1. Using heavy-load stable start and parking intelligent control technology, the braking force is automatically controlled with the running speed and acceleration of the lifting system.

2. The original rope flexible and non-destructive clamping technology of the flat tail rope is developed. The clamping chain linear conveying system is fully hydraulic driven and braked to realize the continuous retraction and retraction of the flat tail rope wellhead non-destructive clamping.

3. Develop the load dynamic compensation technology of the flat-tail rope change vehicle. Through the load-sensitive control system, according to the gravity change of the flat-tail rope, the operating parameters of the system are adaptively adjusted, so that the gravity of the flat-tail rope at the wellhead position can be balanced and retracted by itself, changing the downhole replacement operation method.