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Register a new userA Study of the Corrosion Compounds on the Syrian Oil Pipelines Buried in Soil
دراسة مركبات التآكل على سطح انبوب نقل النفط السوري المغمور في التربة
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فراس صالح( باحث )
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عادة ما تحمى أنابيب النفط و الغاز المطمورة بالتربة، بوساطة طبقة ثخينة من مواد عضوية بوليميرية، و يكمّل هذا الأجراء بحمايتها بنظام الحماية المهبطيه. تسمح هذه الحمايات المضاعفة بحماية انابيب النفط و الغاز من التآكل. و لكن بالرغم من كل هذا، فإن وجود انابيب النفط و الغاز القريبة من مصدر الحقول الكهرومغناطيسية، مثل خطوط التوتر العالي فإن عملية التآكل تحصل في الشقوق و الثقوب الناشئة على طبقة العزل، تدعى هذه العملية التآكل بالتيار المتناوب (AC Corrosion). يتأثر هذا النوع من التآكل ببعض البارامترات مثل مطال التيار المتناوب المحّرض على سطح المعدن ، بالإضافة الى شدة تيار الحماية المهبطيه المطبق، و كذلك دور التربة و نوعها. تمت دراسة هذا النوع من التآكل نظريا و عمليا باستخدام قطع من الفولاذ الكربوني المستخدم في الصناعة النفطية. و استخدم محلول يحاكي التربة التي يطمر بها هذا الانبوب، و درست هذه الظاهرة من خلال تجارب عدة. تم تحليل مركبات التآكل الظاهرة على سطح المعدن، و أظهرت ان تواتر 50Hz يمكن ان يكون سريعا جدا بالمقارنة مع زمن حدوث التآكل الطور الموجب و السالب بالنسبة للتيار المتناوب و أظهرت النتائج التي تم الحصول عليها وجود تأثير هام لمطال التيار المتناوب المحّرض و مقاومة التربة.
Oil and gas buried pipeline are usually protected by a thick organic coating and supported by a cathodic protection system. The protection process allows the pipe line protection against corrosion; however, corrosion is taken place in the cracks and holes of insulation coating due to pipelines adjacency to electromagnetic fields. The process is called AC corrosion affected by some parameters such as AC induced amplitude, cathodic current protection and soil type. This corrosion was theoretically and practically studied by using carbon steel pieces. In addition, a solution stimulating the soil where the pipelines are buried was used. This phenomenon was studied through several experiments. Corrosion compounds were also analyzed. The results revealed a significant effect of AC induced amplitude and soil resistance. It has been also shown that 50 Hz frequency can be very quick in comparison with corrosion occurrence time at each positive or negative AC current phase.
References used
ADEL,A,Corrosion and its Protection Methods,2010.651
IBRAHIM, I., BERNARD ,T., HISASI,T, MICHEL,M. AC-Induced Corrosion of Underground Steel Pipelines. Faradaic Rectification under Cathodic Protection ,2015
I. IBRAHIM, M. MEYER, B. TRIBOLLET, H. TAKENOUTI, S. JOIRET, S. FONTAINE AND H.-G. SCHÖNEICH, On the Mechanism of AC Assisted Corrosion of Buried Pipelines and Its CP Mitigation,2008
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Corrosion is the most important problem in the process of oil production, Its results are: sudden fracture, high economic cost and great loss in oil equipment. Appropriate solutions have been suggested to extend the life of facilities, and to avoid c
orrosion phenomenon which may get the facility out of service, But, finding the main
reasons causing this phenomenon, and studying the factors that contribute to increase or reduce the spread of corrosion requires more urgent attention.
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samples in different protections ways, protection paint epoxy,
protection paint epoxy and polyethylene and Cathodic protection
by sacrifice anode (Zinc was chosen as anode sacrifice) and
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The samples protected and non-protected study's in the middle of
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and then the comparison between the two Cathodic protection to
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The thyme is a wild plant naturally present in the Syrian Seaside at varying altitudes
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Albirdanie,
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essential oil.
This paper provides a major challenge, Because of many
bad conditions that effect oil pipelines properties, this paper
discuss the ability of manufacturing and applying the 3D
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This paper
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And finally, this paper gives an idea how and with any kind of
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