Preprints

Filtering by Subject: Engineering

Waterflood-CMG production optimization analysis for the Draugen field of Norway

Bruce Mutume, Tendai Donavan Zisengwe

Published: 2023-07-18
Subjects: Engineering

The Draugen field is well-known for producing oil that is then transported to power plant facilities to generate electricity in Draugen. However, with declining oil production (as of 2021) and new necessary electrification contracts, the field may be unable to meet the demand for plant facilities. The current study combines waterflooding and reservoir simulation methods from the Computer [...]

Assisted upscaling of miscible CO¬2-enhanced oil recovery floods using an artificial-neural-network-based optimisation algorithm

Precious Ogbeiwi, Karl D Stephen

Published: 2023-07-13
Subjects: Engineering, Other Engineering

The fine-scale compositional simulations required to accurately model miscible CO2 flooding are unrealistic and highly computationally expensive, and upscaling procedures are required to approximate the behaviour of these fine-scale grids on more realistic coarse-scale models. These procedures include the pseudoisation of relative permeabilities which ensures the matching of large-scale effects [...]

Techno-economic evaluation of the potential of CO2 storage and Enhanced Oil Recovery in the Niger-Delta Hydrocarbon Basin using reservoir simulation: Case Study

Precious Ogbeiwi, Karl D Stephen

Published: 2023-07-12
Subjects: Engineering, Other Engineering

The constant dependence on fossil fuel combustion for energy and industrial activities results in global warming and climate change due to the increased atmospheric concentration of greenhouse gases such as CO2. CO2 storage in mature petroleum reservoirs is considered one of the most viable ways to reduce CO2 concentrations in the atmosphere. The Niger-Delta hydrocarbon basin holds significant [...]

A high-resolution, 3D groundwater-surface water simulation of the contiguous US: Advances in the integrated ParFlow CONUS 2.0 modeling platform

Chen Yang, Danielle Tijerina-Kreuzer, Hoang Tran, et al.

Published: 2023-07-10
Subjects: Engineering

Large-scale, high-resolution hydrologic modeling is an important tool to address questions of water quantity, availability, and recharge. Continental-to-Global scale models, particularly those that include groundwater, are growing in number. However, many of these approaches simplify aspects of the system and the connections between e.g., surface water and groundwater. The ParFlow CONUS modeling [...]

Satellite-derived shorelines for monitoring of sandy beaches: a benchmark study

Kilian Vos, Kristen D Splinter, Jesús Palomar-Vázquez, et al.

Published: 2023-07-10
Subjects: Civil and Environmental Engineering, Earth Sciences, Engineering, Environmental Engineering, Geomorphology, Oceanography, Oceanography and Atmospheric Sciences and Meteorology, Other Earth Sciences, Physical Sciences and Mathematics

Satellite remote sensing is becoming a widely used monitoring technique in coastal sciences. Yet, no benchmarking studies exist that compare the performance of popular satellite-derived shoreline (SDS) mapping algorithms against standardized sets of inputs and validation data. Here we present a new benchmarking framework to evaluate the accuracy of shoreline change observations extracted from [...]

Optimising the value of a CO2 Water-Alternating-Gas injection project under geological and economic uncertainties using an improved artificial neural network.

Precious Ogbeiwi, Karl D Stephen

Published: 2023-07-08
Subjects: Engineering, Other Engineering

The numerical simulations required for the robust optimisation of the alternating injection of water and CO2 in hydrocarbon reservoirs are computationally expensive due to engineering, geological, and economic uncertainties. Using approximation models of the desired objective function(s) can significantly decrease the cost associated with the optimisation routines while providing an adequate [...]

Differential effects of climate change on average and peak demand for heating and cooling across the contiguous United States

Yash Vijay Amonkar, James Doss-Gollin, David J Farnham, et al.

Published: 2023-07-07
Subjects: Engineering

While most electricity systems are designed to handle peak demand during summer months, pathways to deep decarbonization generally electrify building heating, thus increasing electricity demand during winter. A key question is how climate variability and change will affect peak heating and cooling demand in an electrified future. We conduct a spatially explicit analysis of trends in [...]

Forecasting Weather using Deep Learning from the Meteorological Stations Data : A Study of Different Meteorological Stations in Kaski District, Nepal

Supath Dhital, Kapil Lamsal, Sulav Shrestha, et al.

Published: 2023-07-02
Subjects: Engineering

Contemporarily, one of the most pressing concerns is reliable and rapid weather forecasting. In Nepal, the Department of Hydrology and Meteorological uses a numerical modeling approach to forecast the weather, which is tardy and requires high end equipment to process the information so deep learning approach will be best alternative. This project aims to forecast the next 2-hour Precipitation and [...]

Geochemical Insights: Unraveling the Influence on Kerogen and Organic-rich Mudrocks

Mohammad Alaquib

Published: 2023-07-01
Subjects: Engineering

The examination of geochemical factors and their impact on kerogen and organic-rich mudrocks holds significant implications for reservoir characterization, hydrocarbon exploration, and production strategies. The understanding of the geochemical environment empowers reservoir engineers and geoscientists to gain valuable insights into the distribution, quality, and producibility of hydrocarbons [...]

Engaging the Earth Science and Engineering Communities in Developing a River Morphology Information System (RIMORPHIS)

Amanda L Cox, Marian Muste, Venkatesh Merwade, et al.

Published: 2023-06-29
Subjects: Engineering, Physical Sciences and Mathematics

ABSTRACT: River morphology data are critical for understanding and studying river processes and for managing rivers for multiple socio-economic uses. While such data have been acquired extensively over time, several issues hinder their use for river morphology studies such as data accessibility, variety of data formats, lack of data models for data storage, and lack of processing tools to [...]

Exploring the Complexity of Kerogen: A Comprehensive Review

Ziang Jung

Published: 2023-06-26
Subjects: Engineering

Kerogen, a naturally occurring organic material, is vital in petroleum geology and the formation of hydrocarbon reserves. This review provides an overview of its composition, classification, structural characteristics, thermal behavior, and applications. It explores advancements in analytical techniques and computational modeling, shedding light on kerogen's nature. Additionally, the review [...]

Technological Maturity of Aircraft-Based Methane Sensing for Greenhouse Gas Mitigation

Sahar Head El Abbadi, Zhenlin Chen, Philippine M. Burdeau, et al.

Published: 2023-06-22
Subjects: Engineering, Environmental Monitoring, Oil, Gas, and Energy

Methane is a major contributor to anthropogenic greenhouse gas emissions. Identifying large sources of methane, particularly from the oil and gas sector, will be essential for mitigating climate change. Aircraft-based methane sensing platforms can rapidly detect and quantify methane point-source emissions across large geographic regions, playing an increasingly important role in industrial [...]

Global Inventory of Dissolved CO2 Sequestration Potential in Geothermal Systems

David Dempsey, Karan Titus, Rebecca Peer

Published: 2023-06-20
Subjects: Engineering, Other Engineering

Geothermal electricity generation has low carbon emissions compared to hydrocarbon alternatives. Nevertheless, recent attention on emissions of magmatic CO2 and other non-condensable gases (NCG) has prompted interest in their capture and reinjection. The geothermal industry is uniquely placed to effect CO2 sequestration due to existing reinjection infrastructure (e.g., wells, pipes, pumps) and [...]

HydroCompute: An Open-Source Web-Based Computational Library for Hydrology and Environmental Sciences

Carlos Erazo Ramirez, Muhammed Yusuf Sermet, Ibrahim Demir

Published: 2023-06-19
Subjects: Engineering

We present HydroCompute, a high-performance client-side computational library specifically designed for web-based hydrological and environmental science applications. Leveraging state-of-the-art technologies in web-based scientific computing, the library facilitates both sequential and parallel simulations, optimizing computational efficiency. Employing multithreading via web workers, [...]

A framework for the estimation of uncertainties and spectral error correlation in Sentinel-2 Level-2A data products

Javier Gorroño, Luis Guanter, Lukas Valentin Graf, et al.

Published: 2023-06-16
Subjects: Engineering, Environmental Monitoring

The Copernicus Sentinel-2 (S2) satellite mission acquires high spatial resolution optical imagery over land and coastal areas. Delivering uncertainty estimates and spectral error correlation alongside S2 data products facilitates the constrain of retrieval algorithms, propagates further downstream the retrieval uncertainty, and fifinally makes informed decisions to end-users. This study [...]

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