摘要
为探索煤层气地质甜点预测方法,以沁水盆地柿庄南区块为靶区,提出了利用分频属性反演技术和频谱成像技术预测了煤层厚度与含气量,并结合钻井获取的其他煤储层评价参数,采用多层次模糊评价方法预测柿庄南区块3号煤煤层气地质甜点。结果表明,柿庄南区块3号煤层在平面上存在3个地质甜点区,即中部甜点区、东北部甜点区和西部甜点区。与现今煤层气井产量分布对比显示,高产井主要分布在中部甜点区内,低产井绝大多数位于非甜点区。由此可见,柿庄南区块煤层气地质甜点的预测较为准确。
To explore the prediction technique of CBM geological sweat spots,the Southern Shizhuang block of Qinshui Basin was taken as the study area,and frequency-divided inversion and spectrum imaging techniques were applied to predict coal seam thickness and gas content. Combined with the other parameters of coal reservoirs from exploratory wells,multi-layer evaluation method was applied to determine the CBM sweet spot of No. 3 coal seam in Southern Shizhuang block. The results showed that three sweet spots in the No. 3 coal seam existed in the study area,namely central,northwest and west sweet spots. Compared with the distribution of gas production performance,high production performance was located in the central sweet spot,and low production performance located in no-sweet spot,which meant that the prediction of sweet spots was fairly reliable.
出处
《洁净煤技术》
CAS
2016年第3期102-107,共6页
Clean Coal Technology
基金
国家科技重大专项资助项目(2011ZX05060)
中海油总公司综合科研项目(YXKY-2015-ZY-08)
关键词
煤层气
甜点
分频属性反演
频谱成像
柿庄南
沁水盆地
coalbed methane
sweet spot
frequency-divided inversion
spectrum imaging
Southern Shizhuang block
Qinshui Basin
