| 西昌盆地油气保存条件研究 |
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| 引用本文： | 刘树根,李国蓉,郑荣才. 西昌盆地油气保存条件研究[J]. 成都理工大学学报(自然科学版), 2004, 31(6): 575-581 |
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| 作者姓名： | 刘树根 李国蓉 郑荣才 |
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| 作者单位： | 成都理工大学"油气藏地质及开发工程"国家重点实验室,成都,610059;成都理工大学"油气藏地质及开发工程"国家重点实验室,成都,610059;成都理工大学"油气藏地质及开发工程"国家重点实验室,成都,610059 |
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| 基金项目： | 国家重点基础研究发展计划(973计划) |
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| 摘 要： | 西昌盆地可能的盖层有志留系龙马溪组黑色泥页岩; 志留系韩家店组下部紫红色间夹灰绿色泥岩; 志留系回星梢组中下部紫红色泥岩和三叠系白果湾组底部炭质泥页岩.印支期, 七坝1井具有较好的封闭性; 喜马拉雅期, 七坝1井为开启性, 不具封闭性.七坝1井未获工业性气流的主要原因是油气保存条件差,断裂通天和泥岩裂缝发育及地表大气水向下渗透深度大是造成七坝1井油气保存条件欠佳的主要原因.相对而言, 西昌盆地西部地区的保存条件较东部地区好.
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| 关 键 词： | 西昌盆地 保存条件 大气水深循环 |
| 文章编号： | 1671-9727(2004)06-0575-07 |
| 修稿时间： | 2004-07-08 |
Study on petroleum maintenance condition in Xichang basin, China |
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| LIU Shu-gen,LI Guo-rong,ZHENG Rong-cai. Study on petroleum maintenance condition in Xichang basin, China[J]. Journal of Chengdu University of Technology: Sci & Technol Ed, 2004, 31(6): 575-581 |
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| Authors: | LIU Shu-gen LI Guo-rong ZHENG Rong-cai |
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| Abstract: | The possible caprocks in Xichang basin are Silurian Longmaxi Formation black shale, Silurian Hanjiadian Formation purple and red mudstone, Silurian Huixingshao Formation purple and red mudstone and Triassic Baiguowan Formation carbonaceous muddy shale.The sealing condition in Well Qiba 1 was good during Indo-Chinese epoch. However, Well Qiba 1 was not sealed during Himalayan Movement period. The bad petroleum maintenance condition is the main cause which there is no commercial petroleum in Well Qiba 1.Faults to the surface, fractures in mudstone and deep cycle of meteoritic water makes the petroleum maintenance condition bad in Well Qiba 1.The petroleum maintenance condition in the western part is relatively better than that in the eastern part in Xichang basin. |
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| Keywords: | Xichang basin petroleum maintenance condition deep cycle of meteoritic water |
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