盖层测井资料识别与评价

Identification and evaluation of caprock by log information

测井资料纵向分辨率高、资料连续性强且易于获取,盖层在测井资料上具有明显的响应特征,经分析资料刻度后,利用测井资料可获得纵向连续的盖层评价数据,弥补了分析数据离散的不足,具有经济、快捷的特点。依据泥岩盖层与测井响应之间的关系,使用测井资料获取定量评价盖层封盖质量的参数,对泥质盖层的封盖性进行定量评价。系统总结了盐岩、煤岩、火山岩、致密砂岩和碳酸盐岩等岩性盖层发育特征及测井识别评价方法。

The log information have high vertical resolution, good continuity and easy to obtain, the caprock shows obvious characteristics of response on the log information, after the calibration of the log information is analyzed,the continued caprock evaluation data in vertical could be obtained to compensate the lack of the data dispersion, it is economic and prompt. According to the relation between the caprock and the log responses, the parameters are obtained by the log information to quantitatively evaluate the quality of the caprock. The development characteristics and log identification evaluation methods of the caprocks of the salt rock, coal, volcanic rock, dense sandstone, and carbonate rock etc were summarized.