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Register a new userStudy Of Drilling Fluid Effect On The Production Casing
دراسة تأثير سوائل الحفر على مواسير التغليف الإنتاجية
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يوسف فرج( باحث )
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يهدف هذا البحث إلى زيادة العمر الاستثماري للآبار النفطية و الغازية. و ذلك من خلال تلافي المشاكل التي يمكن أن تتعرض لها مواسير التغليف نتيجة تأثير سوائل الحفر المختلفة , و السوائل الأخرى التي تتواجد عادة في الفراغ الحلقي خلف مواسير التغليف في الأماكن غير المسمنتة .
This research aims to increase the production lifetime of oil and gas wells through avoiding the problems that production casing string may be exposed to. Such problems are caused by the effect of different drilling fluids as well as other fluids normally existed in the annular behind casing at the none-cemented intervals.
References used
NOVIANTI ,E, B.T.H.Marbun ,B ,2015 Inegrated Analysis of Optimizing Materials Selecyion Of Geothermal Well by Using a Model for Calculating Corrosion Rates , Proceeding world Geothermal Congress ,Melbourne ,Australia
M.Farzan , P. Baghery ,H.R. Mardan Dezfully , 2011 Corrosion Study of steel API 5A,5L and AISI 1080,1020 in drilling- Mud environment of Iranian hydrocarbon field ISRN Materials Science
Rida ,E,Shokollah ,H ,Subhash ,S ,Samuel ,Osisanya,2016 Corrosion of C110 Carbon Steel in High-Pressure Aqueous Environment With Mixed Hydrocarbon and CO2 Gas Journal of Petroleum Science and Engineering ,Vol.146-77-10
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This research aims to decrease the cost of last production stages
through decreasing the cost of potential casing repair by avoiding the
problems that casing string may be exposed to. Such problems are
caused by the temperature effect of salt dril
ling fluids as well as other
fluids normally existed in the annular behind casing at the nonecemented
intervals.
"Korashina Anhdrite" formation in the Syrian Central Region's wells
considered as covering for "Korashina Dolimite" formation which is
a gas bearing reservoir, and consists of a succession of salt, clay,
and Shale. Much of the problems faced durin
g drilling this strata
like (High over pull/drag values, high pumps pressure, drill string
stuck), which led in some cases to stop the drilling operation, and
thus an increase in the drilling time, resulting in high final cost for
the completion of the well, salt saturated water based drilling mud
used to drill this formation but it did not completely solve the
problems.
This research aims to find out drilling mud treated with some kinds
of polymers and salts to be used to drill this formation with the
least problems.
This study was conducted in Tartus cattle station, on 14 Holishtain-Frisian calves at
the weaning age (12 weeks) in order to evaluate the effect of Methionine addition on the
productive parameters. The calves were divided in three groups, the first
one was
considered as a control, the second was fed on milk with 0.2% methionine, whereas the
third one on milk with 0.4% methionine.
The results showed that the Methionine addition to the diet of calves during the
weaning period, increased the daily growth rate after weaning, so this increase was 14%.
Our results also showed that the addition of Methionine improved the feed conversion
ratio after weaning.
The aim of this study was to evaluate and compare the effect of irrigation
solutions on the dentin flexural strength .(20) extracted third molars were
gathered with age avarege (18-24) years old, and the dentine bars that will
be prepared and designed for study with similar dimensions (width 1
mm, thickness 2 mm, Length of at least 7 mm).
In this article we studied two types of teeth, spherical and
conical one. We compared the results with a previous study for the
flat tooth. the study of stresses field under these three teeth show
that in the soft rocks we prefer to use conical to
oth because it is
easy to be Implanted in the rock, and this was confirmed by the
values of stresses under the tooth. Either in hard rock and due to
our need for big values of pressure to shatter the rock we prefer to
use spherical tooth because of its property of forming tow cons of
stresses under tooth and therefore can be good in drilling hard
rock..
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