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A Method for Establishing Training Image of Overlapped Lobe Delta

A technology for training images and establishing methods, applied in the field of oil and gas exploration and development, and can solve problems such as complex overlapping lobes

Active Publication Date: 2021-02-26
YANGTZE UNIVERSITY
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The complexity of the overlapping lobe poses great challenges to its fine 3D model
Due to the changing direction of lobe migration, traditional two-point geostatistics is difficult to describe its structural characteristics through a single-directional variogram

Method used

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  • A Method for Establishing Training Image of Overlapped Lobe Delta
  • A Method for Establishing Training Image of Overlapped Lobe Delta
  • A Method for Establishing Training Image of Overlapped Lobe Delta

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0115] According to the actual situation of the work area, the grid division of the training image is determined to be 200×200×40, the number of original grid points is 1600000, and the grid size is 10(m)×10(m)×1(m).

[0116] 1. According to the geological research, the parameter characteristics of multiple overlapping lobe were counted, combined with the actual statistical parameters of the research area, the input parameter library of the simulation was formed. Among them, the length of the lobe is 300 to 600 meters, the width is 300 meters to 450 meters, the thickness is 23 to 30 meters, the azimuth angle is -20° to 20°, the downtilt angle is 1° to 4°, and the lobe body accounts for 20%. , some relevant parameters such as Figure 17 shown.

[0117] 2. Use the existing measurement data to determine the provenance direction, and extract the delta sedimentary area with a length of 1900 meters, a width of 1700 meters, a thickness of 34 meters, and a supply channel width of 300...

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Abstract

The present invention relates to a method for establishing an overlapping lobe delta training image. The method includes repeating a lobe building process until an overlapping lobe delta training image is generated; the lobe building process includes the following steps (1). ): obtaining the deposition origin within the depositional range of the delta front reservoir; sub-step (2): generating lobes; sub-step (3): throwing the lobes into the depositional range of the delta front reservoir; and sub-step (4) ): determine whether the proportion of lobes in the study area is satisfied. The method of the invention solves the problem of automatic acquisition of overlapping lobe delta training images. It is based on the existing experience and knowledge, combined with the statistical parameter constraints of the research area, so that the training images are more consistent with the actual work area.

Description

technical field [0001] The invention relates to the technical field of oil and gas exploration and development, in particular to a method for establishing a superimposed lobe delta training image. Background technique [0002] Sand bodies distributed in a large area at the delta front are very favorable reservoirs and exploration and development targets, and are widely developed in the Ordos Basin and Bohai Bay Basin in my country. The cause of its formation has recently been considered to be superimposed lobe deposition through modern sedimentary investigations and sedimentary physics experiments (Zhang Changmin et al., 2010). The superimposed lobe delta is different from the basic unit of the delta lobe in the distributary channel system formed by the distributary channel, mouth bar, and sheet sand in the conventional delta, but the fan-shaped lobe as the basic unit, and the distributary channel is only It is a sand transport channel, and the material carried by it spread...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06F111/04
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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