深井钻机井架及底座系统的有限元静力分析  

Finite Element Static Analysis of Deep-well Rig Derrick and Substructure System

作　　者：陈新龙 周思柱[2] 华剑[2] 徐军 李建平 

机构地区：[1]中石化石油工程机械有限公司第四机械厂 [2]长江大学机械工程学院

出　　处：《石油机械》2013年第7期19-21,共3页China Petroleum Machinery

基　　金：湖北省重大科技专项"深井数字化电控钻机研制及产业化"(2011AAa001);湖北省自然科学基金项目"超深井石油钻机井架的振动机理及检测方法研究"(2012FFC00201)

摘　　要：在对钻机进行工况分析的基础上,通过命令流方式用ANSYS建立了ZJ70LDB钻机井架和底座的实体模型,并采用Beam188单元进行网格划分。针对最大钩载和最大转盘梁载荷这2种工况,对井架和底座系统进行了有限元静力分析,分析结果表明,最大钩载工况下的应力和位移均较大,最大位移为28.417 mm,发生在井架顶部,最大应力为205.061 MPa,位于井架下部与人字腿上方,但此处为钻机结构的薄弱环节,使用中应加以关注,以避免失效。On the basis of analyzing the operating condition of drilling rig, the ANSYS software was adopted to establish the solid model of the ZJ70LDB drilling rig derrick and substrueture through command stream. The Beam188 unit was adopted to eonduet mesh generation. The finite element analysis of the derrick and substructure system was eonducted with regard to the maximum hook load and the maximum rotary table beam load. It has been found that the stress and displacement are both remarkable under the maximum hook load operating condition. The maximum displacement is 28. 417 ram, taking place on the top of derrick. The maximum stress is 205.061 MPa, located at the lower part of derrick and above the herringbone leg, but this place is the weak position of drilling rig. Therefore, attention should be paid to in use of the rig in order to avoid failure.

关 键 词：深井钻机 井架 底座 位移 应力 有限元分析 

分 类 号：TE923[石油与天然气工程—石油机械设备]