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Method for making a reservoir facies model utilizing a training image and a geologically interpreted facies probability cube

A technology for training images and reservoir facies, applied in simulation process, seismology, geophysical measurement, etc. for specific applications, and can solve problems such as inexplicability

Inactive Publication Date: 2007-07-25
CHEVROU USA INC
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  • Application Information

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Problems solved by technology

Neither simulation method can account for valuable information that can be provided by geologists / geophysicists alone in their interpretation of the geological setting of the reservoir based on their knowledge of the sedimentary geology of the simulated area

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  • Method for making a reservoir facies model utilizing a training image and a geologically interpreted facies probability cube
  • Method for making a reservoir facies model utilizing a training image and a geologically interpreted facies probability cube
  • Method for making a reservoir facies model utilizing a training image and a geologically interpreted facies probability cube

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Embodiment Construction

[0040] Figure 1 shows a workflow 100 for creating a reservoir facies model in accordance with a preferred embodiment of the present invention. In particular, the workflow uses training images in geostatistical simulations, combined with geologically interpreted facies probability cubes as soft constraints, to create reservoir facies models. The first step 110 in the workflow is to construct an S-grid representing the simulated subsurface region. The S-grid geometry is related to reservoir stratigraphy. Training images reflecting the interpreted facies types, their geometry, associations and heterogeneity are created in step 120 . A geologically interpreted facies probability cube is then created in step 130 . This facies probability cube captures information about the relative spatial distribution of facies in the S-grid based on geologic depositional information and conceptualization. The facies probability cube ideally obeys local facies distribution information such as w...

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Abstract

A method for creating a reservoir facies model is disclosed. A S-grid is created which is representative of a subterranean region to be modeled. A training image is constructed which includes a number of facies. The training image captures facies geometry, associations and heterogeneity among the facies. A facies probability cube corresponding to the S-grid is derived from a geological interpretation of the facies distribution within the subterranean region. Finally, a geostatistical simulation, preferably a multiple-point simulation, is performed to create a reservoir facies model which utilizes the training image and facies probability cube and is conditioned to subsurface data and information. Ideally, the facies probability cube is created using an areal depocenter map of the facies which identifies probable locations of facies within the S-grid.

Description

[0001] Cross references to related patent applications [0002] This application is hereby incorporated by reference in its entirety into the following co-pending applications: [0003] Co-submitted "Method for Creating Facies Probability CubesBased Upon Geologic Interpretation (Method for Creating Facies Probability Cubes Based on Geological Interpretation)", Attorney Application No. T-6359. [0004] Co-filed "Multiple-Point Statistics (MPS) Simulation with Enhanced Computational Efficiency," Attorney Application No. T-6411. technical field [0005] The present invention generally relates to a method for constructing a reservoir facies model, in particular to an improved method for creating a reservoir facies model by using training images and facies probability cubes. Background technique [0006] Reservoir flow simulations typically use a 3D static model of the reservoir. The static model includes a 3D stratigraphic grid (S-grid) typically containing millions of cells, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06G7/48
CPCG01V1/30G01V2210/66
Inventor 瑟巴斯汀·B·斯卓伯乐朱丽安·A·索尼安竹·W·哈丁马卓瑞·E·莱维谢德宜
Owner CHEVROU USA INC
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