文章摘要
程涌,唐果,张传昱,张晓伦,梁星宇,蹇龙.高演化黑色岩系原始有机质恢复——以滇东会泽地区下寒武统筇竹寺组为例[J].矿产勘查,2021,12(2):310-317
高演化黑色岩系原始有机质恢复——以滇东会泽地区下寒武统筇竹寺组为例
Restoration of the original organic matter abundance in the highly maturated black rock series:A case study from the lower Cambrian Qiongzhusi Formation in Huize area, eastern Yunnan Province
投稿时间:2020-05-31  
DOI:
中文关键词: 页岩气  原始有机质  黑色岩系  钼(Mo)  筇竹寺组  油气勘查工程  云南
英文关键词: shale gas, original organic matter, black rock series, molybdenum (Mo), Qiongzhusi Formation, oil and gas exploration engineering, Yunnan Province
基金项目:云南省教育厅科学研究基金项目(编号:2020J0771)及昆明冶金高等专科学校科研基金项目(编号:2019XJZK08)联合资助。
作者单位
程涌 昆明冶金高等专科学校,云南 昆明 650033
昆明理工大学国土资源工程学院,云南 昆明 650093 
唐果 昆明理工大学国土资源工程学院,云南 昆明 650093
中国有色金属工业昆明勘察设计研究院有限公司,云南 昆明 650051 
张传昱 昆明理工大学国土资源工程学院,云南 昆明 650093
云南省地质调查院,云南 昆明 650216 
张晓伦 昆明冶金高等专科学校,云南 昆明 650033
昆明理工大学国土资源工程学院,云南 昆明 650093 
梁星宇 昆明理工大学国土资源工程学院,云南 昆明 650093 
蹇龙 昆明冶金高等专科学校,云南 昆明 650033 
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中文摘要:
      残余有机质含量用于高成熟或过成熟烃源岩评价或油气资源量预测时可能会导致错误的结论,因此,恢复其原始有机质至关重要。静水缺氧沉积环境中的原始有机质含量与Mo/Al比值具有很好的相关性,据此提出的Mo-TOC相关性估算法是一种新的原始有机碳丰度恢复方法,简便易行,适合大量样品分析。该文以滇东会泽地区下寒武统筇竹寺组黑色岩系为例,尝试用新方法来恢复此高演化页岩的原始有机质含量。结果表明,4个回归方程计算的结果有较大的偏差,这是因为目前缺乏大量的数据进行统计回归。但根据计算结果所绘制的4条曲线的变化趋势一致,与沉积环境和岩性高度相关,粒度越细,颜色越深,有机质丰度越高。经过恢复后的原始有机质含量最小为3.20%,最大为8.04%,平均4.24%。表明该地区筇竹寺组页岩有机质丰度高,属于优质烃源岩,可以作为页岩气勘探选区的潜力层位进行进一步的评价工作。
英文摘要:
      The use of residual organic matter content in the evaluation of high mature or over mature source rocks or the prediction of oil and gas resources may lead to wrong conclusions. Therefore, it is essential to restore the original organic matter. There is a good correlation between the content of original organic matter and Mo/Al ratio in hydrostatic anoxic sedimentary environment, so the Mo-TOC correlation estimation method is a new method for the recovery of original organic matter content, which is simple and convenient, and suitable for the analysis of a large number of samples. In this paper, the black rock series of Qiongzhusi Formation of lower Cambrian in Huize area, east Yunnan province is taken as an example to try to recover the original organic matter content of this highly maturated shale with a new method. The results show that there is a large deviation in the calculation of the four regression equations, which is due to the lack of a large number of cases for statistical regression. The variation trend of the four curves drawn according to the calculation results is consistent and highly correlated with the sedimentary environment and lithology. The finer the particle size, the darker the color and the higher the organic matter abundance. After recovery the content of original organic matter was at least 3.20% and at most 8.04%, with an average of 4.24%. It indicates that Qiongzhusi Formation black rock series in this area has a high abundance of organic matter and is a high-quality source rock, which can be used as the potential horizon of shale gas exploration area for further evaluation.
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