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Fault interpretation processing method by slicing along structural trend surface

A processing method and technology of fault interpretation, applied in the direction of seismic signal processing, etc., can solve problems such as failure to respond well to fault trend and occurrence changes, and achieve a reasonable effect of seismic interpretation

Inactive Publication Date: 2015-02-04
CHINA PETROLEUM & CHEM CORP +1
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  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a slice fault interpretation processing method along the structural trend surface to solve the problem that the existing fault interpretation adopts horizontal time (coherent) slice or slice along the layer, which cannot reflect the fault trend and occurrence change well.

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  • Fault interpretation processing method by slicing along structural trend surface
  • Fault interpretation processing method by slicing along structural trend surface
  • Fault interpretation processing method by slicing along structural trend surface

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Embodiment Construction

[0020] The specific embodiments of the present invention will be further described below in conjunction with the accompanying drawings.

[0021] The present invention aims at the problems existing in the background technology, utilizes the existing technology, through three-dimensional visualization, according to the stratum development characteristics in different regions, and follows the law of stratum development to view and slice research, finely describe the occurrence and direction of faults, and straighten out fault cutting relationship, find small faults, clarify the distribution of fault systems, and achieve the purpose of fine structure interpretation. The specific implementation process includes the following steps.

[0022] 1. Perform denoising and frequency extension processing on the original 3D seismic data to broaden the effective frequency band of the seismic data and improve the signal-to-noise ratio of the seismic data.

[0023] 2. On the basis of the seismi...

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Abstract

The invention relates to a fault interpretation processing method by slicing along structural trend surface and belongs to the technical field of seismic data processing. The method is characterized by, according to development characteristics of stratums in different areas, carrying out slice research based on stratum development rules; through carrying out horizon grid interpretation on a target stratum in the seismic data, determining time range of the target stratum to obtain structural trend of the stratum; and carrying out slicing along the structural trend surface of the stratum in the three-dimensional seismic data, and the obtained slice can truly reflect the fault formation shape and trend in the period, so that the purpose of fault interpretation is achieved. The method overcomes the defects that conventional slices cannot truly reflect the fault system distribution along the structure trend, so that the influence of man-made factors on horizon slice result is prevented; minor fault is effectively identified, especially the interlayer minor fault; seismic interpretation is allowed to be more reasonable; reliable basis is provided for fault system combination; minor fault block entrapment is realized precisely; and the method provides basis for the oil field exploration and development and well deployment.

Description

technical field [0001] The invention relates to a slice fault interpretation processing method along a structural trend plane, and belongs to the technical field of seismic data processing. Background technique [0002] The biggest problem in seismic interpretation is fault interpretation. The reliability and rationality of fault interpretation directly affect the degree of structural confirmation. Due to the large variety of fault types, the large differences in scale, and the different formation mechanisms and structural backgrounds, in seismic interpretation, Comprehensive application of various technical means to identify faults. [0003] At present, in the process of using 3D seismic data to interpret faults, fault interpretation is mainly completed through "points", "lines", "surfaces" and "volumes". The online interpretation of the seismic profile is completed, and the interpretation of the fault plane is completed by multi-line interpretation combined with geologica...

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Application Information

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IPC IPC(8): G01V1/30G01V1/28
Inventor 李恒权罗家群李磊杨云飞张永华朱颜张帆朱文方郑融曲洁吴群林威
Owner CHINA PETROLEUM & CHEM CORP
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