3-D Land Seismic Surveys: Definition of Geophysical Parameter

Chaouch, A.B.; Mari, Jean-Luc

doi:10.2516/ogst:2006002

Cited by 26 publications

(21 citation statements)

References 3 publications

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“…More information of geophysical methods and tools can be found in Mari et al (1999) , Glangeaud & Mari (2000), Robein (2003 ) and Chaouch & Mari (2006 ).…”

Section: Geophysical Methodsmentioning

confidence: 99%

Contribution of Seismic and Acoustic Methods to Reservoir Model Building

Mari¹,

Delay²

2011

Hydraulic Conductivity - Issues, Determination and Applications

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“…More information of geophysical methods and tools can be found in Mari et al (1999) , Glangeaud & Mari (2000), Robein (2003 ) and Chaouch & Mari (2006 ).…”

Section: Geophysical Methodsmentioning

confidence: 99%

Contribution of Seismic and Acoustic Methods to Reservoir Model Building

Mari¹,

Delay²

2011

Hydraulic Conductivity - Issues, Determination and Applications

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“…The application of mixed‐radix representation to orthogonal split‐spread seismic survey design can be done by reparametrizing its elements. Figure (a–c) shows the key parameters of a three‐dimensional land orthogonal seismic survey and a full description can be found in Chaouch and Mari ().…”

Section: Theory: Mixed‐radix Representation Algorithmmentioning

confidence: 99%

“…The application of mixed-radix representation to orthogonal split-spread seismic survey design can be done by reparametrizing its elements. Figure 1(a-c) shows the key parameters of a three-dimensional land orthogonal seismic survey and a full description can be found in Chaouch and Mari (2006). Table 2 shows the natural parameters that generates the regular orthogonal geometry based on the the way we acquire data in the field, the template, as well as other important parameter that can be derived.…”

Section: Application To 3d Seismic Survey Designmentioning

confidence: 99%

3D Seismic survey design using mixed‐radix based algorithm inversion

Santos

Porsani

Góis

2019

Geophysical Prospecting

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The determination of three‐dimensional geometry and acquisition parameters, the seismic acquisition survey design, is constantly subject of studies in obtaining data with the highest seismic quality, operational efficiency and cost minimization. In this paper, we propose a methodology for inverting geometry parameters of three‐dimensional orthogonal land seismic surveys based on a direct search method using a mixed‐radix based algorithm. In this algorithm, the search space is discretized on a mixed‐radix base, which depends on the extreme values and the search resolution of each parameter. We will show how to reparametrize the orthogonal acquisition geometry elements in order to obtain the independents and integers parameters that are necessary to construct the mixed‐radix base. For the optimization purpose, we define an objective function to contemplate target parameters associated with the elements of the acquisition geometry directly related to the geophysical and operational constraints. Taking in account that the mathematical functions and the objective function we define for the problem have no significant computational cost, all model space parameters are fast and efficiently tested. We applied the algorithm, using as input data, provided by a one‐line roll orthogonal reference geometry, assuming a pair of geological objectives as shallow and deep targets. All selected models that meet both the proposed objectives and the constraints are organized by decreasing order of fitness so that with the mixed‐radix inversion algorithm we found not only the best model, but also a set of suitable models. Likewise, with the best set of geometries, it is possible to establish a direct comparison between them, analysing their adherence to the technical and operational requirements according to the availability and degree of detail of each one. We show the top 10 best results as a table, allowing a direct comparison between all aspects of these geometries, and we summarize the results showing graphically the fitness of all selected geometries and the inverted geometry elements for the 1000 best geometries. These graphical displays provide a direct way to understand how each model behaves as the fitness decreases. The algorithm is very flexible and its application can be extended to any environment and type of acquisition geometry, and in any phase study of an area be it regional, exploratory or development.

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“…Its procedure is illustrated in Figures 1 and 2. In the specific field case, Mari (2006) has shown the benefit of combining two different wave-separation methods in order to remove all the energetic wave-field. The conventional F-K method is used to filter surface waves and converted refracted waves.…”

Section: Preliminary Studies and Spread Designsmentioning

confidence: 99%

“…In well C1 situated in the central part of the site, a Vertical Seismic Profile (VSP, Mari and Coppens, 2003) has been recorded. VSP data have been processed to obtain a time versus depth relationship and a velocity model (Mari, 2006). The velocity model has been used to apply the normal move -out correction to the residual section in order to obtain a zero offset section at normal incidence.…”

Section: Reflection Seismic Surveyingmentioning

confidence: 99%

3D Seismic Imaging of a Near-Surface Heterogeneous Aquifer: A Case Study

Mari

Porel

2007

Oil & Gas Science and Technology - Rev. IFP

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Résumé -Imagerie sismique 3D d'un aquifère hétérogène proche de la surface -Différentes acquisitions sismiques ont été réalisées sur le site hydrologique expérimental de Poitiers (France). Ce papier montre comment la sismique 3D peut être mise en oeuvre et traitée pour décrire un aquifère hétérogène proche de la surface. Le dispositif d'acquisition a été choisi pour obtenir à la fois une imagerie par réfraction et par réflexion. La sismique réfraction a permis d'obtenir une image en profondeur du toit de l'aquifère carbonaté. Une analyse géostatistique et un filtrage par krigeage factoriel ont permis d'améliorer l'image sismique et de rechercher des structures à grande échelle. Deux directions de structure ont ainsi pu être mises en évidence. La direction principale est orientée N90 et la direction secondaire N50. Ces deux directions ont été retenues pour implanter les puits déviés C3 et C4. La sismique réflexion a permis d'obtenir un bloc de vitesse 3D en profondeur. La résolution verticale a pu être améliorée par déconvolution après conversion profondeur. Un filtre de Wiener, défini au puit de référence C1 a permis de convertir les traces sismiques en vitesses d'intervalle. Les résultats obtenus ont été validés sur quatre puits (MP6, MP5, M8, M9) où des diagraphies acoustiques avaient été au préalable enregistrées. Le bloc de vitesse sismique montre la forte hétérogénéité du réservoir aquifère et confirme les orientations principales des structures mises en évidence par réfraction. À une profondeur donnée, la distribution des vitesses sismiques met en évidence des chemins préférentiels de connexion entre puits. À titre d'exemple des tests d'interférence et des pompages confirment la connexion hydraulique entre les puits M13 et M21, situés dans une zone à vitesse sismique lente à la profondeur de 88 m. Abstract -3D Seismic Imaging of a Near-Surface Heterogeneous

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3-D Land Seismic Surveys: Definition of Geophysical Parameter

Cited by 26 publications

References 3 publications

Contribution of Seismic and Acoustic Methods to Reservoir Model Building

Contribution of Seismic and Acoustic Methods to Reservoir Model Building

3D Seismic survey design using mixed‐radix based algorithm inversion

3D Seismic Imaging of a Near-Surface Heterogeneous Aquifer: A Case Study

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