10^th Asia Pacific Congress on Oil and Gas December 03-04, 2018 Bangkok, Thailand

Biography:

I am SAGNA Koffi, Ph.D., Assistant Professor at University of Lomé, Faculty of Sciences, Department of Physics and making my research works in Laboratory on Solar Energy, UNESCO Chair on Renewable Energy Lomé-TOGO since the year 2014. I am an author of more than five scientific papers published in good indexed and abstracted Journals. The main results of my research are on Dropled evaporation in subcritical and supercritical pressure, Modeling of the Solar Potential, Simulation, and Prediction of the Power Output and the Photocurrent for Photovoltaic Systems and on Environmental Pollution due to the Operation of Gasoline Engines.

Abstract:

We investigate the law of exhaust gases in order to control the pollution that is increasingly present in our daily lives. Pollution is a degradation of the environment by non-natural materials in several environments constituting our universe. Thus, it intervenes as well in water, in the air as in the soil. It is mostly due to human activities, especially in urban areas and industrial areas, and the massive use of automobiles based on gasoline engines. The results show that this pollution is due in part to the existence of a mass and thermal discontinuity characterized by shock waves which occur during the evaporation process precursor of the incomplete combustion in the combustion chamber of the engines [1, 2]. By analytical approach, we establish in this paper the law φ of the exhaust gases in poor and rich reaction media during combustion in the combustion chambers of gasoline engines in order to propose the ranges of an adequate proportion of elements additive to the petrol. These engines, in operation, release various gaseous pollutants such as carbon dioxide, oxides of carbon and nitrogen, unburnt hydrocarbons, which undoubtedly contribute to the nuisance and the pollution of our environment.

Biography:

Chinmoy Dutta is an M.Tech student specialized in Petroleum Exploration & Production Department under Dibrugarh University, India. His interested area of research is the Enhanced oil recovery of Petroleum. In 2017 He published a paper titled "Phase behavior study for Chemically Enhanced water flooding" international journal IJESM, Volume 6, Issue 7, November 2017. He also presented two paper in an oral presentation in two different international conferences. This approach is responsive to surfactant and alkali flooding in EOR analyzed with the Low saline brine.

Abstract:

The discovery of new oil reserves has steadily declined over the years, so increasing the recovery factors from the oil fields is the only logical way to meet the growing demands. With this objective, the different enhanced oil recovery (EOR) methods are designed. It has been observed that oil recovery by water flooding is influenced by the salinity and composition of injected water. Although low saline waterflooding (LSW) has the potential to recover additional oil, its recovery is less compared to chemical and gas EOR methods. The purpose of this study is to investigate the EOR potential of the novel low saline water-alkaline-surfactant/alternated/CO₂ (LSWASG) method in an oilfield of Assam, India. Reservoir cores and crude oils from an Upper Assam depleted oilfield were analyzed for their characterization and for preparing the synthetic formation brine (SFB). Chemical formulations that will best recover crude oil were next screened based on interfacial tension (IFT) measurements. Finally, lab-scale core flooding experiments were conducted to evaluate the oil recovery potential of the proposed method. From the core-flooding experiments, it was observed that secondary waterflooding of crude oil saturated core plugs resulted in the recovery of about 33% oil initially in place (OIIP). Additional oil recovery by low saline waterflooding in the tertiary mode was 4.8 % OIIP.  However, the oil recovery with LSW combined with the selected formulation (0.5 wt% SDS + 1 wt% Na₂CO₃) with and without alternated CO₂ gas injection increased to 19.34% and 22.57% OIIP respectively. Higher oil recovery by the synergic combination of LSW, chemicals and CO₂ gas, highlighted the EOR potential of the novel LSWASG process in the Assam oilfield producing medium gravity crudes.

Biography:

Harshit Sharma is a Research Associate in the Exploration and Production group and is based in Lux Research’s Singapore office. His research focuses on technological developments and market trends impacting the oil and gas industry. Harshit has deep expertise in key emerging technologies, such as the digital oilfield, natural gas technology, and additive manufacturing.

Prior to joining Lux Research, Harshit designed and manufactured completion tools as an R&D Engineer at Halliburton. Specifically, his work led to new innovations in liner hanger and swell packer technologies.

Harshit received his M.S. from the National University of Singapore in Mechanical Engineering with a focus on offshore technology.

Abstract:

The use of data analytics, and the loosely defined 'Digital Oilfield' has been one of the most talked about emerging technologies in the oil and gas industry for the last decade or so. The industry has more than embraced these innovations, and is now exploring the next big breakthrough for digitizing its operations.

Harshit Sharma will present:

• A technology roadmap of how the future, digital oil and gas industry will look like by 2030
• Identifying key movers and players who are accelerating this renovation
• Debate the likely challenges and issues which need resolving for the industry’s subsequent advance

Biography:

Abstract:

Oil Producing as well as consuming nations of the world must rise up to the challenge of environmental pollution due to spillage of both crude and refined hydrocarbon products. The devastating effect of crude oil on both living and non living components of the environment is something that deserves serious attention. For a cost-effective and sustainable restoration of the nonliving environment, some wasted materials were assessed in this work. Experiments were conducted to determine the nutritional contents of some selected wastes with a view to assessing their effect in bacterial degradation of Bonny light crude oil. Samples of sewage sludge, Chicken droppings and cow dung were obtained and processed. Crude protein, fat, fibre, ash, Phosphorus and trace metals contents of the wastes were determined using standard procedures. The results obtained revealed that the wastes contained appreciable essential nutrients like Nitrogen, Phosphorus, Magnesium, Manganese and Zinc.  Significant difference (P<0.05) between the wastes was noted in all the determinations made except in Phosphorus content.  Soil and water samples were collected from the garden farm.  Crude oil-degrading bacteria were isolated from these samples using selective enrichment technique. The isolates included Bacillus megaterium and Bacillus licheniformis.  The bacteria were used in crude oil degradation experiment. The residual crude was extracted after degradation and subjected to chromatographic analyses using GC-MS methods. A significant reduction (P<0.05) in heavy metals, Total Petroleum Hydrocarbons and Polycyclic Aromatic Hydrocarbons was achieved.

Biography:

Zhigang Chen is a postgraduate in China University of petroleum, China, his major is oil and gas engineering. Haijun Fan is an assistant professor at China University of petroleum, China. His research interests are about Optimization of secondary recovery, unconventional reservoir engineering, GIS application in reservoir engineering, software development in oil & gas reservoir engineering, he has published more than 20papers.

Abstract:

The determination of reserves is a fundamental calculation in reservoir engineering. The material balance method uses actual reservoir performance data and therefore is generally accepted as the most accurate procedure for estimating original hydrocarbons-in-place (OGIP). In order to generate a traditional material balance plot, the well is shut in at several points during its producing life to obtain the average reservoir pressure. The flowing material balance uses the concept of boundary-dominated flow or pseudo-steady-state flow, as well as flowing pressures and rates to calculate original hydro-carbons-in-place. This paper presents the OGIP calculation of vertical-single fracture gas reservoir with flowing material balance analysis. In this paper, firstly calculate the time of Boundary-Dominated Flow to begin, then combine the values of flowing p/z and Agarwal-Gardner flowing material balance only needs to estimate OGIP. The calculation only needs the data of flowing pressures and rates . The calculation results show that the method is simple and feasible to calculate OGIP of vertical-single fracture gas reservoir.

Biography:

Zisis Vryzas is an Assistant Professor in the Industrial and Mechanical Engineering Department (Petroleum Engineering Program) at the Lebanese American University. He received his Ph.D. in chemical/petroleum engineering from the Aristotle University of Thessaloniki. He also an executive doctorate of business administration from the Paris School of Business, and an MSc in petroleum engineering from the UK’s Heriot-Watt University. He received his BSc and MSc in environmental engineering from Technical University of Crete, Greece. His research interests lie in the area of the development of “smart” drilling fluids and their interactions with rock formations, rheology of complex fluids and nanotechnology for oil and gas applications. He has authored or coauthored more than 30 journal articles and conference proceedings and has been serving as a reviewer in several reputed Journals. Vryzas is an active member of SPE and EAGE.

Abstract:

Biography:

Abstract:

A new thermal technique called Moving Riser Method (MRM) was proposed recently for harvesting natural gas from seabed gas hydrates. The objective of this paper is to present the result of a feasibility study of the new technique to serve as a base for decision making and system design. Technical, economical, and environmental issues of the applying the MRM are addressed. The efficiency of harvesting natural gas from seabed gas hydrates using Moving Riser Method depends on the deliverable temperature of hot water injected to the surface of gas hydrate deposit at seafloor. Coupled governing equations for the temperature profiles in the inner pipe and annulus were formulated for countercurrent two-phase fluid flow. The equations were solved analytically to determine the total heat loss and the deliverable temperature of the hot water at the seabed level. The principle of energy balance was used to predict gas production rate. A 3-D heat transfer model was employed to analysis gas leak possibility. The study concludes that with today’s pipe insulation technology water temperature drops only a few degrees from sea surface level to the seafloor level of 800 m deep along an insulated vertical pipe. The injected water at seafloor level will be hot enough to dissociate gas hydrate. Gas production at commercial rate is achievable with affordable gas consumption rates to generate hot water. The level of gas production rate is proportional to the rate at which natural gas is combusted for hot water generation. The gas production to gas combustion ratio (PCR) is greater than 4. The PCR increases slightly with gas combustion rate. Even the gas production ship stays at the same location for over 40 hours, the water-hydrate boundary will still be within 0.9 meter of the hot water injection point. Therefore it is possible to use a gas collector of reasonable size (e.g., 2m in diameter) to gather all dissociate gas from the hydrate deposit. Result of this investigation shows that harvesting natural gas from gas hydrate at seabed with the MRM is technically viable, economically feasible, and environmentally safe. This paper the first time presents a feasibility study to address technical, economical, and environmental issues in applying the Moving Riser Method to harvesting natural gas from gas hydrates on the seafloor. It will help engineers in the petroleum industry in decision making and system design for producing natural gas from gas hydrate deposits at seabed.

Biography:

Abstract:

Biography:

Murtala Maidamma Ambursa has completed his Ph.D. at the age of 38 years from University of Malaya, Malaysia and currently a lecturer in the department of chemistry, kebbi state university of science and technology Aliero, Nigeria. He has published many papers in reputed journals.      

Abstract:

The role of catalysts for hydrodeoxygenation of bio oil to bio-fuels is highly tremendous. Also evaluating bio oil model compounds mixtures will give an insight into competitive adsorption effect on catalytic performance during hydrodeoxygenation of lignin derived bio oil. This research work reported Cu-Ni/TiO₂ with high activity and hydrocarbons selectivity in hydrodeoxygenation of lignin derived bio oil model compounds mixtures (Guaiacol, Anisole and Cresol). Various Cu-Ni/TiO₂ with different Ni loading were synthesized by impregnation methods and after calcination, activation these catalysts were optimized by catalytic activity of this mixture at 260^oC, 10MPa and 6hours of reactions. The physico-chemical parameters of the most perfoming Ni loaded samples were characterized by Raman spectroscopy, XRD, FESEM, EDX and H₂-TPR analysis. The catalytic activity of 10% Ni loaded catalysts was found to be highest with 95.78% mixture conversion and hydrocarbons selectivity of 62.54% than 7.5% and 12.5% Ni loaded catalysts with 76.92% and 79.44% conversion as well as 49.54% and 51.04% hydrocarbons selectivity. The catalysts structure-activity correlations revealed that, the catalytic performance correlate well with dispersions and reducibility of Cu-Ni species. The investigated catalytic reactions pathway for the associated model compounds of the mixture revealed that, the conversions of model compounds to cyclic hydrocarbons proceed by demethoxylation, dihydroxylation and demethylation pathways with methyl group transfer. Thefore, direct deoxygenation-hydrogenation pathway predominates hydrogenation-dehydration pathways in hydrodeoxygenation of lignin derived bio oil model compounds mixtures (Guaiacol, Anisole and Cresol) over10% Ni loaded Cu-Ni/TiO₂ catalysts under the tested conditions.

Biography:

Dr. A K Rabiu has completed his Ph.D. in Chemistry from the University of Manchester, UK in 2017. He has published papers in reputable journals. He is currently a lecturer at the Kebbi State University of science and technology Aliero, Nigeria. 

Abstract:

The need for clean bioenergy is tremendously increasing due to population increase as well as negative effect of fossil derived fuel, which includes its non-renewability and greenhouse gas (carbon dioxides) emission. In this regard, lignin biomass has been considered as a promising renewable feedstock toward fuel and chemical transformations particularly through hydrodeoxygenation pathway. In this work, catalytic hydrodeoxygenation of syringyl (as lignin model compounds) to saturated hydrocarbon was studied. To actualize this, spherical mesoporous support was first synthesized by hydrothermal method and physico-chemically characterized by XRD, FTIR, BET surface area, FESEM and UV Visible spectrophotometer. The mesoporous support was then impregnated with nickel nitrate, dried and calcined to obtained highly dispersed supported nickel oxide species as revealed by XRD, BET surface area, FESEM and TPR. The obtained catalyst was reduced and its reducibility was investigated by XPS analysis. Activity study was conducted in high-pressure stainless steels autoclave at 250 ^oC, 80 bar and 5 hrs. reaction time. The result showed the formation of Ti-MCM-41 with tetrahedral coordination and Ni/Ti-MCM-41 catalysts. The results of the activity studies indicate maximum conversion of 90.56% with good selectivity to saturated hydrocarbons of 60.82%, which indicates its potential for hydrodeoxygenation of Lignin biomass to saturated hydrocarbon molecules suitable as transportation fuel.

Biography:

Dr. Yahui Zhang joined the Department of Process Engineering at Memorial University of Newfoundland as an assistant professor in 2016. He earned his first Ph.D. degree in Mineral Processing from the Central South University, China, in 1996, and second Ph.D. degree in Materials Engineering from the University of Alberta, Canada, in 2005. He has published more than 80 papers in peer-reviewed journals and conference proceedings and filed 13 patent applications, of which might have been granted.

Abstract:

Usually, 60% to 80% of crude oil remains in a reservoir after traditional primary and secondary recoveries. To extract the majority of original oil left, various enhanced oil recovery (EOR) technologies have been developed, which can be categorized into thermal recovery, gas injection, and chemical injection. To take advantages of the chemical properties of the oil reservoir system and combine the merits of developed EOR technologies, a novel brine electrolysis process for EOR is presented. The major products generated in brine electrolysis, i.e., NaOH, H₂ gas and Cl₂ gas, are all very effective for improving oil recovery due to their strong cleaning effects on oil reservoir. This brine electrolysis process combines the advantages of gas injection and chemical injection (alkali injection). Thermodynamically, a low applied potential, i.e., a potential over 1.36v (under standard conditions), can realize the electrolysis process. The characteristic of the brine electrolysis process is that the chemical properties of the reservoir brine and its electrolysis products are considered and fully employed. Compared with the highly effective alkaline (NaOH) flooding process, for the presented brine electrolysis process, the material for alkaline (NaOH) production is from the bine in the reservoir system. Thus, there are no costs for material and product transportation, and processes such as crystalizing, drying and packaging can be saved. It is more economical and effective than the alkali flooding process. The technological issues involved in this new process are easy to realize and environmentally feasible. It will be a highly effective and promising EOR technology.

Biography:

Nadine completed her Master studies at the University of Vienna in September 2016. Afterwards she started working as a doctoral researcher at the Department of Materials Chemistry at the University of Vienna. Since February 2014 she has been working on DNA Tracers in the Polymer & Composite Engineering Group (PaCE).           

Abstract:

The demand for robust chemical flow tracer systems to map fluid flow and fluid distributions for various geological reservoirs or to trace wastewater effluent leakage from landfill sites or contaminated surface water is increasing. In oil and gas industry, for instance, in hydraulic fracturing treatments, chemical flow tracers are often used to map fluid flow or to gain information about the reservoir geology, connectivity, and efficiency of drilling sites. Unambiguously identifiable tracers which survive the harsh fracturing conditions can be added to hydraulic fluid systems and can give a complete picture about the connectivity and efficiency of different drilling sites. We propose a DNA-based robust tracer system. DNA was encapsulated into polystyrene, which was co-polymerised with a cross-linker. Therefore, artificial single-stranded DNA (ssDNA) was complexed to protect and transfer it from the aqueous phase into the monomer phase. A mini-emulsion was formed and polymerized, which resulted in an aqueous suspension of DNA containing, cross-linked polystyrene nanoparticles. Cross-linking the polymer enables selective release of the DNA from the nanoparticles by hydrogenation of the cross-links via Raney-Nickel. The recovered ssDNA was identified and quantified via quantitative real-time Polymerase Chain Reaction (qPCR).

Biography:

Abstract:

Emulsion-based drilling fluids became an important class of drilling fluid system which developed significance in modern Drilling Operations. Various wellbore instability problems such as differential pipe sticking, shale swelling etc. were minimized using emulsion mud systems. But with the increase in strict environmental regulations, the use of toxic muds eg. Diesel based drilling muds were reduced.
Being toxic, the disposal of cuttings into the environment is a major issue faced by the drilling industries. To overcome this issue, an attempt has been made to develop an oil-in-water emulsion mud system using castor oil and gum acacia as an emulsifier. The effect of oil, Xanthan Gum, Starch, Salt on the rheological properties and fluid loss control property of the developed system was analyzed thoroughly. NaOH was added to the system to maintain the pH. High shale recovery performance was obtained with the system during shale recovery test. It was found that the addition of Propylene Glycol has enhanced the stability of the emulsion mud system. Hence the developed castor oil-in-water emulsion mud system has a great prospect in the development of emulsion muds desired for the drilling of oil wells.

Biography:

Abstract:

Biography:

Chaohua Guo, Ph.D. Associate Professor at Department of Petroleum Engineering in China University of Geosciences (Wuhan). He has completed his Ph.D. from Missouri University of Science and Technology, U.S.A. He has published more than 10 journal papers in reputed journals as the first author and has been serving as an editorial board member of repute.

Abstract:

Development of unconventional shale gas reservoirs (SGRs) has been boosted by the advancements in two key technologies: horizontal drilling and multi-stage hydraulic fracturing. A large number of multi-stage fractured horizontal wells (MsFHW) have been drilled to enhance reservoir production performance. Gas flow in SGRs is a multi-mechanism process, including desorption, diffusion, and non-Darcy flow. The productivity of the SGRs with MsFHW is influenced by both reservoir conditions and hydraulic fracture properties. However, rare simulation work has been conducted for multi-stage hydraulic fractured SGRs. Most of them use a well testing method, which has too many unrealistic simplifications and assumptions. Also, no systematical work has been conducted considering all reasonable transport mechanisms. And there are very few works on sensitivity studies of uncertain parameters using real parameter range. Hence, a detailed and systematic study of reservoir simulation with MsFHW is still necessary.

In this paper, a dual porosity model was constructed to estimate the effect of parameters on shale gas production with MsFHW. The simulation model was verified with the available field data from the Barnett Shale. Following mechanisms have been considered in this model: viscous flow, slip flow, Knudsen diffusion, and gas desorption. Langmuir isotherm was used to simulate the gas desorption process. Sensitivity analysis on SGRs’ production performance with MsFHW has been conducted. Parameters influencing shale gas production were classified into two categories: reservoir parameters including matrix permeability, matrix porosity; and hydraulic fracture parameters including hydraulic fracture spacing, and fracture half-length. Typical ranges of matrix parameters have been reviewed. Sensitivity analysis has been conducted to analyze the effect of the above factors on the production performance of SGRs. Through comparison, it can be found that hydraulic fracture parameters are more sensitive compared with reservoir parameters. And reservoirs parameters mainly affect the later production period. However, the hydraulic fracture parameters have a significant effect on gas production from the early period. The result of this study can be used to improve the efficiency of the history matching process. Also, it can contribute to the design and optimization of hydraulic fracture treatment design in unconventional SGRs.

Biography:

Abstract:

This paper describes a three-dimensional torque and drag model for elastic drill string in a drilling wellbore with any trajectory profile.

The following forces are taken into account in the transient T&D model with taking into account;

• Inertia forces on drill string during acceleration/deceleration of pipe when drill string will start moving from a stationary position and when it stops from movement.
• Hydrodynamic viscous drag force
• Pressure (or Pressure-Area) forces; forces acting on drillstring due to change in cross-sectional area of pipe/BHA elements)
• Dynamic Buoyancy forces (i.e. buoyancy effect based on dynamic pressure in the well)
• Frictional forces – drag in 3D based on Coloumb friction
• Weight force in 3D profile

The drillstring dynamic model is coupled with transient ROP model. The ROP will change based on formation hardness, Bit rotational RPM and pump flow rate.

Weight-on-Bit and Torque-on-Bit will be calculated based on drillpipe stretching/compression and drillstring tortuosity (i.e. twisting angle) respectively.

The model was used for real-time simulation of drillstring to understand the mechanical behaviour of a drillstring in exploratory wells in a field in UK sector of North Sea. The torque and drag data then was compared with real field data and the deviation was in a negligible order of magnitude.