Hydraulic Propulsor

The hydraulic propulsor in between is connected to the downhole motor and mill shoes. There is a flow channel conversion device inside, and the flow channel change is through contact with the well plug and switches when pressurized. When the mill shoe do not contact with the bridge plug, the water hole of the mill shoe is in a bypass state, and the when the mill shoe contact with the bridge plug, the mill shoe flow channel is switched, and the fluid is ejected from the water hole at the top of the mill shoe, and the milling operation is carried out normally.

The advantages of this tool are:

1. When there is no obstacle in front of the BHA, the fluid can only be ejected from the bypass water hole at high speed, forming a relative negative pressure with the surrounding flow field. It is adsorbed to the back of the tool and flows to the wellhead along with the high-speed fluid.

2. After the wellbore is kept clean, it can greatly reduce the frictional resistance between the pipe strings, reduce the probability of sticking, and improve the efficiency of running the pipe strings.

3. When an obstacle is encountered in front of the BHA, through the change of the flow channel, the fluid will be ejected outward through the bypass water hole and the through water hole at the same time, and the mill shoe work at the lower part of the pipe string is started to remove the bottom hole obstacle. The resulting debris, gravel and other impurities will return in time and will not continue to accumulate.

4. When there is no obstacle in front of the BHA, the fluid can only be ejected from the bypass water hole at high speed, which can provide a forward hydraulic thrust, assist the running depth of the coiled tubing and the tool string, and improve the coiled tubing. ability to extend.

OD(mm)	Length(mm)	Flow Rate(LPM)	Work Pressure(MPa)	Switch Mode	Connection
73	270	150-560	70	Pressure/contact bridge plugs	2 3/8 PAC B*P