松辽盆地南部的低熟油特征与分布  

Characteristics and occurrence of immature oil in southern Songliao basin

作　　者：谷祖庆[1] 刘鸿友[2] 景成杰[1] 石中斌 高玉[1] 盛利[1] 孙红[1] 

机构地区：[1]中国石油吉林油田勘探开发研究院 [2]中国矿业大学(北京校区)

出　　处：《石油勘探与开发》2002年第5期19-21,共3页Petroleum Exploration and Development

摘　　要：通过原油地化特征分析 ,明确了松辽盆地南部黑帝庙油层低熟油油源及油藏分布规律。该地区的黑帝庙油层低熟油相对密度、饱和烃含量高 ,沥青质含量很低 ,饱芳比高 ;正构烷烃OEP值平均为 1.3 4,Pr/Ph值平均为 1.5 3 ,孕甾烷、升孕甾烷含量较低 ,甲基甾烷和重排甾烷不多 ,三环萜烷含量低 ,正规甾烷呈“V”字形分布 ,以ααα2 0RC2 9甾烷为主 ,表明水生生物和陆生高等植物贡献均较大。低熟油主要来源于嫩江组暗色泥岩。黑帝庙油层近期勘探方向应在新北—新立、塔虎城、大老爷府、红岗南、黑帝庙等地区。In this paper, the author directs the source rock and distribution law of immature oil by analysis of geochemistry characteristics of crude oil. Immature oil only exists in Heidimiao reservoir among six oil bearing strata. To immature oil, the relative density, and the content of saturated hydrocarbon are high, the content of pregnane and homopregnane are low and the ratio of saturated hydrocarbon to aromatics are high, asphaltene content is low, the maximum of OEP index is 2.22 with an average value of 1.34 and the ratio of protane to phytane is 1.53. There is the 'V' pattern distribution of 20R 5 α (H), 14 α (H), 17 α (H) cholestane, 20R 24 Methy1 5 α (H), 14 α (H), 17 α (H) cholestane and 20R 4 α Methy1 5 α (H), 14 α (H), 17 α (H) cholestane, content of methyl sterane, diasterane and methyl sterane is low. The immature oil mainly comes from immature source rock of Nenjiang Fomation. The latest potential exploration areas are located in Xinbei Xinli, Tahucheng, Dalaoyefu, southern Honggang and Heidimiao areas.

关 键 词：松辽盆地南部 低熟油 特征 分布 黑帝庙油层 烃源岩 嫩江组 

分 类 号：P618.130.2[天文地球—矿床学] TE12[天文地球—地质学]