石油物探2018，Vol.57Issue(3)：428-435,8.DOI:10.3969/j.issn.1000-1441.2018.03.012
基于F-X预测滤波的基追踪算法在雀莫错地区低信噪比资料处理中的应用
Application of F-X prediction filtering-based basis pursuit method on seismic data with low SNR of Quemocuo area in the Qiangtang Basin in Tibetan Plateau
摘要
Abstract
The Quemocuo area is located in the east of the North Qiangtang depression zone in the Qiangtang basin in Tibet.Comprehensive analysis shows that the basic formation conditions of natural gas hydrate occur in this area.However,because of regional stratigraphic and tectonic factors,the signal-to-noise ratio of the obtained seismic data is low,and there may be a lack of lateral coherence for the retrieved reflectivity profile,thus affecting the identification of a reservoir-forming system for natural gas hydrate.To obtain the desired results with enhanced lateral continuity,F-X prediction filtering was incorporated into the basis pursuit algorithm and applied to seismic data processing.Tests on synthetic and field data in the Quemocuo area showed more continuous reflectivity profiles,thus verifying the validity and feasibility of the proposed method.The proposed method provides technical support for clarifying the key factors of gas hydrate reservoir forming,detecting the relevant geophysical indicators,and delineating favorable areas.关键词
西藏羌塘盆地/雀莫错地区/天然气水合物/基追踪算法/F-X预测滤波Key words
Qiangtang Basin in Tibetan Plateau/Quemocuo area/natural gas hydrate/basis pursuit algorithm/F-X prediction filtering分类
天文与地球科学引用本文复制引用
王若,张帅,刘晓,祝有海,李志伟..基于F-X预测滤波的基追踪算法在雀莫错地区低信噪比资料处理中的应用[J].石油物探,2018,57(3):428-435,8.基金项目
中国地质调查局项目“青南藏北冻土区天然气水合物调查”(DD20160222)资助.This research is financially supported by the Project of China Geological Survey (Grant No.DD20160222). （DD20160222）
