Description

DTYJ hydraulic thruster is a new type of downhole bit pressure-exerting tool, which using the pressure drop of circular drilling fluid at bit nozzle to exert pressure to drilling bit, hereby realize accurate pressure-exerting and uniform drilling, without consuming any extra energy. The application of DTYJ hydraulic thruster can not only solve the problem of drilling pressure loss in horizontal wells, extended reach wells and slimhole wells, but also effectively control well deviation, damp&anti-bounce, improve the ROP, and extend bit’s life. It is a practical tool in oil-drilling process with low-cost, easy-operation and significant effect.

Main Functions:
1.Transform the pressure drop of bit nozzle or down-hole motor to drilling pressure and hold the drilling pressure consistent and uniform which can improve the ROP and service life.

2.Improve the strained condition of downhole motors, lower the neutral point of the BHA, enhance downhole motor’s stability and guidance quality, can hang and beat normally under heavy WOB, effectively control the well deviation and ensure quality of well bore.

3.When drilling under tough geologic condition or special formation(such as gravel layer), provide more significant effect of damp&anti-bounce, enormously extend the service life of drilling bit, downhole motor and ground equipments , reduce drilling cost and decrease occurrence of downhole accidents.



Main Technical Parameters
Model OD ID Working Stroke Piston Stage Connection Max. Load
mm in mm in mm in —— API KN
89 89 3-1/2″ 32 1-1/4″ 500 19-5/8″ 2 NC50 500
121 121 4-3/4″ 45 1-3/4″ 500 19-5/8″ 2 NC50 1000
165 165 6-1/2″ 45 1-3/4″ 500 19-5/8″ 2 NC50 1500
178 178 7″ 45 1-3/4″ 500 19-5/8″ 2 NC50 1800
203 203 8″ 71 2-3/4″ 500 19-5/8″ 2 6 5/8 REG 2000
229 229 9″ 71 2-3/4″ 500 19-5/8″ 2 7 5/8 REG 2500
242 242 9-1/2″ 71 2-3/4″ 500 19-5/8″ 2 7 5/8 REG 2500
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