Attribute-based longitudinal wave data and converted wave data matching method and device

A technology of converted wave and data, applied in the field of attribute-based matching of longitudinal wave data and converted wave data, which can solve problems such as poor effect, large difference in dynamic characteristics, and low precision

Inactive Publication Date: 2016-12-14
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the large difference in dynamic characteristics (amplitude, frequency, phase, etc.) Low precision when matching, poor effect

Method used

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  • Attribute-based longitudinal wave data and converted wave data matching method and device
  • Attribute-based longitudinal wave data and converted wave data matching method and device
  • Attribute-based longitudinal wave data and converted wave data matching method and device

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Embodiment Construction

[0053]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.

[0054] The specific implementation manners of the embodiments of the present application will be further described in detail below in conjunction with the accompanying drawings.

[0055] Such as figure 1 Shown is a schematic diagram of the propagation path of the longitudinal wave and the converted wave. In the figure, O is the source poi...

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Abstract

The invention relates to the field of seismic data processing, and particularly relates to an attribute-based longitudinal wave data and converted wave data matching method and device. The method comprises the steps that a longitudinal wave channel set and a converted wave channel set of amplitude versus offset (AVO) of a target area are acquired; AVO inversion is performed on the longitudinal wave channel set so that the quasi transverse wave impedance attributes of longitudinal waves are acquired; superposition of the converted wave channel set is performed so that converted wave post-superposition data are acquired; the speed ratio meeting the preset conditions is acquired according to the quasi transverse wave impedance attributes and the converted wave post-superposition correlation; and the converted wave post-superposition data are transformed to a longitudinal wave time domain from a converted wave time domain according to the speed ratio so that the matched converted wave data are acquired. The quasi transverse wave impedance attributes and the converted wave data have higher correlation so that the precision of longitudinal wave and converted wave time matching can be enhanced, and the accurate basis can be provided to multi-wave seismic data joint inversion and interpretation.

Description

technical field [0001] The invention relates to the field of seismic data processing, in particular to a method and device for matching longitudinal wave data and converted wave data based on attributes. Background technique [0002] In multi-component seismic exploration, the reflected longitudinal wave (PP wave) is composed of downgoing P wave and upgoing P wave, and the reflected converted wave (PS wave) is composed of downgoing P wave and upgoing S wave. Due to the different propagation mechanisms of longitudinal waves (P waves) and transverse waves (S waves), there are differences in travel time and waveform between the received longitudinal wave data and converted wave data. The main manifestations are: for the same reflection interface, the longitudinal wave (PP wave) and converted wave (PS wave) have differences in reflection time, and the number of events on the respective seismic reflection profiles is different; compared with longitudinal wave (PP wave), the energ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/28
CPCG01V1/28
Inventor 张铁强孙鹏远钱忠平
Owner BC P INC CHINA NAT PETROLEUM CORP
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