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A seismic data processing method and device

A technology for seismic data and processing methods, which is applied in seismic signal processing, seismology, measurement devices, etc., and can solve problems such as restricting the application of seismic data

Active Publication Date: 2020-06-19
CHINA NAT OFFSHORE OIL CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

There are obvious seismic differences (such as azimuth acquisition footprints, azimuthal AVO differences (AVAZ, Azimuthal AVO) etc.) of seismic data of two phases acquired with different azimuth angles. Therefore, there are few cases where it is applied to reservoir monitoring , thus restricting the application of non-repetitive dual-azimuth acquisition seismic data in reservoir dynamic monitoring

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  • A seismic data processing method and device
  • A seismic data processing method and device
  • A seismic data processing method and device

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Embodiment Construction

[0061] Embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings. It should be noted that, in the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined arbitrarily with each other.

[0062] The steps shown in the flowcharts of the figures may be performed in a computer system, such as a set of computer-executable instructions. Also, although a logical order is shown in the flowcharts, in some cases the steps shown or described may be performed in an order different from that shown or described herein.

[0063] Related technologies for non-repetitive time-lapse seismic processing include bin resetting, post-stack mutual averaging processing, and mutual equalization filtering, etc., which can be used for matching processing of non-repetitive dual-azimuth acquisition seismicity, but cannot effectively weaken the acquisition Non-reservoir development-related seis...

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Abstract

The embodiment of the invention discloses an earthquake data processing method and device. The earthquake data processing method comprises the steps that when collecting azimuth angles of a first earthquake data body and a second earthquake data body after earthquake mutual balancing treatment are different, the first earthquake data body after the earthquake mutual balancing treatment is subjected to double-azimuth footprint collecting reduction treatment, and the second earthquake data body after the earthquake mutual balancing treatment is subjected to the double-azimuth footprint collecting reduction treatment; after the double-azimuth footprint collecting reduction treatment, the first earthquake data body and the second earthquake data body are subjected to AVO mutual balancing treatment before folding, wherein the double-azimuth amplitude changes with the offset distance. The method and device reduce and even remove existing earthquake differences influenced by the collecting azimuth angles, and therefore non-repetitive double-azimuth earthquake collecting data is applied to dynamic monitoring of oil deposits.

Description

technical field [0001] Embodiments of the present invention relate to but are not limited to seismic processing technology, especially a seismic data processing method and device. Background technique [0002] Time-lapse seismic is an effective method for dynamic monitoring of reservoirs. In the early 1980s, it was emphasized that the geometric positions of the geophones collected in different periods of seismic data should be absolutely repeated. In the 1990s, people began to treat repeated three-dimensional data as time-shifted data ( 2003 Huang Xuri). Restricted by the cost of acquisition and the status quo of oilfield acquisition, domestic and foreign scholars (such as Ling Yun in 2007, Guo Nianmin in 2012, Yin Cheng in 2014, Wang Yanjun in 2016, etc.) have done a lot of research work on non-repetitive time-lapse seismic reservoir monitoring, and demonstrated the application of this technology. In order to solve the feasibility, a mutual equalization processing method s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01V1/32
CPCG01V1/325
Inventor 史文英李熙盛梁卫支玲方中于但志伟夏晓燕崔连云严浩雁
Owner CHINA NAT OFFSHORE OIL CORP