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首頁(yè)» 過(guò)刊瀏覽» 2018» Vol. 3» Issue (1) 22-31???? DOI : 10.3969/j.issn.2096-1693.2018.01.003
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基于隨機(jī)森林方法的地震插值方法研究
徐凱,,孫贊東*
中國(guó)石油大學(xué)(北京)地質(zhì)與地球物理綜合研究中心,,北京 102249
Seismic interpolation based on a random forest method
XU Kai, SUN Zandong
Lab for the Integration of Geology and Geophysics, China University of Petroleum-Beijing, Beijing 102249, China

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摘要? 在地震數(shù)據(jù)的采集過(guò)程中,不可避免地會(huì)出現(xiàn)地震道缺失或者空間采樣不足的情況,,這樣會(huì)產(chǎn)生壞道,、缺失道等現(xiàn)象,,極大的影響了地震資料質(zhì)量,。想要解決該問(wèn)題就必須進(jìn)行地震插值,。本文借助于機(jī)器學(xué)習(xí)思想,以無(wú)缺失道數(shù)據(jù)為基礎(chǔ)構(gòu)建機(jī)器學(xué)習(xí)樣本集,,在此基礎(chǔ)上利用隨機(jī)森林回歸預(yù)測(cè)算法學(xué)習(xí)各道各時(shí)間點(diǎn)振幅與其臨近道,、時(shí)窗內(nèi)的振幅的統(tǒng)計(jì)關(guān)系,然后根據(jù)臨近道數(shù)據(jù)對(duì)缺失道進(jìn)行補(bǔ)全,。將本文所提出方法應(yīng)用到模型數(shù)據(jù)與實(shí)際采集數(shù)據(jù)中的缺失道補(bǔ)全處理,,均取得良好應(yīng)用效果,證明本文方法的正確性與有效性,。
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關(guān)鍵詞 : 疊前數(shù)據(jù)處理, 地震插值, 隨機(jī)森林, 機(jī)器學(xué)習(xí)
Abstract

  In the course of any seismic data acquisition, one inevitably encounters instances of empty seismic traces or insufficient spatial sampling, which results in bad sectors and can greatly affect seismic data quality. It is therefore often necessary to undertake seismic trace interpolation to solve this problem. In this paper, a machine learning based method is proposed and applied. This approach requires that the statistical relationship between the amplitude of each trace at each time point and the amplitude of the adjacent trace and time window be derived using a random forest regression prediction algorithm, then the empty trace can be populated according to the adjacent trace data. The method proposed in this paper has achieved good results in the derivation of empty trace values when applied to both model data and actual data, thus proving its validity and effectiveness.

Key words: prestack data processing seismic interpolation random forest machine learning
收稿日期: 2018-01-05 ????
PACS: ? ?
基金資助:國(guó)家“十三五”重大專(zhuān)項(xiàng)“陸相頁(yè)巖油甜點(diǎn)地球物理識(shí)別與預(yù)測(cè)方法”課題(2017ZX05049-002)資助
通訊作者: 孫贊東, [email protected]
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徐凱,,孫贊東. 基于隨機(jī)森林方法的地震插值方法研究[J]. 石油科學(xué)通報(bào), 2018, 3(1): 22-31. XU Kai, SUN Zandong. Seismic interpolation based on a random forest method. Petroleum Science Bulletin, 2018, 3(1): 22-31.
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