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| 鄂尔多斯深盆气 | |
| 引用本文： | 孙粉锦,许化政,陈孟晋.鄂尔多斯深盆气[J].现代地质,2001,15(3):309-314. |
| 作者姓名： | 孙粉锦 许化政 陈孟晋 |
| 作者单位： | 1. 中国地质大学能源系 2. 中原油田地质研究院 3. 西北大学地质系 |
| 摘 要： | 鄂尔多斯盆地内石炭纪—二叠纪煤系含有机质丰富 ,演化程度高 ,不但形成了巨量的天然气 ,而且因储层致密、升降稳定、构造稀少而形成了盆地构造下倾部位天然气的大规模聚集 ,构造上倾部位则大面积含水 ,具有典型“深盆气”的特征。深盆气的主要含气层位为盒 8—本溪组各段 ,而盆地东部和北部可延至盒 5段。煤层是深盆气圈闭中的潜在储集层 ,起着“调节气库”的作用。多期砂体的叠置使深盆气的面积变得巨大 ,钻探成功率高 ,但因储集层的岩性致密 ,使自然产能低。 |
| 关 键 词： | 深盆气 水封圈闭 致密砂岩 生气中心 生气强度 煤系 |
| 文章编号： | 1000-8527(2001)03-0309-06 |
| 修稿时间： | 2001年2月26日 |
DEEP BASIN GAS OF ORDOS |
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| SUN Fen-jin ,XU Hua-zheng ,CHEN Meng-jin.DEEP BASIN GAS OF ORDOS[J].Geoscience——Journal of Graduate School,China University of Geosciences,2001,15(3):309-314. | |
| Authors: | SUN Fen-jin XU Hua-zheng CHEN Meng-jin |
| Institution: | SUN Fen-jin 1,XU Hua-zheng 2,CHEN Meng-jin 3 |
| Abstract: | There are abundant organic matters with high maturity in coal measures of Carboniferous-Permian system of the Ordos Basin, which has formed a huge amount of natural gas. Due to the tight lithology of the reservoir, less movement from up and down and less structures, a great deal of natural gas has accumulated in downdip of the structure while the sands in updip of the structure is saturate with water, which is the typical character of "deep basin gas reservoir". All sections from He 8 to Benxi are main gas reservoirs, and the main gas reservoirs can be extended to He 5 in the east and the west of the basin. Coalbed is a potential reservoir for the trap of deep basin gas reservoir, which has the function of adjustable gas reservoir. Because of several circles of overlaps of sands, the area of deep basin gas reservoir is enormous and the possibility of success in drilling is high. However, the nature productivity is low due to the tight lithology of the reservoir. |
| Keywords: | deep basin gas water seal trap tight sand center of generation gas intensity of generation gas coal series |
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