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。
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。
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。
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。
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。
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。
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