Phased tendency energy matching seismic amplitude preservation evaluation method

A technology of energy matching and trend, applied in seismic signal processing and other directions, can solve the problem that the accuracy needs to be improved

Active Publication Date: 2016-04-06
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

These methods have very important practical significance, but these methods can only qualitatively evaluate the amplitude preservation of seismic data, and the accuracy still needs to be improved

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  • Phased tendency energy matching seismic amplitude preservation evaluation method
  • Phased tendency energy matching seismic amplitude preservation evaluation method
  • Phased tendency energy matching seismic amplitude preservation evaluation method

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Embodiment Construction

[0026] In order to make the above and other objects, features and advantages of the present invention more comprehensible, a detailed description is given below in conjunction with the accompanying drawings.

[0027] like figure 1 as shown, figure 1 It is a flow chart of the specific implementation of the phase-controlled trend energy matching earthquake amplitude preservation evaluation method of the present invention.

[0028] Firstly, step 101 is performed to simulate the seismic response of a single well log (one-dimensional forward modeling synthetic record) ( figure 2 ).

[0029] Step 102, performing correlation and amplitude coefficient calculation on the logging seismic response and the seismic imaging result. According to the size of the coefficient, the seismic imaging results are quantitatively constrained vertically ( image 3 , Figure 4 ). When the amplitude coefficient is 70%60%, it means that the seismic imaging data meets the requirements of amplitude-p...

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Abstract

The invention provides a method for evaluating seismic amplitude preservation performance by utilizing phased tendency energy matching. The research shows that a soft constraint relation usually exists between seismic (response) attributes and reservoir parameters, namely, a correlativity within a certain range rather than a determined mathematical relation exists between the seismic (response) attributes and reservoir parameters. According to the principle, the phased tendency energy matching seismic amplitude preservation evaluation method utilizes a reservoir oriented forward modeling result to provide spatially continuous soft constraint information for (waveform) amplitude preservation imaging modeling, and reduce uncertainty of a model, so as to increase seismic imaging precision. The phased tendency energy matching seismic amplitude preservation evaluation method is used for evaluating amplitude preservation performance of seismic data from the aspects of sedimentology and seismic interpretation for the first time.

Description

technical field [0001] The invention relates to the field of exploration geophysical seismic data processing methods, in particular to a method for evaluating amplitude preservation of seismic data from the perspectives of sedimentology and seismic interpretation. Background technique [0002] With the gradual deepening of exploration, the goal of seismic exploration has changed from structural interpretation to lithology identification and reservoir description, and the amplitude-preserving imaging processing of seismic data for lithology reservoir description is extremely important. [0003] How to conduct amplitude-preserving quantitative analysis of imaging results has always been controversial. In production practice, researchers have also proposed some evaluation methods for amplitude preservation, which mainly include the following aspects: ① Use imaging effects and time slices to analyze the amplitude preservation of imaging, that is, qualitatively analyze the imagin...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
Inventor 潘兴祥谭明友张云银王惠勇曲志鹏雷蕾于景强
Owner CHINA PETROLEUM & CHEM CORP
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