摘要
在讨论复合型盖层特点的基础上，对其在我国大中型气田形成中的作用进行了分析。复合型盖层不仅具有较强的毛细管、超压和烃浓度封闭能力，而且具有区域分布的特点，是大中型气田形成的区域保护层。它不仅具有较强的封闭各类大中型气田的能力，同时，又为大中型气田的形成提供了各种相态的气源。因此，复合型盖层的存在为大、中型气田的形成创造了十分有利的条件。
The characteristics of complex caprocks is discussed and then its sealing
capability in large and mediumsized gasfields in China analyzed. Complex caprock has not
only strong capillary, overpressure and hydrocarbon concentration sealing capability, but
regional distribution, forming regional preservation for formation of large and mediumsized
gasfields. On the other hand, it can effectively seal the large and mediumsized gasfields, and
also provide gas source of different phase behaviors. Therefore, complex caprock establishes
favorable conditions for formation of large and mediumsized gasfields.
出处
《新疆石油地质》
CAS
CSCD
1999年第1期18-21,共4页
Xinjiang Petroleum Geology
关键词
盖层
油气田
封闭压力
毛细管
油气形成
Caprock
Large scale field Medium scale field Sealing capability Capillary Overpressure Phase
behavior ,
