摘要
由于岩心样品的数量有限,仅仅能够得到样品的有机地球化学指标,却无法得到单井连续的分析数据。测井数据具有纵向连续且清晰等特点,测井信息可以间接反映地层信息,从而使评价地层的资料更为充分有力。通过分析镇北Z区烃源岩测井响应特征,利用多元回归统计法拟合出研究区TOC(总有机碳含量)计算模型,根据岩性特征、总有机碳含量,结合测井响应特征,对烃源岩进行分类评价;并得到研究区烃源岩及优质烃源岩展布特征。镇北Z区烃源岩整体发育,平均总厚度24.7 m,中部偏北区域高达40 m;优质烃源岩较发育,占总厚度的49%,主要集中在西北区域。
Due to the limited number of core samples,only the organic geochemical indicators of the samples can be obtained,but the continuous analysis data of a single well cannot be obtained.Logging data has the characteristics of vertical continuity and clarity.Logging information can indirectly reflect the formation information,so that the data for the evaluation of the formation is more sufficient and powerful.In this paper,by analyzing the logging response characteristics of source rocks in Zhenbei Z area,the TOC(total organic carbon content)calculation model of the study area is fitted by the multiple regression statistical method,and the logging response characteristics are combined according to lithological characteristics,total organic carbon content and logging response characteristics,To classify and evaluate the source rocks;and obtain the distribution characteristics of source rocks and high-quality source rocks in the study area.The source rocks in Zhenbei Z area are developed as a whole,with an average total thickness of 24.7 m,and up to 40 m in the north-central area;high-quality source rocks are well developed,accounting for 49%of the total thickness,mainly concentrated in the northwest region.
作者
冯钊
谭成仟
韩建伟
FENG Zhao;TAN Cheng-qian;HAN Jian-wei(Xi’an Shiyou University,Xi’an 710065,China;PetroChina Tarim Oilfield Company,Korla 841000,China)
出处
《河北地质大学学报》
2022年第1期44-49,共6页
Journal of Hebei Geo University
关键词
致密油
烃源岩评价
测井
tight oil
source rock evaluation
well logging
