空间曲线定向钻穿越设计与应用

Design and Application of Directional Drilling Crossing Space Curve

油气管道工程建设中,在同一纵断面形成曲线的二维定向钻技术已日渐成熟,但因地形受限,采用空间曲线进行定向钻穿越设计,在国内应用较少。文中结合工程设计实例,重点介绍定向钻穿越利用空间曲线解决管线预制场地的直线和穿越中线在水平面形成夹角造成的难题。结合美国材料试验学会ASTM法对空间曲线定向钻穿越回拖力计算进行了应用简析。

The two dimensional directional drilling technology has become more mature in oil and gas pipeline engineering construction. But because of the limited terrain,domestic applications of directional drilling crossing design by using space curve were less. Combined with example of engineering design,this paper focused on the directional drilling crossing with space curve to solve the problem of angle forming in the horizontal plane between pipeline prefabrication site line and crossing the midline. Com-bined with the ASTM calculation method,the back drag force of directional drilling corssing space curve was analyzed.