影响水平井测量精度的几个因素

SEVERAL FACTORS INFLUENCING THE MEASURING ACCURACY OF HORIZONTAL WELL

水平井测量技术的特殊性一是比常规定向井难度大且工艺复杂 ;二是对测量精度的要求比常规定向井严格。尤其是小半径大曲率开窗水平井 ,由于其井段较短 ,调整余地小 ,且水平段数百米的长度均为靶区控制范围 ,若不解决精度问题 ,很难实现精确中靶。文中介绍了水平井测量的技术特性 ,根据水平井的施工经验和应用研究 。

This paper describes the characteristics of horizontal well measurement technology, and tries to present some methods to improve the measuring accuracy based on both field operations and case studies. Comparing with conventional directional well, horizontal well measurement is more difficult and complicated, and its requirement on measuring accuracy is stricter. For short radius horizontal sidetracking well, this is especially true, because it's difficult to adjust in the relatively short interval, and the horizontal section as long as several hundreds meters must be covered in the target area. Thus precise target hitting is difficult to achieve without improving the measuring accuracy. Some items that should be paid attention to in field operation are also discussed.