基于概率的分析的密集丛式井组造斜窗口确定方法.pdfVIP

基于概率分析的基于概率分析的密集丛式井密集丛式井组造斜窗口组造斜窗口确定确定方法方法 基于概率分析的基于概率分析的密集丛式井密集丛式井组组造斜窗口造斜窗口确定确定方法方法 胡中志 徐小峰 侯怡 李然 沈园园 潘俊英 （冀东油田公司钻采工艺研究院，河北.唐山，063004 ） 摘摘 要：要：造斜点深度分配是决定密集丛式井组整体防碰设计效果的关键因素之一，而造斜点深度选择范围即造斜窗口 摘摘 要要：： 是合理分配造斜点的前提。为此，从概率分析的角度，分析了南堡油田 152 口上直段较长井 （900m 以内设计为直井 段）的实钻井眼轨迹数据，得出了上直段水平位移偏差随井深的变化规律，建立了上直段水平位移偏差概率分析模 型，形成了一种可以确定密集丛式井组造斜窗口的方法。通过在南堡 1-3 人工岛密集丛式井组设计与施工中的应用， 证明该方法可以为南堡油田密集丛式井组轨道设计提供相对合理的造斜窗口。 关键词关键词：密集： 丛式井组；造斜窗口；防碰；概率分析；水平位移偏差；南堡 1-3 人工岛 关键词关键词：： 中图分类号：TE921 文献标识码：A Method for determining the kick off window of dense cluster well group based on probability analysis HU Zhongzhi HOU Yi XU Xiaofeng LI Ran SHEN Yuanyuan PAN Junying （Research Institute for Production Technology, Jidong Oilfield, Tangshan 063004, Hebei ） Abstract: The depth distribution of kick off points is one of the key factors to determine the anti-collision design effect of the dense cluster well group, while its depth range- kick off window is the premise of a rational allocation. To this end, analyzed the trajectory of 152 wells which designed with long vertical section (close to 900 meters ), obtained its horizontal displacement deviation, established its probability model, formed a method which can be used to determine the kick off window of dense cluster well group. Through the design and drilling in NP1-3 manmade island which with dense cluster well group, the method be proven that it can provides a relatively reasonable kick off window to NP Oilfield with dense cluster well group. Key words: dense cluster well group; kick off window; anti-collision; probability analysis; deviation of horizontal displacement; NP1-3 manmade island 南堡滩海油田主要利用陆岸终端和人工岛实施大位移、大斜度定向井和水平井来实现海油陆采， 一般设计采用建设密集丛式井组的方式来提高地面利用效率，降低综合开发成本[1-2]，井口距离一般 小于 4m，导致防碰设计和施工难度较大。为预防密集井口井眼轨迹碰撞及提高井口的利用率，必须