| 松辽盆地东南部物性盖层特征 |
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| 引用本文： | 陈强路.松辽盆地东南部物性盖层特征[J].石油实验地质,2000,22(2):175-179. |
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| 作者姓名： | 陈强路 |
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| 作者单位： | 中国石化新星公司实验地质研究院, 江苏无锡 214151 |
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| 基金项目： | 中国新星石油公司科技项目!96-14 |
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| 摘 要： | 松辽盆地东南部盖层以泥质岩为主,下白垩统青山口组及其上部湖相泥岩为本区北部良好的地区性盖层。泉三、二段(K1q2、K1q3)上部泥岩段既是本区的地区性盖层,又是其下伏气层的临界盖层。盖层突破压力大于气藏剩余压力和储层岩石排替压力,封气高度大于气藏高度,可以形成有效封闭。盖层封闭机理与微孔结构的关系表明,盖层类型以微裂缝与微孔混合型为主。
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| 关 键 词： | 盖层类型 封闭有效性 物性盖层 |
| 收稿时间： | 1999-03-10 |
PHYSICAL PROPERTY CHARACTERISTICS OF CAP ROCKS IN THE SOUTHEASTERN PART OF THE SONGLIAO BASIN |
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| CHEN Qiang-lu.PHYSICAL PROPERTY CHARACTERISTICS OF CAP ROCKS IN THE SOUTHEASTERN PART OF THE SONGLIAO BASIN[J].Petroleum Geology & Experiment,2000,22(2):175-179. |
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| Authors: | CHEN Qiang-lu |
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| Affiliation: | Research Institute of Experimental Geology, CNSPC, Wuxi, Jiangsu 214151, China |
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| Abstract: | The cap rocks in the southeastern part of the Songliao Basin are dominated by argillite.The Lower Cretaceous Qingshankou Formation and its upper lacustrine-facies mudstone are good regional cap rocks in the northem part of the area. The upper mudstine of the Quansan(K1g3) and Quaner(K1g2) Members is not only the regional cover of the area, but also the critical cover of its underlying gas reservirs. The breakthrouh pressure of the cover is greaer than the residual pressure of gas nds and the disPacement pressure of arervoir rocks, and the gas-sealing height is greater than the height of gas pools. So, effective sealing is formed, The relationship between the sealing mechanism of cap rocks and the texture of micropores shows that the styles of the cap rocks are dominated by the compound style of microfissures and micropores. |
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| Keywords: | styles of cap rocks effectiveness of sealing physical cap rocks |
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