基于流体替代的敏感弹性参数优选及流体识别在渤海B油田的应用

doi:10.11720/wtyht.2018.1382

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Abstract

Pre-stack simultaneous inversion is one of the main techniques for reservoir fluid identification,but there are still some uncertainties due to the complexity of underground geology and the multiple ambiguities of geophysical response characteristics.In this paper,on the basis of the fluid substitution,firstly the seismic amplitude response characteristics are analyzed,secondly the sensitive parameter suitable for this area is quantitatively screened through fluid evaluation factors,and finally the fluid indicator profile is obtained by pre-stack simultaneous inversion.The study shows that the high porosity water layer is the key interference factor for fluid identification in this area,and λ/μ parameter is the most suitable fluid identification factor.The practical application shows that the strong amplitude is suppressed effectively at the water layer by the method and the accuracy of fluid identification is improved obviously.

Key words： pre-stack simultaneous inversion fluid identification fluid substitution fluid evaluation factor

Received: 19 December 2017 Published: 03 August 2018

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	Ying LI
	De-Hai QIN

Cite this article:

Ying LI,De-Hai QIN. The optimization of sensitive elastic parameters based on fluid substitution and the application of fluid identification to Bohai B Oilfield[J]. Geophysical and Geochemical Exploration, 2018, 42(4): 662-667.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2018.1382 OR https://www.wutanyuhuatan.com/EN/Y2018/V42/I4/662

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