research centers


Search results: Found 3

Listing 1 - 3 of 3
Sort by

Article
Reduction of Formation Damage Due to Drilling Muds

Authors: Dhorgham S. Abrahim --- Samir A. Al-Assaf --- Akram H. Al-Hitti
Journal: Journal of Engineering مجلة الهندسة ISSN: 17264073 25203339 Year: 2005 Volume: 11 Issue: 1 Pages: 21-32
Publisher: Baghdad University جامعة بغداد

Loading...
Loading...
Abstract

An experimental study has been carried out in investigate the possible reduction of formation damage that is result from drilling muds. This was accomplished through making a bridging system with different barite additions 70, 140, 200, 280, lb/bbl to fresh water mud. This bridging system creates an effective sealing of impermeable filter cake, thereby inhibiting continual losses of small solids and mud filtrate into the formation. The study indicates that all the muds, which were used, have the ability to damage the petrophysical properties of formation, but some additives to mud reduce the damage in petrophysical properties. In addition, it is found that minimum permeability damage can be obtained when the particles of drilling mud are larger than the pore size of formation because no internal mud cake is created. Finally, the relationship between the pore size distribution of the core samples and particle size distribution of drilling muds becomes better and the impairment is reduced, when the particle size distribution in the mud is matched to the pore entry size distribution within the rock, so that each pore entry could be bridge as permitted by the particular fluid flow rate involved.

اجريت دراسة مختبرية لبحث امكانية تقليل ضرر التكوين الناتج عن استخدام اطيان الحفر. تم انجاز هذا من خلال عمل منظومة تجسير مع مختلف اضافات البرايت (280، 200، 140، 70 رطل / برميل) الى طين الماء العذب. هذه المنظومة تولد غلق محكم لكعكة الطين القليلة النفاذة، وبذلك تمنع الفقدان المستمر للقطع الصغيرة وراشح الطين داخل التكوين.تبين هذه الدراسة أن كل الاطيان التي استخدمت لها القابلية على الحاق الضرر بالمواصفات البتروفيزاوية للتكوين. لكن بعض الاضافات الى هذه الاطيان قلل الضرر في هذه المواصفات. اضافة الى ان اقل ضرر بنفاذية التكوين ممكن الحصول عليه عندما تكون جزيئات طين الحفر اكبر من حجم مسامات التكوين بسبب عدم تكون طبقة كعكة طين داخل هذه المسامات. واخيرا العلاقة بين توزيع الحجوم المسامية للنماذج الصخرية وتوزيع حجوم الجزيئات لطين الحفر، تصبح افضل والضرر يقل عندما يتطابق التوزيعان، حيث كل فتحة للمسام ستغلق بجزيئة خلال جريان المائع.


Article
A Deactivation Correlation for Platinum Y-Zeolite in n-Hexane Isomerization

Author: Haiyam Mohammed A. Al-Raheem
Journal: Engineering and Technology Journal مجلة الهندسة والتكنولوجيا ISSN: 16816900 24120758 Year: 2011 Volume: 29 Issue: 8 Pages: 1451-1462
Publisher: University of Technology الجامعة التكنولوجية

Loading...
Loading...
Abstract

The objective of the present work is to realize the kinetic modeling regardingdeactivation of Pt-HY zeolite and monitor the isomerization reaction of n-hexane. Thecatalyst has been prepared with o.4% Pt and evaluated during the isomerization reactionof n-hexane. Based on the results of catalytic investigation, a kinetic model was proposedto deactivate the catalyst by coke formation. The present method provides information onapparent overall kinetics as well as deactivation parameters and would seem to provide arapid method for screening of reaction/deactivation behavior. Accordingly thedeactivation order was found to be 3.72. The obtained correlation of deactivation predictsthe activity pattern under the applied reaction conditions, closely mimics those observedexperimentally, and spans those obtained from empirical correlations.


Article
Increasing production of gasoline and diesel fuel in medium and small refineries to meet the needs of Iraqi market

Authors: Aed Jaber Imran --- Adnan Abdul jabbar
Journal: Journal of Petroleum Research & Studies مجلة البحوث والدراسات النفطية ISSN: 22205381 Year: 2017 Issue: 14 Pages: 46-57
Publisher: Ministry of Oil وزارة النفط

Loading...
Loading...
Abstract

Iraq is considered one of the countries exporters of oil in the world, but the output of motors fuels from the refined crude oil less than (45 wt %), which is associated with the lack of Iraqi refineries with secondary processes.Iraq consist of five big capacity crude oil refineries which include (atmospheric crude distillation, hydrotreating, catalytic reforming and isomerization) and produce high quality motors fuel, in addition five medium and five small in capacity crude oil refineries include only atmospheric crude distillation which produce low quality raw products (light and heavy naphtha, light gasoil and reduced crude).The total capacity of Iraqi oil in the last years changed from 28 to 35 million ton/year. Most of our refineries include old equipment, but in spite of the annual maintenance for these refineries the motor fuels products could not able to cover all the Iraqi requirements of motor fuels 27 million ton/year.In these refineries produce reduced crude (fuel oil) in large quantity and because of this, Iraq imports gasoline fuel (30 wt%) of its requirements and LPG (17 wt%) of its requirements.This situation impose on us to increase the output products quantity from the Iraqi crude oil by development the medium and small capacity refineries via installation thermal processes units instead of vacuum distillation units, by this actual research we will find that the deep of refinery will increase from 54 to 70 wt%, and production of motor fuel will change from 45 to 68 wt%.Purpose of the work: development of the flowchart which is applied in Iraqi small capacity refineries (1.3 – 1.4 million Ton/year) by installation thermal cracking units to produce maximum allowable yield and quality of motors fuels.This research depends on actual experiments which are done by me in Ufa state petroleum technological university on actual crude oil and reduced crude brought from Iraqi’s refineries from the oil fields Basrah (Zubair) and Kirkuk.

Listing 1 - 3 of 3
Sort by
Narrow your search

Resource type

article (3)


Language

English (3)


Year
From To Submit

2017 (1)

2011 (1)

2005 (1)