Anti-collision protective device and method for drilling top drive and derrick racking platform

Abstract

The invention relates to an anti-collision protective device and method for a drilling top drive and a derrick racking platform. Hang ring position detecting switches are installed at the forerake position and the hypsokinesis position of a top drive hang ring respectively, and a hang ring suspension detecting switch is arranged in the middle suspension position to judge the position state of the top drive hang ring. An encoder is installed on a winch and can output multiple pulse records when a roller on the winch is rotated by a circle; a central control unit indicates the height of the top drive in a derrick according to the pulse number recorded by the encoder, the position of the top drive hang ring and the height of the top drive are processed and compared in the central control unit to achieve collision prevention of the racking platform position. The anti-collision protective device has the advantages that the independent top drive and the winch are systematically and organically combined together, defects of respective designs are overcome, safety of equipment operation is greatly improved, and the situation that the top drive hang ring collides with the racking platform due to human errors and other serious related accidents caused by collision is effectively prevented.

Description

technical field [0001] The invention relates to a petroleum drilling equipment, in particular to an anti-collision protection device and method for a drilling top drive and a second floor platform of a derrick. Background technique [0002] Top drive is the cutting-edge technology and equipment of today's oil drilling. It can complete various drilling operations such as drill string rotary drilling, drilling fluid circulation, single root connection, make-up and breakout, and back reaming. Now various types of drilling rigs are becoming more and more popular. Many top drives are equipped with top drives, and the main structures and working principles of various top drives are the same. Although the functions of the top drive are very powerful, there is a big safety hazard in the drilling construction: the top drive does not need to be used when tripping. Stop and repeat the process of forward tilting, backward tilting and suspension (middle position) of the lifting ring, and...

AI Technical Summary

Problems solved by technology

Once this kind of problem occurs, it will cause very serious consequences. The top drive and the second-story platform will be directly damaged, and the operators on the second-story platform will be injured. The location of the second-story platform is about 26 meters high. Falling objects threaten the wellhead staff, and indirectly affect all aspects of drilling construction

This kind of serious safety hazard has a high probability of occurrence, and the reliability of manual protection by operators alone is too poor, resulting in high pressure and mental stress

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