深斜井注水管柱下放力学模型研究  

Mechanical Model of Injection Line Setting in Deep Inclined Well

作　　者：张宏伟[1,2] 王希[2] 艾志久[2] 杨继军[1] 杨天成[1] 柴希伟 陈瑞[2] 

机构地区：[1]大港油田石油工程研究院 [2]西南石油大学

出　　处：《石油机械》2014年第12期102-105,110,共5页China Petroleum Machinery

基　　金：中石油天然气公司课题"深斜井分层注水工艺工作行为仿真及可靠性分析技术服务"(DGYT-2013-JS-62)

摘　　要：为了研究深斜井注水管柱的受力情况,在前人研究的基础上建立了适合于深斜井注水管柱下放的力学模型,综合考虑管柱自重、摩阻力及液压力的作用,计算了直径段、弯曲段和稳斜段管柱的摩阻力和轴向力,同时计算了各井段井口的大钩载荷;提出了管柱顺利下放的判定依据,分析了管柱下放的影响因素,并结合实例验证了计算方法的正确性。分析结果表明,弯曲段下放的管柱摩阻力随着井斜角和摩擦因数的增大而增大,管柱下放到稳斜段时摩阻力随着摩擦因数、井斜角、管柱规格的增大而增大;弯曲段管柱的钩载与下放深度呈非线性关系,随着管柱在弯曲段下放角度的增大,钩载逐渐减小,且摩擦因数越大,钩载减小幅度越大。In order to study the forces applied on injection pipe in deep inclined well, on the basis of previous studies, a suitable mechanical model for injection pipe in deep inclined well was established, considering the weight of the pipe, frictional resistance and fluid pressure. Friction resistance and axial load of the vertical section, curved section and angle holding section was calculated with the wellhead hook load of each well section; A judging basis for pipe setting was proposed with the influencing factors analyzed. The calculation method was proved to be accurate with engineering examples. The results show that the frictional resistance increased with a larger inclination angle, pipe size or friction factor in curved section; the relationship between hook load and pipe depth turned out to be non-line- ar, arid the hook load decrease much faster with bigger pipe setting angle and friction factor in curved section.

关 键 词：斜深井 注水管柱 力学模型 摩阻力 大钩载荷 

分 类 号：TE934[石油与天然气工程—石油机械设备]