Table of content

Journal of Petroleum Research & Studies

مجلة البحوث والدراسات النفطية

ISSN: 22205381
Publisher: Ministry of Oil
Faculty:
Language: Arabic and English

This journal is Open Access

About

The first issue of "Journal of petroleum Research and studies" was in August 2010.
How to publish .
After getting the demanded approval from the assessors on the Research , the Research will be ready to publish in the journal .
The journal is publishing annually.

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Contact info

prdc_journal@prdc.gov.iq

Table of content: 2018 volume: issue:18

Article
Corrosion Resistance Evaluation of Ni-Al YSZ Composite Coatings by An Electrochemical Investigation

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Abstract

The composite coating is used to protect carbon steel pipeline from corrosion by Surface modification using thermal spraying technique to enhance the corrosion resistance of carbon steel. In this study the influence of sour hydrocarbon on carbon steel was investigated on samples taken from Alloys with (API 5L) that used for oil transport pipe lines in North Oil Company in Kirkuk fields and specifically from well (No. K-130) which the oil sample was brought as well. The cermets coating (Ni-Al /ZrO2-8Y2O3) were prepared in different mixing ratios of Yttria-Stabilized Zirconia (YSZ) with Ni-Al as a self-bonding. Several mixing ratios of the binder (Ni-Al) were used to prepare the cermets for thermal spraying coating namely 15% and 50%. In order to study the effect of roughness on the binding of the cermets and hence the corrosion behavior of the carbon steel another specimen was mechanically abraded to a surface finish 800 grit by SiC paper and the cermets mixing ratio (50% YSZ+ 50% Ni-Al) .The thermal spraying gun was located in an angle of 90º in front of the carbon steel specimen and the distance between them was 16 cm. The corrosion behavior of the modified surface in comparison with untreated one was investigated by electrochemical techniques. Two electrochemical techniques (DC and AC techniques) were used. The AC technique was potentiodynamic cyclic polarization using Solatron 1287, USA) potentiostat/galvanostate. The EIS measurements for all coated specimens show enhancement in the impedance parameters (total impedance |Z|, polarization resistance (Rp) and the capacitance (C)) comparing to the uncoated one. The cermets thermally sprayed coating show improvement in the corrosion parameters.


Article
Experimental Investigation of Pipeline In-Service Welding Process

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Abstract

Welding of pipeline in active operation (called in-service welding) is an advanced technique employed to repair pipelines to safe transmission of petroleum or gas. A thermal experimental study is accomplished on welding process of gas pipeline in this work. An experimental setup had been designed, manufactured and instrumented to estimate the method for repairing locally pipelines defects (such as cracks and holes wall surface) under the influence of internal pressure. Also the thermal history of welding process was investigated experimentally to three cases which are : traditional welding process with no fluid flows inside the test pipe, an in-service welding process considering air as the flowing fluid inside test pipe, and an in-service welding process considering the liquefied petroleum gas (LPG) as flowing fluid inside test pipe. Results show that direct deposition of welding metal on a through hole under the influence of internal pressure succeeded for flow rate less than (12lpm) and failed for flow equal or higher than (12lpm) in which a sleeve repair is considered. The calculations are followed by a separate thermal stress analysis based on the thermal history.


Article
A Novel Approach for Adsorption of Lead (II) Ions from Wastewater Using Cane Papyrus

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Lead (II) ions are a very toxic element known to cause detrimental effects to human health even at very low concentrations. An adsorbent prepared using Cane Papyrus was used for the adsorption of lead (II) ion from aqueous solution. Batch experiments were performed on simulated aqueous solutions under optimized conditions of adsorbent dosage, contact time, pH and initial lead (II) ion concentration at 25Co. The Freundlich isotherm model more suitably described the adsorption process than the Langmuir model with linearized coefficients of 0.986 and 0.9733, respectively. Pseudo-second order kinetic equation best described the kinetics of the reaction. Fourier transform infra-red analysis confirmed the presence of amino (–NH), carbonyl (–C=O) and hydroxyl (–OH) functional groups. Furthermore, 0.2M HCl was a better desorbing agent than 0.2 M NaOH and de-ionized water. The experimental data obtained demonstrated that Cane Papyrus can be used as a suitable adsorbent for lead (II) ions removal from wastewater.


Article
New Alternative Thinner in the Drilling Fluid System A

Authors: Wissam H. AL-Hashimi,
Pages: E43-E62
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Abstract

The most important constituent of drilling operation success is keeping the drilling fluid rheological properties within a certain limit to maintain continuing their functions in a good manner. To achieve that, the drilling mud system needs continuous and direct supervision such as measuring its rheological properties and treating any deviation in their values. Viscosity is the most important property in hydraulic program success due to its direct relation with bottom hole cleaning during drilling, thus related with the drilling rate, so this property should be kept basically to ensure bottom hole cleaning and high drilling rate at the same time. Some chemicals such as thinner should be added to the mud system to keep both viscosity and other properties within certain standards and required limits; these materials have a high cost, increasing both the metric cost and the final cost of such well. The aim of this research is to test the physical and chemical properties for a local material, as a thinner, which tends to decrease the rheological properties of drilling mud .Thirty nine samples of different types of drilling mud are tested with both the native and foreign imported materials. The results for both additive materials are compared and concluded that the local thinner has the same trend with the imported material to a certain limit.

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Article
Solar Chimney and Power Tower Techniques for Power Production in Nasiriya City

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The solar chimney and power tower are two of modern promised energy which can develop by low losses, simplicity and high power. In this paper, the solar chimney and fossil fuel power tower parameters are studied by using theoretical equations in computational fluid dynamics CFD that substituted in some computer programs such as MATLAP and FLUENT codes with additional related expressions. Five different models are used in this paper (Chimney height is: 12, 15, 20, 25, and 35 meter), (Diameter of collector base is: 5, 8, 10, 15, and 20 meter). The effect of inlet collector height, collector absorbability, solar radiation, ambient temperature, solar collector thickness and solar collector tilt angle are studied to find the other parameters and properties such as velocity distribution, power and efficiency of system. The erecting of power turbine is predicted by findings the velocity distribution between the base and chimney assembly. The numerical analysis was presented by using GAMBIT and FLUENT 6.3 to predict that high velocity at the expansion of chimney near the center of base – chimney bond position because of low density of air as a result to solar radiation flux (and burned gases cover collector in case of using the chimney for combustion of gases in oil refineries).. This position is very suitable for promoting and building the power turbine. The maximum power accumulated from these techniques is more than (6.7×105 Watt) where the velocity is (17.5 m/s). The study concluded that it is easy work to erect these chimney and power tower techniques closed to drilling and oil facilities in remote areas. So, all factors were studied to coincide with previous papers in this field.


Article
Synthesis and Characterization of Porous Ceramic Hollow Fibers with Nano-Molecular Size

Authors: Hussein Qasim Hussein
Pages: E77-E92
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Abstract

This research exhibits a method for the fabrication of nano molecular size ceramic porous hollow fibers, using the internal diffusion technique. This method is based on preparation a spinning solution consists from nano gamma alumina < 50nm in an aqueous mixture of sodium alginate, and calcium carbonate. The mixture is spun into a lactic acid coagulation bath of pH= 1.6 to achieve ionic cross-linking. The green transparent ceramic hollow fibers were dried under ventilation at ambient temperature for 48h and sintered at different temperatures 1100 oC-1350 oC for 2h. The synthesized fibers were characterized and the effect of sintering temperature on surface morphology was studied. The phase transformation from gamma to alpha was specified by x-ray diffraction, at 1100 oC a few small and sharp peaks of α-alumina started while at 1250 oC α-alumina with a highly crystalline structure was obtained. Microstructure and surface morphology of nano ceramic fibers were studied at different sintering temperatures, a homogeneous particle distribution was gained at a temperature of 1250 oC. The thermal gravimetric analysis was referred to an existence of two thermal steps occurred during thermal treatment, dehydration up to 250 oC and alginate dehydration and decomposition from 250 oC to 400 oC. The nitrogen isotherm behavior indicates to a mesoporous / macroporous substance, an appearance of type H-2 hysteresis loop. BJH adsorption and desorption average pore diameter (4V/A) 14.4408 nm and 17.7124 nm respectively. Single point surface area is 9.268 m²/g, single point adsorption total pore volume is 0.023 cm³/g. The average interior and exterior pore size by mercury intrusion were 20 nm and 50 nm respectively.


Article
تحضير وتشخيص وتقييم مركب خلات اثيلين ثنائي الامين N', N – ثنائي حامض الخليك ثنائي (2- مثيلين رباعي هيدروفورفوريل) كمثبط لتأكل فولاذ الكربون في وسط حامض الكبريتيك

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Abstract

يتضمن البحث تحضيرحامض الاثيلين ثنائي الامين رباعي حامض الخليك اللامائي [1] من خلال تفاعل مادة الاثيلين ثنائي الامين رباعي حامض الخليك (ethylene diamine tetraacetic acid) EDTA مع حامض الخليك اللامائي وبوجود البيريدين تحت ظروف التصعيد. في الخطوة الثانية من التحضير العضوي تم مفاعلة المركب [1] مع الكحول الحاوي على حلقة غير متجانسة tetrahydrofurfuryl alcohol ليتكون استرالخلات الثنائي [2] الحاوي في تركيبه على مجموعة الاستر والحلقة غير المتجانسة بشكل ثنائي. تم تنقية المركبات المحضرة واثبات تراكيبها من خلال قياس درجات الانصهار، كما شخصت بواسطة الطرائق الطيفية ( الاشعة تحت الحمراء FTIR ) , وتقنية الرنين النووي المغناطيسي للهيدروجين والكربون (1HNMR, 13CNMR). تم دراسة تأتير المركب [2] الذائب بالماء كمثبط لتأكل فولاذ الكربون في محيط 0.3 عياري حامض الكبريتيك باستخدام منحنى الاستقطاب بواسطة المجهاد الساكن. بينت النتائج المستحصلة من منحنيات الاستقطاب انخفاض تأكل العينة بعد اضافة 50 جزء بالمليون من المركب [2] مقارنة بعدم اضافته من خلال قيم تيار التأكل وبدرجات حرارية مختلفة تراوحت بمدى (308-338) كلفن. تم ايضا حساب القيم الثرموديناميكية للامتزاز وهي الطاقة الحرة القياسية للامتزاز ، انثالبي الامتزاز ، انتروبي الامتزاز. وكذلك تم احتساب القيم الحركية من طاقة التنشيط ، معامل ارينيوس ، انثالبي التنشيط ، انتروبي التنشيط بغياب ووجود الاستر المحضر [2].

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Article
تقييم طلاءات متراكبات اوكسيد المغنسيوم النانوي للسيطرة على التآكل في الخزانات المعدنية النفطية

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استهدف البحث التعرف على مستوى الطلاءات النانوية المتراكبة لسبيكة من الفولاذ المقاوم للصدأ والمستعملة في صناعة الخزانات المعدنية لخزن المشتقات النفطية في شركة توزيع المنتجات النفطية بمادة سيليكات الصوديوم ونترات السيليلوز. إذ حُضر عدد من متراكبات سيليكات الصوديوم و نترات السيليلوز المدعمة بدقائق اوكسيد المغنسيوم (MgO) بنسب تدعيم وزنية ( .(1-3 wt.%تم تشخيص التركيب الكيميائي للسبيكة (St-37) باستخدام Spectrometer OE. درست طبوغرافية وطبيعة سطح مادة الطلاء بواسطة مجهر القوة الذرية (AFM))(Atomic Force Microscope والمجهر الضوئي (Optical Microscope). كما اعد مقياس معرفي تكون من فحص الصلادة (Hardness) و البلى (Wear) و متانة الالتصاق Adhesion)) واختبار التآكل الكيميائي (Chemical Corrosion) علاوة على اختبار التآكل الكهروكيميائي (Electrochemical Corrosion). لقد تبين إن الفولاذ المقاوم للصدأ هو من نوع (St-37) وهو فولاذ قليل الكاربون حسب المواصفة الامريكية (ASTM). وجد إن الصلادة تزداد ومعدل البلى يقل مع زيادة نسب التدعيم. ان متانة الالتصاق لنترات السيليلوز(232 Pa) اكبر من سيليكات الصوديوم(171 Pa) لنسبة التدعيم (3 wt.%). وقد اظهرت اختبارات التآكل الكيميائي والكهروكيميائي ان نترات السيليلوز هي اكثر مقاومة للتآكل من سيليكات الصوديوم لنسبة التدعيم (3 wt.%).


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Article
Table (1) Iraq Crude Oil Exports – November 2016

Pages: E1-E1
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Table (2) Iraq Crude Oil Exports – December 2016

Pages: E2-E2
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Table (3) Iraq Crude Oil Exports – JANUARY 2017

Pages: E3-E3
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Table of content: volume: issue:18