Petroleum Engineering Commons^™

Characterization And Oil Recovery Enhancement By A Polymeric Nanogel Combined With Surfactant For Sandstone Reservoirs, Mustafa Mohammed Almahfood, Baojun Bai

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

The characterization and enhanced oil recovery mechanisms of a nanosized polymeric cross-linked gel are presented herein. A negatively charged nanogel was synthesized using a typical free radical suspension polymerization process by employing 2-acrylamido 2-methyl propane sulfonic acid monomer. The synthesized nanogel showed a narrow size distribution with one peak pointing to a predominant homogeneous droplet size. The charged nanogels were also able to adsorb at the oil-water interfaces to reduce interfacial tension and stabilize oil-in-water emulsions, which ultimately improved the recovered oil from hydrocarbon reservoirs. In addition, a fixed concentration of negatively charged surfactant (sodium dodecyl sulfate or SDS) was …

An Experimental Study Investigating The Impact Of Miscible And Immiscible Nitrogen Injection On Asphaltene Instability In Nano Shale Pore Structure, Mukhtar Elturki, Abdulmohsin Imqam

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Miscible gas injection has become the most used enhanced oil recovery (EOR) method in the oil and gas industry. The deposition and precipitation of asphaltene during the gas injection process is one of the problems during the oil production process. The asphaltene can deposit and plug the pores, which reduces the permeability in a reservoir; thus, decreasing the oil recovery and increasing the production costs. This research investigates the nitrogen (N2) miscible and immiscible pressure injections on asphaltene instability in shale pore structures. First, a slim tube was used to determine the minimum miscibility pressure (MMP) of N2 to ensure …

Prediction Of Equivalent Liquid Permeability From Gas Permeability Measurements: A Recurrent Neural Network Approach, Husam Alkinani, Abo Taleb Al-Hameedi, Shari Dunn-Norman

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

One of the most vital reservoir properties is permeability. It is usually measured using core samples with two major measurement methods: using gas or using liquid. The purpose of this work is to use a data-driven recurrent neural network model to estimate the equivalent liquid permeability based on gas permeability. By using this model, the equivalent liquid permeability can be predicted for the permeability of core samples with rich clay minerals measured using gas (or any core sample that is measured using gas). This will give an alternative way to the currently used method (Klinkenberg method). Core sample data measurements …

Minimizing Lost Circulation Non-Productive Time Using Expected Monetary Value And Decision Tree Analysis, Husam Hasan Alkinani, Abo Taleb Tuama Al-Hameedi, Shari Dunn-Norman

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Lost circulation and problems related to drilling present a major challenge for the drilling industry. Each year, billions are spent to treat these problems. There is not a single solution to lost circulation because of the complexity and kind of formations susceptible to this issue. Lost circulation treatment data for the Shuaiba formation (induced fractured formation) were gathered from drilled wells in Southern Iraq (over 2000). Treatments have been grouped according to the volume of mud loss as complete, severe, and partial loss remedies. Detailed costs and probabilities calculations were conducted. The costs of three types of loss treatments (partial, …

What Are The Dominant Flow Regimes During Carbon Dioxide Propagation In Shale Reservoirs’ Matrix, Natural Fractures And Hydraulic Fractures?, Sherif Fakher, Youssef Elgahawy, Hesham Abdelaal, Abdulmohsin Imqam

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Carbon dioxide (CO₂) injection in low permeability shale reservoirs has recently gained much attention due to the claims that it has a large recovery factor and can also be used in CO₂ storage operations. This research investigates the different flow regimes that the CO₂ will exhibit during its propagation through the fractures, micropores, and the nanopores in unconventional shale reservoirs to accurately evaluate the mechanism by which CO₂ recovers oil from these reservoirs. One of the most widely used tools to distinguish between different flow regimes is the Knudsen Number. Initially, a mathematical analysis of …

Will Carbon Dioxide Injection In Shale Reservoirs Produce From The Shale Matrix, Natural Fractures, Or Hydraulic Fractures?, Sherif Fakher, Youssef Elgahawy, Hesham Abdelaal, Abdulmohsin Imqam

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Enhanced oil recovery (EOR) in shale reservoirs has been recently shown to increase oil recovery significantly from this unconventional oil and gas source. One of the most studied EOR methods in shale reservoirs is gas injection, with a focus on carbon Dioxide (CO₂) mainly due to the ability to both enhance oil recovery and store the CO₂ in the formation. Even though several shale plays have reported an increase in oil recovery using CO₂ injection, in some cases this method failed severely. This research attempts to investigate the ability of the CO₂ to mobilize crude …

Impact Of Rheology Models On Horizontal Well Polymer Flooding In A Heavy Oil Reservoir On Alaska North Slope: A Simulation Study, Jianqiao Leng, Mingzhen Wei, Baojun Bai, Randall S. Seright, Yin Zhang, David Cercone, Samson Ning

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

Polymer rheology can have either a positive or a negative effect on polymer flooding performance under varied circumstances. Many researchers have studied the effect of polymer rheology in a vertical well, but no field scale studies have been conducted to investigate whether polymer rheology is beneficial to polymer flooding in heavy oil reservoirs developed by horizontal wells. In this paper, we conducted a numerical simulation study to examine the effect of HPAM polymer rheology on a polymer flooding pilot, which is the first-ever project conducted on a heavy oil reservoir from Alaska North Slope (ANS) developed by horizontal wells. Three …

First Ever Polymer Flood Field Pilot To Enhance The Recovery Of Heavy Oils On Alaska's North Slope Pushing Ahead One Year Later, Abhijit Dandekar, Baojun Bai, John Barnes, Dave Cercone, Jared Ciferno, Reid Edwards, Samson Ning, Walbert Schulpen, Randy Seright, Brent Sheets, Dongmei Wang, Yin Zhang

Geosciences and Geological and Petroleum Engineering Faculty Research & Creative Works

In June 2018 the team embarked on an ambitious project to address the slow development pace of Alaska's 20+ billion barrels heavy oil resource via the first ever polymer flood pilot. Following the successful commencement of the pilot in August 2018, the field demonstration, supporting laboratory experiments and numerical simulation have steadily progressed. A significant amount of valuable data and lessons learned have been collected and are reported in this paper. The ongoing pilot and the research activities is making headway toward the primary objective of validating the use of polymer flooding for extracting heavy oil in Alaska's challenging environment. …

Shale Adhesion Force Measurements Via Atomic Force Microscopy, Nikolai Mitiurev, Michael Verrall, Svetlana Shilobreeva, Alireza Keshavarz, Stefan Iglauer

Research outputs 2014 to 2021

Wettability of sedimentary rock surface is an essential parameter that defines oil recovery and production rates of a reservoir. The discovery of wettability alteration in reservoirs, as well as complications that occur in analysis of heterogeneous sample, such as shale, for instance, have prompted scientists to look for the methods of wettability assessment at nanoscale. At the same time, bulk techniques, which are commonly applied, such as USBM (United States Bureau of Mines) or Amott tests, are not sensitive enough in cases with mixed wettability of rocks as they provide average wettability values of a core plug. Atomic Force Microscopy …

Influence Of Rock Wettability On Thf Hydrate Saturation And Distribution In Sandstones, Ghazanfer Raza Abbasi, Ahmed Al-Yaseri, Abubakar Isah, Alireza Keshavarz, Sefan Iglauer

Research outputs 2014 to 2021

Natural gas trapped in hydrate deposits is a potentially enormous source of energy which can in principle be extracted from the underground reservoir structures. These reserves can potentially also catastrophically release very large quantities of greenhouse gases to the atmosphere. One key parameter which is well known to strongly influence fluid distribution, saturation, and production is rock wettability. However, the effect of wettability on gas hydrate in sediments has not been investigated yet. We thus used nuclear magnetic resonance (NMR) spectrometry to measure relaxation times (T₂ and T₁) and the corresponding surface relaxivity of tetrahydrofuran hydrate …

Hydrogen Adsorption On Sub-Bituminous Coal: Implications For Hydrogen Geo-Storage, Sefan Iglauer, Hussein Abid, Ahmed Z. Al-Yaseri, Alireza Keshavarz

Research outputs 2014 to 2021

Hydrogen is a clean fuel that can potentially revolutionize the energy supply chain and decarbonize fuel consumption. However, a key hurdle that needs to be overcome before a full-scale hydrogen economy can be established is hydrogen storage which is currently the main limitation. Here, we propose that hydrogen gas can be stored in underground coal seams, where it adsorbs on the coal surface. However, currently, no hard data related to such a procedure exists. We, therefore, demonstrate experimentally that significant amounts of hydrogen gas can be stored via this route. Hydrogen adsorption capacities reached 0.6 moles H₂/kg of …

Well Performance Analysis Of Mseel1 And Mseel2 Wellpads, Mohammad Faiq Adenan

Graduate Theses, Dissertations, and Problem Reports (ETD)

MSEEL1 and MSEEL2 are wellpads that were developed as a means of conducting research into how a gas well being developed in the Marcellus shale can be optimized from the reservoir identification stage to the completions and operational stage. This thesis provides a report of the workflow performed to use the generated data from different sources and analyze them for optimization.

MIP-3H and Boggess 17H were designated as science wells, for which the majority of the well logging and coring experiments were conducted on. The data obtained from the experiments were used as a basis for petrophysical analysis, the results …

Analyzing And Measuring Petrophysical Properties Of Marcellus Shale, Yahia Mustafa Yassin Mustafa

Graduate Theses, Dissertations, and Problem Reports (ETD)

Unconventional oil and natural gas play a key role in our nation's future. The U.S. has vast reserves of such resources that are commercially viable as a result of advances in horizontal drilling and hydraulic fracturing technology. These technologies enable greater access to oil and natural gas in shale formations. Responsible development of America's shale gas resources offers important economic, energy security, and environmental benefits. Hydraulic fracturing and horizontal drilling apply the latest technologies and make it commercially viable to recover shale gas and oil.

In order to estimate the original gas-in-place, predict the production rates, and optimize the hydraulic …

Application Of Fiber Optics Das On Completion Design Optimization, Aliou Sylla

Graduate Theses, Dissertations, and Problem Reports (ETD)

Interstage communication during well stimulation reducing the effectivity of the well completion is known to be a concern in the oil and gas industry. The leading cause of this is fracture communication due to the presence of natural fractures where the formation is being hydraulically fractured. In this study, a technique was developed to map natural fractures, on a larger scale, underground to be able to avoid the high fracture intensity zones when hydraulically fracturing. This study developed a technique to optimize well completion designs by introducing the ability of locating natural fractures zones in the formation (Marcellus Shale) which …

Investigation Of Post-Acid Stimulation Impacts On Well Performance Using Fracture Modeling And Reservoir Simulation In A Jurassic Carbonate Reservoir, Muaath Alansari

Masters Theses

"Well stimulation (well fracturing) became an essential tool in the Oil and Gas industry to unlock the potential of unconventional reservoirs all over the world and especially in the Middle East. In Kuwait, well stimulation is obligatory when dealing with deep Jurassic carbonate reservoirs. Thus, the well fracture designing process plays a very critical role in determining the success of the stimulation job and the improvement of the recovery.

Several wells stimulated with 20% HCL have shown wide variations in both short and long term well production performance. The research aims to investigate and identify the possible reasons causing these …

Power Generation From Waste Heat During Oil Production, Subrahmanya Chandra Bhamidipati

Masters Theses

"The increase in the world population is causing a significant increase in the global demand for energy. This rise in demand is generally met with the use of fossil fuels. But there is considerable pressure to lessen the release of carbon through the combustion of fossil fuels. One way that the oil and gas industry can provide increased energy without carbon combustion is by extracting the latent heat energy contained in produced oil, gas and water from producing reservoirs, and from water which is cycled through depleted, end-of-life or abandoned reservoirs. Extracting this energy and using it to provide direct …

Relationships Among Mineralogy, Geochemistry, And Oil And Gas Production In The Tuscaloosa Marine Shale, Hayley Roxana Beitel

Masters Theses

"The Tuscaloosa Marine Shale (TMS) is an unconventional shale reservoir located in southeast Louisiana and southwest Mississippi. Limited mineralogical and geochemical data for the TMS have been published. The data that do exist indicate that the formation is heterogeneous. Consequently, previous investigators and oil and gas companies have not managed to effectively link mineralogical and chemical changes to oil and gas production in the TMS. These linkages are critical to establish for future exploration efforts. In this study, we attempt to establish these relationships by gathering all existing mineralogical and chemical data in the TMS, including newly acquired data from …

Analysis Of Refracturing Activities In The Major Shale Plays In The United States, Faisal Shammam

Masters Theses

"Refracturing of existing horizontal multistage wells has increased over the past decade in the oil industry. This work aims to investigate all the refracturing operations in the most active shale plays in the united states (Bakken, Niobrara, Marcellus, Permian, Eagle Ford, Barnett, and Haynesville) in terms of completion technique, candidate selection, treatment types, and refracturing production efficiency. To collect the data of the refractured wells, an advanced data analytics approach was applied to separate the refractured wells from 170,000 wells reported in FracFocus, a public chemical registry for hydraulic fracturing in the United States, and combine it with DrillingInfo database, …

Geochemical Study Of The Early Cretaceous Fahliyan Oil Reservoir In The Northwest Persian Gulf, Abbas Khaksar Manshad, Reza Sedighi Pashaki, Jagar A. Ali, Stefan Iglauer, M. Memariani, Majid Akbari, Alireza Keshavarz

Research outputs 2014 to 2021

Three crude oil samples from the Fahliyan Formation in ‘KG’ and ‘F’ fields in the northwest Persian Gulf, namely KG-031, F9A-3H and F15-3H for the geochemical study. In this study, the physicochemical properties, gas chromatography (GC, GC Mass) and (Detailed Hydrocarbon Analysis) DHA analyses for the collected Fahliyan oils were carried out. The API, Trace Element (Ni, V) and S% parameters indicated that the Fahliyan oil was generated from a source rock which deposited in reducing environment condition with a carbonate-shale compound lithology. Moreover, low pour point, higher S% and low viscosity parameters of “KG” sample confirmed the existence of …

Characterization And Analysis Of Naturally Fractured Gas Reservoirs Based On Stimulated Reservoir Volume And Petro-Physical Parameters, Ali Al-Rubaye, Ahmed Al-Yaseri, Muhammad Ali, Hisham Ben Mahmud

Research outputs 2014 to 2021

© 2021, The Author(s). Fracture is one of the most important geological phenomena that affect the production of hydrocarbon compounds in broken carbonate reservoirs. However, fracture controlling factors must be combined with well data to achieve accurate fracture modeling. Therefore, structural data, drilling data, well flow diagrams, cores data, wells production data, and dynamic reservoir data have been considered here. Finally, by combining the above-mentioned information and through statistical and mathematical methods, the mechanism of fracture creation, general trends, and dominant fracture patterns are determined. These patterns are directly related to the tectonic regime and the stresses governing the region. …

Enhanced Oil Recovery By Hydrophilic Silica Nanofluid: Experimental Evaluation Of The Impact Of Parameters And Mechanisms On Recovery Potential, Tariq A. Chandio, Muhammad A. Manan, Khalil R. Memon, Ghulam Abbas, Ghazanfer R. Abbasi

Research outputs 2014 to 2021

Nanofluids as an EOR technique are reported to enhance oil recoveries. Among all the nanomaterial silica with promising lab results, economic and environmental acceptability are an ideal material for future applications. Despite the potential to enhance recoveries, understanding the two-fold impact of parameters such as concentration, salinity, stability, injection rate, and irreproducibility of results has arisen ambiguities that have delayed field applications. This integrated study is conducted to ascertain two-fold impacts of concentration and salinity on recovery and stability and evaluates corresponding changes in the recovery mechanism with variance in the parameters. Initially, silica nanofluids’ recovery potential was evaluated by …

Physicochemical Characterisation Of Zirconia Nanoparticles Based Sodium Alginate Polymer Suspension For Enhanced Oil Recovery, Udit S. Mohanty, Faisal Ur Rahman Awan, Muhammad Ali, Adnan Aftab, Alireza Keshavarz, Sefan Iglauer

Research outputs 2014 to 2021

Biopolymers have been employed in enhanced oil recovery (EOR) due to their high viscosity and significant effects on waterflooding performance. Sodium alginate (NaAlg) is an excellent biopolymer that is extracted primarily from brown algae. It has been used in the biotechnology industry as a thickening agent, colloidal stabilizer, and oil recovery application. In the present study, a series of sodium alginate/zirconium oxide nanoparticle suspensions were prepared via solution mixing, and the effect of nanoparticle content, polymer concentration, temperature, salinity was investigated on the rheological behavior using a concentric cylinder dynamic rheometer. The rheology results revealed that the lower concentration of …

The Impacts Of The Net Stress And Stress Shadow On The Productivity Of Marcellus Shale Horizontal Well, Mohamed El Sgher

Graduate Theses, Dissertations, and Problem Reports (ETD)

Shale gas development has become a crucial part of the global oil and gas industry in recent years, especially in North America. Even though the application of horizontal drilling and hydraulic fracturing techniques have successfully unlocked considerable reserves of natural gas in shale-gas reservoirs, production rates from unconventional reservoirs decline more rapidly than conventional reservoirs. This is because production from a reservoir results in an increase in net stress due to a reduction in the pore pressure, while overburden pressure remains constant. This leads to the reduction in permeability of both the matrix and the fissures, as well as the …

Evaluation Of Robust Epoxy Resin Sealants For Wellbore Integrity Applications, Mohammed Mousa M Alkhamis

Doctoral Dissertations

"During the drilling and completion phases of oil and gas wells, cement is placed in the wellbore as a barrier between the casing and the formation. All casing strings must be cemented to protect and support the casing, and to isolate production zones. The primary cement must prevent the wellbore fluids from migrating in an annular flow path so as to allow the wells to be utilized without any control problems. The primary cement may fail to deliver full zonal isolation due to several reasons such as insufficient mud removal before the cementing, casing expansion, and contraction, high fluid losses, …

Enhanced Heavy Oil Recovery By Low Salinity Polymer Flood Combined With Microgel Treatment, Yang Zhao

Doctoral Dissertations

“Heavy oil resources account for a large portion of the total oil reserves around the world. The target heavy oil reservoir is located on Alaska’s North Slope (ANS). Advantages of low-salinity HPAM polymer (LSP) over high-salinity polymer (HSP) were demonstrated. LSP could recover more oil with 40% less polymer consumption. No additional oil was recovered by HSP after LSP flood. The first-ever polymer flood pilot on ANS showed remarkable success regarding water cut reduction, oil production increase, delayed breakthrough, and projected oil recovery improvement. Polymer alone was insufficient to achieve satisfactory recovery as the reservoirs were highly heterogeneous. Microgels could …

Downhole Water Drainage From A Gas Reservoir For Water Dumpflood In An Underlying Oil Reservoir, Htet Myet Zin Naing

Chulalongkorn University Theses and Dissertations (Chula ETD)

For wells drilled in a bottom water-drive gas reservoir, water coning may lead to a considerable amount of water production which diminishes the gas recovery. If the gas reservoir has an oil reservoir underneath, a method called “Downhole Water Drain for Water Dumpflood” (DWDDF) can be performed to drain water from the aquifer underneath the gas reservoir and dump it into the oil reservoir to perform waterflooding. DWDDF technique can help increase gas production from the upper gas reservoir and oil production from the lower reservoir at the same time. In this study, a simple reservoir model having common rock …

Quality Control Of Chemical Grade Calcium Carbonate From Lopburi Limestone Deposit In Thailand, Pimpichcha Teawpanich

Chulalongkorn University Theses and Dissertations (Chula ETD)

Calcium carbonate (CaCO3) is naturally produced from calcite, limestone, chalk, and marble. It is being used as raw material in various industries (e.g., cement, plastic, paint, paper, and pharmaceutical industries). The low-grade CaCO3 samples obtained from a calcite plant at Khoktum Sub-district, Muang Lopburi District, Lopburi Province, Thailand were used in this study. These samples contain more than 98% of CaCO3 while Fe2O3 contents are higher than 0.1% and increased after finished the process. Because of this problem, the products could not be sold since lower Fe2O3 contents are required (e.g., ≤0.05% for filler grade and ≤ 0.1% for animal …

Effects Of Clay Minerals On Oil Recovery Mechanism In Low Salinity Waterflooding In Shaly-Sandstone Formation, Tri Yudha Putra

Chulalongkorn University Theses and Dissertations (Chula ETD)

Low Salinity Waterflooding (LSWF) is one of Enhanced Oil Recovery (EOR) techniques that are often mentioned nowadays. Several studies showed that injecting low salinity water leads to Multi-component Ion Exchange (MIE) which is one of oil recovery mechanisms provided by this technique. This study was performed to investigate the effects of specific clay mineral in rock and ion in injected water. First, representative clays were analytically tested to ensure their mineral compositions and the selected representative clays were tested by filtration with different water formulations to identify ionic capacities in MIE for each clay. Results obtained from filtration test and …

ไฮโดรทรีตติงของน้ำมันปรุงอาหารใช้แล้วเป็นเชื้อเพลิงชีวภาพบนตัวเร่งปฏิกิริยา Ni-Mo แบบไม่มีตัวรองรับและมีตัวรองรับ, เดชพล แปรงกลาง

Chulalongkorn University Theses and Dissertations (Chula ETD)

งานวิจันนี้มุ่งเน้นการศึกษาไฮโดรทรีตติง (hydrotreating) ของน้ำมันปรุงอาหารใช้แล้วบนตัวเร่งปฏิกิริยาซัลไฟด์ของนิกเกิลโมลิบดินัม (NiMoS2) แบบไม่มีตัวรองรับและมีตัวรองรับเตรียมโดยวิธีการสลายตัวต้วยความร้อน (hydrothermal) ตัวแปรของการศึกษานี้คือ ความเข้มข้นของสารตั้งต้น เวลาและอัตราส่วนอะตอม Ni/(Ni+Mo) ที่มีผลต่อผลได้และการเลือกเกิดอัลเคน จากผลการวิจัยพบว่า ผลิตภัณฑ์หลักที่ได้จากไฮโดรทรีตติงคือสารประกอบนอร์มัลอัลเคน n-C15, n-C16, n-C17 และn-C18 การเพิ่มความเข้มข้นของน้ำมันปรุงอาหารใช้แล้วมีผลทำให้ปฏิกิริยาเกิดไปทางดีคาร์บอกซิเลชันและดีคาร์บอนิลเลชันได้มากกว่าไฮโดรดีออกซีจีเนชัน ตัวเร่งปฏิกิริยาที่มีประสิทธิภาพสูงสุดให้ร้อยละผลได้ของ n-C15-18 คือ 0.2-NiMoS2/γ-Al2O3 ที่เตรียมด้วยวิธีการสลายตัวด้วยความร้อนสำหรับไฮโดรดีออกซิจีเนชัน ภายใต้สภาวะที่เหมาะสม คือที่อุณหภูมิ 300 องศาเซลเซียส ความดันไฮโดรเจนเริ่มต้น 40 บาร์ เวลาของปฏิกิริยา 3 ชั่วโมง ความเข้มข้นของสารตั้งต้นร้อยละ 5 โดยน้ำหนัก อัตราส่วนของตัวเร่งปฏิกิริยาต่อสารตั้งต้นคือ 0.15 (w/w) สำหรับไฮโดรทรีตติงของน้ำมันปาล์มใช้แล้วให้ร้อยละผลได้ของ n-C15-18 คือ ร้อยละ 55.1 โดยมวล (n-C15 = 6.7% n-C16 = 14.5% n-C17 = 11.8% และn-C18 = 22.1%) สำหรับไฮโดรทรีตติงน้ำมันถั่วเหลืองใช้แล้วให้ร้อยละผลได้ของ n-C15-18 คือ ร้อยละ 56.9 โดยมวล (n-C15 = 3.8% n-C16 = 6.7% n-C17 = 17.2% และn-C18 = 29.2%)

การขจัดพอลิไซคลิกแอโรมาติกไฮโดรคาร์บอนในน้ำมันไพโรไลซิสที่ได้จากขยะพลาสติกผ่านกระบวนการไฮโดรจิเนชัน, ปวริศา นาคศรี

Chulalongkorn University Theses and Dissertations (Chula ETD)

สารประกอบพอลิไซคลิกแอโรมาติกไฮโดรคาร์บอน (polycyclic aromatic hydrocarbons, PAHs) เกิดจากปฏิกิริยาไดเอลส์-แอลเดอร์แอโรมาไทเซชัน (Diels- Alder aromatization) ในขั้นตอนการไพโรไลซิสของขยะพลาสติก ทำให้น้ำมันไพโรไลซิสจากขยะพลาสติก (waste plastic pyrolysis oil, WPPO) มีความเป็นพิษต่อสิ่งแวดล้อมในด้านการเกิด PM2.5 และเป็นอันตรายต่อร่างกายของสิ่งมีชีวิต ดังนั้นงานวิจัยนี้มีวัตถุประสงค์เพื่อศึกษาผลของตัวแปรต่างๆ เพื่อลดปริมาณ PAHs ใน WPPO ผ่านกระบวนการไฮโดรทรีตเชิงเร่งปฏิกิริยา และศึกษาสมบัติทางกายภาพและความร้อนของ WPPO ก่อนและหลังการกำจัด PAHs ด้วยเครื่องปฏิกรณ์แบบแบตช์โดยใช้ตัวเร่งปฏิกิริยานิกเกิลบนตัวรองรับเอสบีเอ 15 (Ni/SBA-15) และอะลูมินัมเอสบีเอ 15 (Ni/AlSBA-15) ที่อัตราส่วนโดยโมลของซิลิกาต่ออะลูมินัมเป็น 30 และ 50 ที่มีการเติมและไม่เติมกรดเอทิลีนไดอามีนเตตราอาเซติก (EDTA) สำหรับภาวะที่ศึกษาในการไฮโดรจิเนชัน ได้แก่ ระยะเวลาในการทำปฏิกิริยา (1-4 ชั่วโมง) อุณหภูมิ (250-325 องศาเซลเซียส) ความดันไฮโดรเจนเริ่มต้น (20-50 บาร์) และปริมาณตัวเร่งปฏิกิริยา (5-20 %โดยน้ำหนัก) ก่อนทำปฏิกิริยาตัวเร่งปฏิกิริยาถูกรีดักชัน (reduction) แบบเอ็กซ์-ซิทู (ex-situ) ที่ 550 องศาเซลเซียส เป็นเวลา 2 ชั่วโมง พบว่าเมื่อทำปฏิกิริยาไฮโดรทรีตติ้งในเครื่องปฏิกรณ์แบบแบตช์ที่อุณหภูมิ 300 องศาเซลเซียส ภายใต้ความดันไฮโดรเจนเริ่มต้นที่ 40 บาร์ เป็นเวลา 2 ชั่วโมง ตัวเร่งปฏิกิริยา Ni/SBA-15 สามารถลดปริมาณ PAHs ลงได้ถึง 84.6% ขณะที่ตัวเร่งปฏิกิริยาอื่นสามารถลดปริมาณ PAHs ได้น้อยกว่า จึงถูกเลือกมาใช้ในการไฮโดรทรีตติ้งเพื่อหาภาวะที่ดีที่สุด พบว่าภาวะที่ดีที่สุดในการลดปริมาณ PAHS โดยใช้ไฮโดรเจนเริ่มต้นที่ 40 บาร์ 300 องศาเซลเซียส เป็นเวลา 3 ชั่วโมง การใช้ตัวเร่งปฏิกิริยา Ni/SBA-15 สามารถลดปริมาณ PAHs ใน WPPO …