四棵树凹陷新近系低熟油的形成条件试验分析  

Experimental Analysis on the Formation Condition of Neogene Immature Oil in Sikeshu Depression

作　　者：郭春清[1] 尚长志[2] 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室 [2]胜利油田有限公司滨南采油厂,山东滨州256600

出　　处：《石油天然气学报》2007年第2期24-27,147,共4页Journal of Oil and Gas Technology

基　　金：中国石油化工集团公司西部新区重点科技攻关项目(XBKY03-13)

摘　　要：准噶尔盆地四棵树凹陷新近系暗色泥岩镜质体反射率Ro为0.4%,是一套潜在的低熟烃源岩。该套泥岩不但具备有机质丰度高、类型好、单层厚度大等生成低熟油必备的物质条件以及有利于有机质保存和向烃类早期转化的沉积环境条件,而且其热演化程度正处于生成低熟油的高峰阶段。另外,从生烃机制上也能较好地解释该套烃源岩易于生成低熟油。这一发现有望为该区以后的勘探提供新的思路。The dark mudstone of Neogene System in Sikeshu Sag of Junggar Basin is a potential source rock with vitrinite reflectance(Ro)of 0.4%.It has the essential source conditions for the formation of immature oil with higher abundance and better types of organic matter deposited in thicker stratum under the environment in favor of preservation of organic matter and its inversion to hydrocarbons at the early stage,as well as the appropriate maturity for abundant production of immature oil.Furthermore,its ability to produce immature oil can be better interpreted by the mechanism of hydrocarbon generation.The discovery may provide an idea for future prospecting.

关 键 词：四棵树凹陷 新近系 烃源岩 低熟油 生成条件 

分 类 号：P618.13[天文地球—矿床学]