-cyclodextrin on polymeric surface. The results were confirmed by infra-red analysis (FTIR) and scanning electron microscopy (SEM). The experiments of adsorption of balance of a reactive dye were made in aqueous solutions for 48 hours. Our results indicate the formation of a permanent chemical bond between the β - cyclodextrin and the fibrous material, and the modification is done without change of the polymer structure, the inclusion of the molecules of dyes in the cavity of cyclodextrin is due to the several interactions. The results of dye adsorption in aqueous medium show the aptitude of porous materials to fix the dangerous industrial dyes, and used in the processing industrial liquid wasteItem Shale problems and water-based drilling fluid optimisation in the Hassi Messaoud Algerian oil field(2010) Khodja, Mohamed; Canselier, Jean Paul; Bergaya, Faiza; Fourar, Karim; Benmounah, M. AbdelbakiDrilling fluid formulation and properties play a fundamental role in drilling operations. Clay minerals behave initially as a beneficial rheological adjuvant in drilling muds. Nevertheless, the contamination of oil reservoirs by clay minerals present in the drilled geological formation (shales) may generate major problems during drilling as plug formation. In this context, our study deals with the optimisation of drilling conditions in the Hassi Messaoud Algerian field. The mineralogical heterogeneity of this field is first discussed. The rheological and filtration characteristics of water-based muds with different polymer and electrolyte concentrations are investigated. The physical and chemical changes of both drilled formation and drilling fluid during the drilling process are studied. Therefore, depending on the clay present in the geological formation, an optimised drilling fluid system using a new filtration procedure is proposed. A good correlation is found between filtration/rheological properties and inhibition