CN219570022U

CN219570022U - Non-perforation type antenna connection structure for near-bit geosteering tool

Info

Publication number: CN219570022U
Application number: CN202320492496.3U
Authority: CN
Inventors: 李宏; 王平; 杨林; 何宇翔
Original assignee: Shanghai Datan Energy Technology Co ltd
Current assignee: Shanghai Datan Energy Technology Co ltd
Priority date: 2023-03-15
Filing date: 2023-03-15
Publication date: 2023-08-22
Anticipated expiration: 2033-03-15

Abstract

The utility model relates to a non-perforated antenna connection structure for a near-bit geosteering tool, which relates to the field of petroleum exploitation tools, and comprises an upper joint and a near-bit body which are connected with each other; the outer ring of the near-bit body is provided with a copper ring which is electrically connected with an internal electronic module; a spring ring is connected between the upper joint and the copper ring. The utility model can be conveniently disassembled when the near-bit insulation needs to be maintained, and the maintenance cost is reduced; meanwhile, one seal is omitted, the risk of insulation failure caused by seal failure is reduced, and the reliability of the near-bit is improved.

Description

Non-perforation type antenna connection structure for near-bit geosteering tool

Technical Field

The utility model belongs to the field of drilling engineering in petroleum, coal mines and geological exploration, in particular to a petroleum exploitation tool, relates to a near-bit measurement-while-drilling communication system, and particularly relates to a non-perforated antenna connection structure for a near-bit geosteering tool.

Background

The near-bit measurement while drilling communication system consists of a power supply, a data processing circuit, a near-bit measuring instrument, a signal transmitting coil, an insulating ring, a signal receiving coil, a signal receiving instrument and the like; and (3) spraying an insulating material on the pin thread connected with the screw thread, and then utilizing an insulating ring to realize insulation between the upper joint and the near-bit body. Meanwhile, the electronic module in the body needs to be connected with the upper connector to realize communication. The existing communication link mode is a perforation communication mode, namely, a jackscrew mode is adopted on the male connector to realize communication.

The structure can realize signal connection, but when the insulation between the near bit body and the upper joint fails, the jackscrew can not be normally disassembled due to the damage of the wrench opening. When the special mode is adopted for disassembly, the threaded hole on the upper joint is easy to damage, so that the upper joint needs to be maintained, and the maintenance cost is increased. In addition, the perforation communication mode also needs sealing, which increases the risk of instrument failure.

Disclosure of Invention

The purpose of the utility model is that: the non-perforated antenna connection structure for the near-bit geosteering tool is provided, so that the near-bit geosteering tool can be conveniently disassembled when the near-bit is required to be maintained and insulated, and the maintenance cost is reduced.

In order to achieve the above object, the present utility model provides a non-perforated antenna connection structure for a near-bit geosteering tool, comprising an upper joint and a near-bit body connected to each other; the outer ring of the near-bit body is provided with a copper ring which is electrically connected with an internal electronic module; a spring ring is connected between the upper joint and the copper ring.

Preferably, the copper ring is arranged at the end part of the near-bit body.

Preferably, the coil is compressible.

Preferably, a cable connecting the copper ring and the electronic module is arranged in the near-bit body.

Preferably, an outer insulating ring and an inner insulating ring for isolating each other are arranged between the near bit body and the upper joint.

Preferably, first O-rings are arranged on two sides of the outer insulating ring and are respectively and correspondingly connected with the upper joint and the near-bit body.

Preferably, two ends of the inner insulating ring are provided with second O-shaped rings which are respectively and correspondingly connected with the upper joint and the near-bit body.

In summary, the utility model has the following beneficial technical effects:

the utility model does not use a perforation type communication mode any more, adopts a non-perforation type communication mode, and can be conveniently disassembled when the near-bit insulation needs to be maintained, thereby reducing the maintenance cost. Meanwhile, one seal is omitted, the risk of insulation failure caused by seal failure is reduced, and the reliability of the near-bit is improved.

Drawings

Fig. 1 is a schematic diagram of a prior art connection mode of a perforation type antenna;

fig. 2 is a schematic diagram of a non-perforated antenna connection structure for a near-bit geosteering tool in accordance with the present utility model.

Reference numerals: 1. a near bit body; 2. a copper ring; 3. a jackscrew; 4. an outer insulating ring; 5. an upper joint; 6. an inner insulating ring; 7. a first O-ring; 8. a second O-ring; 9. a third O-ring; 10. and (5) a spring ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The embodiment of the utility model discloses a non-perforated antenna connection structure for a near-bit geosteering tool, which comprises an upper joint 5 and a near-bit body 1 which are connected with each other; the outer ring near the end part of the drill bit body 1 is provided with a copper ring 2, and the copper ring 2 is electrically connected with an electronic module inside the drill bit body 1; the outer ring of the copper ring 2 is sleeved with a compressible spring ring 10, and the spring ring 10 is connected with the upper joint 5.

As shown in fig. 2, the compressible spring ring 10 for connecting the upper connector 5 with the antenna of the near-bit body 1 is used for communicating the upper connector 5 with the copper ring 2, and the copper ring 2 is connected with an electronic module inside the near-bit body 1 through a cable, so that the upper connector 5 is communicated with the electronic module inside the near-bit body 1.

An outer insulating ring 4 and an inner insulating ring 6 for isolating the near bit body 1 and the upper joint 5 are also arranged between the near bit body and the upper joint; the two sides of the outer insulating ring 4 are respectively provided with a first O-shaped ring 7 which is respectively correspondingly connected with the upper joint 5 and the near bit body 1; two ends of the inner insulating ring 6 are respectively provided with a second O-shaped ring 8 which is respectively correspondingly connected with the upper joint 5 and the groove near the drill bit body 1.

Finally, it should be noted that: the foregoing description of the preferred embodiments of the present utility model is not intended to be limiting, but rather, although the present utility model has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described, or equivalents may be substituted for elements thereof, and any modifications, equivalents, improvements or changes may be made without departing from the spirit and principles of the present utility model.

Claims

1. A non-perforated antenna connection structure for a near-bit geosteering tool, characterized by: comprises an upper joint (5) and a near-bit body (1) which are connected with each other; the outer ring of the near-bit body (1) is provided with a copper ring (2) electrically connected with an internal electronic module; a spring ring (10) is connected between the upper joint (5) and the copper ring (2).

2. A non-perforated antenna connection for a near-bit geosteering tool as defined in claim 1, wherein: the copper ring (2) is arranged at the end part of the near-bit body (1).

3. A non-perforated antenna connection for a near-bit geosteering tool as defined in claim 2, wherein: the spring ring (10) is compressible.

4. A non-perforated antenna connection for a near-bit geosteering tool as defined in claim 3, wherein: and a cable for connecting the copper ring (2) and the electronic module is arranged in the near-bit body (1).

5. A non-perforated antenna connection for a near bit geosteering tool as defined in any one of claims 1-4, wherein: an outer insulating ring (4) and an inner insulating ring (6) for isolating the near bit body (1) from each other are arranged between the near bit body (1) and the upper joint (5).

6. A non-perforated antenna connection for a near-bit geosteering tool as defined in claim 5, wherein: the two sides of the outer insulating ring (4) are provided with first O-shaped rings (7) which are respectively and correspondingly connected with the upper joint (5) and the near-bit body (1).

7. A non-perforated antenna connection for a near-bit geosteering tool as defined in claim 6, wherein: two ends of the inner insulating ring (6) are provided with second O-shaped rings (8) which are respectively and correspondingly connected with the upper joint (5) and the near-bit body (1).