西南石油大学学报(自然科学版)

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Monitoring and Intensity Analysis of Structural Stress of Electric#br# Rig Step-moving

Tao Yun1, Tan Gangqiang1, Wang Junpu2*, Ni Chao3, Wan Fu2   

  1. 1. Chuanqing Drilling Engineering Co. Ltd Equipment Division,Chengdu,Sichuan 610051,China
    2. CDEC Safty Enviroment Quality Supervision Testing Reserch Institute,Guanghan,Sichuan 618300,China
    3. CDEC Western Sichuan Drilling Company,Chengdu,Sichuan 610051,China
  • Online:2015-12-01 Published:2015-12-01

Abstract:

The step-moving can realize the all-round moving of rigs with the feature of fast moving and convenient operation,
so it is widely applied in cluster wells. In order to understand if the in-service electric rig installed with step-moving device can
settle the problem of rig all-round moving with full stand,a structural stress monitoring and test of rig moving is carried out. In
this paper,a ZJ50DBS rig of CDEC is the research subject,finite element analysis is adopted to identify parts of the rig structure
bearing larger force when lifting,and regard them as the stress monitoring points. Then the rig moving stress monitoring is done
in the condition of no stand. Based on the data analysis,strength check results are the target,and rig structure finite element
model is modified. Finally,the full stand load is applied to the modified rig model,and then stress is analyzed. The results
show that the rig after installation of step mobile device,is of sufficient strength to move at full stand condition.

Key words: electric rig, step-moving, stress monitoring, model correction, strength check

CLC Number: