柔性纠斜防斜钻具组合的应用研究

Application and Research on Combination of the Flexible Deviation Correction and Prevention Drilling Tools

柔性纠斜防斜钻具组合在提高机械钻速的情况下能有效地控制井斜增加,并具有降斜作用,为大倾角硬地层易斜区快速纠斜防斜钻进提供了一种新的钻具组合类型。介绍了柔性防斜纠斜钻具组合的防斜纠斜机理,对其力学模型进行了分析,提出了其防斜纠斜的钻进技术措施。

Combination of flexible deviation correction and prevention drilling tools can control the increase of deviation of the drilling well effectively while the rate of penetration （ROP） is increased, and can decrease the deviation also. It provides us a new type of the combination of drilling tools for the big inclination angle and hard stratum area, in which deviation is very easy to be encountered during drilling. In this paper, we introduce the mechanism of deviation correction and prevention of the combination of these flexible drilling tools ; meanwhile, analyze the mechanical model of this type of drilling tools, then put forward the deviation correction and prevention drilling technical measure.