压差式斜向器锚定结构分析

Analysis of Differential Pressure Whipstock Anchor Structure

利用井筒上部套管进行开窗侧钻是解决井下复杂事故与油田老区块二次开发的常用手段,可以减少重新钻井投入的费用。要实现开窗侧钻,需要斜向器与其锚定在井筒内的工具。介绍了一种压差式锚定结构的原理与组成,并对该结构进行了分析。现场应用证明这种结构的可行性,在其他井下工具中也有较好的应用前景。

The upper wellbore casing for sidetracking is used to solve complex accidents and oilfield old downhole block common means of secondary development,the cost of inputs re-drilling can be reduced. To achieve sidetracking needs whipstock anchored in the wellbore with the tool. A pres-sure-anchoring structure principle and structure,and the analysis of this structure are described. The practical application shows its feasibility and this structure is also in other downhole tool with good application prospect.