Method for picking position faces in batched mode based on constraint in three-dimensional seismic interpretation

A 3D seismic and layer plane technology, applied in seismic signal processing, etc., can solve the problems of high time consumption, large labor demand, and low efficiency

Active Publication Date: 2014-08-06
NANJING UNIV
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Problems solved by technology

[0010] The problem to be solved by the present invention is that the fault extraction of traditional 3D seismic inte

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  • Method for picking position faces in batched mode based on constraint in three-dimensional seismic interpretation
  • Method for picking position faces in batched mode based on constraint in three-dimensional seismic interpretation
  • Method for picking position faces in batched mode based on constraint in three-dimensional seismic interpretation

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Embodiment Construction

[0058] Due to the diversity of geological types, some geological stratifications can be accurately identified and extracted with tools such as OpendTect. Therefore, on this basis, the identified upper and lower smooth layer planes can be used as constraint surfaces, and there will be multiple complex layer planes between these two constraint surfaces, which may also contain faults. The constraint surface can provide a lot of information, such as the trend of the current horizon, the dip angle information of each sample point, etc. It can be seen on the amplitude profile graph, the trend of the adjacent horizon plane, and the intersection of each same seismic trace The inclination angles of the sample points are similar, so the inclination angle information of the constraining surface can be used as the guiding information of the plane to be identified. These contents can be used to form the constraint conditions to be satisfied for picking the middle horizon, thereby making th...

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Abstract

The invention discloses a method for picking position faces in a batched mode based on the constraint in three-dimensional seismic interpretation. An upper position face and a lower position face which are picked manually or in other modes serve as constraint faces, known conditions provided by the constraint position faces are obtained, the interaction relation between middle position faces to be picked is combined, and all position faces between the constraint position faces are picked synchronously. The new method for automatically picking a plurality of position faces with constraint information added is provided, the information of the upper constraint position face and the information of the lower constraint position face are combined in the method, and auxiliary information of the position faces to be picked is provided. A seed seismic channel spreading method is adopted on sample points which are obtained through filtering, and the accuracy and the time efficiency can be improved.

Description

technical field [0001] The invention belongs to the technical fields of computer algorithm, computer image processing and geological modeling, and is a method for automatically picking up multiple horizons at the same time based on global optimization, using constrained horizons as auxiliary information combined with seed seismic trace spread search . Background technique [0002] Seismic exploration technology is an important technical means for oil and gas exploration. The interpretation efficiency of seismic interpretation and the accuracy of interpretation results directly affect the exploration benefits. Therefore, research on seismic interpretation algorithms, improving the calculation efficiency of seismic interpretation algorithms, and improving the interpretation accuracy of seismic interpretation algorithms can effectively shorten the seismic exploration cycle and save exploration costs. . [0003] Since the artificial seismic wave is reflected by the geological ...

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Application Information

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IPC IPC(8): G01V1/28
Inventor 唐杰孔雪娇武港山魏强
Owner NANJING UNIV
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