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1·According to the normal well path types of the directional and sidetrack Wells, the calculating process is analyzed and the application cases are given.

针对定向井、侧钻井井眼轨道的常见类型给出了不同的优化数学模型，分析了计算过程，并给出了应用实例。

2·This technology can do repetition measurement of well bore track, determine drilling direction and window cutting direction of sidetrack well and so on.

该技术可用于井身轨迹复测、钻井定向和侧钻井开窗定向等。

3·When severe, these problems can force to sidetrack or abandon a well.

严重情况下，这些问题会强迫进行侧钻或者弃井。

4·The research cutting window sidetrack drilling cementing quality has important significance for improving oil development result, extending the production life of oil well and reducing the cost.

研究开窗侧钻井固井质量，对提高油气开发效果、延长油井的使用寿命、降低成本，具有重要意义。

5·The mathematical model for evaluating sidetrack horizontal well drilling is developed by using the fuzzy mathematical theory and analytical hierarchic process.

针对侧钻水平井钻井的特点，应用模糊数学理论和层次分析方法，建立了侧钻水平井钻井综合评价模型。

6·The DH4-8 well, located at Donghetang Oilfield in Tarim Basin, Xinjiang, is a directional production well with the deepest open hole sidetrack point and the longest open hole section.

位于新疆塔里木东河塘油田的DH 4- 8井是目前国内裸眼侧钻点最深、裸眼井段最长的定向开发井。

7·It's difficult to sidetrack in the deep well in salt bed, especially the creeping of the gypsum-salt bed, hole diameter reduction and collapsion etc. are the biggest barriers for sidetrack drilling.

在深井盐层中进行侧钻困难较大，膏盐层的蠕动、缩径、垮塌等不稳定性是侧钻的最大障碍。

8·As Lakers fans know all too well, sometimes it doesn't take an injury to sidetrack a team.

然而湖人球迷都清楚地知道，有时候，并不是伤病牵制了球队。

9·Developed step by step, the technology of sidetrack drilling horizontal well in slim-hole is relatively mature, whole it's fist time to apply it in Dagang oilfield.

小井眼侧钻水平井技术经过不断的完善已基本成熟，但在大港油区内应用属首次。

10·The experimental results shows that sidetrack horizontal well can really increase oil production, extend the production life of injecting water reservoir and enhance oil recovery.

侧钻水平井确实能提高开采效果，延长注水油藏的生产寿命，提高最终采收率。