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Location-based multi-point geostatistical modeling method

A technology of geostatistics and modeling methods, applied in 3D modeling, calculation, image data processing, etc., can solve the problems of scale differences between training images and simulated areas, achieve the effect of flexible application and improve prediction accuracy

Inactive Publication Date: 2017-11-28
YANGTZE UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiency of above-mentioned background technology, provide a kind of position-based multi-point geostatistical modeling method, solve the training image and simulated area scale difference problem, the method is used flexibly, has improved delta front reservoir Fine prediction accuracy, obtaining a more accurate 3D reservoir geological model

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Embodiment

[0046] In the following, the present invention will be further explained on the location-based multi-point geostatistical modeling of the delta front in a certain work area.

[0047] The data in this embodiment are well data and gridded work areas.

[0048] Work area scale: the specification is columns (number of columns)*rows (number of rows)*layers (vertical grid), specifically (columns=199, rows=199, layers=10), and the number of original grid points is 3,96010. The X coordinate value is cellsize1X (cellsize1X=10), the Y coordinate value is cellsize1Y (cellsize1Y=10), the Z coordinate value is cellsize1Z (cellsize1Z=1), and the X, Y, and Z coordinate values ​​are only A starting value (5, 5, 0.5).

[0049] The grid is designed in accordance with the standard rectangular grid. The three-dimensional coordinate values ​​of all grid centers can be calculated by starting point and interval.

[0050] 1. Establishment of geological database in the work area:

[0051] See image 3 Accordi...

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Abstract

The invention discloses a position-based multi-point geostatistical modeling method, which comprises the following steps: step 1, establishing a geological database of a working area; step 2, establishing a training image; step 3, calculating relative distances; step 4, replacing data as a whole Event; step five, build a model. The invention solves the problem of scale difference between the training image and the simulated area, the method is flexible, improves the fine prediction accuracy of the delta front reservoir, obtains a more accurate three-dimensional reservoir geological model, and can be widely used in the technical field of oil and gas exploration and development.

Description

Technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to a location-based multi-point geostatistical modeling method. Background technique [0002] The traditional two-point statistical modeling method based on variogram has played a huge role in the establishment of three-dimensional geological models of continental sedimentary reservoirs, and has strongly promoted the development of fine and quantitative reservoir description. However, the two-point variogram is difficult to describe the complex morphology of the reservoir (such as a curved channel), and it is necessary to rely on the combination of multiple spatial points to finely describe the relationship between the reservoir morphology and the spatial configuration. Multi-point geostatistics has been established and developed. It uses multi-point templates (data templates) to scan training images (conceptualized quantitative geological models) to obtai...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50G06T17/05
Inventor 尹艳树张昌民王军李少华
Owner YANGTZE UNIVERSITY