煤层气成像测井方法综合应用

来源 :2012煤层气工程技术推介交流会 | 被引量 : 0次 | 上传用户:liuganghy2
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  本文重点阐述了成像测井在煤层结构分析、煤层顶底板综合评价等方面的应用成果。指出,成像测井在煤层划分、煤储层参数计算、煤层结构描述、煤层顶底板封隔性、煤层系统综合评价等诸多方面可以提供可靠信息,有着其他方法不可替代的作用;煤储层本身是低孔-特低孔、低渗-特低渗储层,且非均质性强,常规测井难以提供准确的孔隙度、渗透性的评价。核磁共振测井和煤心实验是评价煤层物性的有效手段;电成像资料可以进行煤体结构分析,能够进行裂隙评价,进而对煤层的渗透性做出分析;电成像、阵列声波测井、核磁共振测井是评价煤层顶底板的封堵性、稳定性的重要手段;煤层易破碎垮塌,而良好的井眼环境是取得优质测井资料的有力保障。要提高煤层测井评价精度,充分发挥测井的作用,需要做好煤层井壁防垮。
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