井壁变形对底部钻具组合静力分析的影响  

EFFECTS OF DEFORMATION OF HOLE WALL ON STATICAL ANALYSIS OF BOTTOM-HOLE ASSEMBLIES

作　　者：蔡宗熙[1,2] 严宗达[1,2] 闫晓军[1,2] 曹锡玲[1,2] 唐志军[1,2] 

机构地区：[1]天津大学 [2]胜利油田管理局

出　　处：《天津大学学报》1994年第4期391-397,共7页Journal of Tianjin University(Science and Technology)

摘　　要：处理井壁与钻具组合接触问题时将井壁当作弹性体，建立了分析钻具组合的力学模型，并采用一种特殊的迭代方法解决由大位移及接触问题的双重非线性带来的困难，计算表明该法收敛较快．最后通过算例分析了井壁弹性模量对钻头处力及钻头指向的影响．reating the hole wall as an elastic body while considering the contact between bottom-hole assemblies and hole wall, we construct a model for the analysis of bottom-hole assemblies. The difficulties ccaused by the double nonlinearity of large deflection and contact is resolved by a particuiar iterative technique. nonlinearity show that the convergence speed of this iterative technique is fast. The effects of the Young's modules of hole wall on the force and the direction of bit are discussed in a numerical example.

关 键 词：钻具组合 接触 静力分析 井壁 变形 

分 类 号：TE21[石油与天然气工程—油气井工程]