页岩矿物成分井场快速评价研究

Rapid in situ Evaluation of Mineral Compositions in Shale Wells

针对实验测试技术和测井技术在页岩气勘探开发中矿物成分识别上存在的局限性,对钻井过程中的页岩矿物成分进行快速评价研究。利用X射线荧光元素录井技术、X射线衍射仪对岩心、岩屑进行组成元素及矿物成分研究。X射线荧光录井仪测量得出的岩石元素组成经过计算与地质分析可以转换为岩石矿物组成,其结果与实验室X射线衍射仪测量结果符合程度较高。X射线荧光元素录井技术在获得页岩气勘探开发中的矿物组成方面具有快速、连续、效益方面的优势,对于页岩气藏评价具有重要意义。

To overcome limitations of laboratory testing and logging technology in mineral compositions identification during the shale gas exploration and development, a rapid evaluation study for shale minerals identification was per- formed while drilling to study their element and mineral compositions using X-ray fluorescence element logging and X-ray diffraction techniques. By using calculation and geological analysis methods, the mineral compositions can be obtained from element compositions of rock measured by X-ray fluorescence logging, and the obtained result matched well with laboratory X-ray diffraction measured result. In terms of the advantages of rapid, continuous, and low cost on mineral identification, the X-ray fluorescence element logging technology has great significance in shale gas exploration and development.