摘要
白云化作用是影响大牛地气田马五5亚段储集物性的关键因素。元素录井技术可以直接、连续地测定岩屑中的元素含量,反推矿物类型和含量,进而实现岩性准确定名和白云化程度评价。共选择大牛地气田28口关键井进行了元素录井解释处理和白云化特征分析,得出以下认识:气田区内大多数井(约68%)在马五5亚段都发生了不同程度的白云化作用,且纵向上云质岩类集中发育在顶部;马五5亚段云质岩类主要发育在气田的西北、东北部,基本呈环带状分布。因此,马五5亚段顶部以及气田的西北、东北部应是今后大牛地气田井位部署的重点区域。
Dolomization is the key factor affecting the reservoir physical properties of M 5-5 submember of Daniudi Gas Field.The element logging technology can directly and continuously determine the element content in the cuttings,deduce the type and content of minerals in turn,and then realize the accurate naming of lithology and the evaluation of dolomization degree.A total of 28 key wells in Daniudi Gas Field were selected for element logging interpretation and dolomization characteristics analysis,and the following understandings were obtained.Most of the wells(about 68%)in the gas field area have different degrees of dolomization in M5-5 submember,and the dolomite is concentrated at the top longitudinally.The dolomites in M 5-5 submember are mainly developed in the northwest and northeast of the gas field,and are basically distributed in girdle band.The top of M 5-5 submember and the northwest and northeast of the gas field should be the main areas for the well location arrangement of Daniudi Gas Field in the future.
作者
姜海申
邱田民
王晓阳
蒋融
程豪华
Jiang Haishen;Qiu Tianmin;Wang Xiaoyang;Jiang Rong;Cheng Haohua(Funiu Road,Zhongyuan District,Zhengzhou City,Henan Province,450000,China)
出处
《录井工程》
2019年第4期51-54,147,共5页
Mud Logging Engineering
基金
中国石油化工股份有限公司华北油气分公司重点项目“大牛地气田奥陶系风化壳及盐下地层发育特征研究”(编号：34550000-17-ZC0613-0011)
