كلية االهندسة

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Appling nitric acid and hydrochloric acid to be use in well stimulation processes
(جامعة سبها, 2020) عمر, نجمة; عبدالسلام, آية
Acidizing involves pumping acid into a wellbore or geologic formation that is capable of producing oil and/or gas. The purpose of any acidizing is to improve a well’s productivity or injectivity. There are three general categories of acid treatments: acid washing; matrix acidizing; fracture acidizing.
The Best Orientation for Parabolic Trough Concentrator
(جامعة سبها, 2022) صالح, حليمة
Solar energy is continuous on Earth and is a source from sources of renewable energies. The brightness of the sun's rays is in the form of radiation. This solar radiation and the conversion of solar energy can be used in a different form using different methods and techniques. The study was applied to Program MATLAB of the city of Sebha to simulate the tracking of the sun's rays by moving in detailed ways to reduce the angle of incidence of the incidence of beam radiation. on its surfaces, a comparison was made between the fifth systems.
Biodiesel Production Using Calcined Eggshells Loaded on Barium Oxide as a Catalyst
(جامعة سبها, 2024) محمد أحمد محمد
Characterization of activated carbon and its performance to treat produced water for water injection
(جامعة سبها, 2020) عبدالله, محمود; أبوبكر, طه
Water injection (water flooding) method used in oil recovery is where the water is injected out into the reservoir usually to increase the pressure. Before the water is injected into the reservoir there are many processes passes through it, one of the main process is the treatment. Water injection could be treated by many methods and different ways. In this search, activated carbon was used as a treatment substance for injection water. Its source was the date seeds, where this seed was converted to non-activated carbon physically and activated chemically. Three different volumes of activated carbon were used in the water treatment Operation, to obtain treated water samples of different sizes. A spontaneous imbibition test for sandstone core samples after saturated of crude oil. A spontaneous imbibition test consisting of three scenarios of treatment water by Activated Carbon with change temperature and compared with one scenario of Reservoir water (untreated). The spontaneous imbibition test was performed in this study at room temperature to oven temperature (45°C, 55°C, 70°C). The results showed that the best oil recovery was by using water treated with activated carbon volume (0.125mm) is (70.41%) at the maximum temperature used.
Chemical Synthesis of Aluminum oxide Nanoparticles, Determination of Antimicrobial Activity
(جامعة سبها, 2023) Almahdi Ali Almahdi; Abdelsalam Mesbah Masoud
In this study,Aluminum oxide nanoparticles were prepared by sol gel method , aluminum oxide nanoparticles were evaluated using x-ray fluorescence (XRF) , Fourier transforms infrared spectroscopy (FT-IR) and X-ray diffraction (XRD), This study also determines the antibacterial and fungus activity of Al2O3 nanoparticles against pathogens such as Staphylococcus aureus, Escherichia Coli and Trichophyton rubrum, The average crystallite size of Al2O3 nanoparticles was determined to be 30 nm in XRD, Staphylococcus aureus , Escherichia Coli and Trichophyton rubrum displayed a peak zone of inhibition (15 , 13 mm) and (70%) in the antimicrobial experiment at a dose of 100 mg/ml of Al2O3 nanoparticles, aluminium oxide is a powerful antibacterial and fungus agent that may be used to treat a wide range of human illnesses.
Chemical Synthesis of Aluminum oxide Nanoparticles, Determination of Antimicrobial Activity
(جامعة سبها, 2023) علي, المهدي; موسي, عبدالسلام
In this study,Aluminum oxide nanoparticles were prepared by sol gel method , aluminum oxide nanoparticles were evaluated using x-ray fluorescence (XRF) , Fourier transforms infrared spectroscopy (FT-IR) and X-ray diffraction (XRD), This study also determines the antibacterial and fungus activity of Al2O3 nanoparticles against pathogens such as Staphylococcus aureus, Escherichia Coli and Trichophyton rubrum, The average crystallite size of Al2O3 nanoparticles was determined to be 30 nm in XRD, Staphylococcus aureus , Escherichia Coli and Trichophyton rubrum displayed a peak zone of inhibition (15 , 13 mm) and (70%) in the antimicrobial experiment at a dose of 100 mg/ml of Al2O3 nanoparticles, aluminium oxide is a powerful antibacterial and fungus agent that may be used to treat a wide range of human illnesses.
Department of Chimical Engineering
(جامعة سبها, 2022) محمد, حمزة; آمير, فاطمة; محمد, علي
The use of organic or inorganic coatings for protecting metallic substrates is widely accepted in various structural engineering applications, such as aerospace, automobiles. In order to meet the industry requirements, the ability to achieve good corrosion resistance properties under a wide variety of conditions should be considered. The present work is based upon the use of Mg-Al sol-gel material to protect mild steel substrates against NaCl media. Filiform corrosion was employed in this experimental work to identify the possibility of corrosion on mild steel substrates compared with the commercial epoxy resin. Filiform corrosion is usually initiated by weak points or discontinuities in the film they never cross each other, and their growth is independent of light and of the metallurgical structure of the metal substrate and the driving force of this type of corrosion is controlled by the osmotic action (pressure) in the growing corrosion cell. The attack of this type of corrosion is usually affects steel. Visual examination of mild steel samples for both coated system showed the unstable adhesion property of epoxy resin on mild steel surface compared with that in the sample coated with sol-gel material. This can be attributed to chemical structure of Mg-Al sol-gel material play a key role in this behavior. IR spectra showed the two small bands at 3072 and 3049 cm-1 correspond to the C-H stretching vibrational bands. Additional a very strong bands between 1300 and 1200 cm-1 proves the presence of magnesium into the structure of the sol-gel materials. Also, the combination bands at 1711 and 1630 cm-1 are visible in these spectra and are related to the incorporation of aluminum and magnesium into the sol-gel structure. All these chemical bonds within the structure of sol-gel play a role in reducing the inter of water molecules within the Mg-Al\sol-gel and develop more adhesion bonding at the interface of sol-gel material and metal surface.
DESIGN AND SIMULATION OF A SOLAR PV SYSTEM FOR THE DEPARTMENT OF RENEWABLE ENERGY ENGINEERING
(جامعة سبها, 2022) عبدالحميد, الطيف; عبدالجليل, اشتيوي
Solar energy has incredible potential to power our daily lives. Researchers suggest that the amount of sunlight striking the Earth's surface in one and half hour is enough to handle the energy consumption of the entire world for an entire year. Solar power system is one of the best renewable energy technologies that are not only cost effective but also environmentally friendly. Sebha city suffer from fluctuating of electricity and power blackout occurs many time during the last years. This due to imbalance between power generation and power consumption. Power cut is critical at some sites in the city like hospitals, water supply station, education institutions. The department of renewable energy engineering at Sebha university suffers from power cut prolong more than five hours during summer time. This effect the study plan in the department. The purpose of this project is to design PV system for the department to supplies electricity during power cut. The PV system will be offgrid system install on the roof of the department building. A backup battery will be used as stand up power source in the worst weather and during the early morning hours in winter time when the solar radiation is low. This project will focus on how a disconnected/autonomous systems approach can help reduce dependence on the grid and allow us to live self-sufficient without relying on one or more utilities. We designed the PV system of department of a renewable energy building using SAM simulation software
Design of Parabolic Trough Collector Power Plant using (SAM) Software, in Sabha region
(جامعة سبها, 2023) Ayman Abdul Karim Muhammad
Concentrated solar power (CSP) is a leading renewable energy technology, and the parabolic trough (PT) is one of the most used configurations of CSP. In the present study, the performance improvement and energy cost reduction of a 50 MWe PT plant for Sabha, Libya is presented. The simulations were carried out using the System Advisor Model software. The analyses of a PT plant with different technologies/parameters are undertaken in the first instance for six cases. These cases include solar multiple, solar collectors, receivers, heat transfer fluid, cooling system (evaporative and air-cooled), thermal energy storage system (4–12 h), Based on these analysis, the seventh case, which is found to be the bestcase scenario in this study, was considered by taking into account the best of preceding case results and was determined to be the most suitable both in terms of performance and cost reduction. It is, therefore, concluded from this study that the utilization of CSP plants with a proper selection of technology could help reduce energy costs and environmental pollution, enhance system performance, and meet energy demands effectively
The Effect of Gabraun and Distilled water on Corrosion rate of brass and Carbon Steel specimens when immersed together in one beaker
(جامعة سبها, 2021) يحي, آلاء; ادريس, خديجة
The aim of this work was to study the effect of Gabraun`s water on corrosion of yellow copper (Brass) and carbon steel. The corrosion tests were carried out in this study at room temperature. The test solution (electrolyte) used in this study was Gabraun and Distilled water samples. From the obtained results, it was found that the weights of all the brass specimens immersed in Gabraun`s water were decreased. The color of the Gabraun water samples that was used for Brass specimens corrosion tests was changed to dark blue color, this color was attributed to copper sulfate resulted from corrosion reaction, while for carbon steel the color of the water did not change and some of the specimens weights were decreased and the others were increased.
the Effect of Iron oxide Particle Size on the Compressive Strength of Cement Mortar
(جامعة سبها, 2022) علي, محمد
Cement mortar is a heterogeneous material obtained by mixing cement paste (binder) with aggregates (filler), the later constituting more than 80% of the cement mortar. Cement mortar is a macro-material strongly influenced by addition other materials such as iron oxide. One of the most important properties of hardened cement mortar is its compressive strength, which can be quantitatively measured. In the present research the effect of iron oxide particle size on the compressive strength of cement mortar was studied. The particle size of iron oxide considered as (0.25 mm, 0.50 mm, 1.00 mm, 1.50 mm, and 4.00 mm). The compressive strength of hardened cement mortar samples were tested after 28 days of completion of curing. Results showed that the compressive strength of the cement mortar using a various iron oxide particle size increased with decreasing the particle size. Maximum increasing in compressive strength was about 20%, the addition of iron oxide to concrete with suitable fine iron oxide particle size will enhance the compressive strength of cement mortar due to the less formation of porosity
ENHANCED OIL RECOVERY BY USING ALUMINUM OXIDE NANOPARTICLES SUPPORTED BY ARABIC GUM
(جامعة سبها, 2022) محمد, سليمان; احميد, نوف
Enhancing Oil Recovery in Sandstone Core Samples Using Zeolite, Sodium & Potassium Hydroxide, Slica, AL, Addition to Formation Water
(جامعة سبها, 2023) حمد أبوبكر محمد; طاهر محمد إبراهيم
This research project explores the effectiveness of adding zeolites to formation water for enhancing oil recovery. The demand for fossil fuels, particularly oil, remains significant for meeting global energy needs. However, primary oil production methods fall short in extracting most of the original oil-in-place (OOIP). Enhanced Oil Recovery (EOR) methods are employed to address this challenge. Among these methods, water flooding plays a vital role in increasing oil production by maintaining reservoir pressure and displacing oil from pore spaces, leading to improved ultimate oil recovery. To enhance the efficiency of water flooding, various chemicals have been tested and proven effective when added to the injected water. These include smart water injection, carbonated water injection, surfactant solutions, polymers, alkalis, mutual solvents, and foam injection. Zeolites, known for their porous structure and ion-exchange properties, have gained prominence in numerous industrial applications, including EOR. This research investigates the impact of adding zeolites to formation water on oil recovery. The research issue arises from the recognition that formation water alone may not efficiently recover oil due to oil properties and rock characteristics. The aim of this study is to determine whether the inclusion of zeolites in formation water can enhance oil recovery. Experiments are conducted on sandstone core samples obtained from a Libyan field in the Murzuq basin, using oil with a density of g/cc. The findings of this research hold significance for fields subjected to water injection in Libya, as successful implementation of zeolites could substantially increase the country's daily oil production rate. The experimental results demonstrate that the addition of zeolite, sodium hydroxide, potassium hydroxide, silica, and aluminum significantly improves oil recovery at higher temperatures for sandstone core samples. Furthermore, the inclusion of sodium hydroxide yields superior oil recovery compared to potassium hydroxide. Using 15% of sodium and potassium hydroxides yields better results than other percentages, although the underlying cause is not explored in this study. Additionally, the combination of zeolite, sodium and potassium hydroxides, silica, and aluminum enhances oil recovery, warranting further investigation into the underlying mechanisms
Enhancing Oil Recovery in Sandstone Core Samples Using Zeolite, Sodium & Potassium Hydroxide, Slica, AL, Addition to Formation Water
(جامعة سبها, 2023-03) Taher Mohamed Ebrahem; Hamad Abobaker Mohamed
This research project explores the effectiveness of adding zeolites to formation water for enhancing oil recovery. The demand for fossil fuels, particularly oil, remains significant for meeting global energy needs. However, primary oil production methods fall short in extracting most of the original oil-in-place (OOIP). Enhanced Oil Recovery (EOR) methods are employed to address this challenge. Among these methods, water flooding plays a vital role in increasing oil production by maintaining reservoir pressure and displacing oil from pore spaces, leading to improved ultimate oil recovery. To enhance the efficiency of water flooding, various chemicals have been tested and proven effective when added to the injected water. These include smart water injection, carbonated water injection, surfactant solutions, polymers, alkalis, mutual solvents, and foam injection. Zeolites, known for their porous structure and ion-exchange properties, have gained prominence in numerous industrial applications, including EOR. This research investigates the impact of adding zeolites to formation water on oil recovery. The research issue arises from the recognition that formation water alone may not efficiently recover oil due to oil properties and rock characteristics. The aim of this study is to determine whether the inclusion of zeolites in formation water can enhance oil recovery. Experiments are conducted on sandstone core samples obtained from a Libyan field in the Murzuq basin, using oil with a density of g/cc. The findings of this research hold significance for fields subjected to water injection in Libya, as successful implementation of zeolites could substantially increase the country's daily oil production rate. The experimental results demonstrate that the addition of zeolite, sodium hydroxide, potassium hydroxide, silica, and aluminum significantly improves oil recovery at higher temperatures for sandstone core samples. Furthermore, the inclusion of sodium hydroxide yields superior oil recovery compared to potassium hydroxide. Using 15% of sodium and potassium hydroxides yields better results than other percentages, although the underlying cause is not explored in this study. Additionally, the combination of zeolite, sodium and potassium hydroxides, silica, and aluminum enhances oil recovery, warranting further investigation into the underlying mechanisms.
Enhancing Oil Recovery in Sandstone Core Samples Using Zeolite, Sodium & Potassium Hydroxide, Slica, AL, Addition to Formation Water
(جامعة سبها, 2023-03) Taher Mohamed Ebrahem; Hamad Abobaker Mohamed
This research project explores the effectiveness of adding zeolites to formation water for enhancing oil recovery. The demand for fossil fuels, particularly oil, remains significant for meeting global energy needs. However, primary oil production methods fall short in extracting most of the original oil-in-place (OOIP). Enhanced Oil Recovery (EOR) methods are employed to address this challenge. Among these methods, water flooding plays a vital role in increasing oil production by maintaining reservoir pressure and displacing oil from pore spaces, leading to improved ultimate oil recovery. To enhance the efficiency of water flooding, various chemicals have been tested and proven effective when added to the injected water. These include smart water injection, carbonated water injection, surfactant solutions, polymers, alkalis, mutual solvents, and foam injection. Zeolites, known for their porous structure and ion-exchange properties, have gained prominence in numerous industrial applications, including EOR. This research investigates the impact of adding zeolites to formation water on oil recovery. The research issue arises from the recognition that formation water alone may not efficiently recover oil due to oil properties and rock characteristics. The aim of this study is to determine whether the inclusion of zeolites in formation water can enhance oil recovery. Experiments are conducted on sandstone core samples obtained from a Libyan field in the Murzuq basin, using oil with a density of g/cc. The findings of this research hold significance for fields subjected to water injection in Libya, as successful implementation of zeolites could substantially increase the country's daily oil production rate. The experimental results demonstrate that the addition of zeolite, sodium hydroxide, potassium hydroxide, silica, and aluminum significantly improves oil recovery at higher temperatures for sandstone core samples. Furthermore, the inclusion of sodium hydroxide yields superior oil recovery compared to potassium hydroxide. Using 15% of sodium and potassium hydroxides yields better results than other percentages, although the underlying cause is not explored in this study. Additionally, the combination of zeolite, sodium and potassium hydroxides, silica, and aluminum enhances oil recovery, warranting further investigation into the underlying mechanisms.
EVALUATION AND ANALYSIS FARRUD RESERVOIR IN GHANI-FIELD BY USING PETROLEUM EXPERTS SOFTWARE (MBAL)
(جامعة سبها, 2022) علي, يوسف; مالك, عبدالله; الأمين, محمد
This project report covers the analysis of reservoir performance both historical and predicted under the given factors and variables that affect production from reservoir data that has obtained, The data collected from "Farrud" reservoir, the simulated data are calculated depending on sum of RRR29, RRR31 and RRR32 wells, and analyzed by using MBAL software. This software is applies material balance equation and other reservoir properties in the order to achieve the accurate OOIP based on the old OOIP and correct the data to estimate future performance of reservoir. In this study, different scenarios have been handled to match the old data that collected from the field. The best model can fit with data was (Schilthuis Steady State Model) water influx and correct the diffusivity depending on reservoir pressure, the old OOIP was 814 MMSTB and the corrected value of OOIP is 830 MMSTB. So, the results were close to the productivity that inputted in the production history and doesn’t reached bubble point pressure which was 1900 psia and the reservoir pressure has been maintained to keep above the bubble point pressure. Thus, long shut in period in simulated data let the pressure to increase around 150 Psia from the original value. Two scenarios has been conducted to predict the future performance in this field, first scenario is if the reservoir started producing 500 bbl/day of oil and 221 Mscf/stb of gas for each well without any injection, and the second scenario under the injection effect with injection rate 3000 bbl/day with 200000 ppm salinity and the productivity is 6000bbl/day for oil and 2652 Mscf/stb, both scenarios showed great results and didn’t reached bubble point pressure until 2040, the pressure was 2106 Psia for first scenario and 2073 Psia for second scenario, the two scenarios could be recommended to the Al-ghani-field in the order to Improve the productivity.
Experimental study of a solar water heater for effect of solar radiation and mass Flow Rates
(جامعة سبها, 2024) علي عبدالسلام الزين; انشراح أحمد بشير
GAS LIFT OPTIMIZATION
(جامعة سبها, 2022) عبدالكريم, حسين; عمر, محمد; حماد, عبدالله
The production optimization is very broad subject contain vast subtitles which include but not limited to:  Identifying undesirable fluid sources (such as H2s and high water cut) and handle it.  Locate system bottlenecks and malfunction and unintended operations conditions  Scheduling periodic maintenance and equipment's replacements  Analyze failure data and derive occurrence pattern and reasons  Complying with operations constrains (such as limited water handling, separator capacity, gas injection availability)  Ensuring meeting target key performance indicator (KPI) for system.  Monitoring system response when sudden changes introduced and act accordingly to preserve valuable assets (reservoir and facilities)  Instrumental calibration
Giardia lambilia دراسة مدي انتشار الإصابة بـ فيما بين أطفال المدارس بمنطقة تراغن
(2013-04-22) محمود, سعدة مسعود صالح
تم في هذه الدراسة فحص 250 عينة بأعمار مختلفة من 5-18 سنة لكلا الجنسين (119 ذكور، 131 الإناث) من مدارس تراغن الإبتدائية لغرض دراسة مدى إنتشار الإصابة بـGiardia lambilia المسـبب لـ Giardiasis الذى يصـيب الأمعـاء الدقيقـة مسببا الإسهـال والـقـيء وسوء الإمتصاص، فحصت تحضيرات هذه العينات مباشرة بإستخدام المحلول الملحي ومحلول الايودين للتعرف على الاطوار النشطة والمتكيسـة تحت المجهر ولم يتم العثـور على أي منها وبالتالي أجريت الإختبارات التأكيدية (الطفو، الترسيب) وإتضح عدم وجود الطفيل في جميع العينات وذلك يعزى لمؤشرات صحية عالية. وتم البحث عن وجود عينة Control لمعايرة صحة ودقة النتائج المتحصل عليها ولم تتواجد أي عينة أو أية تقييدات بخصوص تواجد الطفيل بالمنطقة.
Hybrid Artificial lift System by the PIPESIM Software
(جامعة سبها, 2021) محمد, ابتهال; فرج, محمد
The production system considers from the basic systems in the oil and gas industry and this stage comes after well completion, the production operations divided into natural and artificial flow, when natural production depleted artificial lift takes place. The hybrid artificial lift system in this research consisting of two systems: the gas injection system and the electric submersible pump system in the same well, every way has its limitation and disadvantage. when using only one method of artificial lift the time period for stopping production in wells is approximately months, The life span of these pumps is short, ranging from one and a half to two years, after these pumps fail and must be replaced by the workover rigs, or a problem can cause a frailer in injecting gas to gas lift system means losing a lot of time and a lot of oil that can be produced in the lost time, therefore losing money. This research focused on hybrid artificial lift to protect the reservoir mechanism, get the maximum benefits of the well, increase the production and saving time by reducing stops production periods and as a result more time means more money, this aim was reached by using PIESIM software which has the ability to design suitable conditions for the well, Currently, the effort spent in production systems design is increasing significantly. We obtained satisfactory results to increase production and saving time, and the result was proven by numbers, curves and tables, and we really hope that our research is a reference to many students or those interested in the field.

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