第四纪沉积物磁性勘查油气法的原理及应用

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摘要

本文介绍了利用第四纪沉积物磁性调查油气的原理,地下油气藏会在近地表第四纪沉积物中产生磁性矿物并形成多种磁性参量异常。检验了形成磁性异常的磁性矿物的种类;发现了油田地区土壤中存在着趋磁细菌。在5个油田地区近450km²范围应用该方法调查油气分布的研究结果表明,各种磁性异常(κ、Mn、Mr、Ir、Iκ)呈综合异常的形式,它们的形成及分布特征受油气活动、通道及环境条件的控制。实际资料证实,磁性综合异常能反映油田地区油气活动的分布状态。该方法作为综合勘查方法之一,应进一步推广。

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关键词 ：莫索湾地区, 三维地震, KLinversion油气检测技术

Abstract：

This paper elucidates the principle of applying magnetism of Quaternary sediments to the oil and gas investigation: underground oil and gas accumulations would produce magnetic minerals and form various magnetic parameter anomalies in near-surface Quaternary sediments. Types of magnetic minerals forming magnetic anomalies were identified, and it has been found out that there exist magnetotaxis bacteria in soils of oil fields. The application of this method to the investigation of oil and gas distribution in areas of nearly 450 km² within five oil field shows that various magnetic anomalies (κ、M n、M r、I r and I κ) assume forms of composite anomalies, with their formation and distribution characteristics controlled by oil and gas activities, channelways and environmental conditions. Data available demonstrate that magnetic composite anomalies can reflect distribution of oil and gas activities in oil fields and that, as one of the integrated prospecting methods, the method should be further spread.

Key words： Mosuo-Wan field three-dimensional seismic data KLinversion hydrocarbon detection

收稿日期: 1996-04-23 出版日期: 1997-08-24

基金资助:

国家自然科学基金(No.49374216)部分资助

作者简介: 阎桂林,男,出生于1940年11月,河北博野县人。原北京地质学院地球物理勘探系毕业。现为中国地质大学(武汉)应用地球物理系副教授,主要从事磁力勘探、古地磁学、岩石磁学等方面的教学与研究。现任中国地质学会古地磁专业委员会委员及美国纽约科学院成员。曾在国内外刊物上发表论文70余篇。

引用本文:

阎桂林. 第四纪沉积物磁性勘查油气法的原理及应用[J]. 物探与化探, 1997, 21(4): 254-262.
Yan Guilin . THE PRINCIPLE AND APPLICATION OF MAGNETIC OIL AND GAS EXPLORATION IN QUATERNARY SEDIMENTS. Geophysical and Geochemical Exploration, 1997, 21(4): 254-262.

链接本文:

https://www.wutanyuhuatan.com/CN/ 或 https://www.wutanyuhuatan.com/CN/Y1997/V21/I4/254

［1］阎桂林等, 河南双河油田第四纪沉积物(土壤)中趋磁细菌的发现, 地球科学(中国地质大学学报), No.2, 1995。
［2］阎桂林、王适新, 第四纪沉积物磁性调查法在油田上的应用, 地质科技情报, No.4, 1993。
［3］郭友钊等, 土壤磁性在石油天然气早期勘探中的应用, 石油物探, 1995。
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［8］ McCabe C., et al., Occurrence of secondary magnetite within biodegrade oil, Geology, 15:7～10, 1987.
［9］ M echel H.G., Burton E.A., Chemical and microbial processes causing anomalous magnetization in environments affected by hydrocarbon seepage, Geophysical 56:598～605, 1991.
［10］ Sassen R., et al., Deposition of magnetic pyrrhotite during alteration of crude oil and reduction of suface, Organic geochemist ry, 14:381～392, 1988.
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