Day 1 :
Keynote Forum
Chen Gaofei
PhD, Chinese Academy of Sciences, China
Keynote: Biogas recovery process with the products of both LNG and liquid carbon dioxide
Time : 10:30-11:00
Biography:
Dr Chen Gaofei has his expertise and passion in LNG technologies, especially the refrigeration technology. He worked in the Technical Institute of Physics and Chemistry, Chinese Academy of Sciences since his graduation of doctor. The research team he is in has developed a series of mini-scale mobile natural gas liquefiers for the recovery of unconventional gas. Dr Chen has been in charge of the research and development of heat exchangers and coldboxes.
Abstract:
Methane and carbon dioxide are the essential components in Biogas. The prevailing biogas recovery technology is purification and producing natural gas for pipeline transportation or further road transportation. It means all other components including carbon dioxide would be removed from biogas first. Related processes, especially the removal of carbon dioxide, would increase the cost, which is vital for the small-scale biogas recovery. To make the recovery of small-scale biogas both inexpensive and practicable, authors of this work developed a new process, which use refrigeration technology combined with distillation process to make two products, Liquefied Natural Gas (LNG) and liquid carbon dioxide. A simulation process was built to analyze the power comsuption and certain economic evaluation was made. Comparison with traditional recovery process were also made for both energy efficiency and profitability. Application of the new process integrated purification, cooling and rectification is an excellent recovery option for scattered small-scale biogas resource.
- Oil Refining and Marketing
Location: Buenos Aires, Argentina
Session Introduction
Ehsan Heshmati
PhD, MBA, Independent Consultant & Curtin University, Australia
Title: 3D Printing and its potential applications in Subsea Engineering
Time : 11:30-12:00
Biography:
Ehsan Heshmati has worked in the worldwide offshore and subsea oil and gas industry since 1983. His experience and expertise is in offshore oil and gas infrastructure engineering and project management. After many years of working in the UK, he worked in Europe and Middle East and then arrived in Australia. He has recently, since 2013, joined Curtin University in Western Australia, as an external academic assisting the University in providing an MSc course in Subsea Engineering.
Abstract:
Abstract
3D printing is a disruptive technology that has enormous potentials for on site creation of components to be used as spares or replacement in oil and gas field operations.
In subsea field development and operations, replacement of parts or components may take many weeks to organize, and deliver to offshore site; however, using 3D printing some components can be created on board ships and deployed and used almost immediately, minimizing disruptions to operations.
This paper discusses the 3D printing technologies, technical and cost saving potentials, and issues in relations to subsea operations and maintenance work.
Ajay Kumar Sahu
Associate Professor, Lovely Professional University, Jalandar,(144411), India.
Title: DEVELOPMENT OF ACTIVATED NANO PARTICLE FLY-ASH DRILLING FLUID ADDITIVES†AN ALTERNATIVE FOR BENTONITE.
Time : 12:00-12:30
Biography:
I have post graduated from the renowned university of Indian School of Mines and had done the above study as an academic project. Recently I joined Lovely Professional University as an Assistant Professor in the Petroleum Engineering Department.
Abstract:
Colloidal properties of drilling fluids are exhibited by bentonite clay particles where montmorillonite is the principle constituent. Due to crystal defect in montmorillonite, bentonite possesses swelling property and is used to maintain gel strength and viscosity of drilling fluid. Bentonite is a naturally occurring material and the price of bentonite is increasing day by day, therefore a viable alternative to bentonite needs to be developed that should be mechanically strong, physically small, thermally stable, environmentally benign chemical.
Fly ash has a similar chemical composition as that of bentonite, which makes it appropriate for evaluation as replacement of bentonite. Fly-ash is a pozzolanic material, a mixture of several mineral oxides, and considered as a major environmental pollutant. Major components of fly ash are Silicon dioxide (SiO2), Ferric oxide (Fe2O3), Aluminum oxide (Al2O3) and Calcium oxide (CaO). Mineralogical properties of fly ash are almost identical with bentonite. The major problem with fly-ash is that it is chemically inert.
In this study appropriate functionalization has been carried out on fly ash to generate active sites on fly-ash surface, which may have similar or even better surface properties as compared to the bentonite. Aqueous drilling fluid suspensions were prepared using different solid content of activated fly ash and API bentonite. Rheological studies were performed for both bentonite and activated fly ash mixture with varying solid loading.
Finally, after comparing all the test results it could be concluded that activated fly ash can replace bentonite for preparing colloidal suspensions. It is an economic replacement and also it helps in reduction of solid waste through recycling of fly ash for oil well drilling operations.
In this study, we have proposed the efficient utilization of waste fly-ash as a drilling fluid for oil well drilling through processing and estimating rheological properties.
Valery Khabashesku
Professor, USA
Title: Engineered nanoparticles for oilfield applications: Recent advances
Time : 12:30-1:00
Biography:
Valery Khabashesku has earned his professorial Doctor of Science degree and doctoral C.Sc. degree from the Zelinsky Institute of Organic Chemistry of the Russian Academy of Sciences in Moscow, Russia, and M.Sc. degree in chemistry from Lomonosov Moscow State University. He has been a faculty member in Chemistry Department at Rice University and the Department of Chemical & Biomolecular Engineering at the University of Houston. At present, he is a Senior Technical Advisor for Nanotechnology at Baker Hughes a GE Company, one of the world-leading oil field services companies, and is also appointed as Adjunct Professor in the Department of Materials Science and Nanoengineering at Rice University. He has authored more than 400 publications and has been serving as an editorial board member for the journals of nanotechnology, materials and chemistry..
Abstract:
Statement of the Problem: The oil industry is in critical need for advanced technologies that enable enhanced oil recovery and reliable equipment operations under increasingly harsh reservoir conditions, high pressure, high temperature, high salinity and sour environments. The recent advances made in nanotechnology R&D on basis of engineered nanoparticles, dispersed or in-situ generated in different media, offer viable solutions for such demanding oilfield applications as enhanced bitumen recovery from oil sands, tracers for reservoir monitoring, corrosion and erosion-resistant coatings, reduced wear elastomer seals and instrumentation for well logging and natural formations monitoring. Methodology: Laboratory flotation experiments on bitumen recovery from mined oil sands were done by using dispersed inorganic nanoparticle colloids. Fluorescent carbon quantum dots (CQD), were synthesized using electrochemical redox reactions. For preparation of fluorescent core-shell nanoparticles, colloidal synthesis was applied. A series of samples of HNBR elastomer filled with CNTs and 50 phr of N550 carbon black and a peroxide-based curing system was prepared by melt mixing in a C.W. Brabender internal mixer. Nanodiamond/Ni-B and Ni-P composite coatings were deposited on test coupons by an electroless technique. Scintillating glass ceramic nanocomposites for gamma ray detection were produced by controlled melting of mixed oxide and oxyfluoride media. Findings: Colloidal nanoparticles improved bitumen recovery by 5%. Synthesized 10-20 nm CQD were stable in API brine at 80 °C and recovered at 76 % in coreflow experiments. The abrasion resistance of the elastomer reinforced by CNTs was more than 100% greater than for the commercial one. The addition of diamond to Ni-P composite coatings resulted in three times lower erosion than monolithic Ni-B coatings. Novel nanostructured glasses 2BaF2·3SiO2·2GdF3·SiO2·CeF3 & 2BaCl2·3SiO2·2GdCl3·SiO2·CeCl3, respectively, showed a reasonably fast scintillation kinetics with a decay constant of 70-80 ns. Conclusion & Significance: The reviewed examples can open new opportunities for nanotechnology application in the oil industry.
Yang Li
PhD,Beijing Normal University , China
Title: Does dissolution play an important role in the enhancement of porosity in tight oil sandstone reservoirs ?
Time : 1:00-1:30
Biography:
Yang Li has his expertise in quantitative impact of diagenesis on reservoir quality and sandstone petrology.
Abstract:
Some scholars believe that when acidic fluids exist in the reservoir, there will be increased feldspar, rock fragment, and laumontite dissolution, which improves reservoir quality.The dissolution products such as kaolinite and illte precipitated near the second pores can be an evidence of dissolution. However, the precipitation of dissolution products occupied the space of primary pores. Then, how to determine the impacts of dissolution on reservoir quality quantitatively?
This study, fully considers whether the dissolution and precipitation systems are open or closed based on the reaction equations of feldspar and laumontite under acidic conditions,
and the locations of products of dissolution are analysed.Quantitative analysis shows that Feldspar dissolution in a closed system can only result in a <1% net increase of porosity in the tight oil reservoirs, which produced
little improvement in reservoir quality. It is likely that some of the secondary pores produced by dissolution reactions were occupied by the products of dissolution.The total content of products of dissolution such as kaolinite, illite and quartz overgrowth does not have a linear correlation with porosity but has a negative correlation when permeability is less than 1 mD , indicating that dissolution in a closed system may not result in a significant net increase of porosity in tight oil sandstones reservoirs. Instead, due to the precipitation of the products
Some scholars believe that when acidic fluids exist in the reservoir, there will be increased feldspar, rock fragment, and laumontite dissolution, which improves reservoir quality.The dissolution products such as kaolinite and illte precipitated near the second pores can be an evidence of dissolution. However, the precipitation of dissolution products occupied the space of primary pores. Then, how to determine the impacts of dissolution on reservoir quality quantitatively?
This study, fully considers whether the dissolution and precipitation systems are open or closed based on the reaction equations of feldspar and laumontite under acidic conditions,
and the locations of products of dissolution are analysed.Quantitative analysis shows that Feldspar dissolution in a closed system can only result in a <1% net increase of porosity in the tight oil reservoirs, which produced
little improvement in reservoir quality. It is likely that some of the secondary pores produced by dissolution reactions were occupied by the products of dissolution.The total content of products of dissolution such as kaolinite, illite and quartz overgrowth does not have a linear correlation with porosity but has a negative correlation when permeability is less than 1 mD , indicating that dissolution in a closed system may not result in a significant net increase of porosity in tight oil sandstones reservoirs. Instead, due to the precipitation of the products of dissolution, the primary intergranular pores and pore throats were filled, leading to the significant deterioration of permeability.