| 油气田上地气物质迁移机制研究 |
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| 引用本文： | 杨凤根,童纯菡,王鹤年,华仁民.油气田上地气物质迁移机制研究[J].地球化学,2000,29(5):442-446. |
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| 作者姓名： | 杨凤根 童纯菡 王鹤年 华仁民 |
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| 作者单位： | 1. 南京大学,地球科学系,成矿作用研究国家重点实验室、江苏,南京,210093
2. 成都理工学院三系,四川,成都,610059 |
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| 基金项目： | 国家自然科学基金!(49673202) |
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| 摘 要： | 将地气测量技术应用于油气田勘查及评价工作中，地气测量反映出４０００多ｍ的深部构造形成的弱异常，地气异常间接批示了该地区的含气性。地气物质迁移机理研究结果表明，采样器上沉积的物质是以纳米级微粒及其集合体形式存在的。这些纳米级微粒由于具有一系列物理和化学特性，使得它可以与地壳中上升气流的气体相吸咐，随着垂向迁移的气体而上升。不断产生的纳米级微粒被上升气流带到地表，从而在地表形成地气异常。
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| 关 键 词： | 地气物质 地气异常 上升异常 迁移机制 油气田 |
| 文章编号： | 0379-1726(2000)05-0442-05 |
| 修稿时间： | 2000-01-17 |
Mechanism of geogas substance transportation on oil and gas field |
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| YANG Feng-gen,TONG Chun-han,WANG He-nian,HUA Ren-min.Mechanism of geogas substance transportation on oil and gas field[J].Geochimica,2000,29(5):442-446. |
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| Authors: | YANG Feng-gen TONG Chun-han WANG He-nian HUA Ren-min |
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| Institution: | YANG Feng-gen ,WANG He-nian ,HUA
Ren-min
(Deparimenc of Earth Sclence, State Key Laboratory for Mineral Deposits Research, Nanjing
University, Nanjing 210093, China)
TONG Chun-han
(Department of Nuclear Techaique, Chengdu University of Technology, Ehengdu 610059, Chins) |
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| Abstract: | Geogas prospecting was applied to studying oil and gas field in this paper. It can reveal the weak anomaly that is formed by the structure with a depth of 4 000 m. The elements of weak anomaly are K, Na, La, Sm, Fe, Sc, Cr, Au, As, Sb, Zn and Co and they can be indirectly indicated on the area. The shape of geogas anomaly has something to do with the extension of concealed fault. In the lateral section, the anomalies of geogas elements appear above the ring structure. In the plane, the distribution of the anomalies is consistent with that of the ring structure. This shows the characteristics that geogas substance may be transported by ascend gas flow along the concealed fault. With the scanning electron microscopic technique, for instance, atom force microscopy (AFM) and transmission electron microscopy (TEM), the characteristics of particle absorbed in the collector, such as, granule size, feature, planar and dimensional distribution, microscopic composition, are observed. It has been turned out that the geogas substance deposited on the collectors is a type of several dozens of nanometer particles. The particles get to become catenulate, bigger and bigger, even nanometer line. Because the nanometer particle has a series of physical and chemical particular properties, it is absorbed and transported by ascending gas flow in the crust. When a large number of nanometer particles were transported up to the surface by ascending gas flows, the geogas anomaly was formed on the surface directly above the ring structure. |
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| Keywords: | geogas substance geogas anomaly ascending gas flow nanoscale particle migration mechanism oil and gas field |
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