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A method for establishing training images of distributary sand bar delta fronts

A technique for training images and building methods, applied in instrumentation, design optimization/simulation, computing, etc., and can solve problems such as lack of literature reports

Active Publication Date: 2019-05-17
YANGTZE UNIVERSITY
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Problems solved by technology

However, the modeling method based on sedimentation process has only been applied in fluvial facies and deep-water turbidite lobe, and in delta facies reservoirs, there is no literature report

Method used

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  • A method for establishing training images of distributary sand bar delta fronts
  • A method for establishing training images of distributary sand bar delta fronts
  • A method for establishing training images of distributary sand bar delta fronts

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Embodiment 1

[0097] 1. According to the actual situation of the work area, the grid division of the training image is determined to be 200×200×100, the number of original grid points is 4,000,000, and the grid size is 10(m)×10(m)×1(m). Among them, the length of the delta front reservoir deposition range is 1600 meters, the width is 300 meters to 1300 meters, the length of the distributary sand bar is 270 meters to 320 meters, the width of the distributary sand bar is 90 to 190 meters, and the thickness of the distributary sand bar is 10 to 20 meters. The azimuth angle is 2 to 10 degrees, the downdip angle is 2 to 5 degrees, and the distributary sand bar accounts for 25%.

[0098] 2. Use the existing measurement data to determine the provenance direction and determine the depositional range of the delta front reservoir. The length of the depositional area is 1400 meters, the width is 1300 meters, the width of the source channel is 300 meters, and the thickness is 70 meters.

[0099] First, ...

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Abstract

The invention relates to a method for establishing a shunting sand bank type delta front training image. The method comprises the following steps that: generating a riverway center line in the deposition range of a delta front reservoir stratum, and taking the bifurcation of the riverway center line as a deposition original point to generate a shunting sand bank. By use of the method, the problemthat the shunting sand bank type delta front training image can not be automatically obtained is solved. Compared with an existing method, the method disclosed by the invention is flexible and convenient.

Description

technical field [0001] The invention belongs to the technical field of oil and gas exploration and development, and in particular relates to a method for establishing a training image of a distributary sand bar type delta front. Background technique [0002] Hu (2008) pointed out that multi-point geostatistical modeling transfers the difficult problem of variogram calculation in two-point statistics to three-dimensional training image acquisition. As the key input of multi-point statistics, the spatial structure and statistical laws of the reservoir are all derived from the training images. Therefore, the quality of the training images determines the accuracy of the geological model. However, in traditional geological research, geological depositional models are almost always characterized by various two-dimensional maps, and most of them are qualitative. With the introduction of various quantitative software, the quantification of 2D geological maps has been well solved, b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/50
CPCG06F30/20
Inventor 王立鑫尹艳树张昌民冯文杰尹太举
Owner YANGTZE UNIVERSITY
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