叠前油气检测技术在渤海Y构造浅层的应用

doi:10.11720/wtyht.2020.1394

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Abstract

The Minghuazhen Formation of the Y structure in Bohai Bay Basin is well developed,but the drilled wells confirm that the oil-bearing characteristics of reservoirs have big differences in this area.The high reliability of reservoir fluid detection results are of great significance in improving the success rate of lithologic traps in the lower Minghuazhen Formation of the structure and activating the whole structure.In order to study the oil-gas bearing feature of the target area,the authors used a series of post-stack oil-gas detection methods based on amplitude and frequency,but still failed to identify the reservoir fluid effectively and reliably.By changing the research idea and using pre-stack hydrocarbon detection technology and method comparison,it is found that,when the incident angle is less than 30 degrees,the fluid factor directly extracted from pre-stack angle gathers is more sensitive to shallow oil and gas in this area,which corresponds well to the well logging interpretation results.The application of this sensitive parameter to the prediction of reservoir oil-gas bearing feature has achieved good results.It has certain reference significance for pre-stack reservoir fluid prediction in similar areas.

Key words： solid-fluid decoupling lithological trap pre-stack gathers gathers optimization fluid detection

Received: 14 August 2019 Published: 26 October 2020

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	Articles by authors
	Jing-Si ZHANG
	Li-En BIAN
	Jun WANG
	Teng LIU
	Ya YU

Cite this article:

Jing-Si ZHANG,Li-En BIAN,Jun WANG, et al. The application of pre-stack hydrocarbon detection to Y structure of Bohai Bay Basin[J]. Geophysical and Geochemical Exploration, 2020, 44(5): 1215-1220.

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https://www.wutanyuhuatan.com/EN/10.11720/wtyht.2020.1394 OR https://www.wutanyuhuatan.com/EN/Y2020/V44/I5/1215

Quality analysis of prestack gathers

The contrast of original gathers(a) and processed gathers(b)

AVO characteristics comparison between oil top(a) and water top(b)

The fluid factors of oil-bearing sandstone and water-bearing sandstone

The section of hydrocarbon detection results of well Y-3(a) and Y-4(b)

The section and slice of hydrocarbon detection results of reservoirs of well Y-7

The section and slice of hydrocarbon detection results of reservoirs of well Y-8

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