煤层中CO<sub>2</sub>注入运移瞬变电磁法监测技术探索

煤层中CO₂注入运移瞬变电磁法监测技术探索

崔方智, 周韬, 张兵

TEM monitoring technology of CO₂ injection and transport in coal seam

Fang-Zhi CUI, Tao ZHOU, Bing ZHANG

图6 煤层附近地层感应电压相对于背景值的变化量平面(上图)和变化率平面(下图)
a—2013年11月SX006-1井注入700 t CO₂; b—2015年10月SX006-1井注入1 619 t CO₂后闷井10个月,随后SX006井注入1 750 t CO₂、SX006-2井注入800 t CO₂

Fig.6 Plane diagram of relative variation of induced voltage of formation near coal seam to background value
a—700 tons of CO₂ was injected into well SX006-1 in November 2013; b—In October 2015, after injecting 1 619 tons of CO₂ into SX006-1 well, the well was closed for 10 months,subsequent 1 750 tons of CO₂ was injected into SX006 well and 800 tons of CO₂ was injected into SX006-2 well