区域产层含流体重力分布规律与应用

区域产层是指在较大地质单元内，稳定分布的油气层，例如：柴达木盆地西部地区的N2^2-N2^1、E3^2、E3^1油气层，研究尕斯库勒、开特米里克、油泉子、南翼山，小梁山及尖顶山构造，区域产层的油、气、水分布规律，发现这些产层含流体性质，存在重力分布规律(图1)，例如，尕斯库勒E3^1主力油层，在埋藏较深的构造，如开特米里克、南翼山、小梁山为水层，而在埋藏较浅的构造，如尖顶山为气(显示)层．南翼山E3^2凝析气藏，在埋藏海拔相当或较高的尕斯库勒为油层，尖顶山及油泉子为气(显示)层；而埋藏海拔较深的构造，如开特米里克及小梁山为水层．此外，埋藏海拔较浅的油泉子及尖顶山N2^1顶部为油层，而埋藏较深的开特米里克及小梁山为水层．由此可见，在区域上，油、气、水层的分布与所在构造的海拔深度密切相关，这一规律称之为“区域产层含流体的重力分布规律.”应用这一规律，可以对不同埋深的构造，含油、气、水的前景进行预测。

Relationship Between Producer Services Developing Level and Urban Hierarchy——A Case Study of Zhujiang River Delta

As the Central Place Theory indicates, the centricity of a central city can influence the extension of its ser- vice. Since the service industry in the theory is mostly consumer services, it is worth studying the relationship between the producer services and the centricity of the city in the service society with producer services becoming a more im- portant part of the service industry. The paper takes the case of the Zhujiang (Pearl) River Delta (PRD), a developed region in China, to study the relationship between the developing level of producer services and the urban hierarchy. Based on the analysis about the spatial difference of the producer services in the nine cities of the PRD, and the divi- sion of the nine cities according to some economic indices, it is shown that there is a correlation between the develop- ing level of producer services and the urban hierarchy. Furthermore, two deductions about the future status of the pro- ducer services in the city and the location of the producer services in a large region can be made from this correlation between the developing level of producer services and the urban hierarchy.