鄂尔多斯盆地页岩油优质储层评价方法

Evaluation method of high⁃quality shale oil reservoir in Ordos Basin

页岩油优质储层综合研究主要是对页岩储层储集油气的能力进行客观评价,目的在于通过“甜点”的确定为页岩油勘探开发提供准确的优质储层发育区,从而利用获得的评价结果为页岩油开发提供科学可行的指导。采用录井方面的技术,围绕页岩油“甜点段/区”评价思路对储层进行综合分析,利用页岩油烃源岩岩相与岩性、烃源岩特性、含油性、可动性、储集性、脆性这“六性”之间匹配关系,建立了鄂尔多斯盆地页岩油优质储层解释评价体系及标准。为页岩油的勘探、开发提供理论和实际相结合的参考与指导,最终达到页岩油开采增产增效的目的。

The comprehensive study of high⁃quality shale oil reservoir mainly refers to the objective evaluation of shale reservoir storage capacity,and its purpose is to provide accurate and high⁃quality reservoir development area for shale oil exploration through the determination of"dessert".Finally,the evaluation results obtained are used to provide scientific and feasible guidance for the implementation of shale oil development.In this paper,mud logging technology is used to comprehensively analyze the reservoir around the"sweet spot section/area"of shale oil.The matching relationship for shale oil source rock lithofacies and lithology,source rock characteristics,oil⁃bearing property,mobility,reservoir property and brittleness is used to establish the interpretation and evaluation system and standards of high⁃quality shale oil reservoir in Ordos Basin.It provides theoretical and practical reference and guidance for shale oil exploration and development,and achieves the purpose of increasing production and benefits of shale oil exploitation.