geological modeling Articles | Environmental XPRT

The hidden benefits of maturity modelling

Most 1–D modelling studies are carried out with the explicit objective of calculating maturity and hydrocarbon generation. This focus on bottom–line output has caused most modellers to overlook a major additional value of such studies: the knowledge acquired while building internally consistent geologic models. During model construction one should carefully consider the following factors: events ...

Dec. 4, 2012

By Inderscience Publishers

Method and technique of 3–D dynamic structural evolution modelling of fault basin

The important and difficult point in the 3–D basin structural evolution modelling is how to make the modelling conform to the real geological process. In this paper, the rectification of formation boundary deformation is implemented by 3–D flexural slip mechanism and shearing mechanism. In compaction correction, by taking account of the phase boundary and diagenetic effect on porosity, a formwork ...

Dec. 4, 2012

By Inderscience Publishers

Local recoverable reserves prediction with block LU simulation

Prediction of local recoverable reserves is an important problem in ore reserve evaluation. Wide spacing of exploration data leads to unavoidable uncertainty at unsampled locations. Deterministic methods such as kriging cannot explicitly account for this lack of perfect information and equipment selectivity. We present a methodology and software for assessing recoverable reserves at Selective ...

Sep. 29, 2008

By Inderscience Publishers

Using Grid Tools in the RockWorks Utilities to Modify a Borehole Manager Stratigraphy Model

Summary Creating a geological model with RockWorks can be tricky with certain datasets. When a Stratigraphy Model is created in the Borehole Manager, the program creates a top and base grid for each unit listed in the Stratigraphy Table. After model generation, you can view these grids, stored in the Project Directory, in the RockWorks Project Manager. The following steps demonstrate how you can ...

Mar. 23, 2018

By RockWare, Inc.

3D simulation of hydrocarbon–expulsion history: a method and its application

During the hydrocarbon expulsion simulation process, it is needed to consider the different mechanisms, modes and kinds of expulsion efficiency at different stages, as well as the changes of oil and gas phases, and the solubility of gas in oil and water. Aiming at the above issues, the combination of modelling methods with stages of normal–pressure hydrocarbon–expulsion and over–pressure episodic ...

Dec. 4, 2012

By Inderscience Publishers

Tectonic processes development with time in the areas of HLW disposal from expert assessment to prognosis

A methodical approach is given which is applied to prediction of the persistence of the natural isolation properties of the geological environment for a time period of 104–105 years, when disposing of radioactive waste in geological formations. It is based on modelling geodynamic and tectonic processes development with time and assessing their effects on the persistence of structural tectonic ...

Aug. 11, 2006

By Inderscience Publishers

Geophysical modelling of the Catalan magnetic anomaly: study of the crustal structure of the Gulf of Lion margin - Case Study

As part of a research project (the OROGEN project, carried out jointly with TOTAL and INSU-CNRS), BRGM has drawn on datasets from the French Gravimetric Database and the French Airborne Geophysical Database to study and model the geological structure that causes the Catalan magnetic anomaly. The need One of the main aims of the OROGEN research project is to improve knowledge of the processes ...

Dec. 13, 2019

By BRGM

Results of AMT survey at Patomsky crater case study

The Patomsky crater is located in east part of the Irkutsk region (Russia). This geological object has anomaly appearance and is discordant placed relative to hosting geological structure. The crater has been discovered in 1949 during routine geological survey of the territory by geologist V.V. Kolpakov. The drastic investigations of Patomsky crater by modern technology have begun since 2006. The ...

Sep. 20, 2013

By Advanced Geophysical Operations and Services Inc. (AGCOS)

A model for wave control on coral breakage and species distribution in the Hawaiian Islands

The fringing reef off southern Molokai, Hawaii, is currently being studied as part of a multi-disciplinary project led by the US Geological Survey. As part of this study, modeling and field observations were utilized to help understand the physical controls on reef morphology and the distribution of different coral species. A model was developed that calculates wave-induced hydrodynamic forces on ...

Mar. 1, 2005

By Springer-Verlag GmbH

Airborne Geophysical Solutions for Geotechnical Challenges

SUMMARY Assessing geological risk is a significant part of infrastructure planning and managing project cost overruns and delays are persistent challenges for engineers and project managers. Risks can be difficult to control given the high cost of detailed ground investigation programs using traditional approaches (i.e. geotechnical drillings). Airborne electromagnetic surveys (AEM) are ...

Jan. 21, 2020

By SkyTEM ApS

Modeling Leachate Contamination and Remediation of Groundwater at a Landfill Site

Leachate contamination of an aquifer from a landfill sitewas simulated using the groundwater flow and transport model SUTRA developed by the U.S. Geological Survey. The model calibration was performed by spatially adjusting the hydraulic conductivity in order to capture the measured hydraulic head spatial variation and then by adjusting the dispersivity and porosity match the measured chloride ...

Mar. 21, 2005

By Springer-Verlag GmbH

Volumetric Analysis & Three-Dimensional Visualization of Industrial Mineral Deposits

Abstract Base and precious metal deposits are typically characterized by a single parameter such as the total weight of mineable gold. Industrial mineral deposits, on the other hand, are characterized by their end-use. For example, the volumetric evaluation of a limestone deposit depends upon who’s buying the product. The concrete industry has a suite of evaluation parameters such as silica ...

Mar. 23, 2018

By RockWare, Inc.

Middle Holocene palaeoflood extremes of the Lower Rhine

A Chézy-based hydraulic model was run to estimate the magnitude of extreme floods of Middle Holocene age in the Lower Rhine Valley (Germany). Input parameters were gathered from the field and literature, and used in ten scenarios to calculate a best guess estimate for the minimum size of extreme floods. These events have been registered as slackwater deposits on elevated terrace levels ...

Mar. 20, 2013

By IWA Publishing

Managing site data and the maintenance of conceptual model and time series outputs at a complex site over an extended period - Case Study

Background Leakages of TCE and the subsequent groundwater contamination at an industrial facility in Adelaide have led to an ongoing investigation and remediation program conducted since 1999. This work comprised site characterisation and remediation, including borehole drilling, monitoring well installation, soil, groundwater and vapour sampling, laboratory analysis and preliminary in-situ ...

Apr. 21, 2016

By Esdat Environmental Data Software

Modelling concrete slab on rigid inclusion reinforced soil - Case Study

Project Description In the context of a wine cellar extension project, a 20cm thick concrete slab is to be constructed on a soil reinforced by rigid inclusions. Itasca France has been called by the design office to verify the mechanical resistance of the concrete slab and assess its settlement under a uniform load. The inclusions will be installed in a regular pattern. A 2D FLAC axisymmetric ...

Dec. 21, 2019

By Itasca International, Inc

CO2 - Case Study

Geological Characterization of the South Georgia Rift Basin for CO2 Storage. In 2010-11, Bay partnered with the University of South Carolina Research Foundation in the United States Department of Energy program studying the feasibility and suitability of using Jurassic/Triassic (J/TR) sediments of the South Georgia Rift Basin (SGR) for CO2 ...

Jul. 31, 2020

By Bay Geophysical, Inc.

Environmental Data Management for Groundwater Contamination

ESdat environmental data management software has been used to manage and report on large datasets generated from an investigation of groundwater contamination on an industrial facility in Adelaide. ESdat was used in managing site data and the maintenance of conceptual model and time series outputs at a complex site over an extended period. Leakages of TCE and the subsequent groundwater ...

Sep. 13, 2011

By Esdat Environmental Data Software

Finite element analysis of buried continuous pipeline subjected to fault motion

Pipeline generally extends over long distances traversing through wide variety of different soils, geological conditions and regions with different seismicity. Most analytical models developed in the past for pipeline fault crossing are of limited usage as models developed were useful only for strike slip fault. Incorporating the large geometric changes in analytical study is a tricky task; ...

Oct. 7, 2013

By Inderscience Publishers

Safety/risk assessment methodologies of deep geological facilities: results from a cross–national comparison

Any geological disposal/storage facility must prove its safe performance prior to licensing, regardless of whether the compound is solid radioactive waste (RW) or gaseous carbon dioxide (CO2). The disposal/storage facility is considered safe if it meets the relevant safety standards and proves its reliable safe performance over defined timescales. This paper presents a cross–national comparison ...

Oct. 29, 2014

By Inderscience Publishers

Dynamic Centrifuge Testing of Soil-Nailed Excavations

A series of dynamic centrifuge tests was conducted on models of soil-nailed excavations. The models were subjected to various levels of horizontal shaking to investigate the seismic stability of their prototypes. The scaling factor was 50 in all tests, the depth of the prototype excavation was H = 7.6 m, and the length of nails in each test varied between 0.33 H and 1 H. The tests revealed the ...

Jun. 1, 1993

By ASTM International

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