| 油气田微磁异常成因及性质研究的近期进展 |
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| 引用本文： | 朱起煌.油气田微磁异常成因及性质研究的近期进展[J].地质科技情报,1992,11(1):49-55. |
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| 作者姓名： | 朱起煌 |
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| 作者单位： | 地质矿产部华北石油地质局第三普查勘探大队 陕西咸阳712000 |
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| 摘 要： | 微磁测量是80年代出现的一种成功的非常规油气勘探方法,它所检测的是与油气渗漏相关的次生磁性矿化作用。近期的大量研究表明,油气田上方的微磁乒常具有复杂多样的成因:(1)从烃类获得代谢能的硫酸盐还原茵的作用;(2)烃类的微生物降解作用;(3)硫化环境中形成的磁黄铁矿;(4)泥质岩中富铁粘土的自生菱铁矿化;(5)与油气源岩露头或油气藏渗漏有关的自燃变质带。此外,烃类在陆相红层中的磁效应可以受到赤铁矿溶离的干扰,使其磁化强度出现数量级的下降。
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| 关 键 词： | 油田 气田 磁异常 成因 性能 |
RECENT ADVANCES IN STUDYING THE ORIGIN AND PROPERTY OF MICROMAGNETIC ANOMALIES IN OIL AND GAS FIELDS |
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| Zhu Qihuang Brigade for Petroleum Reconnaissance and Exploration,MGMR,.RECENT ADVANCES IN STUDYING THE ORIGIN AND PROPERTY OF MICROMAGNETIC ANOMALIES IN OIL AND GAS FIELDS[J].Geological Science and Technology Information,1992,11(1):49-55. |
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| Authors: | Zhu Qihuang Brigade for Petroleum Reconnaissance and Exploration MGMR |
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| Institution: | Zhu Qihuang Brigade for Petroleum Reconnaissance and Exploration,MGMR,712000) |
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| Abstract: | Micromagnetics is a successful unconventional method for oil and gas exploration which detects secondary magnetic mineralizations associated with hydrocarbon seepages. A lot of recent research suggests that micromagnetic anomalies above oil and gas pools may result from (1) sulfate reducing bacteria deriving metabolic energy from hydrocarbon; (2) biodegradation of hydrocarbon; (3) pyrrhotite in sulfidic environments; (4 ) sideritization of iron-rich clay minerals in argillaceous rocks; (5) spontaneous combustion-metamorpohsed zones associated with source crops and seepages of hydrocarbon. Moreover, magnetic effect of hydrocarbon in red beds can be disturbed by removal of dissolved hematite. |
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| Keywords: | secondary magnetic mineralizations mechanism of micromagnetic anomalies unconventional method for oil and gas exploration micromagnetics'hydrocarbon |
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