Analysis and evaluation for the bearing capacity of derrick which thigh bundled drill-pipe

Based on the CNPC company management requirements and engineering security needs to solve the purpose of testing and evaluating the thigh bind drill tower type derrick capacity;employ the conventional field derrick stress strain method and the finite element simulation method;by analysis and testing through bind drill pipe stress strain and thigh bind drill derrick and original derrick carrying capacity,Drawing conclusion which bind drill pipe has strengthen the stability performance of derrick leg,According to the existing derrick capacity test method,on the basis of the 1997 version of the evaluation standard of thigh bind drill tower type derrick carrying capacity evaluation is scientific and reasonable.