The SPE has split the former "Management & Information" technical discipline into two new technical discplines:
- Data Science & Engineering Analytics
The SPE has split the former "Management & Information" technical discipline into two new technical discplines:
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Paredes Zaldivar, Mayté (BIOSOLVIT Biotechnology Solutions S/A) | Pinheiro de Queiroz, Guilhermo (BIOSOLVIT Biotechnology Solutions S/A) | Martins, Wagner (BIOSOLVIT Biotechnology Solutions S/A) | Mulinari, Daniella Regina (State University of Rio de Janeiro) | Silva Freire, Paulo Cesar (Institute of Waterway Research) | de Souza Barbosa, William (Institute of Waterway Research) | Vilela de Faria, Giancarlo (BIOSOLVIT Biotechnology Solutions S/A)
Abstract This work aims to reveal the highly efficient performance of eco-friendly polyurethane (PU) composites with natural palm fibers in the removal and recovery of oil spills. In addition, it is shown that this composite allows oil recovery and reuse, and still the composite material reusability. The study was done from the composite material and mini sorption barriers, up to real scale barriers. The eco-friendly polyurethane-natural palm fibers residue composite foams were obtained by the partial replacement of petrochemical monomers with polyols derived from vegetable oils, and the addition of natural palm fiber residues. The initial tests were carried out in the laboratory using the composite material and mini sorption barriers with 0.3 m. The oil sorption capacity and the sorption efficiency in oil and water were studied using crude and used oils. Also, the oil recovery and the material reusability were tested. Additionally, the oil spill sorption and containment performance of real scale barriers, 3 m long, were tested at a swimming pool and at wave bay and river flow scenarios, respectively. The study showed that composite material exhibited higher efficient oil sorption capacity and recovery efficiency in water, reaching values of 20-26 g.g and 85-99 %, respectively. This material still allows the sorption of the dissolved oil, been possible to observe the oily water clarification by the demulsification. Besides, it was possible to recover about 60 % of the oil and material reuse or recycling of at least 7 cycles. Also, efficient results were obtained for the mini sorption barriers. In the case of the bigger barriers, the tests also reveal high oil absorption capacity and that barriers are effective in the adsorption of oil spills. It was observed that the barriers absorbed almost 100% of the oil and maintained its buoyancy. The buoyancy remains greater than 46% after oil sorption. Then, we can conclude that the developed and patented eco-friendly polyurethane - natural palm fibers residue composite foams are excellent materials to be applied in sorption barriers, and these barriers are highly efficient in the removal and recovery of oil spills, also allowing the recovery of oil and the barrier reusability. The novelty is the introduction of efficient eco-friendly composite materials used in sorption barriers. This composite material was tested at the Centre of Documentation, Research, and Experimentation on Accidental Water Pollution (CEDRE), in France, certifying their efficiency and that the material can be recommended for use as a floating sorbent for oil pollution.
Drilling oil and gas wells is a complex process involving many disciplines and stakeholders. This process occurs in an environment where information is often unknown, incomplete, erroneous or at least uncertain. Even so, there is little scientific auditing of drilling data quality and uncertainty during well construction. There are no placeholders in well construction databases to document uncertainty and its propagation. The SPE has formed a cross-disciplinary technical sub-committee to investigate how to describe and propagate drilling data quality and uncertainty.
Ntziachristos, Leonidas (Aristotle University of Thessaloniki) | Mamarikas, Sokratis (Aristotle University of Thessaloniki) | Verbeek, Ruud (TNO) | Grigoriadis, Achilleas (Aristotle University of Thessaloniki)
This paper presents the measurement techniques deployed by the European funded SCIPPER project in order to identify their potential in assisting regulatory authorities to enforce the new emission limits for shipping. On-board sensors, sniffer remote and remote optical devices were extensively used in field campaigns to measure over 1000 ship plumes in major European seas, such as the ports of Hamburg and Marseille, a route in the Baltic Sea and the English Channel. Demonstration results revealed the operational characteristics of the techniques, further to their pollutant detection sensitivity. A preliminary evaluation is conducted in this study considering several criteria of technology maturity, operational capacity, ease of implementation and costs.
_ To measure loads induced by nonimpacting waves on a vertical piercing cylinder, tests were performed in a 17 m long wave tank at the École Centrale Marseille. Different configurations of the cylinder (shape and size of the section and length) were studied for two focusing waves. Wave loads as calculated by the Morison equation were compared with measurements. The context for this experiment is the assessment of the hydrodynamic loads as a result of sloshing on the pump tower in liquefied natural gas tanks on floating structures. The comparisons turn out to be good in all cases studied, provided the Morison equation is used with relevant time series of liquid velocities and accelerations. Introduction Liquefied natural gas (LNG) membrane tanks are largely used on different kinds of floating structures such as LNG carriers, floating liquefied natural gas vessels, floating storage regasification units, LNG-fueled ships (LFSs), LNG bunker vessels, and all small-scale related applications. In these tanks, the liquefied gas remains in conditions close to thermodynamic equilibrium (-162°C at atmospheric pressure). Depending on the application, the volume of LNG tanks for floating structures ranges from a few thousand cubic meters for LFS or small-scale applications to about 55,000 m for tanks of the largest LNG carriers. Whatever the application, the shapes of these tanks are always prismatic, with large upper chamfers and smaller lower chamfers. The tanks do not include any structure that could mitigate LNG sloshing except a pump tower. As can be seen in Fig. 1, the pump tower is a tubular, vertical, stainless steel structure that enables the loading and unloading of the LNG, thanks to pumps located at its base. It is mainly made of three large vertical pipes: the emergency pipe at the front and two discharge pipes at the rear, connected together by struts. Located at the rear of the tank, in the central part but not necessarily exactly in the middle, it hangs from the liquid dome and is horizontally guided at its base by the pump tower base support.
Foiling yachts and crafts are both very sensitive to the flying height in terms of stability and performance, raising the scientific issue of the influence of the free-surface when the foil is at low submergence. This work presents numerical simulations of a 2D hydrofoil section NACA0012 at 5° angle of attack in the vicinity of the free-surface, for different values of the submergence depth, for a chord-based Froude number of 0.571 and a Reynolds number of 159,000. Unsteady-Reynolds Averaged Navier-Stokes (URANS) equations are solved with a mixture model to capture the free surface (Volume Of Fluid method), and using an automatic grid refinement. Verification of the numerical model and validation with data from the literature are presented. Deformation of the free surface and alteration of the hydrodynamic forces compared to the deep immersion case are observed for a submergence depth-to-chord ratio ℎ/□ lower than 2. The foil drag increases up to more than three times the infinite-depth value at ℎ/□≈0.5. The lift force slightly increases until ℎ/□ around 1, and then decreases sharply. For ℎ/□<0.5, the pressure field around the foil is totally modified and the lift is swapped to downward. The study highlights the importance of considering the effect of finite submergence to compute foils’ hydrodynamic forces, for example to be used in Velocity Prediction Programs (VPP) of foiling crafts.
The oil and gas industry is facing unprecedented responsibility and expectations to keep fueling the world's economies and social developments with reliable, accessible, safe, and affordable energy sources while responding to the global urgency to safeguard natural resources and protect the environment. Most major oil and gas companies have announced decarbonization strategies for low-carbon or net-zero emissions associated with their business operations. Consequently, reducing the carbon intensity of oil production [kilograms of carbon dioxide (CO2) equivalent emitted per produced barrel of oil] will be pivotal to meeting the environmental mandate. On the other hand, approximately 70% of the world's counties have set targets to reach net zero within the next 3–5 decades, including emissions from burned hydrocarbon, which is a major challenge. Within this exigent mission to transition the industry, a major question arises about the merit and the role of enhanced oil recovery (EOR).
Faults at many scales impact fluid flow in producing hydrocarbon fields, and focus deformation due to fluid pressure changes, potentially causing overburden leakage and induced seismicity in the reservoir, overburden, or underlying basement. This seminar firstly reviews how the petrophysical and mechanical properties of fault zones control their response to reservoir pressure changes during production (depletion, injection), and consequently their geomechanical behaviour in terms of fault stability. Advances in our understanding of fault zone structure and properties in the last decade are then discussed and shown to have led to more consistent fault zone property estimates. Applications to different case studies of field development are then presented, specifically for analysing the stability of overpressured trap-bounding faults during depletion, leakage and fault stability in the overburden during reservoir injection, and conduit behaviour conducting injected fluids from reservoir to basement and consequent induced seismicity. Finally, future ways forward for predicting fault-related leakage are considered, in terms of the present tectonic context and past geological history of the faulted reservoir and overburden.
Luthy, Vivien (CMA CGM, Marseille, France / ENSAM, Paris, France) | Grinnaert, François (ENSM, Le Havre, France / IRENav, Brest, France) | Billard, Jean-Yves (Ecole Navale, Lanvéoc, France / IRENav, Brest, France) | Rapp, Jocelyn (CMA CGM, Marseille, France)
_ The International Maritime Organization (IMO) provides criteria to assess the vulnerability of ships toward the phenomenon of parametric roll. Such long-term vulnerability assessments permit to qualify statistically the ships vulnerability regarding parametric roll. However, it does not permit to assess the risk of parametric roll in real time. Thus, researchers and private company have developed methods and software to evaluate this risk using the real-time ship motions provided by the onboard inertial unit. Those methods detect parametric roll events when it appears and warn the officer of the watch of the immediate danger. This paper presents an innovative real-time detection method and its validation. The detection method considers physical conditions required for parametric roll to appear. Especially, it considers the coupling between the roll and pitch motions. The method and its associated parametric roll alarm are entirely described. The results show that the method correctly identifies parametric roll in regular longitudinal waves and do not lead to false detection in regular beam waves. A statistical study in irregular waves based on simulated data presents very promising results with a parametric roll detection rate in head seas above 80% when heavy roll motions appear and a false detection rate in beam seas below 4%. Finally, a 2.5-day full-scale validation on a container ship provides promising results. Introduction The container ships, with typical hull shape presenting flat stern and pronounced bow flare, are especially subject to parametric roll. Operationally, several accidents which have led to the loss of containers at sea may be imputed to this phenomenon (France et al. 2003; Carmel 2006; MAIB 2020; DMAIB 2022). Following the accidents of the C11-class container ship (France et al. 2003) and of the Maersk Carolina (Carmel 2006), both due to parametric roll, insurers asked the shipowners to take measures to avoid such failure to appear (Dølhie 2006). Two solutions are rapidly developed to answer this request. The first one is developed by SeaSense and named SeaSense Monitoring (Nielsen et al. 2006).
Hussein Hoteit, SPE, is a professor of earth science and engineering and chair of the Energy Resources and Petroleum Engineering program at King Abdullah University of Science and Technology (KAUST) in Saudi Arabia. Before joining KAUST in 2016, he worked for approximately 15 years for the oil and gas industry, including at Chevron and ConocoPhillips, where he conducted projects related to chemical enhanced oil recovery (EOR), CO2-EOR, steamflooding, and other aspects of EOR. Hoteit’s current research includes chemical EOR, waterflooding optimization, geological CO2 sequestration, CO2 mineralization in basalt, data-driven modeling, and reservoir simulation development. He has published more than 100 technical papers and has earned several SPE awards. Hoteit was an SPE Distinguished Lecturer in 2009 and earned the A Peer Apart award in 2017. He served as an associate editor for SPE Journal for more than 10 years. Hoteit holds a BS degree in mathematics from the University of Lebanon and MS and PhD degrees in computer science and applied mathematics from the University of Rennes, France.
Design for preventing or minimizing the effects of accidents is termed accidental limit states (ALS) design and is characterized by preventing/minimizing loss of life, environmental damage, and loss of the structure. Collision, grounding, dropped objects, explosion, and fire are traditional accident categories.