3-D shallow-water seismic survey evaluation and design using the focal-beam method: a case study offshore Abu Dhabi

Recently, electric vehicles (EV) have gained much attention as a potential enabling technology to support CO2 emissions reduction targets. Relative to their internal combustion vehicle counterparts, EVs consume less energy per unit distance, and add the benefit of not emitting any carbon dioxide in operation and instead shift their emissions to the existing local fleet of power generation. However, the true success of EVs depends on their successful integration with the supporting infrastructure systems. Building upon the recently published methodology for the same purpose, this paper presents a “systems-of-systems” case study assessing the impacts of EVs on these three systems in the context of Abu Dhabi. For the physical transportation system, a microscopic discrete-time traffic operations simulator is used to predict the kinematic state of the EV fleet over the duration of one day. For the impact on the intelligent transportation system (ITS), the integration of EVs into Abu Dhabi is studied using a multi-domain matrix (MDM) of the Abu Dhabi Department of Transportation ITS. Finally, for the impact on the electric power system, the EV traffic flow patterns from the CMS are used to calculate the timing and magnitude of charging loads. The paper concludes with the need for an intelligent transportation-energy system (ITES) which would coordinate traffic and energy management functionality.

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A case study of debris flow risk assessment and hazard range prediction based on a neural network algorithm and finite volume shallow water flow model

Environmental Earth Sciences ◽

10.1007/s12665-021-09580-z ◽

2021 ◽

Vol 80 (7) ◽

Author(s):

Yuchao Li ◽

Jianping Chen ◽

Zhihai Li ◽

Xudong Han ◽

Shijie Zhai ◽

...

Keyword(s):

Neural Network ◽

Risk Assessment ◽

Debris Flow ◽

Shallow Water ◽

Water Flow ◽

Finite Volume ◽

Flow Model ◽

Shallow Water Flow ◽

Neural Network Algorithm

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Holocene Shallow-Water Carbonate and Evaporite Sediments of Khor al Bazam, Abu Dhabi, Southwest Persian Gulf

AAPG Bulletin ◽

10.1306/5d25c803-16c1-11d7-8645000102c1865d ◽

1969 ◽

Vol 53 ◽

Cited By ~ 3

Author(s):

Christopher G. St. C. Kendall (2),

Keyword(s):

Shallow Water ◽

Persian Gulf ◽

Abu Dhabi ◽

Water Carbonate ◽

Shallow Water Carbonate

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Seismic solutions utilizing existing in-mine infrastructure for mineral exploration: A case study from Maseve platinum mine, South Africa

The Leading Edge ◽

10.1190/tle41010054.1 ◽

2022 ◽

Vol 41 (1) ◽

pp. 54-61

Author(s):

Moyagabo K. Rapetsoa ◽

Musa S. D. Manzi ◽

Mpofana Sihoyiya ◽

Michael Westgate ◽

Phumlani Kubeka ◽

...

Keyword(s):

South Africa ◽

Seismic Data ◽

Mineral Exploration ◽

Ground Surface ◽

Seismic Survey ◽

Noisy Environment ◽

Borehole Data ◽

Passive Seismic ◽

Below Ground

We demonstrate the application of seismic methods using in-mine infrastructure such as exploration tunnels to image platinum deposits and geologic structures using different acquisition configurations. In 2020, seismic experiments were conducted underground at the Maseve platinum mine in the Bushveld Complex of South Africa. These seismic experiments were part of the Advanced Orebody Knowledge project titled “Developing technologies that will be used to obtain information ahead of the mine face.” In these experiments, we recorded active and passive seismic data using surface nodal arrays and an in-mine seismic land streamer. We focus on analyzing only the in-mine active seismic portion of the survey. The tunnel seismic survey consisted of seven 2D profiles in exploration tunnels, located approximately 550 m below ground surface and a few meters above known platinum deposits. A careful data-processing approach was adopted to enhance high-quality reflections and suppress infrastructure-generated noise. Despite challenges presented by the in-mine noisy environment, we successfully imaged the platinum deposits with the aid of borehole data and geologic models. The results open opportunities to adapt surface-based geophysical instruments to address challenging in-mine environments for mineral exploration.

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Time-Lapse Seismic for Reservoir Management: Case Studies From Offshore Niger Delta, Nigeria

SPE Reservoir Evaluation & Engineering ◽

10.2118/170808-pa ◽

2016 ◽

Vol 19 (03) ◽

pp. 391-402

Author(s):

Sunday Amoyedo ◽

Emmanuel Ekut ◽

Rasaki Salami ◽

Liliana Goncalves-Ferreira ◽

Pascal Desegaulx

Keyword(s):

Case Studies ◽

Niger Delta ◽

Reservoir Management ◽

Time Lapse ◽

Seismic Survey ◽

Elastic Model ◽

Field Development ◽

4D Seismic ◽

The Impact

Summary This paper presents case studies focused on the interpretation and integration of seismic reservoir monitoring from several fields in conventional offshore and deepwater Niger Delta. The fields are characterized by different geological settings and development-maturity stages. We show different applications varying from qualitative to quantitative use of time-lapse (4D) seismic information. In the first case study, which is in shallow water, the field has specific reservoir-development challenges, simple geology, and is in phased development. On this field, 4D seismic, which was acquired several years ago, is characterized by poor seismic repeatability. Nevertheless, we show that because of improvements from seismic reprocessing, 4D seismic makes qualitative contributions to the ongoing field development. In the second case study, the field is characterized by complex geological settings. The 4D seismic is affected by overburden with strong lateral variations in velocity and steeply dipping structure (up to 40°). Prestack-depth-imaging (PSDM) 4D seismic is used in a more-qualitative manner to monitor gas injection, validate the geologic/reservoir models, optimize infill injector placement, and consequently, enhance field-development economics. The third case study presents a deep offshore field characterized by a complex depositional system for some reservoirs. In this example, good 4D-seismic repeatability (sum of source- and receiver-placement differences between surveys, dS+dR) is achieved, leading to an increased quantitative use of 4D monitoring for the assessment of sand/sand communication, mapping of oil/water (OWC) front, pressure evolution, and dynamic calibration of petro-elastic model (PEM), and also as a seismic-based production-logging tool. In addition, 4D seismic is used to update seismic interpretation, provide a better understanding of internal architecture of the reservoirs units, and, thereby, yield a more-robust reservoir model. The 4D seismic in this field is a key tool for field-development optimization and reservoir management. The last case study illustrates the need for seismic-feasibility studies to detect 4D responses related to production. In addition to assessing the impact of the field environment on the 4D- seismic signal, these studies also help in choosing the optimum seismic-survey type, design, and acquisition parameters. These studies would possibly lead to the adoption of new technologies such as broad-band streamer or nodes acquisition in the near future.

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Understanding the Influence of Structural Evolution Folding and Tilting on Hydrocarbon Accumulation Drainage and Imbibition and Reservoir Quality Diagenesis for Enhanced Field Development Planning, a Case Study of Lower Cretaceous Carbonate Reservoir, Abu Dhabi, UAE

10.2118/193237-ms ◽

2018 ◽

Author(s):

Riaz Khan ◽

Mina Sameh Salib ◽

Ali Ba Hussain ◽

Atiqurrahman Bin Abd Rashid ◽

Gokhan Aydinoglu ◽

...

Keyword(s):

Lower Cretaceous ◽

Structural Evolution ◽

Development Planning ◽

Carbonate Reservoir ◽

Abu Dhabi ◽

Reservoir Quality ◽

Hydrocarbon Accumulation ◽

Field Development

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Relevance of an integrative approach for taxonomic revision in sponge taxa: case study of the shallow-water Atlanto-Mediterranean Hexadella species (Porifera:Ianthellidae:Verongida)

Invertebrate Systematics ◽

10.1071/is11044 ◽

2012 ◽

Vol 26 (3) ◽

pp. 230 ◽

Cited By ~ 13

Author(s):

Julie Reveillaud ◽

Céline Allewaert ◽

Thierry Pérez ◽

Jean Vacelet ◽

Bernard Banaigs ◽

...

Keyword(s):

Shallow Water ◽

Phylogenetic Reconstruction ◽

Taxonomic Revision ◽

Integrative Approach ◽

Cryptic Species Complex ◽

Surface Network ◽

Natural Toxicity ◽

Shallow Water Species ◽

Water Species

The identification of sponges that lack a mineral skeleton is always highly challenging, especially for Hexadella species, which are also fibreless. Recently, the yellow species Hexadella pruvoti Topsent was identified as a cryptic species complex while the pink coloured Hexadella racovitzai Topsent showed two highly divergent lineages. We performed a COI phylogenetic reconstruction using 27 new Mediterranean Hexadella samples in order to confirm the presence of divergent lineages within both shallow-water species. Specimens were described with an integrative approach combining morphological and cytological investigations, biochemical profiling and assessment of natural toxicity in order to identify diagnostic characters for each taxon. H. topsenti, sp. nov. is distinguished from H. racovitzai by its colour, its surface network shape, divergent secondary metabolite patterns and toxicity values. H. crypta, sp. nov. differs from H. pruvoti by a different encrusting growth form when alive, and by distinctively colouring the ethanol fixative solution. In addition, H. pruvoti and H. crypta show different types of cells with inclusions as well as distinct metabolic fingerprints. Natural toxicity values, however, do not permit the separation of H. pruvoti and H. crypta. Our work shows that only the use of a combination of complementary tools can provide relevant descriptions for some problematic taxa.

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