徐东地区营城组一段火山喷发模式特征

从火山喷发的构造环境、火山喷发旋回特征出发，结合原始岩浆来源、火山岩岩性特征、火山喷发类型等，总结了徐深气田徐东地区营城组一段火山喷发模式，分析了其对储层的影响。结果表明，切穿基底的深大断裂在火山喷发中起着决定性的作用。目的层自下而上划分为3 个旋回，旋回I 对应YC1III，旋回II 对应YC1II1 和YC1II2，旋回III对应小层YC1I1 和YC1I2。火山喷发以裂隙–中心式喷发为主，中心式喷发为辅。火山喷发模式控制着不同类型火山岩相的发育特征。靠近火山口的爆发相的高部位、溢流相下部亚相、顶部亚相、上部亚相、火山通道相的火山颈亚相等是有利的开发区域。

The Construction of Public Security Service System --From the Perspective of Contract Governance

Social security has always been a major political and social issue. However, at the present, professional police who offer single and sole public security service cannot completely meet the needs of the public, which re- quires government to innovate public security service system, achieving ＂improvement without increasing police power＂ by way of diversified governance of security service. Contract governance in security service provides a fea- sible way to realize the diversified governance of security service and the improvement without increasing police power. Scattered resources existing in society can be integrated by means of contract governance, making them a joint force to achieve the diversified governance of security service.