石油矿场机械
石油礦場機械
석유광장궤계
Oil Field Equipment
2015年
11期
30-33
,共4页
连续油管%椭圆度%直径增长%ANSYS%变形分析
連續油管%橢圓度%直徑增長%ANSYS%變形分析
련속유관%타원도%직경증장%ANSYS%변형분석
coiled tubing%ovality%diameter growth%ANSYS%deformation analysis
连续油管缠绕在滚筒上时,由于弯曲、内压及轴向拉伸等复合载荷作用,会产生直径增长、截面椭圆化等现象。采用 ANSYS 软件建立连续油管完全缠绕在滚筒上的三维有限元模型。在内压和轴向载荷作用下,对其绕弯状态进行了变形分析,得到了完全缠绕状态的连续油管截面塑性区分布。分析了内压及轴向载荷对连续油管直径变化率和椭圆度的影响。结果表明:内压是缠绕在滚筒上的连续油管直径增长的主要因素;当内压达到一定值时,椭圆度趋于稳定。
連續油管纏繞在滾筒上時,由于彎麯、內壓及軸嚮拉伸等複閤載荷作用,會產生直徑增長、截麵橢圓化等現象。採用 ANSYS 軟件建立連續油管完全纏繞在滾筒上的三維有限元模型。在內壓和軸嚮載荷作用下,對其繞彎狀態進行瞭變形分析,得到瞭完全纏繞狀態的連續油管截麵塑性區分佈。分析瞭內壓及軸嚮載荷對連續油管直徑變化率和橢圓度的影響。結果錶明:內壓是纏繞在滾筒上的連續油管直徑增長的主要因素;噹內壓達到一定值時,橢圓度趨于穩定。
련속유관전요재곤통상시,유우만곡、내압급축향랍신등복합재하작용,회산생직경증장、절면타원화등현상。채용 ANSYS 연건건립련속유관완전전요재곤통상적삼유유한원모형。재내압화축향재하작용하,대기요만상태진행료변형분석,득도료완전전요상태적련속유관절면소성구분포。분석료내압급축향재하대련속유관직경변화솔화타원도적영향。결과표명:내압시전요재곤통상적련속유관직경증장적주요인소;당내압체도일정치시,타원도추우은정。
Coiled tubing is wrapped in the roller,due to the internal pressure,bending and axial tension,diameter growth and cross-section ovalization will happen.In this paper,the 3D finite ele-ment model that coiled tubing is completely wrapped around the roller is set up throug h ANSYSand deformation is analyzed under internal pressure and axial tension,distribution of coiled tubing cross-section plastic zone is obtained.At the same time,it is concluded that the internal pressure and axial load exerted the influence on the diameter change rate and the ovality,the results showed that internal pressure is the main factor of coiled tubing diameter growth.When the inter-nal pressure reaches a certain value,the ovality tends to be stable.