摘要
通过对柴达木盆地红沟子构造沟7井所钻遇地层的有机地化数据的分析,以及对该井区有机质丰度、有机质类型和有机质成熟度等指标的研究与评价,认为沟7井区烃源岩纵向上主要分布于新近系下油砂山组及上干柴沟组和古近系下干柴沟组上段,其中下干柴沟组上段烃源岩有机质丰度较高。整体上有机质类型为Ⅱ1型和Ⅱ2型,有机质成熟门限为2400m。沟7井区烃源岩生烃潜力较大,下干柴沟组上段、上干柴沟组和下油砂山组均为成熟烃源岩,生烃条件较好。
Organic geochemistry data of the drilled strata in Gou7 well of Honggouzi structure in Qaidam Basin was analyzed. The indexes of abundance, type and maturity of the organic matter in this well block were researched and evaluated. The result shows that the source rocks of Gou7 well block mainly located in the lower Youshashan Formation and upper Ganchaigou Formation in Neo-gene, and upper Ganchaigou Formation in Early Tertiary, of those, the source rocks in upper member of lower Ganchaigou Formation have high abundance of organic matter. Generally, the organic matter in this well block is humic-sapropelic kerogen, and the maturity threshold of organic matter is 2 400m, and the organic matter in more deep formation has been at the maturation evolutionary phase. Therefore, the source rocks in Gou7 well block has great potentiality of hydrocarbon generation, and the organic materials in lower Youshashan Formation, upper Ganchaigou Formation and upper of lower Ganchaigou Formation are mature and apt to generate hydrocarbon.
出处
《油气地质与采收率》
CAS
CSCD
北大核心
2008年第2期61-63,66,共4页
Petroleum Geology and Recovery Efficiency
关键词
烃源岩
评价
有机质丰度
有机质类型
有机质成熟度
红沟子构造
柴达木盆地
source rock,abundance of organic matter,type of or-ganic matter, maturity of organic matter, Honggouzi structure, Qaidam Basin
