%0 Journal Article %T 凌源–宁城盆地牛营子地区辽凌D1井高于庄组烃源岩地球化学特征
The Geochemical Characteristics of Source Rock of the Gaoyuzhuang Formation of Well LLD1 in Niuyingzi Area of Lingyuan-Ningcheng Basin %A 郑磊 %A 唐友军 %A 李永飞 %A 郜晓勇 %A 宗文明 %A 孙求实 %A 何大祥 %J Journal of Oil and Gas Technology %P 19-25 %@ 2471-7207 %D 2019 %I Hans Publishing %R 10.12677/JOGT.2019.411004 %X
辽西凌源–宁城盆地牛营子地区钻探的辽凌D1井,在中元古界高于庄组发现了油气显示。系统地分析了高于庄组烃源岩的地球化学特征,研究结果表明:烃源岩饱和烃中正构烷烃分布基本完整,呈明显的单峰态前峰型,具有C27规则甾烷优势,指示了有机质来源以低等水生生物贡献为主;较高的孕甾烷相对含量和C19~C29三环萜烷/C29~C35藿烷比值,以及较高的甾烷和升藿烷成熟度参数值,均表明烃源岩出于成熟阶段;而低的Pr/Ph和较高伽马蜡烷含量指示了偏还原的沉积环境。
Well LLD1 was drilled in Niuyingzi Area of Lingyuan-Ningcheng Basin in the west of Liaoning Province. Oil and gas indications were found in the Gaoyuzhuang Formation in the Mesoprotero-zoic. The geochemical characteristics of the source rocks were systematically analyzed in the study. The results indicate that the distribution of n-alkanes series in saturated hydrocarbons is substantially complete in all source rocks with an evident unimodal pattern. The distribution of C27~C29 regular steranes presents a dominance of C27 steranes, indicates a predominantly aquatic organisms input in the organic matter of relative source rocks. There exist high relative contents of pregnane and C19~C29 tricyclic terpane/C29~C35 hopane ratio, as well as maturity parameters related to steranes and hopanes; it also indicates that all source rocks are matured. Moreover, a lower (Pr/Ph) ratio and relatively high gammacerane concentration indicate an anoxic deposition environment of partial reduction.
%K 烃源岩,生物标志物,中元古界,牛营子地区,凌源–宁城盆地
Source Rock %K Biomarker %K Mesoproterozoic %K Niuyingzi Area %K Lingyuan-Ningcheng Basin %U http://www.hanspub.org/journal/PaperInformation.aspx?PaperID=29543