摘要
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。
According to the structural environment and cycle characteristic of the volcanic eruption, original magma, volcanic rock feature, and the types of the volcanic eruption, the mode characteristics of volcanic eruption of volcanic gas reservoir of the Member I of Yingcheng Formation in Xudong Area in Xushen Gas Field are studied. The results indicate that the aimed stratum in study areas was formed under an intraplate setting and the fractures cut-through the base plays a definitive role. The study stratum fall into three gyrations of Ⅰ and Ⅱ and Ⅲ from bottom to top. Gyre Ⅰ correspond to YC1Ⅲ and Gyre Ⅱ corresponds YC1Ⅱ^1 and YC1Ⅱ^2 and Gyre III corresponds YC1Ⅰ^1 and YC1Ⅰ^2. The stratum in study areas mainly developed fissure-center eruption, the center eruption taking the secondary place. The conditions of oil source rock and accumulation and rock cap are excellent, The volcanic eruption mode controlls development characteristics of different types of volcanic lithofacies. The favorable areas mainly develop in the high-order bit of eruption facies near the volcanic crater and lower part and upper part and top part sub-facies of overflow facies and volcanic neck sub-facies of volcanic channels facies.
出处
《西南石油大学学报（自然科学版）》
CAS
CSCD
北大核心
2012年第1期41-48,共8页
Journal of Southwest Petroleum University(Science & Technology Edition)
基金
中国博士后科学基金面上基金(20100480344)
中国石油勘探开发研究院中青年创新基金(2009-B-10-03)
关键词
徐东地区
营城组一段
火山岩储层
火山岩相
火山喷发模式
Xudong Area
the Member 1 of Yingcheng Formation
volcanic reservoir
volcanic lithofacies
mode of volcaniceruption
