Oil well casing tong torque monitoring automatic control system

Abstract

The invention relates to an oil well casing tong torque monitoring automatic control system. The system comprises an oil well casing tong torque meter main machine, a sensor and a structural piece, wherein the oil well casing tong torque meter main machine consists of an industrial personal computer and a slave computer; the industrial personal computer which is used as an upper computer is in communication connection with the slave computer is used as a lower computer; real-time acquisition and display of field data, data processing and report printing are integrated and buckling parameters are automatically stored; time change curves of torsion and cycles are simultaneously displayed on the same coordinate to ensure more intuitive construction conditions and an appropriate screwing torque value; a well type is automatically displayed according to input working parameters and the insertion positions of a casing are prompted; a manual and automatic switchover device is designed so as to improve system reliability and adapt to the operation habit of a worker; the problems of complex field installation and disassembly and inconvenience in carrying and the like are solved for a platform by an integrated box vehicle; and in the system, higher hardware configuration is adopted, the detection and control functions of the system are realized and space is reserved for the future development of the functions, and the system is convenient to carry and can be operated flexibly.

Description

technical field [0001] The invention relates to oil field drilling machinery monitoring equipment, in particular to an automatic control system for torque monitoring of oil well casing tongs. Background technique [0002] Casing operation is a very important link in the drilling process, and its operation quality directly affects the quality of casing thread connection, oil production and oil well life. At present, the casings used in China are relatively mixed, and the control screwing torque value is also different due to different sealing methods, sealing grease, pipe diameter specifications, steel grades and models, and arm thickness. If the screwing torque value is too high, the screw thread will be swollen or cracked. Excessive stress; too small will cause insufficient thread connection strength, resulting in poor sealing, etc. The structure of the existing oil well casing tong torque meter is usually as follows: 1. The pointer torque meter shows that relying ...

AI Technical Summary

Problems solved by technology

At present, the casings used in China are relatively mixed, and the control screwing torque value is also different due to different sealing methods, sealing grease, pipe diameter specifications, steel grades and models, and arm thickness. If the screwing torque value is too high, the screw thread will be swollen or cracked. Excessive stress; too small will cause insufficient thread connection strength, resulting in poor sealing, etc.

The structure of the existing oil well casing tong torque meter is usually as follows: 1. The pointer torque meter shows that relying on manual monitoring and recording of the screw-in torque value has a large error, and the screw-in torque is accurately controlled manually, and the operator must have certain experience. and proficient process to be competent

2. The single-chip digital display structure only displays and records the torque value and the number of buckle turns, and the screwing torque is controlled manually. The operator must have certain experience and proficiency in the process to be competent, and the degree of automation is low.

3. The multi-channel power supply structure of the upper and lower machines is complex and bulky, the corresponding relationship of the torque circle curve is not intuitive, and the failure rate is high

At present, there has not been an automatic control system for the torque monitoring of oil well casing tongs that can achieve real-time monitoring, real-time display corresponding to the hyperbola and computer management, and there is no report on this technical article in the literature.

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