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Seismic attribute optimization method and device

A technology of seismic attributes and optimization methods, applied in the field of geophysical exploration, can solve problems such as lack of theoretical basis, strong multi-solution, and difficulty, and achieve sufficient theoretical proof and accurate optimization results

Active Publication Date: 2017-03-15
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

Although experts can sometimes propose several sets of better seismic attributes or combinations of seismic attributes, it is difficult to further determine which set is the best
[0006] In the existing technology, the method of optimizing seismic attributes based on expert knowledge has strong multi-solutions and insufficient stability, and the selection process is mainly based on personal experience, lacking sufficient theoretical basis. Methods

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  • Seismic attribute optimization method and device

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Embodiment Construction

[0022] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described The embodiments are only some of the embodiments of the present application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by persons of ordinary skill in the art without creative efforts shall fall within the scope of protection of this application.

[0023] The target fracture prediction technology based on seismic data mainly includes shear wave splitting technology, multi-wave and multi-component technology, multi-azimuth VSP (Vertical Seismic Profiling, vertical seismic profile) technology, anisotropic AVO (Amplitude variation with offset) and amplitude and azimuth anisotropy, etc. ...

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Abstract

The embodiment of the invention discloses a seismic attribute optimization method and device. The seismic attribute optimization method comprises the steps of calculating a first fracture characteristic of a work area based on micro-seismic data; as for each seismic attribute in a preset seismic attribute set, calculating a second fracture characteristic of the work area based on the seismic attribute; selecting a second fracture characteristic matched with the first fracture characteristic, and regarding a seismic attribute corresponding to the selected second fracture characteristic as an optimized seismic attribute of the work area. The method and the device disclosed by the embodiment of the invention can improve the accuracy of an optimization result.

Description

technical field [0001] The present application relates to the technical field of geophysical exploration, in particular to a seismic attribute optimization method and device. Background technique [0002] Fractures have been known as an important means for people to understand and discover oil and gas reservoirs. Reliable fracture prediction can not only effectively guide the deployment of horizontal wells, but also provide guidance for drilling engineering and optimize the design of subsequent fracturing operations. [0003] Seismic data carry a large amount of reservoir geological information. Therefore, fracture prediction is currently usually based on seismic data. The key to improving fracture prediction accuracy is to extract and optimize seismic attributes related to geological properties. The reason for optimal selection of seismic attributes rather than seismic data is that when the geological characteristics of the work area are determined, the seismic data will...

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Application Information

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IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 刘伟王熙明张宇生徐刚万小平张晨
Owner BC P INC CHINA NAT PETROLEUM CORP
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