HIGH QUALITY SOURCE ROCKS OF NANTUN FORMATION IN WUERXUN DEPRESSION, THE HAILAER BASIN
-
摘要: 运用钻井岩心及测井资料,对海拉尔盆地乌尔逊凹陷烃源岩的生物发育、地球化学特征进行研究,认为乌尔逊凹陷南屯组发育有薄层优质烃源岩,它们有机质丰度高,类型好,生烃潜力大。结合研究区地质条件,并参考前人的研究成果,建立了适合本区优质烃源岩的评价标准;认为本地区烃源岩在生烃潜量(S1+S2)大于20mg/g,氯仿沥青"A"大于0.3%,TOC大于5.0%,总烃(HC)大于700×10-6的情况下为优质烃源岩;同时,运用有机碳测井评价方法,结合研究区优质烃源岩评价标准,分析了区内诸多钻井优质烃源岩的分布特征。结果表明,研究区优质烃源岩主要发育在南屯组,特别是该组的上部,南屯组一段烃源岩的厚度大于南屯组二段。总的来说,本区优质烃源岩的发育对盆地油气成藏产生较大的生烃贡献。Abstract: Source rocks of Wuerxun Depression of the Hailaer Basin were investigated to characterize their biological developments,organic geochemistry.Together with wire logs and well cores analyses,three series of high quality source rocks in Nantun Formation were discovered.They all have good organic types,high abundance of organic materials and high hydrocarbon potentials.Combined with geological setting and referred previous study,the criterion of high quality source rocks was established[(S1+S2) 20mg/g,chloroform bitumen "A"> 0.3%,TOC>5.0% and HC>700×10-6],which was fit for the whole study area.Through the method of organic carbon log,the distribution of high quality source rocks was confirmed,which showed that the high quality source rock was mainly developed as thin layere in the Nantun Formation,especially in the upper part.In short,the development of the high quality source rocks contributed greatly to the pool forming.
-
[1] Espitalie J,Bordenave M L.Rock-Eval pyrolysis[A].Applied petroleum geochemistry[C],Paris:Editions Technip,1993.161 [2] 张林晔,孔祥星,张春荣等.济阳坳陷下第三系优质烃源岩的发育及其意义[J].地球化学,2003,32(1):35~41 [3] 侯读杰,肖建新,程顺国等.济阳凹陷优质烃源岩与隐蔽油气藏的成藏关系分析[A].陈会鑫.第二届中国石油地质年会——中国油气勘探潜力及可持续发展论文集[C],北京:石油工业出版社,2006.486~499 [4] 姜福杰,庞雄奇,姜振学等.海拉尔盆地乌尔逊及贝尔凹陷烃源岩有机质丰度的恢复[J].石油实验地质,2008,30(1):82~85 [5] 冯志强,任延广,张晓东等.海拉尔盆地油气分布规律及下步勘探方向[J].中国石油勘探,2004,9(4):19~21 [6] 张吉光,彭苏萍,林景晔.乌尔逊凹陷沉积成岩体系与油气分布[J].古地理学报,2002,4(3):74~81 [7] 张文宾,陈守田,周俊宏.海拉尔盆地油气分布规律及成藏模式[J].大庆石油学院学报,2004,28(6):8~10 [8] Tissot B P,Welte D H.Petroleum formation and occurrence:A new approach to oil and gas exploration[M].New York:Springer Verlag,1978.538 [9] 侯读杰,王铁冠.陆相油气地球化学研究[M].武汉:中国地质大学出版社,1996 [10] 李守军.正烷烃、姥鲛烷与植烷对沉积环境的指示意义——以山东济阳坳陷下第三系为例[J].石油大学学报(自然科学版),1999,23(5):14~23 [11] 朱光有,金强.东营凹陷两套优质烃源岩层地质地球化学特征研究[J].沉积学报,2003,21(3):506~512 [12] 周杰,李娜.有关烃源岩定量评价的几点意见[J].西安石油大学学报(自然科学版),2004,19(1):15~23 [13] 刘全有,刘文汇,王晓锋等.不同烃源岩实验评价方法的对比[J].石油实验地质,2007,29(2):88~93 [14] Carpentier B.Wireline logging and source rocks-estimation of organic carbon by the CARBOLOG method[J].The Log Analyst,1991,32(3):279~297 [15] Passey Q R,Creaney S,Kulla J B,et al.A practical model for organic richness from porosity and resistivity logs[J].AAPG Bulletion,1990,74(12):1777~1794 [16] 运华云,项建新,刘子文.有机碳测井评价方法及在胜利油田的应用[J].测井技术,2000,24(5):372~381 -
计量
- 文章访问数: 1421
- HTML全文浏览量: 58
- PDF下载量: 1172
- 被引次数: 0