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US 9,540,881 B2Granted
Method and system for improving drilling speed by using drill speed vibration
AssigneeChina University of Petroleum (East China)
InventorsZhichuan Guan, Yongwang Liu, Wenzhong Wei, Ben Guan, Yucai Shi, Hongning Zhang
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Abstract
A system for improving a drilling speed by using drill string vibration comprises a downhole drill string vibration-reduction and supercharging device, and an ultra-high pressure bit device used for a downhole supercharger. Also disclosed is a method for improving a drilling speed by using drill string vibration. Related embodiments are also disclosed.
Claims13
A system for improving a drilling speed by using drill string vibration, the system comprising:
- a downhole drill string vibration-reduction and supercharging device, and an ultra-high pressure bit device used for a downhole supercharger;
- said downhole drill string vibration-reduction and supercharging device comprises a high-pressure runner;
- said ultra-high pressure bit device used for the downhole supercharger comprises an ultra-high pressure drilling fluid transmission runner;
- said ultra-high pressure drilling fluid transmission runner comprises an ultra-high pressure drilling fluid runner, a high-pressure resisting hose and a high-pressure resisting rigid tube;
- said high-pressure runner is connected to the ultra-high pressure drilling fluid runner;
- one end of said high-pressure resisting hose is connected to the ultra-high pressure drilling fluid runner, and the other end of said high-pressure resisting hose is connected to the high-pressure resisting rigid tube;
- and said high-pressure resisting rigid tube is connected to an ultra-high pressure drilling fluid nozzle.
4 more elements
A system for improving a drilling speed by using drill string vibration, the system comprising:
- a power source that generates power by bit pressure fluctuation in a bit body;
- wherein the system is configured such that drilling fluid enters into a lumen in a downhole drill string vibration-reduction and supercharging device after being shunt by a shunt mechanism, most part of the drilling fluid is injected via an ordinary pressure nozzle;
- other small part of the drilling fluid enters into a power conversion unit via an inlet one-way valve in the downhole drill string vibration-reduction and supercharging device;
- after obtaining the power source and high energy coming from reducing a fluctuation amplitude of bit pressure, the small part of the drilling fluid is discharged via an outlet one-way valve connecting a high-pressure runner and is finally injected by a ultra-high pressure drilling fluid nozzle to realize an ultra-high pressure jet which facilitates rock cracking directly or auxiliarily;
- the power conversion unit is composed by a sealing assembly, a supercharging cylinder and a supercharging cylinder righting sleeve.
2 more elements
Dependencies are inferred from the claim text.