High molecular weight (C_(35)^+) n-alkanes of high-waxy condensate and its source kitchen orientation in the Qianmiqiao burial-hill zone, Bohai Gulf Basin

作     者：WANG Tieguan ZHU Dan LU Hong ZHANG Zhihuan SU Junqing LIAO Qianjin 

作者机构：Key Laboratory of Petroleum Accumulation Mechanism of the Ministry of EducationUniversity of PetroleumBeijing 102249China Guangzhou Institute of GeochemistryChinese Academy of SciencesGuangzhou 510640China Geological Research InstituteDagang Oilfield(Group)Co.Ltd.Tianjin 300280China 

出 版 物：《Science China Earth Sciences》 (中国科学（地球科学英文版）)

年 卷 期：2004年第47卷第3期

页      面：255-264页

学科分类：070704[理学-海洋地质] 0709[理学-地质学] 07[理学] 0707[理学-海洋科学] 

基　　金：This study was supported by the National Natural Science Foundation of China (NSFC No. 40172056) the Research Found for the Doctoral Program of High Education (RFDP No. 2000042506) 

主　　题：Qianmiqiao burial-hill high temperature gas chromatography (HTGC) high-waxy condensate high molecular weight (HMW) n-alkanes. 

摘      要：The high-waxy condensate in the Qianmiqiao Ordovician burial-hill zone, Bohai Gulf Basin, North China has been investigated by way of high temperature gas chromatography. As high-mature oil, its high molecular weight wax fraction is mainly composed of C35—C69 n-alkanes with CPI37—55 values of 0.94—1.10. On conditions that core-drilling of source rocks was limited and the exact location of source kitchen is still uncertain in the region, it is inferred that the ori-entation of main source kitchen for the condensate should be on the east of the burial-hill zone, i.e. from the direction of Qikou Sag, according to oil-oil correlation between the condensate and surrounding high-waxy oils as well as lateral distribution of the wax content of crude oils. In addi-tion, it is also further confirmed that the oil filling direction for this condensate reservoir is from NE to SW, i.e. from wells BS-4, through BS-7, to BS-8 based on the analyses of 9 maturity and 3 pyrrolic N-compound parameters.