水平定向钻穿越湘江复杂卵石地层关键技术

Key Technologies of Horizontal Directional Drilling Crossing Complex Pebble Formation of Xiangjiang River

结合工程案例,对输气管道水平定向钻穿越湘江复杂卵石地层的风险和关键技术(套管隔离卵石层,定向钻双向对钻中间对接技术,针对圆砾层配置专用优质泥浆、管道防腐层外裹覆CND光敏固化玻璃钢保护套)进行探讨。

Combined with the engineering case,the risks and key technologies of horizontal directional drilling of gas transmission pipeline crossing the complex pebble formation of Xiangjiang River are discussed(casing isolating pebble layer,directional bidirectional drilling intermediate connection technology,configuration of special high-quality mud for round gravel layer,pipeline anticorrosion layer with CND photosensitive curing FRP protective sleeve)