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A contact-type over-the-wire motor conversion and cancellation assembly and an electrical signal transmission method

A contact and assembly technology, which is applied in the direction of rotating collectors, connections, circuits, etc., can solve the problems of excessive pressure difference and sealing reliability without considering the conversion and offset assembly, affecting the service life of the motor passing the line, etc., to achieve internal and external The effect of consistent pressure and ensuring sealing reliability

Active Publication Date: 2022-05-24
BC P INC CHINA NAT PETROLEUM CORP +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The method of transmitting electrical signals inside the conversion and offset assembly in the prior art does not consider the excessive pressure difference between the inside and outside of the conversion and offset assembly when the conversion and offset assembly is working, and the use of static sealing to solve the sealing reliability of the axial displacement of the spool. , is bound to affect the service life of the line motor

Method used

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  • A contact-type over-the-wire motor conversion and cancellation assembly and an electrical signal transmission method
  • A contact-type over-the-wire motor conversion and cancellation assembly and an electrical signal transmission method
  • A contact-type over-the-wire motor conversion and cancellation assembly and an electrical signal transmission method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] like Figure 1-5 As shown, a wire-passing motor drilling tool of this embodiment is shown. Including the conversion offset assembly 1 connected to the stator and rotor power joint assembly 2;

[0048] Wherein, the conversion and cancellation assembly 1 includes: a cancellation shaft and a radial displacement device 12, located on the axis of the conversion and cancellation assembly 1, one end of which is connected to the motor rotor 15 of the stator and rotor power joint assembly 2, and the other One end is connected to the rotary variable static output device 11;

[0049] The offset shaft and radial displacement device 12 include:

[0050] The limit protection sleeve 101 is connected to the motor rotor 15, and a freely retractable elastic sealing cable 102 is arranged in it;

[0051]The displacement support shaft 104, the two ends of which are electrically connected to the conductor in the flexible metal tube 105 and the elastic sealing cable 102 respectively;

[0...

Embodiment 2

[0068] see Figure 6-7 , this embodiment provides a contact-type wire-crossing motor conversion and cancellation assembly and an electrical signal transmission method. It uses mutual contact to achieve electrical signal conduction and transfers the electrical signal rotating along the fixed axis to the fixed output end.

[0069] In view of the above problems, the contact-type over-the-wire motor conversion and offset assembly provided in this embodiment includes:

[0070] The positioning mandrel 201 is arranged along the axis of the conversion and cancellation assembly 1 through a sliding bearing 202, and one end thereof is provided with a first contact conductive structure, and the first contact conductive structure is electrically connected to the conductor passing through the motor rotor 15;

[0071] The sealing sheath 210 is provided with a second contact conductive structure in electrical contact with the first contact conductive structure, and one end of the second cont...

Embodiment 3

[0091] like Figure 8 As shown, this embodiment provides a separate wire-passing motor conversion and cancellation assembly and an electrical signal transmission method.

[0092] A separate wire-passing motor conversion and cancellation assembly of this embodiment includes:

[0093] The positioning mandrel 201 is arranged along the axis of the conversion and cancellation assembly 1 through a sliding bearing 202, and one end thereof is connected to a conductive transmission mandrel 217 through an insulating sleeve 216, and a conductor is arranged therein to electrically connect the transmission mandrel 217 and the conductors passing through the motor rotor 15;

[0094] The conduction housing 219 is electrically connected to the signal pairing connector 215 and forms a conductive cavity with the transmission mandrel 217 , and the conductive cavity is filled with conductive liquid.

[0095] As an implementation manner of this embodiment, a positioning bearing 218 is disposed in...

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Abstract

The invention relates to a conversion and cancellation assembly of a contact type wire-passing motor and an electric signal transmission method. The contact-type over-the-line motor conversion and offset assembly includes: a positioning mandrel, which is arranged along the axis of the conversion and offset assembly through a sliding bearing, and a first contact-type conductive structure is arranged at one end of the first contact-type conductive structure. The first contact-type conductive structure is electrically connected to the A conductor passing through the motor rotor; a sealing sheath, in which a second contact-type conductive structure in electrical contact with the first contact-type conductive structure is arranged, and one end of the second contact-type conductive structure is electrically connected to the signal butt joint. In the invention, the slip ring cap of the metal contact slip ring is rotated, the slip ring seat is fixed, and the end surfaces of the two are in contact with conduction. In order to ensure reliable conduction, an elastic force is applied to the slip ring seat in the axial direction, thereby adopting a set of metal contact slip rings. Converts a rotating output of a flexible metal tube to a fixed output.

Description

technical field [0001] The invention relates to a conversion and cancellation assembly and a transmission method, belonging to the technical field of petroleum exploration, in particular to a contact-type over-the-wire motor conversion and cancellation assembly and an electrical signal transmission method. Background technique [0002] When performing geosteering operations in the field of petroleum exploration, the downhole drilling tool assembly equipped with the wire-passing motor consists of the drill bit, the measuring sub, the wire-passing motor, and the transmission sub-joint from bottom to top. The connection of the wire-passing motor , so that the measurement sub for measuring downhole engineering and geological parameters is moved to the lower end of the over-the-line motor to connect with the drill bit, so that the installation can measure the trajectory and geological parameters of the drill bit as soon as possible, which is beneficial to improve the rate of reser...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01R39/08H01R39/02H02K5/22H02K5/10
CPCH01R39/08H01R39/02H02K5/225H02K5/10
Inventor 王磊盛利民艾维平彭烈新贾衡天滕鑫淼毛为民禹德洲陈文艺曹冲樊懿锋
Owner BC P INC CHINA NAT PETROLEUM CORP
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