奈曼凹陷奈1井九佛堂组烃源岩特征与勘探潜力  

Exploration Potential and Characteristics of Source Rocks of Jiufotang Well Nai1 in Naiman Sag

作　　者：刘海艳[1] 李德华[1] 王一鸣[1] 钱丽欣[1] 王智勇[1] LIU Hai-yan;LI De-hua;WANG Yi-ming;QIAN Li-xin;WANG Zhi-yong(Research Institute of Exploration and Development, Liaohe Oilfield of CNPC,Panjin 124010, Liaoning, China)

机构地区：[1]中国石油辽河油田分公司勘探开发研究院,辽宁盘锦124010

出　　处：《承德石油高等专科学校学报》2022年第3期1-5,共5页Journal of Chengde Petroleum College

基　　金：中国石油重大科技专项(辽河探区可持续规模增储勘探关键技术研究):2017E-1601。

摘　　要：为了明确奈曼凹陷奈1井九佛堂组烃源岩的基本特征,对其有机质丰度、有机质类型和演化程度进行详细分析。通过对其地球化学特征进行分析,认为奈1井九佛堂组烃源岩发育。有机质类型九下段以Ⅰ型和Ⅱ_(1)型为主;九上段多为Ⅱ_(2)型。根据演化程度分析,奈1井在1000 m左右泥岩的Ro值为0.5%左右,进入低成熟演化阶段,到了1480 m,泥岩Ro值基本大于0.7%,说明九佛堂组烃源岩已经完全进入了成熟演化阶段。综合分析认为,奈曼凹陷奈1井九下段为好烃源岩,九上段为一般-较好烃源岩,为奈曼凹陷北部提供了充足的油源,下一步可以向奈1块及其北部进行勘探,寻找有利勘探区带。In order to make clear about the basic characteristics of source rocks in Jiufotang Well Nai1 in Naiman sag,which is a Mesozoic sag developed on the fold basement of Hercynian period,a detailed analysis of the organic matter is studied.Through the analysis of geochemical characteristics of the source rocks,it is considered that the main types of organic matter are mainly typeⅠand typeⅡ.The organic matter type is mostly typeⅡ.According to the analysis of evolution,the Ro value of the mudstone at the depth of 1000 m in well Nai1 is about 0.5%,which enters the low mature stage.The Ro value of the mudstone is basically more than 0.7%at the depth of 1480 m,indicating that the source rocks of Jiufotang formation has entered the mature evolution stage completely.The comprehensive analysis shows that the source rocks in the lower Jiufotang formation is good,and the source rocks in the upper Jiufotang formation is from ordinary to good.It provides sufficient oil source for the north of Naiman sag,and the north part of Nai1 block can be explored to find favorable exploration zones.

关 键 词：烃源岩特征 有机碳含量 泥岩厚度 奈1井 奈曼凹陷 

分 类 号：P618.13[天文地球—矿床学]