CN211235059U

CN211235059U - Shallow coring tool for petroleum seismic exploration

Info

Publication number: CN211235059U
Application number: CN201922384004.5U
Authority: CN
Inventors: 李雪冬
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-12-26
Filing date: 2019-12-26
Publication date: 2020-08-11
Anticipated expiration: 2029-12-26

Abstract

The utility model discloses a petroleum and seismic exploration shallow layer coring tool, including the drill bit, the top fixedly connected with lower clutch of drill bit, the top threaded connection of lower clutch has outer barrel, the draw-in groove has all been seted up to the both sides at outer barrel inner chamber top, the top threaded connection of outer barrel has the top connection. Insert the inner chamber of outer barrel through the bottom with the top connection, then the downward rotation top connection, the top extrusion fixture block of outer barrel in the rotation in-process, make the fixture block be absorbed in the inner chamber in spring groove, the fixture block passes through slider compression spring simultaneously, the inner chamber of the outer barrel of complete screw in of movable block until the top connection surface, spring reset this moment, the spring pops out the fixture block through the slider, the inner chamber of card income draw-in groove, can avoid the situation that the top connection slipped from outer barrel inner chamber when stewing, the stability when outer barrel and top connection has been improved greatly, and then the life of this petroleum seismic exploration shallow coring tool has been improved.

Description

Shallow coring tool for petroleum seismic exploration

Technical Field

The utility model relates to a petroleum and seismic exploration technical field specifically is a petroleum and seismic exploration shallow layer coring tool.

Background

In the process of land petroleum seismic exploration, particularly high-precision seismic exploration, the determination of the optimal excitation well depth has important significance for improving deep layer reflection energy, but due to different surface layer seismic geological conditions of different regions, the determination of the optimal excitation lithology and the excitation depth has certain difficulty. In order to clear the shallow underground structure and take the core logging as the most direct and effective means, the core logging is not widely applied on site at present, and the core logging is carried out by the coring equipment, so that the surface structure can be accurately known, reliable basic data are provided for determining the optimal excitation well depth, and the core logging has long-term importance.

The existing petroleum seismic exploration shallow coring tool is characterized in that an upper connector and an outer barrel are connected in a threaded mode generally, and threads are easily ground flat after the tool is used for a long time, so that the phenomenon of thread slipping of the upper connector and the outer barrel is caused, the upper connector falls off, great danger is brought to a user, and the stability of the petroleum seismic exploration shallow coring tool is reduced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a shallow layer coring tool of oil and seismic exploration to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a petroleum and seismic exploration shallow layer coring tool, includes the drill bit, the top fixedly connected with lower clutch of drill bit, the top threaded connection of lower clutch has outer barrel, the draw-in groove has all been seted up to the both sides at outer barrel inner chamber top, the top threaded connection of outer barrel has the top connection, the thread groove has been seted up to the bottom of top connection surface, the spring groove has been seted up to the inboard of thread groove, the inner chamber sliding connection in spring groove has the slider, the top fixedly connected with holding down plate of slider, the inboard fixedly connected with spring of slider, one side fixedly connected with fixture block of spring is kept away from to the slider, logical groove has been seted up at the top in spring groove, the impression has been seted up at the top that leads to the groove, the inner chamber sliding connection in impression has the briquetting down, the inboard fixedly connected with.

As further preferable in the present technical solution: the fixture block penetrates through the inner cavity of the clamping groove and is matched with the clamping groove.

As further preferable in the present technical solution: the top of outer barrel inner wall is provided with the internal thread, the inner wall of thread groove is provided with the external screw thread with internal thread looks adaptation, outer barrel and thread groove threaded connection.

As further preferable in the present technical solution: the top of holding down plate runs through to the inner chamber in lower chamber, holding down plate and logical groove sliding connection, the one end and the holding down plate fixed connection that the briquetting was kept away from to the movable block.

As further preferable in the present technical solution: the top of holding down the chamber has seted up the spacing groove, the top fixedly connected with stopper of holding down plate, spacing groove and stopper sliding connection.

As further preferable in the present technical solution: the number of the springs is not less than two, and one end, far away from the sliding block, of each spring is fixedly connected with the spring groove.

Compared with the prior art, the beneficial effects of the utility model are that: insert the inner chamber of outer barrel through the bottom with the top connection, then the downward rotation top connection, the top extrusion fixture block of outer barrel in the rotation in-process, make the fixture block be absorbed in the inner chamber in spring groove, the fixture block passes through slider compression spring simultaneously, the inner chamber of the outer barrel of complete screw in of movable block until the top connection surface, spring reset this moment, the spring pops out the fixture block through the slider, the inner chamber of card income draw-in groove, can avoid the situation that the top connection slipped from outer barrel inner chamber when stewing, the stability when outer barrel and top connection has been improved greatly, and then the life of this petroleum seismic exploration shallow coring tool has been improved.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of a partial cross-sectional structure of the outer cylinder of the present invention;

fig. 3 is an enlarged view of a portion of a in fig. 2 according to the present invention.

In the figure: 1. a drill bit; 2. a lower joint; 3. an outer cylinder; 4. an upper joint; 5. a limiting block; 6. pressing the block; 7. a movable block; 8. a clamping block; 9. a card slot; 10. a spring; 11. a slider; 12. a spring slot; 13. a through groove; 14. a lower pressing plate; 15. a pressing cavity; 16. a limiting groove; 17. a thread groove.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Examples

Referring to fig. 1-3, the present invention provides a technical solution: a shallow coring tool for petroleum seismic exploration comprises a drill bit 1, wherein the top of the drill bit 1 is fixedly connected with a lower joint 2, the top of the lower joint 2 is in threaded connection with an outer barrel 3, two sides of the top of an inner cavity of the outer barrel 3 are respectively provided with a clamping groove 9, the top of the outer barrel 3 is in threaded connection with an upper joint 4, the bottom of the surface of the upper joint 4 is provided with a threaded groove 17, the inner side of the threaded groove 17 is provided with a spring groove 12, the inner cavity of the spring groove 12 is in sliding connection with a sliding block 11, the top of the sliding block 11 is fixedly connected with a lower pressing plate 14, the inner side of the sliding block 11 is fixedly connected with a spring 10, one side of the sliding block 11, which is far away from the spring 10, the top of the spring groove 12 is provided with a through groove 13, the top of the through groove 13 is provided with a lower pressing cavity 15, the inner cavity of the lower pressing, then rotating top connection 4 downwards, top extrusion fixture block 8 of outer barrel 3 in the rotating process, make fixture block 8 sink into the inner chamber of spring groove 12, fixture block 8 is simultaneously through slider 11 compression spring 10, until the complete screw in of movable block 7 on top connection 4 surface in the inner chamber of outer barrel 3, spring 10 resets this moment, spring 10 pops out fixture block 8 through slider 11, the inner chamber of card income draw-in groove 9, can avoid the situation that top connection 4 slips from 3 inner chambers of outer barrel when stewing, the stability when outer barrel 3 is connected with top connection 4 has been improved greatly, and then the life of this oil and seismic exploration shallow coring tool has been improved.

In this embodiment, specifically: the fixture block 8 penetrates through the inner cavity of the clamping groove 9, the fixture block 8 is matched with the clamping groove 9, the upper connector 4 can be limited through the arrangement, the situation that the upper connector 4 and the outer barrel 3 fall off when sliding threads occur is avoided, and the stability in use is improved.

In this embodiment, specifically: the top of the inner wall of the outer barrel 3 is provided with an internal thread, the inner wall of the thread groove 17 is provided with an external thread matched with the internal thread, the outer barrel 3 is in threaded connection with the thread groove 17, and through the arrangement, the outer barrel 3 and the upper joint 4 can be in threaded connection.

In this embodiment, specifically: the top of holding down plate 14 runs through to the inner chamber of holding down chamber 15, and holding down plate 14 and logical groove 13 sliding connection, the one end and the holding down plate 14 fixed connection that briquetting 6 was kept away from to movable block 7 through above setting, can pass through briquetting 6 control fixture block 8, has avoided the situation that fixture block 8 card can not shift out after going into draw-in groove 9.

In this embodiment, specifically: spacing groove 16 has been seted up at the top in holding down chamber 15, and holding down plate 14's top fixedly connected with stopper 5, spacing groove 16 and stopper 5 sliding connection through above setting, stability when holding down plate 14 slides can be improved.

In this embodiment, specifically: two are no less than to spring 10's quantity, and spring 10 keeps away from slider 11's one end and spring groove 12 fixed connection, through above setting, can improve the stability when slider 11 slides, improves the supporting effect of spring 10 to slider 11 simultaneously.

Working principle or structural principle, when in use, the bottom of the upper joint 4 is inserted into the inner cavity of the outer barrel 3, then the upper joint 4 is rotated downwards, the top of the outer barrel 3 extrudes the clamping block 8 in the rotating process, the clamping block 8 is sunk into the inner cavity of the spring groove 12, the clamping block 8 compresses the spring 10 through the sliding block 11 at the same time until the movable block 7 on the surface of the upper joint 4 is completely screwed into the inner cavity of the outer barrel 3, at the moment, the spring 10 is reset, the spring 10 ejects the clamping block 8 through the sliding block 11 and is clamped into the inner cavity of the clamping groove 9, the condition that the upper joint 4 slips from the inner cavity of the outer barrel 3 when in standing can be avoided, the stability when the outer barrel 3 is connected with the upper joint 4 is greatly improved, the service life of the petroleum seismic exploration shallow coring tool is further prolonged, when the coring tool is disassembled, the pressing down of the pressing down block 6 presses the sliding block 11 through, at this time, the upper joint 4 can be screwed out from the inner cavity of the outer cylinder 3.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A shallow coring tool for petroleum seismic exploration comprises a drill bit (1), and is characterized in that: the drill bit is characterized in that a lower joint (2) is fixedly connected to the top of the drill bit (1), an outer barrel (3) is in threaded connection with the top of the lower joint (2), clamping grooves (9) are formed in two sides of the top of an inner cavity of the outer barrel (3), an upper joint (4) is in threaded connection with the top of the outer barrel (3), a thread groove (17) is formed in the bottom of the surface of the upper joint (4), a spring groove (12) is formed in the inner side of the thread groove (17), a sliding block (11) is connected to the inner cavity of the spring groove (12) in a sliding mode, a lower pressing plate (14) is fixedly connected to the top of the sliding block (11), a spring (10) is fixedly connected to the inner side of the sliding block (11), a clamping block (8) is fixedly connected to one side of the sliding block (11) far away from the spring (10), a through groove (13), the inner cavity of the lower pressing cavity (15) is connected with a lower pressing block (6) in a sliding mode, and a movable block (7) is fixedly connected to the inner side of the lower pressing block (6).

2. The shallow coring tool for petroleum seismic exploration according to claim 1, wherein: the clamping block (8) penetrates through the inner cavity of the clamping groove (9), and the clamping block (8) is matched with the clamping groove (9).

3. The shallow coring tool for petroleum seismic exploration according to claim 1, wherein: the top of outer barrel (3) inner wall is provided with the internal thread, the inner wall of thread groove (17) is provided with the external screw thread with internal thread looks adaptation, outer barrel (3) and thread groove (17) threaded connection.

4. The shallow coring tool for petroleum seismic exploration according to claim 1, wherein: the top of the lower pressing plate (14) penetrates through the inner cavity of the lower pressing cavity (15), the lower pressing plate (14) is connected with the through groove (13) in a sliding mode, and one end, far away from the lower pressing block (6), of the movable block (7) is fixedly connected with the lower pressing plate (14).

5. The shallow coring tool for petroleum seismic exploration according to claim 1, wherein: limiting grooves (16) are formed in the top of the pressing-down cavity (15), limiting blocks (5) are fixedly connected to the top of the pressing-down plate (14), and the limiting grooves (16) are connected with the limiting blocks (5) in a sliding mode.

6. The shallow coring tool for petroleum seismic exploration according to claim 1, wherein: the number of the springs (10) is not less than two, and one end, far away from the sliding block (11), of each spring (10) is fixedly connected with the spring groove (12).