Earthquake attribute fusion method based on data property space ascending dimension

A technology of seismic attributes and fusion methods, used in seismology, seismic signal processing, geophysical measurement, etc., can solve the problems of data point identification and classification errors, information missing, incomplete and other problems

Active Publication Date: 2017-04-19
NORTHEAST GASOLINEEUM UNIV
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Problems solved by technology

When the data is displayed one-dimensionally in its property space, the displayed information is miss

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  • Earthquake attribute fusion method based on data property space ascending dimension
  • Earthquake attribute fusion method based on data property space ascending dimension
  • Earthquake attribute fusion method based on data property space ascending dimension

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Embodiment Construction

[0076]Provide a specific embodiment of the present invention below in conjunction with accompanying drawing, in order to further illustrate the present invention:

[0077] The data in this example are taken from the western part of the South 1 area of ​​Daqing Oilfield. The research target layer is the Saertu oil layer. The fracture system of this layer is complex, the reservoir is thin, and the interbeds are serious. The prediction effect of the reservoir using a single attribute is poor.

[0078] The seismic attribute fusion method based on data property space dimension increase described in the present invention, the method comprises the following steps:

[0079] (1) Extract seismic attributes, and select the attribute A with the best correlation with the reservoir in the study area 1 , A 2 .

[0080] (2) For the preferred attributes, the dimensionality reduction processing of the space where the data is located is firstly carried out, and then standardized on this basis ...

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Abstract

An earthquake attribute fusion method based on data property space ascending dimension belongs to the earthquake data oil gas prediction, oil gas resource exploration and well-log and seismic data combined reservoir prediction fields; the method comprises the following steps: carrying out high dimension expansion for a plurality of single attributes in a one-dimensional property space; building a curvilinear equation in the high dimension property space; searching reservoir domains in different zones under the control a reservoir prediction coincidence rate. The method can improve the earthquake attribute data analysis accuracy and scope, can realize earthquake attribute analysis research in the high dimension data property space, thus more accurately predicting reservoirs, and especially providing better prediction effects for a thin interbed and a thin sand layer in a fracture complex zone.

Description

Technical field: [0001] The invention relates to a seismic multi-attribute fusion method applied in the fields of seismic data oil-gas prediction, oil-gas resource exploration and well-seismic combined reservoir prediction. Background technique: [0002] Seismic attributes were proposed in the 1870s, and developed rapidly in the 1990s. Due to the introduction of a large number of advanced algorithms, seismic attributes have been developed rapidly and well. At the same time, the combination with sequence stratigraphy has made seismic attribute analysis techniques gradually It has become an important part of reservoir geophysics and plays an important role in reservoir prediction and other aspects. Seismic attributes are extracted from 3D seismic data. Affected by the quality of the data, there are often a large number of outliers in the seismic attributes; in complex fault areas, the seismic attributes are also severely disturbed by faults, which makes the reservoir predictio...

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Application Information

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IPC IPC(8): G01V1/30
CPCG01V1/307
Inventor 李婷婷马世忠许承武范广娟文慧俭丛琳王岁宝
Owner NORTHEAST GASOLINEEUM UNIV
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