定向井小直径管下入深度研究  

Directional well depth research under the small diameter tube

作　　者：石平太[1] 付军[1] 李令喜[1] 

机构地区：[1]中海油能源发展股份有限公司工程技术分公司,天津市300452

出　　处：《科技风》2015年第6期77-78,共2页

摘　　要：在油田使用小直径管测试作业中,求解连续油管的最大下入深度问题时,必须满足最大抗拉强度条件、摩擦阻力条件和屈曲变形条件及其确定的方法和原则。而在下入过程中摩擦综合阻力又是求解的关键。小直径钢管的刚度小,在承受纵向压力载荷时易发生正弦形、螺旋形弯曲(失稳),因而难以承受有效地压力载荷。本文讨论了小直径钢管在受压缩载荷时发生正弦和螺旋形弯曲的条件,同时,在定向井中,采用迭代算法求解下入的最小深度和上提拉力的问题。计算结果表明,连续油管的下入深度可满足侧钻水平井冲砂工艺要求。Using smal diameter tube test operations solving the problem of the maximum running depth of coiled tubing, must meet the maximum tensile condition, frictional condition and buckling condition of the method and principle in the oilfield. In the process of friction resistance is the key to solvethecomprehensive.Thesmal diametersteelpipestiffnessissmal,easilyhappeningunderthelongitudinalpressureloadsinusoid,spiralbending （buckling）.Itisdifficulttoeffectivelybearpressureloading.Thispaperdiscussesthesmal diametersteelpipeundercompressionloadoccurswhensineand spiral bending condition.At the same time, we calculatethe smal est depth and lift force using the iterative algorithmin the directional wel .The results showthatthedepthofcoiledtubingcansatisfytherequirementofsandwashingtechnology.

关 键 词：小直径管 测试 下入深度 

分 类 号：O346.2[理学—固体力学]