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Article
Effect of Surfactant Additives on Phase Inversion in Oil-Water Pipe Flow System

Authors: A.A. Alwasiti --- N.M. Farhan
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2017 Volume: 35 Issue: 2 Part (A) Engineering Pages: 106-110
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

This research investigates the effect of surfactant additives on phase inversion point in the oil-water flow in horizontal pipe. Two types of surfactants were used in the experiments; anionic type (sodium lignosulfonate (SLS)) at 200 ppm and cationic type (hexadecyltrimethyl ammonium bromide (CTAB)) at 100 ppm. The experiments were carried at mixture velocities (0.8, 1, 1.9 and 2.3) m/s. The results showed that the phase inversion points are unaffected by surfactant addition or velocity at low mixture velocities while they shifted downward at high mixture velocities. The experiments show also that anionic surfactant addition caused a forward shifting in phase inversion point and downward shifting in the addition of cationic surfactant at high mixture velocities.


Article
Improving Drilling Fluid Properties by Using Nano-Additives

Authors: D. Mahmood --- N.S.AL-Zubaidi --- A. A. Alwasiti
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2017 Volume: 35 Issue: 10 Part (A) Engineering Pages: 1034-1041
Publisher: University of Technology الجامعة التكنولوجية

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Abstract

Nanotechnology is one of the most important techniques in recent days. Using Nano-additives to improve drilling fluids properties in order to meet the modern drilling process requirement is still being debated till date. In this study, three Nano-materials (magnesium oxide MgO, titanium dioxide TiO2 and Graphene) were used to improve the rheological and filtration properties as well as Clay Yield. The weight of Nano-materials were (0.02, 0.05, 0.2, 0.5, 0.8) gm. The results showed that the rheological properties were the same with Graphene and TiO2, while MgO gave the best results of rheological and filtration properties and with a higher values of yield point and gel strength. The higher value of Clay Yield obtained by0.2wt % (0.8 gm) of MgO was (173bbl/ton) while TiO2 and Graphene gave the same values (124,126 bbl/ton) respectively.

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