CN219412527U

CN219412527U - Back totally-enclosed coring device

Info

Publication number: CN219412527U
Application number: CN202320936338.2U
Authority: CN
Inventors: 韩铁楠; 马骁; 汪洋; 张贵应
Original assignee: Beijing Huajian Machinery Manufacturing Co ltd
Current assignee: Beijing Huajian Machinery Manufacturing Co ltd
Priority date: 2023-04-23
Filing date: 2023-04-23
Publication date: 2023-07-25
Anticipated expiration: 2033-04-23

Abstract

The utility model relates to a back totally-enclosed corer, which is provided with a cylindrical metal main body, wherein the front part of the main body is provided with a row of circular grooves for installing a core barrel and the core barrel, the left side and the right side of the grooves for installing the circular core barrel are provided with connecting cable slots for the core barrel, the bottom of the grooves for installing the core barrel is provided with a igniting screw, the lower part of the igniting screw is provided with an inner through hole, the lower part of the corer body is axially communicated, a conductive wire for the igniting screw is arranged in the inner through hole, and the lower part of the inner through hole is provided with a sealing structure for the back, namely the axial rear side surface of the corer body. Front and rear threaded connectors are arranged at the front and rear ends of the main body. The back of the main body is provided with a left weight-reducing groove and a right weight-reducing groove. The utility model has the functions of dampproof and water leakage prevention, provides guarantee for ultra-deep well detection coring and high emissivity beating in high-temperature and high-pressure environments, and has the advantages of more compact and simple structure, greatly improved functions, lower cost, longer service life, small volume, convenient use and good safety performance.

Description

Back totally-enclosed coring device

Technical Field

The utility model relates to the technical field of prospecting equipment, in particular to a coring device for taking rock soil samples from a well wall after drilling for testing to judge a geological structure and geological components. Is the main coring equipment component for the installed core barrel (coring head) and the gunpowder-fired core barrel (coring head). The core remover is an improved back totally-enclosed core remover, can be widely applied to various geological core removing and sampling devices, and has the advantages of good emission effect, excellent core removing effect, simple structure, convenient use and strong safety performance.

Background

Petroleum exploration requires drilling wells in the formation, after which the cores of each formation are removed from the well wall for analysis. Coring from a formation is a very important work item and requires a coring device. The coring device in this apparatus is a very important component thereof. The structure of conventional, i.e., currently commonly used, coring devices has some drawbacks. The front part of the main body of the cylindrical coring device, namely the front side surface is provided with a row of coring heads and coring head connecting cables, a gunpowder cavity is arranged below the coring heads, and a igniting screw and an igniting wire are arranged below the gunpowder cavity. The wire of the ignition screw is put into from the back of the corer, namely the rear side of the corer, so that the back of the corer is arranged in an open structure, and the volume of the ignition screw is larger, so that the whole corer is larger, and the back of the corer is in an open structure, so that the traditional corer has the defects of: the whole sealing effect is poor, moisture penetration easily occurs into the corer under the high-temperature and high-pressure environment of a deep well, or underground water vapor and slurry are directly poured into the corer, so that the insulation inside the corer is reduced or even shorted out, the emissivity of the instrument is reduced or even completely disabled, and great difficulty and great loss are brought to petroleum logging work. The traditional old type coring device has the disadvantages of large volume, high manufacturing and processing difficulty, complex use, high cost, poor effect and lower safety performance. Therefore, technical improvements are urgently needed.

Disclosure of Invention

In order to solve the technical problems, the utility model provides a back totally-enclosed coring device, which adopts a novel igniting screw with a completely different structure from the traditional igniting screw, the igniting wire of the igniting screw and the igniting screw are arranged in the main body of the coring device, and the back of the coring device is of a totally-enclosed structure. The device has the characteristics of small volume, convenient manufacture and use, low cost and good safety performance.

The utility model is realized by the following technical scheme: a totally-enclosed corer in back is provided with a cylindrical metal main body, a groove for installing a rock core barrel and the rock core barrel are arranged at the front part of the main body, namely the axial front side surface, a left cable groove and a right cable groove which are the connecting cable grooves of a core head are arranged at the left side and the right side of the cylindrical groove of the rock core barrel, a connecting cable of the rock core barrel is arranged in the cable groove, and a igniting screw is arranged below the groove of the rock core barrel, and the totally-enclosed corer is characterized in that: an inner through hole is arranged below the ignition screw, the inner through hole is axially communicated with the lower part of the coring device body, a conductive wire of the ignition screw is arranged in the inner through hole, and the back, namely the axial rear side surface of the coring device body is arranged as a closed structure below the inner through hole. That is, the back of the core device body is provided with a closed structure axially behind, and the back of the core device is complete and totally closed, has no holes and processing structures and is a complete and smooth cylindrical structure.

The back fully-closed corer of the utility model is further perfected and optimized by the following supplementary scheme:

the front end or the upper end of the main body of the coring device is provided with a front threaded connector.

The back end or the lower end of the main body of the coring device is provided with a back thread connector or a conical protection end with a backward tip.

The back of the main body of the coring device is provided with a left weight-reducing groove and a right weight-reducing groove which are used for reducing the self weight of the coring device, the left weight-reducing groove and the right weight-reducing groove are arranged on two sides of the middle sealing part of the inner through hole and the back of the main body, and the two weight-reducing grooves are not communicated with the inner through hole.

At the back of the cylindrical groove of the core barrel,

the utility model discloses a back totally-enclosed corer, which has the beneficial effects that: the core remover has the advantages of good sealing effect, light weight, compact structure, firmness, durability, reliable detonation performance, convenient use and maintenance, good safety performance, convenient maintenance, easy manufacture, low cost, and particularly improvement on the service performance and service life of the core remover.

Drawings

Fig. 1 is a schematic axial sectional view of the present utility model.

FIG. 2 is a schematic view of the cross-sectional structure A-A of FIG. 1.

Fig. 3 is a front elevation schematic view of the present utility model.

Fig. 4 is a right side elevational schematic of the present utility model.

Fig. 5 is a schematic rear view of the back of the present utility model.

Fig. 6 is a schematic diagram of a front end side view of the present utility model.

Fig. 7 is a schematic diagram of a cross-sectional structure of B-B of fig. 3.

Detailed Description

The utility model is described in detail below with reference to the attached drawings: a back totally-enclosed corer is provided with a cylindrical metal main body 3, which is made of steel materials, has the diameter of 100mm and the length of 2100mm, a groove 12 for installing a core barrel and the core barrel 1 are arranged at the front part of the main body, namely the axial front side surface, a connecting cable groove of the core barrel, namely a left cable groove 8 and a right cable groove 2, are arranged at the left side and the right side of the core barrel groove, a connecting cable of the core barrel is arranged in the cable groove, a igniting screw 7 is arranged below the core barrel groove, an inner through hole 5 with the diameter of 15mm is arranged below the igniting screw, the inner through hole axially penetrates through the inner lower part of the corer body 3, a conducting wire of the igniting screw is arranged in the inner through hole, the lower part of the inner through hole is a closed structure, namely the axial rear side surface of the back of the corer body is a closed structure, namely the back of the corer body is a closed structure, the back of the corer is a complete and totally-enclosed, no hole and no processing structure are formed, and the back of the corer is a complete and smooth cylindrical structure. The front end or the upper end of the main body of the coring device is provided with a front threaded connector 10. The rear end or the lower end of the main body of the coring device is provided with a rear threaded connector 11. The back of the main body of the coring device is provided with a left weight-reducing groove, a right weight-reducing groove 6 and a right weight-reducing groove 4 which are used for reducing the self weight of the coring device, and the two weight-reducing grooves are arranged on two sides of the inner through hole and the middle sealing structure 9 of the back of the main body and are not communicated with the inner through hole. The back of the cylindrical groove of the core barrel, namely the back axial rear of the core remover main body is provided with a closed structure, the back of the core remover is complete and totally closed, no holes or processing structures exist, and the core remover is of a complete and smooth cylindrical structure.

The present utility model is not limited to the embodiments herein, and those skilled in the art can make various modifications and changes without departing from the basic technical scheme of the present utility model, and the technical scheme of the modifications and changes is within the protection scope of the present utility model, and the product is regarded as infringement product.

Claims

1. A totally-enclosed corer in back is provided with a cylindrical metal main body (3), a groove (12) for installing a core barrel, namely a device for installing a core, and a core barrel warhead (1) are arranged on the front part, namely the axial front side surface of the main body, a connecting cable slot, namely a left cable slot (8) and a right cable slot (2), of the core barrel are arranged on the left side and the right side of the groove of the core barrel, a connecting cable of the core barrel is arranged in the cable slot, and a igniting screw (7) is arranged at the bottom of the groove of the core barrel, and the totally-enclosed corer is characterized in that: an inner through hole (5) is arranged below the ignition screw, the inner through hole is axially communicated with the inner lower part of the main body (3), a conductive wire of the ignition screw is arranged in the inner through hole, the back part, namely the axial rear side surface, of the coring device body is arranged to be a closed structure (9) below the inner through hole, namely the axial rear surface of the back part of the coring device body is arranged to be a closed structure, the back part of the coring device is complete and totally-closed, no hole and processing structure exist, and the coring device is of a complete and smooth cylindrical structure.

2. A fully closed back corer as claimed in claim 1, wherein: the front end or the upper end of the main body of the coring device is provided with a front threaded connector (10).

3. A fully closed back corer as claimed in claim 1, wherein: the rear end or the lower end of the main body of the coring device is provided with a rear threaded connector (11) or a conical protection end with a backward pointed end.

4. A fully closed back corer as claimed in claim 1, wherein: the back of the main body of the coring device is provided with a left weight-reducing groove (6) and a right weight-reducing groove (4) which are used for reducing the self weight of the coring device, and the two weight-reducing grooves are arranged at two sides of the middle sealing part of the inner through hole and the sealing structure (9) and are not communicated with the inner through hole.