On-line Detection of Derrick Capacity and Hook Load Monitoring

Drilling rig derricks often have problems like corrosion, wear and sudden increase of load. Therefore, it is necessary to integrate the automatic detection of derrick load capacity with the hook-load monitoring to improve the safety of drilling and workover operations. By analyzing the calculation method of derrick capacity and the existing hook-load detection technology, an integrated technical solution is proposed. The proposed solution, taking computer as the core, collects strain data with single-chip microcomputer and transmits data by wireless Wifi to evaluate the derrick capacity, and simultaneously control the hook load by monitoring real-time hook load data. The key technologies of derrick capacity detection and calculation, wireless node design and hook-load monitoring are discussed in detail. The hardware and software systems and micro-well derricks are established according to the design scheme. Simulation tests are carried out on the universal testing machine. The test results show that the designed hardware and software systems are running normally, the coordination between the subsystems is good, and the design scheme is feasible. The study has practical significance for the safety of drilling rig.