Drillable adaptive turbine guide shoe

Patent metadata

Field	Value
Publication number	US-11326400-B2
Application number	US-202117211893-A
Country	US
Kind code	B2
Filing date	Mar 25, 2021
Priority date	Sep 15, 2020
Publication date	May 10, 2022
Grant date	May 10, 2022

Abstract

Disclosed is a drillable adaptive turbine guide shoe, including an adaptive booster component and a power casing shoe component; the adaptive booster component includes a supercharging hollow shaft, a supercharging shell, a disc spring group, a shunt head, a jet oscillator and a semi-cylindrical ring, the supercharging hollow shaft is slidably connected to the supercharging shell, one end of the supercharging hollow shaft is a liquid inlet end and the other end is closed, a cavity is formed between the supercharging hollow shaft and the supercharging shell, and the disc spring group is built in the cavity, the jet oscillator and the semi-cylindrical ring are mounted on the inner wall of the supercharging shell, and one side of the jet oscillator and the semi-cylindrical ring abuts against the shunt head, the shunt head is sleeved on the outer wall of the supercharging hollow shaft; this disclosure solves the problem that the casing cannot be effectively run when the wellbore has sand bridges or wellbore necking.

First claim

What is claimed is:

1. A drillable adaptive turbine guide shoe comprising an adaptive booster component and a power casing shoe component, wherein:
the adaptive booster component includes a supercharging hollow shaft, a supercharging shell, a disc spring group, a shunt head, a jet oscillator and a semi-cylindrical ring, the supercharging hollow shaft is slidingly connected to the supercharging shell, one end of the supercharging hollow shaft is a liquid inlet end and the other end is closed, a cavity is formed between the supercharging hollow shaft and the supercharging shell, the disc spring group is built in the cavity, and the jet oscillator and the semi-cylindrical ring is attached to the inner wall of the supercharging shell, and one side of the jet oscillator and the semi-cylindrical ring abuts against the shunt head, and the shunt head is sleeved on the outer wall of the supercharging hollow shaft, the shunt head is provided with a first shunt hole communicating with the jet oscillator, and the shunt head is provided with a second shunt hole communicating with the semi-cylindrical ring, the other side of the jet oscillator and the semi-cylindrical ring are in contact with the supercharging shell, when the supercharging shell is subjected to axial compression, the interior of the supercharging hollow shaft is connected to the liquid inlet end of the jet oscillator through the first shunt hole, and the second shunt hole is closed, when the supercharging shell is not subjected to axial compression force, the interior of the supercharging hollow shaft is connected to the interior of the semi-cylindrical ring through the second shunt hole, and the first shunt hole is closed;
the power casing shoe component includes a casing shell, a turbine shaft, a turbine stator, a turbine rotor and a guide shoe, the casing shell is in communication with the outlet end of the jet oscillator or the semi-cylindrical ring, the turbine shaft is built in the casing shell, the turbine shaft is rotationally connected to the casing shell, and the turbine rotor is sleeved on the turbine shaft, the turbine stator is attached to the inner wall of the casing shell, and the turbine stator and the turbine rotor are rotationally connected, a flow channel is formed between the turbine stator and the turbine rotor, the liquid inlet end of the flow channel communicates with the liquid outlet end of the supercharging shell, and the liquid outlet end of the flow channel is connected to the inside of the guide shoe, the guide shoe is connected to the turbine shaft at the end away from the supercharging shell.

2. The drillable adaptive turbine guide shoe according to claim 1 , wherein the supercharging shell includes a baffle ring, a moving sleeve and a moving shell, the baffle ring is sleeved on the supercharging hollow shaft, the baffle ring is slidingly connected to the supercharging hollow shaft, the baffle ring is threaded to one end of the moving sleeve, and the other end of the moving sleeve is threaded to the moving shell, the disc spring group is built into the moving sleeve, one end of the disc spring group abuts against the shoulder of the supercharging hollow shaft and the baffle ring, the other end of the disc spring group abuts against the shoulder of the moving sleeve, the shunt head is fixed to the supercharging hollow shaft by screws, and the shunt hole is connected with the interior of the supercharging hollow shaft, the jet oscillator and semi-cylindrical ring are both attached to the inner wall of the moving shell.

3. The drillable adaptive turbine guide shoe according to claim 1 , wherein the adaptive booster component also includes a fixed cover, one end of the fixed cover abuts against the shunt head, and the other end of the fixed cover abuts against the jet oscillator and the semi-cylindrical ring.

4. The drillable adaptive turbine guide shoe according to claim 1 , wherein the adaptive booster component further includes a spring, one end of the spring is fixedly connected to the jet oscillator and the semi-cylindrical ring, and the other end of the spring abuts against the inner wall of the supercharging shell.

5. The drillable adaptive turbine guide shoe according to claim 1 , wherein the casing shell in this embodiment includes a casing joint, a casing body and an end cover, one end of the casing joint is threadedly connected to the supercharging shell, the other end of the casing joint is threaded to one end of the casing body, the other end of the casing body is threaded to the end cover, the casing body is cylindrical, the turbine shaft is rotatably connected to the casing body, and the turbine stator is attached to the inner wall of the casing body, and the shoulder of the casing joint on the opposite side and the end cover abuts against the turbine stator.

6. The drillable adaptive turbine guide shoe according to claim 5 , wherein the turbine stator and the end cover are connected by a flow deflector, one end of the flow deflector abuts against the turbine stator, and the other end of the flow deflector abuts against the end cover, the flow deflector is provided with a deflector hole, the gap between the turbine stator and the turbine rotor is communicated with the guide shoe via the deflector hole.

7. The drillable adaptive turbine guide shoe according to claim 1 , wherein the power casing shoe component further includes a first limiting member, the first limiting member includes a fixed shaft shoulder, a centralizing bearing, and a first limiting sleeve, the fixed shaft shoulder is sleeved on the turbine shaft, the fixed shaft shoulder abuts on one end of the turbine rotor near the supercharging shell, and the centralizing bearing is sleeved on the turbine shaft to centralize the turbine shaft, the first limiting sleeve is fixed on the inner wall of the casing shell, and the first limiting sleeve abuts against one end of the turbine stator close to the supercharging shell.

8. The drillable adaptive turbine guide shoe according to claim 1 , wherein the power casing shoe component includes a second limiting member, the second limiting member includes a thrust bearing and a second limiting sleeve, the thrust bearing is sleeved on the turbine shaft, the thrust bearing abuts against the turbine rotor at the end away from the supercharging shell, the second limiting sleeve is fixed on the inner wall of the casing shell, and the second limiting sleeve abuts on the end of the turbine stator away from the supercharging shell.

9. The drillable adaptive turbine guide shoe according to claim 1 , wherein metal teeth are fixedly connected to the outer wall of the guide shoe.

10. The drillable adaptive turbine guide shoe according to claim 1 , wherein the outer wall of the guide shoe is provided with multiple sets of side flow holes communicating with the inside of the guide shoe, the multiple sets of side flow holes are evenly arranged along the circumference of the guide shoe, each set of side flow holes includes multiple side flow holes, the flow holes are arranged in sequence along the length of the guide shoe.

Assignees

• Univ Yangtze

Inventors

• Feng Ding
• Zhao Yu

Classifications

• E21B4/003

  Bearing, sealing, lubricating details (for roller bits E21B10/22) · CPC title

• E21B7/208 Primary

  using down-hole drives (E21B7/203 and E21B7/206 take precedence) · CPC title

• E21B17/14 Primary

  Casing shoes {for the protection of the bottom of the casing} · CPC title

• E21B7/28

  Enlarging drilled holes, e.g. by counterboring · CPC title

• E21B17/1078

  Stabilisers or centralisers for casing, tubing or drill pipes (E21B17/1007 - E21B17/1064 take precedence) · CPC title