Geostatistical optimization of water reservoir characterization case of the “Jeffra de Medenine” aquifer system (SE Tunisia)

Chihi, Hayet; Jeannée, Nicolas; Yahyaoui, Houcine; Belayouni, Habib; Bédir, Mourad

doi:10.1080/19443994.2013.812988

Cited by 9 publications

(5 citation statements)

References 3 publications

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“…A first attempt was published in [14], which presents the modelling results for just one surface of the aquifer system. In the present paper, we outline, while presenting the improvements made to the methodology, the modelling steps of the bounding surfaces of the aquifer system units.…”

Section: Architectural Modellingmentioning

confidence: 99%

“…In the following sections, the kriging with inequality prediction [14] is reviewed (Fig. 9) from the perspective of an optimization problem and compared with the OK subject to discontinuity constraints.…”

Section: Surface Estimationmentioning

confidence: 99%

“…49 boreholes were also used for lithostratigraphic correlation, to construct seventeen geological cross-sections (Fig. 4) and to interpret the small-scale faults [4,14]. This faulting system splits the study area into horst and graben blocks and engenders a global downtilting with important lateral facies and thickness variations toward the northeast direction.…”

Section: Geology Outlinesmentioning

confidence: 99%

“…A thorough stratigraphic and structural framework reconstruction of the study area was accomplished in order to highlight the existing relations between the aquifer system units [4,[13][14].…”

Section: Geology Outlinesmentioning

confidence: 99%

“…The KI method presented in this paper is a two-step procedure [14,22,[28][29]: first, inequality data are transformed into exact data, and then these transformed data are added to the original data set to predict the "depth" variable using OK (Fig. 9).…”

Section: ) Kriging With Inequality Constraintsmentioning

confidence: 99%

See 4 more Smart Citations

A Constrained Geostatistical Approach for Efficient Multilevel Aquifer System Characterization

Chihi¹,

Marsily²,

Bourges³

et al. 2016

JWRHE

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Abstract-In this study, the problems of parameter estimation for systems with scarce measurements are examined. In this case, an original geostatistical methodology is applied to generate bathymetric surface models of a faulted aquifer system within the Jeffara Basin in southeastern Tunisia. The modelling workflow is based on i) the spatial analysis of the data configuration and ii) the conceptual stacking pattern. This allows provision of key concepts and geostatistical approaches to be undertaken during geomodelling procedures. In fact, two constraints have been integrated: i) inequality data provided by the end of the boreholes and ii) the faults that compartmentalize the aquifer system. First, kriging with inequality was used for depth estimation of the Turonian reservoir Top. The results are compared with those from classical kriging and evaluated through the estimation quality, the adopted assumptions and the method limitations. Validation analyses show that the model developed with the inequality data leads to a significant gain in mapping accuracy and geological realism. In the second step, the geostatistical approach was used to model the successive bounding surfaces of the aquifer system units. Consequently, the kriging constrained by inequality data could be applied in a variety of hydrogeological parameters interpolations to provide significantly better informative maps that are useful for hydrodynamic modelling.

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Section: Architectural Modellingmentioning

confidence: 99%

Section: Surface Estimationmentioning

confidence: 99%

Section: Geology Outlinesmentioning

confidence: 99%

Section: Geology Outlinesmentioning

confidence: 99%

Section: ) Kriging With Inequality Constraintsmentioning

confidence: 99%

See 3 more Smart Citations

A Constrained Geostatistical Approach for Efficient Multilevel Aquifer System Characterization

Chihi¹,

Marsily²,

Bourges³

et al. 2016

JWRHE

Self Cite

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Process oriented use of geostatistics to analyse creeping para‐glacial features

Bardou

Favre-Bulle

Faucheux³

et al. 2015

Earth Surf Processes Landf

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Complex para-glacial systems may show signs of destabilization leading to frequent and potentially hazardous debrisflows. Understanding creeping permafrost displacement over a period of time is therefore crucial for hazard management and risks assessment. This paper presents our methodology for estimating creeping permafrost displacement based upon data derived from various survey methods and demonstrates its relevance on the Glacier Bonnard system in southern Switzerland. Geostatistical processing allowed estimation of the displacement intensity over the area of interest, as well as assessment of the interpolation quality. Although the local measurement network needs to be refined, the results largely improve the understanding of the Bonnard paraglacial system, though highlighting the need to locally refine the measurement network. In the present case, the destabilized front advances at~1 m/a and the upstream creeping part at~0.4 m/a. Variance analysis also provide objective thresholds that could be used to distinguish underlying physical processes.

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Building Constrained (3D) Geostatistical Models Case of the Triassic Sandstone Aquifer System (SE Tunisia)

Hammami

Chihi

Marsily

2018

Advances in Science, Technology &Amp; Innovation

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Geostatistical optimization of water reservoir characterization case of the “Jeffra de Medenine” aquifer system (SE Tunisia)

Cited by 9 publications

References 3 publications

A Constrained Geostatistical Approach for Efficient Multilevel Aquifer System Characterization

A Constrained Geostatistical Approach for Efficient Multilevel Aquifer System Characterization

Process oriented use of geostatistics to analyse creeping para‐glacial features

Building Constrained (3D) Geostatistical Models Case of the Triassic Sandstone Aquifer System (SE Tunisia)

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