干旱区生态环境知识资源中心(Arid): 沙漠区近地表和中深层一体化Q模型的建立及应用

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	沙漠区近地表和中深层一体化Q模型的建立及应用
其他题名	Establishment and Application of Integrated Near-Surface and Subsurface Q Model in Desert Area
	蒋立; 王晓涛; 谭佳; 肖艳玲; 陈勇; 张进
来源期刊	新疆石油地质
ISSN	1001-3873
出版年	2017
卷号	38 期号:1 页码:91-95
中文摘要	准噶尔盆地腹部均被沙漠覆盖,沙漠区地震勘探采集的地震反射波中高频能量大部分被表层沙丘吸收。为提高地震资料分辨率,提出了一种近地表和中深层叠前一体化Q模型建立方法:首先基于地震波振幅、主频和表层地震波传播时间等属性,经简化的谱比公式计算炮检点近地表相对Q场;然后通过近地表炮检点地层品质因子修正中深层平均Q模型,建立含近地表变化的叠前平均Q模型,对地震数据进行一步法叠前Q补偿。应用此模型处理的沙漠区地震资料分辨率,比应用常规中深层Q补偿方法和地表一致性反褶积方法高,合成记录标定结果和叠前反演结果也优于常规处理方法,具有良好的应用前景。
英文摘要	The hinterland of Junggar basin is covered by desert. The majority of middle-high frequency energy in seismic reflection waves is absorbed by near-surface sand dunes. To improve seismic data resolution, the paper proposes a method to build an integrated near-surface and subsurface, prestack Q model. Firstly, the method calculates the relative near-surface Q field at shot and receiver points with simplified spectral ratio based on amplitude and main frequency of seismic data and seismic travel time on the surface; then uses formation quality factors at near-surface shot-receiver points to modify average sub-surface Q model and establishes a pre-stack average Q model containing near-surface variations, which could further compensate seismic data of one-step pre-stack Q model. The seismic data resolution obtained from the model in the desert area is better than that obtained from conventional subsurface Q compensation method and deconvolution method. The results of synthetic seismogram calibration and pre-stack inversion are better than those of conventional methods as well. Therefore, the model has good prospects for application.
中文关键词	沙漠 ; 高频衰减 ; 分辨率 ; 地层品质因子 ; 近地表Q模型 ; 中深层Q模型 ; 一步法Q补偿
英文关键词	desert higt frequency attenuation resolution formation quality factor near-surface Q model sub-surface Q model one-step Q compensation
语种	中文
国家	中国
收录类别	CSCD
WOS类目	MINERALOGY
WOS研究方向	Mineralogy
CSCD记录号	CSCD:5903845
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/236862
作者单位	中国石油新疆油田分公司勘探开发研究院地球物理研究所, 乌鲁木齐, 新疆 830013, 中国
推荐引用方式 GB/T 7714	蒋立,王晓涛,谭佳,等. 沙漠区近地表和中深层一体化Q模型的建立及应用[J],2017,38(1):91-95.
APA	蒋立,王晓涛,谭佳,肖艳玲,陈勇,&张进.(2017).沙漠区近地表和中深层一体化Q模型的建立及应用.新疆石油地质,38(1),91-95.
MLA	蒋立,et al."沙漠区近地表和中深层一体化Q模型的建立及应用".新疆石油地质 38.1(2017):91-95.