| 白音都兰凹陷石油化探效果 |
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| 引用本文： | 李鹤庆.白音都兰凹陷石油化探效果[J].物探与化探,1990,14(3):219-224. |
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| 作者姓名： | 李鹤庆 |
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| 作者单位： | 地矿部石油海洋地质局培训化探中心 |
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| 摘 要： | 凹陷内的水文钻孔—ZK5井(井深211．67m),发现总厚达70余米的油层,属白垩系巴彦花样(K1b),以ZK5井为中心卫片上存在“色调异常晕圈”。地表土壤氯仿抽提物含量在卫片“色调异常晕圈”内外也有区别,大于50ppm的点基本上集中在卫片“色调异常晕圈”范围内。石油化探在凹陷内发现了四个异常,其中重烃和重烃/碳酸盐指标均形成环状异常(I号异常)位于卫片“色调异常晕圈”范围内,二者重合的较好,和钻探见油气层结果对应,说明白音都兰凹陷石油化探效果是好的。
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| 关 键 词： | 凹陷 石油 化探 |
THE EFFECTIVENESS OF GEOCHEMICAL PETROLEUMPROSPECTING IN BAIYIN DULAN DEPRESSION |
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| Institution: | Training Center of Geochemical Prospecting, Bureau of Marine GeologicalInvestigation, Ministry of Geology and Mineral Resources |
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| Abstract: | The ZK5 hydrologic borehole(211. 67 m thick) has revealed an oil bed whichis over 70 m in total thickness and belongs to Cretaceous Bayanhua Group(K1b) .With the ZK5 borehole as the center,the satellite image has a"halo withanomalous hue". Within and outside this halo, the chloroform extracts of soilshow difference in content, and the points with content>50ppm are mainlyconcentrated inside this halo. Geochemical petroleum prospecting has discove-red in the depression four anomalies, of which the No, Ianomaly lies insidethe"halo with anomalous hue". There exist 31 heavy hydrocarbon and heavyhydrocarbon/carbonate anomalous points, which make up 60% of the total ano-malous points (53) in the survey area. The data obtained prove the geoche-mical petroleum prospecting to be effective in Baiyin Dulan depression. |
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