Characteristics and Evaluation of Marine Source Rock in Southwestern Shunan
Online published: 2008-04-20
The Tertiary source rocks in the Northwest Qaidam basin are greatly heterogeneous because they are impure mudstone, so there are many disputes in the understanding and evaluation on the source rocks. In addition, the oil source is the controversial focus in this area. In view of these problems, this research firstly distinguishes the effective source rocks, and then synthetically evaluates on them, which is more reasonable than directly averaging the parameters. According to this research, the main strata of the source rocks are N1 2 and E2 3 in this area, and the most important oil forming zone is located in the area of Xiaoliangshan Nanyisha ouquanzi. On the basis of the oil source correlation result, the oil in the northwest Qaidam originate from indigenous source rocks of N1 2 or E2 3 instead of originating from Mangya depression. The oil is self generating and self preserving and vertically and horizontally migrates in short distance. Xiaoliangshan depression and its peripheral areas are the most important oil forming center and are the exploration orientation in the future.
HE Guo-Yuan, TAN Pan-Hu, GUAN Beng, LI Yuan-Kui, ZHANG Wen-Chao, DU Ban-Ban . Characteristics and Evaluation of Marine Source Rock in Southwestern Shunan[J]. Natural Gas Geoscience, 2008 , 19(4) : 509 -518 . DOI: 10.11764/j.issn.1672-1926.2008.04.509
［1］金强,查明,赵磊.柴达木盆地西部第三系盐湖相有效生油岩的识别［J］.沉积学报,2001,19(1):125-129.
［2］金强,查明.柴达木盆地西部第三系蒸发岩与生油岩共生沉积作用研究［J］.地质科学,2000,35(4):465-473.
［3］黄杏珍,邵宏舜,顾树松.柴达木盆地的油气形成与寻找油气田方向［M］.兰州:甘肃科学出版社,1993.
［4］张业成,胡景江,刘春凤.柴达木盆地地温特征及新生界生油岩热演化史［J］.西安地质学院学报,1990,12(3):18-31.
［5］妥进才,邵宏舜,黄杏珍.盐湖相生油岩中某些地球化学参数与沉积环境的关系［J］.沉积学报,1994,12(3):114-119.
［6］黄第藩,张大江,李晋超,等.柴达木盆地第三系油源对比［J］.沉积学报,1989,7(2):1-14.
［7］范连顺,王明儒.柴达木盆地茫崖凹陷含油气系统及勘探方向［J］.石油实验地质,1999,21(1):41-52.
［8］袁剑英,陈启林,陈迎宾,等.柴达木盆地油气地质特征与有利勘探领域［J］.天然气地球科学,2006,17(5):640-644.
［9］杜彬彬,关平,谭彦虎,等.柴达木盆地西部北区E13碎屑岩的成岩作用及其热力学分析［J］.沉积学报,2007,25(6):852-857.
［10］曹海防,夏斌,范立勇,等.柴达木盆地西部南翼山裂缝油气藏形成机制及分布规律［J］.天然气地球科学，2007，18(1):71-77.
［11］陈迎宾,袁剑英,陈启林,等.柴达木盆地西部南区断裂发育特征及对成藏的控制作用［J］.天然气地球科学，2006，17(5):645-648.
［12］季东,关平,肖玉雄,等.原油极性分离法及其对解释原油碳同位素特征的作用［J］.天然气地球科学,2007,18(3):447-453.
［13］郑亚东,莫午零,张文涛,等.柴达木盆地油气勘探新思路［J］.石油勘探与开发，2007,34(1):13-18.
［14］莫午零,郑亚东,张文涛,等.柴达木盆地油泉子储油构造分析［J］.石油与天然气地质，2007,28(3):324-328.
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