History Matching and Quantitative Use of 4D Seismic Data for an Improved Reservoir Characterization

Mezghani, M.; Fornel, A.; Langlais, Valérie; Lucet, Nathalie

doi:10.2118/90420-ms

Cited by 51 publications

(12 citation statements)

References 6 publications

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“…Then, impedances are derived from elastic moduli and are transferred into seismic domain. We ensure the same frequency range as seismic signal using an appropriate band pass filter (Mezghani et al, 2004).…”

Section: Forward Modelingmentioning

confidence: 99%

Simultaneous Inversion of Production Data and Seismic Attributes: Application to a Synthetic SAGD Produced Field Case

Tillier

Ravalec

Veiga

2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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Résumé -Inversion simultanée des données de production et des attributs sismiques : application à un champ synthétique produit par injection de vapeur -L'utilisation conjointe des données de production et des attributs de sismique répétée facilite la compréhension des mouvements de fluide dans les formations géologiques et aide à la construction de modèles numériques fiables représentant ces formations. Ceci a récemment motivé le développement de techniques d'inversion ou de calage dédiées à l'identification de modèles cohérents avec l'ensemble des données disponibles. La méthodologie décrite dans ce papier permet de déterminer les cartes de propriétés pétrophysiques comme les faciès, les porosités ou les perméabilités à partir des données de production et des attributs de sismique répétée. Elle est appliquée avec succès à un champ synthétique d'huile lourde produite par injection de vapeur. Ce cas d'étude, inspiré d'un cas réel, illustre comment définir une méthodologie d'inversion qui respecte l'ensemble des données disponibles. L'étude est centrée sur trois points particuliers de la méthodologie qui sont les clés du succès. Premièrement, le choix de la paramétrisation est essentiel. La paramétrisation doit permettre des variations locales avec peu de paramètres. Deuxièmement, cette étude met en évidence la nécessité d'une formulation alternative pour mesurer l'erreur entre les attributs sismiques de référence et les attributs sismiques simulés. Finalement, nous étudions deux approches pour l'intégration des attributs sismiques de référence. Ils peuvent être intégrés en temps ou bien en profondeur. Nous montrons que, dans le cas étudié, ce dernier point n'influence pas la qualité du résultat obtenu car l'erreur de conversion temps-profondeur est faible. (after a time-to-depth conversion). In the case studied, it is shown that the two approaches are equivalent since time-to depth-conversion error is quite small.

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Section: Forward Modelingmentioning

confidence: 99%

Simultaneous Inversion of Production Data and Seismic Attributes: Application to a Synthetic SAGD Produced Field Case

Tillier

Ravalec

Veiga

2012

Oil Gas Sci. Technol. – Rev. IFP Energies nouvelles

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“…Time lapse seismic (4D) technique is specialized in dynamic monitoring through seismic responses changing with time. This technique plays an important role in remaining reserves identification in mature field (Mezghani et al, 2004). Inter-well seismic technique focus on reservoir lateral heterogeneity and provide inter-well peterophysical parameters for reservoir modeling (Justice et al, 2000).…”

Section: Reservoir Prediction With Application Of High Resolution Seimentioning

confidence: 99%

Advances and Challenges of Reservoir Characterization: A Review of the Current State-of-the-Art

Jia¹,

He²,

Cai³

2012

Earth Sciences

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“…The methodology provided an indirect estimate of the c M in loading/reloading conditions. Moreover, 4D seismic data, that is, time-lapse 3D seismic surveys, can be used as indirect information for the prediction of reservoir petrophysical properties (Mezghani et al 2004;Hatchell & Bourne 2005;Herwanger & Horne 2009). …”

Section: Introductionmentioning

confidence: 99%

On the importance of the heterogeneity assumption in the characterization of reservoir geomechanical properties

et al. 2016

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SUMMARYThe geomechanical analysis of a highly compartmentalized reservoir is performed to simulate the seafloor subsidence due to gas production. The available observations over the hydrocarbon reservoir consist of bathymetric surveys carried out before and at the end of a ten-year production life. The main goal is the calibration of the reservoir compressibility c M , i.e., the main geomechanical parameter controlling the surface response. Two conceptual models are considered: in one (a) c M varies only with the depth and the vertical effective stress (heterogeneity due to lithostratigrafic variability); in another (b) c M varies also in the horizontal plane, that is, it is spatially distributed within the reservoir stratigraphic units. The latter hypothesis accounts for a possible partitioning of the reservoir due to the presence of sealing faults and thrusts that suggests the idea of a block heterogeneous system with the number of reservoir blocks equal to the number of uncertain parameters. The method applied here relies on an ensemble-based data assimilation (DA) algorithm (i.e., the Ensemble Smoother, ES), which incorporates the information from the bathymetric measurements into the geomechanical model response to infer and reduce the 2 C. Zoccarato, D. Baù, F. Bottazzi, M. Ferronato, G. Gambolati, S. Mantica, & P. Teatini uncertainty of the parameter c M . The outcome from conceptual model (a) indicates that DA is effective in reducing the c M uncertainty. However, the maximum settlement still remains underestimated, while the areal extent of the subsidence bowl is overestimated.We demonstrate that the selection of the heterogeneous conceptual model (b) allows to reproduce much better the observations thus removing a clear bias of the model structure.DA allows significantly reducing the c M uncertainty in the five blocks (out of the seven) characterized by large volume and large pressure decline. Conversely, land subsidence can constrain only partially the partitions that marginally contributes to the cumulative displacements of the seafloor.

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History Matching and Quantitative Use of 4D Seismic Data for an Improved Reservoir Characterization

Cited by 51 publications

References 6 publications

Simultaneous Inversion of Production Data and Seismic Attributes: Application to a Synthetic SAGD Produced Field Case

Simultaneous Inversion of Production Data and Seismic Attributes: Application to a Synthetic SAGD Produced Field Case

Advances and Challenges of Reservoir Characterization: A Review of the Current State-of-the-Art

On the importance of the heterogeneity assumption in the characterization of reservoir geomechanical properties

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