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首页> 外文会议>IADC/SPE Asia Pacific drilling technology conference and exhibition: sharing for drilling excellence >The Application and Evaluation of A New Vertical and Fast Drilling Technology in Tuha Oilfield
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The Application and Evaluation of A New Vertical and Fast Drilling Technology in Tuha Oilfield

机译：新型垂直快速钻井技术在吐哈油田的应用与评价

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Cost-effective vertical and fast drilling technology has been of great interest to drilling contractors of most oilfields, but it's difficult to implement. Conventional anti-deviation drilling methods are of limited use when confronted with high-tilt angle geologic structure. Systems such as VDS, Power V and VertiTrak can be used to control the deviation angle of a vertical hole, but the rental costs associated with them are high, and sometimes, prohibitive. Therefore, there is great potential for developing a new anti-deviation technology that is costeffective. rn Slide steering BHA with two stabilizers and a bent PDM shows good anti-deviation effect when it is in rotary driven on the surface of low-dip wells. This working mode can be termed as coupled mode because the bit is driven by both PDM and rotary table/top drive equipment. The whirl feature of this kind of BHA can helps to eliminate the deviation force caused by the asymmetry point direction of bit axis. At the same time the lateral vibration of BHA introduces a large amount of antideviation force on the bit. Simulation results show that this kind of anti-deviation force 1)is much larger than that of the pendulum BHA in the same tilt angle hole, and 2) decreases with tilt angle of hole. The calculation model involved is illustrated later in the paper. rn The method above has been validated through experiments and applications in Tuha oilfield. 12 vertical wells in easily deviated geological structures have been successfully drilled applying this technology. As a result, not only the deviation angle is controlled effectively, but also penetration rate improves significantly. In particular, drilling period is reduced by 9.26 days, a 25% reduction as compared to the whole working time needed when conventional method was used.
机译：具有成本效益的垂直和快速钻井技术已引起大多数油田的钻井承包商的极大兴趣，但很难实施。当面对高倾斜角的地质构造时，常规的防偏斜钻探方法使用有限。诸如VDS，Power V和VertiTrak之类的系统可用于控制垂直孔的偏离角度，但与之相关的租赁费用很高，有时甚至高得令人望而却步。因此，具有开发具有成本效益的新的防偏离技术的巨大潜力。 rn带有两个稳定器和弯曲PDM的滑动转向BHA当在低倾注井表面旋转驱动时显示出良好的防偏移效果。这种工作模式可以称为耦合模式，因为钻头是由PDM和旋转工作台/顶部驱动设备驱动的。这种BHA的旋转特性可以帮助消除由位轴的不对称点方向引起的偏压力。同时，BHA的横向振动会在钻头上引入大量的抗偏力。仿真结果表明，在相同的倾斜角孔中，这种抗偏力1）比摆锤BHA大得多，并且2）随着孔的倾斜角而减小。本文稍后将说明所涉及的计算模型。 rn以上方法已经在吐哈油田进行了实验和应用验证。应用该技术已成功地在容易偏离的地质结构中钻了12口垂直井。结果，不仅有效地控制了偏离角，而且穿透率也大大提高。特别是，钻孔时间减少了9.26天，与使用传统方法所需的整个工作时间相比减少了25％。

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