| 四川盆地油气地质研究 |
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| 引用本文： | 童崇光.四川盆地油气地质研究[J].地球科学与环境学报,1990(3). |
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| 作者姓名： | 童崇光 |
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| 作者单位： | 成都地质学院石油系 |
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| 摘 要： | 四川盆地是地台内通过深断裂活动而形成的构造—沉积盆地。这些深断裂卷入了上地幔或壳内低速层。深部构造作用控制盖层内的断褶构造发育。川东南高陡背斜带的形成和隐伏的深断裂活动有成因联系。海相致密的碳酸盐岩内气藏的形成和分布,主要受断褶构造发育程度及储层内后生孔洞缝发育程度的控制。低缓的及隐伏的构造圈闭以及后生孔洞缝系统是天然气聚集的场所。川东南及川西区已知的气藏基本上是分布这类的圈闭中。龙门山前隐伏的古逆冲断褶带伴生的构造及裂缝圈闭是重要的油气聚带。近年来的钻探证实了这一预测的正确性。
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| 关 键 词： | 断陷盆地 深断裂 裂缝圈闭 古逆冲断褶带 |
NEW PROGRESS OF THE OIL-GAS GEOLOGY RESEARCH IN THE SICHUAN BASIN |
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| Tong Chongguang.NEW PROGRESS OF THE OIL-GAS GEOLOGY RESEARCH IN THE SICHUAN BASIN[J].Journal of Earth Sciences and Environment,1990(3). |
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| Authors: | Tong Chongguang |
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| Institution: | Chengdu College of Geology |
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| Abstract: | The Sichuan Basin is a sedimentary-structure basin that was formed by the activities of the deep faults within the platforms. These deep faults are involved in the upper mantle or in the low-velocity zones of the crust. The development of the fault-fold structures within the cap rocks is controlled by the deep tectonism. The formation of the high-dipping anticlined belts in the south-east of Sichuan was related in genesis to the activities of blind deep faults. The formation and the distribution of the gas pools in the denser marine carbonate reservoir rocks are mainly controlled by the developmental degree of the fault-fold structures and the secondary pores in the reservoir. The low-gentle concealed structure traps and the secondary pore system are the accumulating places of natural gas. The gas pools which have been known in the south-east and the west of Sichuan are basically distributed over these traps. The structural and fractural traps associated with the concealed paleo-reversed fold belts are the important oil-gas accumulation belts. The explorations in recent years have proved that this prevision is correct. |
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| Keywords: | Fault-depressed basin Deep faults Fissured traps Paleo-rever-sed fold belts |
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