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Method for automatic tracking 3D geological horizon

An automatic tracking and geological horizon technology, applied in seismic signal processing and other directions, can solve the problems of limited use range, difficult to widely use, and reduced tracking quality, and achieve the goal of improving tracking quality, improving work efficiency, and accurate spatial horizon tracking. Effect

Active Publication Date: 2007-11-14
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the scope of use of automatic spatial horizon tracking is limited, and the quality of tracking is greatly reduced, making it difficult to be widely used

Method used

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  • Method for automatic tracking 3D geological horizon
  • Method for automatic tracking 3D geological horizon
  • Method for automatic tracking 3D geological horizon

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] (1) In the collected seismic data, use the mouse to define 3 seed points in the 720th line section along the Line direction, as shown in Figure 7, three points 5, 6, and 7 are stored in the seed point queue. The order of storage is the same as the order of picking up seed points. The seed point queue is a linear queue, as shown in the figure below to illustrate the storage of seed points.

[0046] The first seed point picked

[0047] (2) Define the tracking range. The actual volume data used is Line direction: from 450 lines to 790 lines; CDP direction: from 350 to 500 channels; Time direction: from 1350ms to 1600ms. The defined tracking range can only be in Line, Within the scope of CDP. According to the actual data, choose to track all Lines and CDP ranges.

[0048] (3) Define the horizon automatic tracking parameters, where the picking position is the peak, the picking method is the correlation comparison algorithm and the amplitude comparison algorithm, ...

Embodiment 2

[0056] (1) Use the interpreted horizon data as seed points in the collected seismic data, and store them in the seed point queue.

[0057] (2) Define the tracking range.

[0058] (3) Define the horizon automatic tracking parameters, where the picking position is the trough, the picking method is the correlation comparison algorithm and the amplitude comparison algorithm, and the tracking method is the two-point calibration method.

[0059] (4) The user selects the name of the fault as a fault barrier, screens the fault data, removes faults without actual data, removes faults that cannot be constructed, and automatically fits each selected fault into a fault plane.

[0060] (5) Use the seed point whose serial number is 1 in the seed queue as the first current working seed point, and search for the target point in its adjacent lines and roads;

[0061] (6) The target points that have not been tracked and meet the horizon tracking conditions are compared with the seed points to ...

Embodiment 3

[0065] (1) Use the interpreted horizon data as seed points in the collected seismic data, and store them in the seed point queue.

[0066] (2) Define the tracking range.

[0067] (3) Define the horizon automatic tracking parameters, where the picking position is the zero-crossing point value, the picking method is the correlation comparison algorithm and the amplitude comparison algorithm, and the tracking method is the four-point calibration method.

[0068] (4) The user selects the name of the fault as a fault barrier, screens the fault data, removes faults without actual data, removes faults that cannot be constructed, and automatically fits each selected fault into a fault plane.

[0069] (5) Use the seed point whose serial number is 1 in the seed queue as the first current working seed point, and search for the target point in its adjacent lines and roads;

[0070] (6) The target points that have not been tracked and meet the horizon tracking conditions are compared with...

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Abstract

The invention is a 3D geological bed location automatic tracking method, defining a seed point on a 3D seismic data body; defining a tracking range; defining bed location automatic track-pickup position parameters; selecting a pickup method; selecting a tracking method; selecting faults and fitting them into a fault surface; determining the first current operating seed point and searching target points on its adjacent lines and paths; comparing the target points with the seed point to obtain the points according with the bed location automatic track-pickup method and determining a new seed point, thus improving tracking quality and able to make 3D geological bed location automatic tracking on the whole seismic data.

Description

technical field [0001] The invention relates to a geophysical prospecting seismic data processing and interpretation technology, and is a three-dimensional geological horizon automatic tracking method. Background technique [0002] After obtaining the seismic data, it is necessary to search for the position and direction of the geological horizon in the map generated by the seismic data, and then display the shape of the three-dimensional fault and the structure of the geological body. [0003] In the previous work, the interpreters usually manually marked the points and horizons one by one on the section. For a large amount of 3D seismic data, sometimes the method of automatic tracking of spatial horizons was used, which can quickly process a large amount of seismic data, search for geological horizon. [0004] Actual seismic data usually have a large number of faults. When a horizon encounters a fault, the same geological horizon is cut and staggered by the fault. In th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/28G01V1/34
Inventor 严涛钱宇明王强于海生张中平
Owner BC P INC CHINA NAT PETROLEUM CORP
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