Automatic identification method for reservoir configuration interface in oil reservoir geologic model

A reservoir geological model, automatic recognition technology, applied in character and pattern recognition, 3D modeling, image data processing, etc.

Active Publication Date: 2020-07-10
CHINA PETROLEUM & CHEM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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  • Automatic identification method for reservoir configuration interface in oil reservoir geologic model
  • Automatic identification method for reservoir configuration interface in oil reservoir geologic model
  • Automatic identification method for reservoir configuration interface in oil reservoir geologic model

Examples

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Embodiment 1

[0066] Embodiment A pair of reservoir model grids is traversed to extract configuration boundaries and identify them

[0067] image 3 A fine reservoir model grid generated by stochastic simulation is given. The grid attributes are facies attributes and reservoir structural unit attributes, as shown in the figure, different types of reservoir structural units and the same type of different levels of reservoirs The distribution of structural units is very complex both on the plane and vertically. This algorithm helps geological researchers identify the boundaries of each reservoir structural unit.

Embodiment 2

[0068] Example 2 Extracting the reservoir structure units included in the grid of the reservoir model

[0069] Figure 4 The reservoir geological model of a certain actual work area is given, and the method is applied to divide the reservoir structure units, and the grids belonging to different reservoir layer structure units are extracted to form different grid sets, and these grid sets are applied to Quantitative statistics, analysis and calculation of reservoir structural units. Figure 5 display a collection of partial reservoir structural units, Image 6 Shown is a single reservoir structural unit, for Figure 7 The displayed meandering river type reservoir structural units were statistically analyzed as follows;

[0070] Geometric attributes: the average width of the river is 52.3 meters, the maximum width of the river is 78.1 meters, the curvature of the river is 3.8, the average thickness is 35.6 meters, and the direction of the main stream of the river is 43.2 degr...

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Abstract

The invention provides an automatic identification method for a reservoir configuration interface in an oil reservoir geologic model. The automatic identification method for the reservoir configuration interface in the oil reservoir geologic model comprises the following steps: 1, initializing basic parameters; 2, traversing the grids according to the IJK; 3, traversing the grids of the configuration geometry formed in the step 2; 4, traversing the configuration geometry grid set generated in the step 3 to generate a configuration geometry boundary grid set; 5, adding the geomorphic geometry into the configuration set established in the step 1, returning to the step 2, and continuing to traverse the grids until all the grids are traversed and stored. The automatic identification method forthe reservoir configuration interface in the oil reservoir geologic model can describe the connectivity between different configuration units (interfaces), count geometric attributes and physical property parameters of the configuration units, and provide a basis for configuration unit-based remaining oil analysis and scheme optimization.

Description

technical field [0001] The invention relates to the technical field of oilfield development, in particular to a method for automatically identifying reservoir configuration interfaces in an oil reservoir geological model. Background technique [0002] Reservoir architecture unit research is the main means to finely describe the geological model, especially for ultra-high water-cut reservoirs, the seepage barrier effect of the architecture interface affects the distribution of remaining oil and the adjustment to tap potential. The seepage barrier and seepage difference formed inside the reservoir due to the distribution of reservoir configuration is an important reason for the retention of a large amount of movable remaining oil in the ground. Therefore, research on underground reservoir architecture is of great significance for improving the accuracy of reservoir numerical simulation, finding remaining oil-enriched areas, and improving reservoir recovery. [0003] Since the...

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Application Information

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IPC IPC(8): G06K9/62G06T17/05G06T17/20
CPCG06T17/05G06T17/20G06T2200/04G06F18/24Y02A10/40
Inventor 张以根王军于金彪曹伟东陈苏史敬华马泮光杨耀忠杜玉山陶国华
Owner CHINA PETROLEUM & CHEM CORP
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