南华北上古生界烃源岩有机地球化学特征

王荣新; 赵刚; 邓世英

doi:10.11781/sysydz200805484

南华北上古生界烃源岩有机地球化学特征

doi: 10.11781/sysydz200805484

中国石油化工股份有限公司, 河南油田分公司, 石油勘探开发研究院, 河南, 南阳, 473132

详细信息

作者简介:
王荣新(1963- ),男,硕士,高级地质师,从事石油地球化学及地质勘探工作.E-mail:hnytwrx@126.com.

中图分类号: TE122.113
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- 被引次数: 0
出版历程
- 收稿日期: 2008-01-10
- 修回日期: 2008-08-19
- 刊出日期: 2008-09-28

GEOCHEMICAL CHARACTERISTICS OF THE UPPER PALEOZOIC SOURCE ROCKS IN THE SOUTHERN NORTH CHINA

Pertoleum Exploration and Development Research Institute of Henan Oilfield Branch Company, SINOPEC, Nanyang, Henan 473132, China

摘要

摘要: 南华北地区晚古生代沉积了一套台地相-海陆过渡相-内陆湖相地层,上古生界烃源岩主要为一套连续沉积的含煤岩系。利用有机地化分析测试资料,结合上古生界沉积背景与沉积相,从纵向和平面上研究了该区上古生界煤系烃源岩的有机质丰度、类型及热演化等地球化学特征,确定太原组、山西组煤系泥岩、煤岩为上古生界含油气系统的主力烃源岩。探讨了上古生界烃源岩的二次生烃条件及主控因素,认为二次生烃时烃源岩生烃潜量越大越好,初始成熟度越低越好,地温梯度越高越好;其主控因素为生烃潜量和温度。最后指出二次生烃范围主要分布于谭庄—沈丘、倪丘集、鹿邑和襄城等凹陷。
- 二次生烃 /
- 有机地球化学 /
- 烃源岩 /
- 上古生界 /
- 南华北地区
Abstract: In the Southern North China region,a series of the Late Paleozoic formation with platform facies,transitional facies and inland lake facies had been deposited.The Upper Paleozoic source rocks mostly represent a set of successive coal-bearing squence.Combined with study of the Upper Paleozoic sedimentary settings and sedimentary facies,by using analyzed and tested geochemical data,the geochemical characteristics of organic matter abundance,type and thermal evolution of source rocks in coal-bearing strata was studied.The results confirmed that the main Upper Paleozoic source rocks were contained in the coal measure mudstone and coal-bearing rock in Taiyuan Formation and Shanxi Formation.Besides that,the condition of secondary oil generation and main controlling factors(the potentiality and temperatures) of the Upper Paleozoic source rocks was considered and it was proved that the better source rocks showed greater potential,lower initial maturity and higher geothermal gradient.In the end,it was pointed out that the secondary oil generating areas were mainly in Depressions of Tanzhuang-Shenqiu,Niqiuji,Luyi,Xiangcheng.
- secondary hydrocarbon generation /
- geochemistry /
- source rocks /
- Upper Paleozoic /
- the Southern North China

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