Geochemical Characteristics and Their Significance of Crude Oilsfrom Chang 3 Oil Layer Group of Zhen 28 Well Field, Yanwu Highland
Received date: 2008-03-10
Revised date: 2008-08-01
Online published: 2008-10-10
Twelve crude oils from the Zhen 28 Well field in the Ordos Basin were systematically analyzed and the geochemical characteristics of biomarkers in these samples were studied. The distribution and composition of the biomarkers indicate: the distribution of normal alkane and tricyclic terpanes shows that homoneneae and higher plants contribute to organic material, and the latter is the main contributor; the values of Pr/Ph, Pr/n C17 and Ph/nC18 reflect that crude oils are generated in a low-oxidizing-low-reducing depositional environment; the content of gammacerane in crude oils suggests that crude oils are generated in a fresh water depositional environment; the parameters of C29 steranes and C31 hopanes isomers also reach equilibrium value, the value of diasteranes/regular\|steranes and Ts/(Tm+Ts) are high, CPI is close to 1, and the methylphenanthrene index suggests respectively that crude oils are in the mature stage.
LIU Yu-hua,; WEN Zhi-gang,; SONG Huan-xin,, ZHU Jian-bin . Geochemical Characteristics and Their Significance of Crude Oilsfrom Chang 3 Oil Layer Group of Zhen 28 Well Field, Yanwu Highland[J]. Natural Gas Geoscience, 2008 , 19(05) : 718 -721 . DOI: 10.11764/j.issn.1672-1926.2008.05.718
［1］Tissot B T,Welte D H.Petroleum formation and occurrences :A new approach to oil and gas exploration［ M］.Berlin:Springer,1984:215-216.
［2］杨华,张文正.论鄂尔多斯盆地长7段优质油源岩在低渗透油气成藏富集中的主导作用:地质地球化学特征[J].地球化学,2005,34(2):147-154.
［3］王启军,陈建渝.油气地球化学[M].北京：中国地质出版社,1988：136-138.
［4］徐伟民.石油地球化学在油气勘探中的应用[M].东营：石油大学出版社,1993:55-57.
［5］段毅,吴保祥,张辉,等.鄂尔多斯盆地西峰油田原油地球化学特征及其成因[J].地质学报,2006,80（2）：301-310.
［6］Peters K E,Walters C C,Moldowan J M.The Biomarker Guide[M].Englewood Cliffs,New Jersey:Prentice Hall,Inc,1993:114-116.
［7］包建平,朱翠山.库车坳陷前缘隆起带上原油地球化学特征[J].石油天然气学报,2007,29(4):40-44.
［8］尹伟.准噶尔盆地中部原油地球化学特征[J].石油与天然气地质,2005,26(4）：461-468
［9］胡雄,李延钧,陈新领,等.柴北缘马海地区油气全烃地球化学特征与成因[J].天然气地球科学,2005,16(5):613-616.
［10］朱扬明,梅博文,傅家谟,等.塔里木原油饱和烃生物标志物分布特征[J].江汉石油学院学报,1997,19 (3):24-29.
［11］朱扬明,张春明,张敏,等.沉积环境的氧化还原性对重排甾烷形成的作用[J].沉积学报,1997,15 (4):104-108.
［12］妥进才.塔里木盆地三叠系有利生烃组成分析[J].天然气地球科学,2003,14(2):120-125.
［13］林壬子,王培荣,戴允键,等.矿物燃料中多环芳烃的石油地球化学意义［C］//有机地球化学论文集.北京:地质出版社,1987:120-140.
［14］文志刚,唐友军.苏丹Muglad盆地六区块原油的地球化学特征[J].石油天然气学报,2007,29(4）：66-70.
/
| 〈 |
|
〉 |
甘公网安备 62010202000678号