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Register a new userStudy of Cathodic protection of crude oil pipelines
دراسة الحماية الكاثودية لأنابيب نقل النفط الخام
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تم في هذا البحث دراسة تأثير نوع الحماية من التآكل على معدلات تآكل عينات فولاذ كربوني من نفس معدن أنبوب نقل النفط المدفون في التربة و المقارنة بين معدلات تآكل عينات فولاذ كربوني غير محمية و معدلات تآكل عينات محمية بطرق حماية مختلفة و هي الحماية بدهان الايبوكسي و الحماية بدهان الايبوكسي و البولي ايتلن و الحماية الكاثودية بآنود مضحي ( تم اختيار الزنك كأنود تضحية ) و الحماية الكاثودية بتيار مسلط وضعت العينات المحمية و الغير محمية في وسط التآكل المتمثل بموقعين من تربة محافظة حمص (تربة مدينة حمص – تربة منطقة الفرقلس ) في كل تربة على حدا و بيان فعالية الحماية الكاثودية في رفع معدل الحماية و من ثم المقارنة بين نظامي الحماية الكاثودية في تخفيض معدل التآكل كما تم دراسة تأثير الرطوبة و الزمن على معدلات تآكل عينات فولاذ غير محمية و عينات فولاذ محمية كاثوديا" بآنود مضحي و أخيرا تم المقارنة بين معدلات التآكل بين تربتي الموقعين المدروسين (تربة مدينة حمص – منطقة الفرقلس ) و أييها أكثر عدائية و دراسة العوامل التي جعلت تربة الفرقلس أكثر عدائية من تربة مدينة حمص مما دفع بنا الى تحليل كلا التربتين و دراسة النتائج.
In this research study the effect of the type of corrosion protection, on the rates of Carbon Steel samples from the same metal tube oil buried in soil and comparing between corrosion rates of samples steel non protected and corrosion rates protected 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 Cathodic protection impressed current. The samples protected and non-protected study's in the middle of corrosion of two sites of Homs soil (soil city of Homs –soil of Furqlus area) In each soil alone and the statement of the effectiveness of the Cathodic protection in increase the protection and then the comparison between the two Cathodic protection to reduce the corrosion rate was also study the effect of humidity and time on the corrosion samples steel is protected and samples steel Cathodic protected rates by anode sacrifice and was finally comparison between rates corrosion between the signatories studied soils (soil city of Homs - soil of Furqlus area) and whichever is more aggressive and study the factors that have made the soil more Furqlus hostile soil of the city of Homs, prompting us to both soils analysis and study results.
References used
Michied p.H. Brongers,Corrosion control and prevention ,CC Technologies Laboratories,Inc,Dublin,Ohio,2000,pp.10-25
Frankel G. S., "Corrosion Science in 21st Century", Journal of Corrosion science and Engineering,Vol 6,2003,pp.1-15
API specification 5L forty – second edition , January 2000
rate research
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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.
In this paper, the data of the pressure has been analyzed in three crude oil pipelines and focus was on the values during the days where changes were irregular. In the same period, the study of internal corrosion rate was being done, using weight loss method. It has been noticed that when the value of pressure is greater than 2 Mpa, the
internal corrosion rate will be above the maximum. allowable limit which is 4 mil per year (MPY), while the internal corrosion rate will be within the acceptable range when the pressure is not greater than 1 Mpa.
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.
In this research we improve the desalting process by determine the
perfect value of demulsifier and washing water flow rate , reducing
the salts concentration of separated water current going to first stage
desalting and increasing residence time
of oil into desalter according
to the characteristic of oil and the process condition.
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
woven spacer composite fabric for insulating oil pipelines.
This paper
talks over the thermal, chemical, and mechanical
properties of the final product from the 3D Spacer Fabric and
the polymer resin matrix.
And finally, this paper gives an idea how and with any kind of
weaving machines these fabrics can be made.
The aim of this study is to highlight the potential use of marine algae as well as polypropylene for the removal of crude oil from surface seawater.
The determination of optimal sorption time and sorption capacity of the materials in oil/water bath
and oil bath without water in presence of three oils of different viscosity were investigated. The capacity of oil removal from seawater was related to structure and surface properties as well as oil amount and oil properties especially, its viscosity.
The results revealed that the extension of absorption time does not influence absorption capacity of the examined sorbents in presence of both oils of low and middle viscosity (LV and MV). Nevertheless, the sorption capacity was increased by extending the absorption time to 30 min. For high viscose oil (HV). The sorption capabilities of Enteromorpha exceeded those observed for all of the other algae, while polypropylene fiber showed the highest capacity. Overall, the sorption capacity of the studied sorbents increased with increasing oil viscosity. The absorption capacities of studied materials in the oil bath and oil/water bath were comparable.
The results suggested that substitution of synthetic oil sorbents used in Syria by marine algae is possible in oil removal, which have relatively high sorption capacity.
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