准东地区北部二叠系致密油藏烃源岩测井评价  

The logging Evaluation of Source Rocks in Permian Tight Oil Reservoir in Northern East Junggar Basin

作　　者：焦翠华[1] 王清辉[1] 徐怀民[1] 赵磊[1] 易震[1] 李林 吴坚 

机构地区：[1]中国石油大学地球物理与信息工程学院,北京102249 [2]中国石油新疆油田分公司勘探开发研究院地球物理研究所,乌鲁木齐830000

出　　处：《新疆石油地质》2013年第5期524-527,共4页Xinjiang Petroleum Geology

摘　　要：岩心和岩屑样品的地化分析数据表明,准东地区北部二叠系平地泉组一段发育一套好的烃源岩,有机质类型以Ⅰ型和Ⅱ1型为主。为了全面认识该烃源岩特征并对其进行评价,利用岩心地化分析资料标定测井信息,建立了适合研究区的烃源岩识别及评价方法。研究采用改进的声波电阻率重叠、多元统计回归、烃源岩岩石物理体积模型及密度孔隙度与核磁孔隙度之间的差异等多种方法计算烃源岩的有机碳含量;利用地化分析资料,建立裂解烃S2与有机碳含量之间的关系,并计算出氢指数;运用氢指数与热变指数及热变指数与镜质组反射率之间的关系,实现对烃源岩成熟度的评价。运用这套方法,对准东地区北部二叠系烃源岩的参数进行评价。岩心、岩屑地化分析资料证明,该方法在研究区应用效果较好,为该区的致密油的资源量计算提供有力的证据。The geochemical analysis data of the core and rock debris samples show that high quality lacustrine source rocks are developed in the 1st Member of Pingdiquan formation of Middle Permian in north of the eastern Junggar basin, with kerogen types of I and II 1. In or- der to comprehensively understand and evaluate the source rocks, this paper develops proper the identification and evaluation methods of the source rocks in this area by means of the well log information calibrated by the core geochemical analysis data. The TOC of source rocks is calculated by many methods, such as the modified acoustic-resistivity superposition, the muhifactor statistical regression, the petro- physical volume model of source rocks and the differences between the DEN porosity and NMR porosity. The relationship between pyroly- sis hydrocarbon S2 and TOC is developed by the geochemical analysis data, by which IM is also calculated. And the source rocks maturity evaluation is based on the relationships between IH and thermal alteration index （IRA）, ITA and Ro. Case study indicates that such methods are good for application, and can be as a powerful evidence for estimation of the tight oil resources amount in this area.

关 键 词：准东北部 平地泉组 致密油 烃源岩 测井评价 

分 类 号：P631.86[天文地球—地质矿产勘探]