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世界地质 2017, 36(4) 1161-1169 DOI: ISSN: 1004-5589 CN: 22-1111/P

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	本文关键词相关文章
	生烃潜力
	烃源岩
	下马岭组
	凌源—宁城盆地
	本文作者相关文章
	宗文明
	郜晓勇
	孙求实
	蒋兴超
	吴桐
	PubMed
	Article by Zong W
	Article by Gao X
	Article by Sun Q
	Article by Jiang X
	Article by Wu T

华北北部凌源—宁城盆地中元古界下马岭组生烃潜力分析:以小庄户剖面为例

宗文明，郜晓勇，孙求实，蒋兴超，吴桐

1. 中国地质调查局沈阳地质调查中心 (沈阳地质矿产研究所)，沈阳 110034; 2. 长江大学油气资源与勘探技术教育部重点实验室，武汉 430100

摘要：通过岩石热解、饱和烃色谱--质谱、镜质体反射率等分析测试方法，对凌源—宁城盆地小庄户剖面中元古界下马岭组烃源岩的有机质丰度、类型及成熟度进行详细分析，综合评价其生烃潜力。研究结果表明，下马岭组有机碳的含量分布在 0. 15% ～ 1. 68%，平均值为 0. 67%。应用 Pr/n － C 17 与 Ph/n － C 18 的相关关系及干酪根碳同位素分析，判断其有机质类型为Ⅰ型和Ⅱ 1 型。镜质体反射率Ｒo 主要分布于 1. 26% ～2. 24%，平均为 1. 87%，指示下马岭组部分烃源岩属于高成熟演化阶段。综合评价认为，凌源—宁城盆地中元古界下马岭组烃源岩生烃物质基础较好、有机质类型好、成熟度高，可能发生过较大规模的生排烃作用。

关键词：生烃潜力烃源岩下马岭组凌源—宁城盆地

Evaluation of hydrocarbon generation potential in Middle Proterozoic Xiamaling Formation of Lingyuan--ningcheng Basin in northern China: a case study of Xiaozhuanghu geological section

ZONG Wen-ming，GAO Xiao-yong，SUN Qiu-shi，JIANG Xing-chao，WU Tong

1. Shenyang Institute of Geology and Ｒesources，CGS，Shenyang 110034，China; 2. Key Laboratory of Exploration Technologies for Oil and Gas Ｒesources Yangtze University，Wuhan 430100，China

Abstract: By means of rock pyrolysis，chromatography and mass spectrum of saturated hydrocarbon，vitrinite reflectance etc．，the authors analyzed the organic matter abundance，organic matter type and organic matter maturity index of hydrocarbon source rock from Middle Proterozoic Xiamaling Formation at Xiaozhuanghu section in Lingyuan--ningcheng Basin，and evaluated its hydrocarbon generation potential synthetically． The result shows that the TOC content ranges from 0. 15 percent to 1. 68 percent with an average value of about 0. 67 percent． According to the relationships between the ratios of Pr/n － C 17 and the ratios of the Ph/n － C 18 as well as the analysis of kero- gen carbon isotope，the organic matter is of Ⅰ and Ⅱ 1 type． The vitrinite reflectance ranges from 1. 26 to 2. 24 percent with an average value of about 1. 87 percent，indicating that some of the source rocks have entered into highly mature stage． It is concluded that the hydrocarbon source rocks of Xiamaling Formation in Lingyuan-- ningcheng Basin have a good material base of hydrocarbon generation，favorable organic matter type and high maturity． It might have experienced large amount of hydrocarbon expulsion．

Keywords: hydrocarbon generation potential source rock Xiamaling Formation Lingyuan--ningcheng Basin

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