Ground testing device for stabilized platform of rotary steerable drilling tool

Patent metadata

Field	Value
Publication number	US-11879817-B2
Application number	US-202318242684-A
Country	US
Kind code	B2
Filing date	Sep 6, 2023
Priority date	Apr 26, 2023
Publication date	Jan 23, 2024
Grant date	Jan 23, 2024

Abstract

The present invention belongs to the technical field of oil field drilling, and relates to a ground testing device for a stabilized platform of a rotary steerable drilling tool. The ground testing device includes: a first supporting member and a second supporting member that are oppositely arranged, where the second supporting member is provided with a first mounting hole; a drill collar and a drill collar motor mounted outside the first supporting member, where a motor shaft of the drill collar motor penetrates the first supporting member and is connected to the drill collar, and a stabilized platform mounting assembly is arranged inside the drill collar; and a first vibration member connected to the drill collar and a second vibration member arranged in the first mounting hole in a sleeved manner, where an elastic member is arranged between the second vibration member and the second supporting member, and the elastic member is arranged on the second vibration member in a sleeving manner. An end portion of the first vibration member is provided with first vibration teeth, an end portion of the second vibration member is provided with second vibration teeth matching the first vibration teeth, and the second vibration member is provided with a first stop member which matches a second stop member arranged in the first mounting hole. According to the present invention, vibration, interference loading, and high-temperature simulation can be performed, and ground tests of different types of mechanical stabilized platforms are achieved.

First claim

What is claimed is:

1. A ground testing device for a stabilized platform of a rotary steerable drilling tool, comprising a drill collar assembly, wherein the drill collar assembly comprises a drill collar and a drill collar motor, and a stabilized platform mounting assembly is arranged inside the drill collar for mounting the stabilized platform; the ground testing device further comprises:
a first supporting member, wherein the drill collar motor is mounted outside the first supporting member, and a motor shaft of the drill collar motor penetrates the first supporting member and is connected to the drill collar;
a second supporting member arranged opposite the first supporting member and provided with a first mounting hole; and
a vibration mechanism comprising a first vibration member connected to the drill collar and a second vibration member arranged in the first mounting hole in a sleeved manner, wherein an elastic member is arranged between the second vibration member and the second supporting member, the elastic member is arranged on the second vibration member in a sleeving manner, an end portion of the first vibration member is provided with first vibration teeth, an end portion of the second vibration member is provided with second vibration teeth matching the first vibration teeth, in a rotation process of the drill collar, the second vibration teeth are separated from the first vibration teeth and meshed with the first vibration teeth under an action of the elastic member, so as to automatically open and close to generate vibration, and the second vibration member is provided with a first stop member which matches a second stop member arranged in the first mounting hole, so as to prevent the second vibration member from rotating around an axis of the drill collar when moving in an axial direction of the drill collar.

2. The ground testing device for a stabilized platform of a rotary steerable drilling tool according to claim 1 , further comprising an interference loading assembly, wherein the interference loading assembly comprises a pressurizing member mounted on a side wall of the drill collar and a friction member mounted on the stabilized platform, one end of the pressurizing member is in close contact with the friction member to generate interference torque, and the pressurizing member is in threaded connection to the drill collar and moves in a radial direction of the drill collar during rotation.

3. The ground testing device for a stabilized platform of a rotary steerable drilling tool according to claim 1 , wherein the stabilized platform mounting assembly comprises a first mounting member, a stabilized platform main body is mounted inside the first mounting member, and a side wall of the first mounting member is provided with a heating device so as to simulate a downhole high-temperature environment.

4. The ground testing device for a stabilized platform of a rotary steerable drilling tool according to claim 3 , wherein the stabilized platform mounting assembly further comprises a second mounting member, a third mounting member, and a fourth mounting member that are separately and detachably connected to an end portion of the first mounting member, the second mounting member is provided with a first through hole, and the third mounting member is provided with a second through hole;
when a single-motor stabilized platform is tested, the second mounting member or the third mounting member is mounted at one end of the first mounting member, and the fourth mounting member is mounted at the other end of the first mounting member; a single-motor stabilized platform driving motor is arranged on the side, far away from the first mounting member, of the second mounting member or the third mounting member, and a motor shaft of the single-motor stabilized platform driving motor penetrates the first through hole or the second through hole and is connected to the single-motor stabilized platform;
when a double-turbine generator stabilized platform is tested, the second mounting member is arranged at one end of the first mounting member, and the third mounting member is arranged at the other end of the first mounting member; an upper turbine generator rotor driving motor is arranged on the side, far away from the first mounting member, of the second mounting member, and a motor shaft of the upper turbine generator rotor driving motor penetrates the first through hole and is connected to an upper turbine generator so as to drive the upper turbine generator; and a lower turbine generator rotor driving motor is arranged on the side, far away from the first mounting member, of the third mounting member, and a motor shaft of the lower turbine generator rotor driving motor penetrates the second through hole and is connected to a lower turbine generator so as to drive the lower turbine generator.

5. The ground testing device for a stabilized platform of a rotary steerable drilling tool according to claim 4 , further comprising a control unit, wherein the control unit comprises a main controller, a driving controller and a measurement unit, the driving controller comprises an upper turbine generator driving controller for driving the upper turbine generator to rotate and a lower turbine generator driving controller for driving the lower turbine generator to rotate, the measurement unit comprises an upper current sensor for measuring a current of the upper turbine generator, a lower current sensor for measuring a current of the lower turbine generator, a tool face angle measurement unit for measuring a tool face angle, a voltage sensor for measuring a bus voltage, and a rotating speed sensor for measuring a rotating speed of the lower turbine generator, and the main controller provides current set values for the upper turbine generator driving controller and the lower turbine generator driving controller respectively according to measurement data of the upper current sensor, measurement data of the lower current sensor, measurement data of the voltage sensor, measurement data of the rotating speed sensor, measurement data of the tool face angle measurement unit, a tool face angle set value, a direct current bus voltage set value and external working condition information so as to adjust electromagnetic torque of the upper turbine generator and the lower turbine generator.

6. The ground testing device for a stabilized platform of a rotary steerable drilling tool according to claim 5 , wherein the main controller comprises:
a stabilized platform controller configured to: receive the direct current bus voltage set value V* and the tool face angle set value φ*, dynamically adjust a set value {tilde over (V)}* of a bus voltage controller and a set value {tilde over (φ)}* of a tool face angle controller according to the external working condition information, the measurement data of the upper current sensor, the measurement data of the lower current sensor, the measurement data of the voltage sensor, the measurement data of the rotating speed sensor and the measurement data of the tool face angle measurement unit, and provide a correction amount {tilde over (ω)} to a rotating speed controller to correct the rotating speed controller;
the bus voltage controller configured to: dynamically adjust the current set value of the upper turbine generator driving controller according to the set value {tilde over (V)}* and the measurement data of the voltage sensor so as to adjust the electromagnetic torque of the upper turbine generator;
the tool face angle controller configured to: dynamically adjust the set value of the rotating speed controller according to {tilde over (φ)}* and a tool face angle measurement value obtained by means of the tool face angle measurement unit; and
the rotating speed controller configured to: dynamica

Assignees

• Univ China Petroleum

Inventors

• Wang Weiliang
• Geng Yanfeng
• Sheng Li
• Tian Jinming
• Li Minglei

Classifications

• G01M7/025 Primary

  Measuring arrangements · CPC title

• G01M7/022 Primary

  Vibration control arrangements, e.g. for generating random vibrations · CPC title

• G01M7/045

  in a circular direction · CPC title

• E21B7/04

  Directional drilling · CPC title

• G01M13/00

  Testing of machine parts · CPC title