Rotary steering drilling apparatus

Patent metadata

Field	Value
Publication number	US-2022251908-A1
Application number	US-202117416217-A
Country	US
Kind code	A1
Filing date	Mar 22, 2021
Priority date	Feb 8, 2021
Publication date	Aug 11, 2022
Grant date	—

Abstract

Disclosed is a rotary steering drilling apparatus. The rotary steering drilling apparatus includes a plurality of cylinders that are fixedly connected in series, wherein at least a part of adjacent cylinders are in power connection via a power connection unit; the power connection unit includes a first electrical connecting assembly and a second electrical connecting assembly, the cylinder in power connection is provided with a first electrical connecting assembly at one end and a second electrical connecting assembly at the other end, the adjacent cylinders are in power connection via the first electrical connecting assembly and the second electrical connecting assembly, and the first electrical connecting assembly and the second electrical connecting assembly on the same cylinder are in power connection; the first electrical connecting assembly includes a first electrical connecting ring which is arranged annularly, and the first electrical connecting ring includes a plurality of first conducting regions and first insulating regions which are distributed circumferentially and are spaced apart; and the second electrical connecting assembly includes a second electrical connecting ring which is arranged annularly, and the second electrical connecting ring includes a plurality of second conducting regions and second insulating regions which are spaced apart. The rotary steering drilling apparatus according to the present application can achieve multi-path power connection between adjacent cylinders and has the advantages of being convenient to mount, high in conductivity reliability and the like.

First claim

1 . A rotary steering drilling apparatus, comprising:
a plurality of cylinders connected in series, wherein each of the cylinders is fixedly connected to the adjacent cylinders, at least part of the adjacent cylinders are in power connection via a power connection unit, and the power connection unit is insulated from the cylinders; the power connection unit comprises a first electrical connecting assembly and a second electrical connecting assembly, the cylinder in power connection via the power connection unit is provided with a first electrical connecting assembly at one end and a second electrical connecting assembly at the other end, the adjacent cylinders are in multi-path power connection via the first electrical connecting assembly and the second electrical connecting assembly, and the first electrical connecting assembly and the second electrical connecting assembly on the same cylinder are in power connection; the first electrical connecting assembly comprises a first electrical connecting ring which is arranged annularly, and the first electrical connecting ring comprises 2N+2 regions which are distributed circumferentially, wherein N is a positive integer greater than or equal to 1, a part of the regions are set as first conducting regions, the rest part of the regions are set as first insulating regions, and the first conducting regions and the first insulating regions are circumferentially spaced apart; and the second electrical connecting assembly comprises a second electrical connecting ring which is arranged annularly, the second electrical connecting ring comprises 2M+2 regions which are distributed circumferentially, wherein M is a positive integer greater than or equal to 1, a part of the regions are set as second conducting regions, the rest part of the regions are set as second insulating regions, and the second conducting regions and the second insulating regions are circumferentially spaced apart.

2 . The rotary steering drilling apparatus according to claim 1 , wherein
the power connection unit further comprises a transitional electrical connecting ring which is arranged annularly, the transitional electrical connecting ring comprises a plurality of circumferentially spaced third conducting regions and third insulating regions, the transitional electrical connecting ring is arranged between the first electrical connecting ring and the second electrical connecting ring, the first electrical connecting ring and the transitional electrical connecting ring are in multi-path power connection via a plurality of conducting metal rolling bodies, and/or the second electrical connecting ring and the transitional electrical connecting ring are in multi-path power connection via a plurality of conducting metal rolling bodies, and the first electrical connecting ring and the second electrical connecting ring are in multi-path power connection via the transitional electrical connecting ring and the conducting metal rolling bodies; or the power connection unit further comprises a transitional electrical connecting ring which is arranged annularly, the transitional electrical connecting ring comprises a plurality of circumferentially spaced third conducting regions and third insulating regions, the two transitional electrical connecting rings are arranged between the first electrical connecting ring and the second electrical connecting ring, the first electrical connecting ring is in multi-path power connection to one side of one transitional electrical connecting ring which is oppositely adapted to the first electrical connecting ring, the second electrical connecting ring is in multi-path power connection to one side of the other transitional electrical connecting ring which is oppositely adapted to the second electrical connecting ring, the two transitional electrical connecting rings are in multi-path power connection via conducting metal rolling bodies, and the first electrical connecting ring and the second electrical connecting ring are in multi-path power connection via the two transitional electrical connecting rings and the conducting metal rolling bodies.

3 . The rotary steering drilling apparatus according to claim 2 , wherein
in a structure where the first electrical connecting ring and the transitional electrical connecting ring are in multi-path power connection via a plurality of conducting metal rolling bodies, a first limiting groove adapted to the conducting metal rolling bodies is arranged on the first conducting region or on the third conducting region opposite to the first conducting region, and the metal rolling bodies are partially located in the first limiting groove and enable the first electrical connecting ring to be in multi-path power connection to the transitional electrical connecting ring; and in a structure where the second electrical connecting ring and the transitional electrical connecting ring are in multi-path power connection via a plurality of conducting metal rolling bodies, a second limiting groove adapted to the conducting metal rolling bodies is arranged on the second conducting region or on the third conducting region opposite to the second conducting region, the metal rolling bodies are partially located in the second limiting groove and enable the second electrical connecting ring to be in multi-path power connection with the transitional electrical connecting ring.

4 . The rotary steering drilling apparatus according to claim 2 , wherein
in a structure where the first electrical connecting ring and the transitional electrical connecting ring are in multi-path power connection via a plurality of conducting metal rolling bodies, a central angle corresponding to the third conducting region is larger than a central angle corresponding to the third insulating region, a distance between contact positions of two adjacent conducting metal rolling bodies and the transitional electrical connecting ring is greater than a thickness of the third insulating region in a circumferential direction, and one of the first conducting regions is in power communication with the plurality of third conducting regions via the plurality of conducting metal rolling bodies; and in a structure where the second electrical connecting ring and the transitional electrical connecting ring are in multi-path power connection via a plurality of conducting metal rolling bodies, a central angle corresponding to the third conducting region is larger than a central angle corresponding to the third insulating region, a distance between contact positions of two adjacent conducting metal rolling bodies and the transitional electrical connecting ring is greater than a thickness of the third insulating region in a circumferential direction, and one of the second conducting regions is in power communication with the plurality of third conducting regions via the plurality of conducting metal rolling bodies.

5 . The rotary steering drilling apparatus according to claim 4 , wherein
the first conducting regions and the first insulating regions on the first electrical connecting ring are set as fan-shaped circular ring structures and are uniformly distributed, and a central angle corresponding to the first conducting region is larger than or equal to a central angle corresponding to the first insulating region; and the second conducting regions and the second insulating regions on the second electrical connecting ring are set as fan-shaped circular ring structures and are uniformly distributed, and a central angle corresponding to the second conducting region is larger than or equal to a central angle corresponding to the second insulating region.

6 . The rotary steering drilling apparatus according to claim 5 , wherein
the first electrical connecting ring comprises two first conducting regions, and th

Assignees

• Inst Geology & Geophysics Cas

Inventors

• Xie Qijun
• Di Qingyun
• Liu Qingbo
• Yang Yongyou
• Hong Linfeng
• Wang Xiangyang

Classifications

• E21B7/04

  Directional drilling · CPC title

• E21B17/028 Primary

  Electrical or electro-magnetic connections · CPC title

• H01R39/643

  through ball or roller bearing · CPC title

• E21B7/06

  Deflecting the direction of boreholes · CPC title

• E21B17/0285 Primary

  characterised by electrically insulating elements · CPC title