深水救援井井眼轨道设计探讨

发布时间：2018-06-21 04:51

本文选题：深水钻井 + 救援井　；参考：《石油钻探技术》2017年01期

【摘要】：国内深水救援井井眼轨道设计既无标准可供参考,也无实际设计经验可供借鉴,为此,从救援井实施限定条件着手,制定了深水救援井井口位置选择图版和连通点(目标点)位置选择原则,对"J"形、平行接近连通形、直接连通形以及穿越(pass-by)形等4种救援井常用井眼轨道进行了对比分析,认为穿越(pass-by)形轨道在扩大探测范围和提高定位精度方面有很大的优势,因而将其作为深水救援井井眼轨道的首先,并将其划分为接近、测距定位、追踪跟随和连通4个阶段,研究了各阶段的切入角、井间距等关键设计要素,确定救援井井眼轨道最大井斜角小于60°,狗腿度不超过3°/30m,形成了深水救援井井眼轨道设计基本方法,并利用该方法对中国海油海外区块一口深水救援井的井眼轨道进行了设计。研究结果表明,研究形成的深水救援井井眼轨道设计基本方法可为国内深水救援井井眼轨道设计提供指导。
[Abstract]:There is neither standard nor practical design experience for reference in the design of deep water well trajectory in China. Therefore, starting with the implementation of the conditions of the rescue well, The selection chart of well head position and the position selection principle of connected point (target point) of deep water rescue well are worked out. Four kinds of commonly used borehole tracks, such as "J" shape, parallel close connected form, direct connected form and passing through pass-byform, are compared and analyzed. It is considered that traversing the pass-by) orbit has great advantages in expanding the detection range and improving the positioning accuracy. Therefore, it is regarded as the first stage of the borehole track in deep water rescue, and it is divided into four stages: approaching, ranging and locating, tracking, following and connecting. The key design factors such as tangent angle, well spacing and other key design elements in each stage are studied. It is determined that the maximum slant angle of the borehole track is less than 60 掳and the dog leg degree is not more than 3 掳/ 30 m. The basic design method of the deep water rescue borehole track is formed. This method is used to design the borehole track of a deep water rescue well in the offshore block of China Sea Oil. The results show that the basic method of deep water rescue well trajectory design can provide guidance for deep water rescue well trajectory design in China.
【作者单位】：中海油研究总院;
【基金】：国家科技重大专项“深水钻完井工程技术”(编号:2011ZX05026-001)部分研究内容
【分类号】：TE52

【相似文献】