德惠断陷火石岭组资源潜力研究

发布时间：2018-07-08 20:21

本文选题：德惠断陷 + 火石岭组　；参考：《东北石油大学》2015年硕士论文

【摘要】：东部断陷带火石岭组地层含气面积广,潜力巨大,但地质条件复杂,普遍勘探程度低,烃源岩化验分析数据较少,这影响了对火石岭组生烃潜力的认识。本文通过对德惠断陷火石岭组进行定性、定量评价,相信会对未来深层天然气勘探工作会有一定的指导意义。德惠断陷位于松辽盆地东南隆起区中部,断陷总体上为NE向双断型断陷,过去的资料主要研究的是营城组和沙河子组这两套主力烃源岩,而对火石岭组的研究并不多。根据该区烃源岩的发育分布和地化特征,结合前人的资料对德惠断陷火石岭组烃源岩进行定性评价。据钻井资料显示,德惠断陷火石岭组泥岩分布普遍,暗色泥岩很发育,并且在德惠断陷钻遇煤。应用所测岩样中有机碳TOC、干酪根显微组分、有机质族组成、干酪根的碳同位素组成、镜质体反射率等分析指标从烃源岩的地球化学特征,来评价有机质丰度、有机质类型、有机质成熟度等,确定烃源岩的生烃门限,最后根据埋藏史、热史、生烃史研究,通过资源量计算,完成该区烃源岩的定量评价。经过评价,德惠断陷火石岭组大部分达到了好~很好的标准,有机质类型主要为Ⅱ1、Ⅱ2、Ⅲ型,整体上位于成熟至高成熟阶段,其中位于成熟阶段的占主要地位,因此,火石岭组也具有良好的生烃潜力,尤其是生气潜力更为客观。德惠断陷生烃门限在Ro=0.7%,油裂解门限在Ro=1.1%,煤成气门限在Ro=0.7%。火石岭组大量生烃时期与泉头组到嫩江组沉积时期,基本上是一种一一对应的关系。烃源岩资源量评价表明,德惠火石岭组净油量为467824.34万吨,总气体积为11867.92亿方。选取德惠断陷火石岭组的运聚系数2.06%,计算出火石岭组为生气体积244.48亿方。
[Abstract]:The fire Shiling formation in the eastern fault depression zone has a wide range of gas area and great potential, but the geological conditions are complex, the general exploration degree is low and the analysis data of hydrocarbon source rock are less. This has influenced the understanding of the hydrocarbon potential of the fire Shiling group. This paper, through the qualitative and quantitative evaluation of the Dehui faulted fire Shiling group, believes that the deep gas exploration work will be done in the future. The Dehui fault depression is located in the middle of the southeast uplift area of the Songliao Basin, and the fault depression is generally NE trending fault depression. The past data mainly studied the two main source rocks of the Yingcheng Group and the Shahe subgroup, but not much study on the flint rock formation. The data of the source rocks of the fire Shiling formation in the Dehui fault depression are qualitatively evaluated by human data. According to the drilling data, the mud rock in the Shiling formation of the fire in the Dehui fault depression is widely distributed, the dark mudstone is very developed and the coal is drilled in the Dehui fault depression. The organic carbon composition of the kerogen, the carbon isotope composition of the kerogen, the vitrinite composition and the microscopic composition of the kerogen are applied to the rock samples in the Dehui fault depression. From the geochemical characteristics of source rocks, the index of body reflectance is used to evaluate the abundance of organic matter, the type of organic matter, the maturity of organic matter and so on, to determine the hydrocarbon generation threshold of the source rocks. Finally, the quantitative evaluation of the source rocks in this area is completed according to the history of burial, thermal history and hydrocarbon generation. Through the calculation of the resource amount, the Shiling formation of the Dehui faulted fire has been evaluated. Part of the good standard is good, and the main types of organic matter are II 1, II 2 and type III, which are in the mature and high mature stage as a whole, which occupy the dominant position in the mature stage. Therefore, the Firestone Ridge Group also has good hydrocarbon generating potential, especially the potential of gas generation. The hydrocarbon generation threshold of Dehui fault depression is at Ro=0.7%, and the threshold of oil cracking is Ro= 1.1%, the coal formed gas threshold is in the period of large amount of hydrocarbon generation in the Ro=0.7%. fire stone formation and the period of the spring head formation to the Nenjiang formation, which is basically a one-to-one relationship. The evaluation of source rock resources shows that the oil net oil amount of the Dehui fire Shiling formation is 4 billion 678 million 243 thousand and 400 tons and the total gas volume is 1 trillion and 186 billion 792 million. The accumulation coefficient of the Shiling group in Dehui fault depression is selected as the accumulation coefficient of 2.06%. It is calculated that the flint rock group is 24 billion 448 million Party of gas volume.
【学位授予单位】：东北石油大学
【学位级别】：硕士
【学位授予年份】：2015
【分类号】：P618.13

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