Three-dimensional seismic geomorphology of a deep-water slope-channel system: The Sequoia field, offshore west Nile Delta, Egypt

Abstract The packer is one of the most important tools in deep-water perforation combined well testing, and its safety directly determines the success of perforation test operations. The study of dynamic perforating pressure on the packer is one of the key technical problems in the production of deep-water wells. However, there are few studies on the safety of packers with shock loads. In this article, the three-dimensional finite element models of downhole perforation have been established, and a series of numerical simulations are carried out by using orthogonal design. The relationship between the perforating peak pressure on the packer with the factors such as perforating charge quantity, wellbore pressure, perforating explosion volume, formation pressure, and elastic modulus is established. Meanwhile, the database is established based on the results of numerical simulation, and the calculation model of peak pressure on the packer during perforating is obtained by considering the reflection and transmission of shock waves on the packer. The results of this study have been applied in the field case of deep-water well, and the safety optimization program for deep-water downhole perforation safety has been put forward. This study provides important theoretical guidance for the safety of the packer during deep-water perforating.

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Use of GALDIT model and HFE-Diagram to assess seawater intrusion vulnerability in West Nile Delta, Egypt

Arabian Journal of Geosciences ◽

10.1007/s12517-021-07678-z ◽

2021 ◽

Vol 14 (14) ◽

Author(s):

Zenhom E. Salem ◽

Samia S. Hasan

Keyword(s):

Seawater Intrusion ◽

Nile Delta ◽

West Nile

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Development and Validation of Quasi-Eulerian Mean Three-Dimensional Equations of Motion Using the Generalized Lagrangian Mean Method

Journal of Marine Science and Engineering ◽

10.3390/jmse9010076 ◽

2021 ◽

Vol 9 (1) ◽

pp. 76

Author(s):

Duoc Nguyen ◽

Niels Jacobsen ◽

Dano Roelvink

Keyword(s):

Surface Waves ◽

Deep Water ◽

Surf Zone ◽

Equations Of Motion ◽

Three Dimensional ◽

Breaking Waves ◽

Successful Implementation ◽

Random Waves ◽

Mean Motion ◽

Generalized Lagrangian

This study aims at developing a new set of equations of mean motion in the presence of surface waves, which is practically applicable from deep water to the coastal zone, estuaries, and outflow areas. The generalized Lagrangian mean (GLM) method is employed to derive a set of quasi-Eulerian mean three-dimensional equations of motion, where effects of the waves are included through source terms. The obtained equations are expressed to the second-order of wave amplitude. Whereas the classical Eulerian-mean equations of motion are only applicable below the wave trough, the new equations are valid until the mean water surface even in the presence of finite-amplitude surface waves. A two-dimensional numerical model (2DV model) is developed to validate the new set of equations of motion. The 2DV model passes the test of steady monochromatic waves propagating over a slope without dissipation (adiabatic condition). This is a primary test for equations of mean motion with a known analytical solution. In addition to this, experimental data for the interaction between random waves and a mean current in both non-breaking and breaking waves are employed to validate the 2DV model. As shown by this successful implementation and validation, the implementation of these equations in any 3D model code is straightforward and may be expected to provide consistent results from deep water to the surf zone, under both weak and strong ambient currents.

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Erratum to: Numerical Simulation of Groundwater Flow and Vulnerability in Wadi El-Natrun Depression and Vicinities, West Nile Delta, Egypt

Journal of the Geological Society of India ◽

10.1007/s12594-019-1131-y ◽

2019 ◽

Vol 93 (1) ◽

pp. 124-124

Author(s):

M. El Osta ◽

H. Hussein ◽

K. Tomas

Keyword(s):

Numerical Simulation ◽

Groundwater Flow ◽

Nile Delta ◽

West Nile ◽

Wadi El Natrun

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Mud prone entrenched deep-water slope channel complexes from the Eocene of eastern Turkey

Geological Society London Special Publications ◽

10.1144/gsl.sp.2005.244.01.10 ◽

2005 ◽

Vol 244 (1) ◽

pp. 155-180 ◽

Cited By ~ 5

Author(s):

Bryan T. Cronin ◽

Hasan Çelik ◽

Andrew Hurst ◽

Ibrahim Turkmen

Keyword(s):

Deep Water ◽

Eastern Turkey ◽

Slope Channel

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A review of seawater intrusion in the Nile Delta groundwater system – the basis for assessing impacts due to climate changes and water resources development

Hydrology and Earth System Sciences Discussions ◽

10.5194/hessd-10-10873-2013 ◽

2013 ◽

Vol 10 (8) ◽

pp. 10873-10911 ◽

Cited By ~ 38

Author(s):

M. B. Mabrouk ◽

A. Jonoski ◽

D. Solomatine ◽

S. Uhlenbrook

Keyword(s):

Climate Change ◽

Nile Delta ◽

Groundwater Resources ◽

Scientific Evidence ◽

Three Dimensional ◽

Water Levels ◽

Population Increase ◽

Regional Process ◽

Environmentally Sound ◽

Resources Development

Abstract. Serious environmental problems are emerging in the River Nile basin and its groundwater resources. Recent years have brought scientific evidence of climate change and development-induced environmental impacts globally as well as over Egypt. Some impacts are subtle, like decline of the Nile River water levels, others are dramatic like the salinization of all coastal land in the Nile Delta – the agricultural engine of Egypt. These consequences have become a striking reality causing a set of interconnected groundwater management problems. Massive population increase that overwhelmed the Nile Delta region has amplified the problem. Many researchers have studied these problems from different perspectives using different methodologies, following different objectives and, consequently, arrived at different findings. However, they all confirmed that significant groundwater salinization has affected the Nile Delta and this is likely to become worse rapidly in the future. This article presents, categorizes and critically analyses and synthesizes the most relevant research regarding climate change and development challenges in relation to groundwater resources in the Nile Delta. It is shown that there is a gap in studies that focus on sustainable groundwater resources development and environmentally sound protection as an integrated regional process in Nile Delta. Moreover, there is also a knowledge gap related to the deterioration of groundwater quality. The article recommends further research that covers the groundwater resources and salinization in the whole Nile Delta based on integrated three-dimensional groundwater modelling of the Nile delta aquifer.

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