石油钻井吊环设计及强度分析方法

Designing and Stiffness Analysis Method of Oil Drilling Lifting Bail

石油钻井吊环是石油钻采装备领域一种较为重要的井口工具,其设计时要求安全可靠、承载能力强,而若吊环大环端及小环端的危险截面的强度能达到设计要求,其它部位可不做材料力学性能要求。文中利用有限元分析方法对单臂吊环进行强度计算,分析吊环几个危险截面处的强度是否满足ASMEⅧ的强度校核准则,如不满足强度要求,则进行设计更改,使得更改后的吊环几个危险截面处的强度满足ASMEⅧ校核准则的强度要求。

Oil drilling lifting bail is one of important rig tool in the field of petroleum drilling equipment, safe reliability and big load capacity are necessary in its designing. If the hazardous area performance of big ring side and small ring side can conform design demand, then the others′ material behavior requirement are nonessential. The intensity calculation of single arm lifting bail is finished using finite element analysis, which analyzes the several dangerous sections′ intensity calibration of DH, whether the intensity calibration satisfy the ASME Ⅷ criterion or not. If the result does not satisfy the criterion, then the design will be restructured, so as to make the several dangerous sections′ intensity of the DH modified meet the requirement of ASMEⅧ criterion.