CN101649727B - Core orientator - Google Patents

Abstract

The invention provides a core orientator which assembles a chemical expansion pipe with a thrust cone together; the thrust cone can not rotate due to limitation of sharps of a cavity in the chemical expansion pipe and grooves in the thrust cone; the thrust cone is connected with a clinoretee through a reducing joint; the chemical expansion pipe is mounted in a small drill hole; a general drill stem exerts pressure which is transmitted to the thrust cone, then the thrust cone forces the chemical expansion pipe to generate expanding damage and extrude instant adhesive in the cavity to flow out so as to lead the chemical expansion pipe to be extruded and glued into the small drill hole; the orientation of a mark trace is measured to obtain the core orientation.

Description

Core Orienter

Technical field

The invention relates to a core orienter.

Background technique

At present, it is difficult to orientate the core in situ by conventional drilling. During the orientation process of the drilling and directional equipment with a carving knife, the directional mark may be reversed in actual operation, which may cause a deviation from the real orientation of the core, which is not conducive to practical application.

Contents of the invention

In order to overcome the deficiencies of existing drilling orienting equipment, such as easy torsion deviation of orientation marks and low orientation accuracy during drilling, the present invention provides a core orienter, which is installed in an existing small borehole, and is installed in the installation process. The central core orienter does not twist, and is fixed with the rock solidification to accurately measure the orientation of the core.

The technical solution adopted by the present invention to solve the technical problem is: the chemical expansion tube is assembled with the thrust cone, the thrust cone is connected to the different-diameter joint through pins, convex keys and grooves, and the different-diameter joint is connected to the inclinometer. Put the chemical expansion tube in the small borehole, apply pressure to the thrust cone, the thrust cone squeezes out the quick gel in the cavity through the piston, and the quick gel condenses the chemical expansion tube and the surrounding rock into one, and the thrust cone makes the The expansion tube is deformed and fixed in the small borehole. After measuring the data of the inclinometer, the reducing joint is separated from the thrust cone, and then a large-diameter conventional drill is used to drill the thrust cone and the core. The orientation of the core is determined by the marks on the thrust cone and the expansion tube.

The beneficial effect of the present invention is that the core orienter and the rock are fixed as a whole, the orientation of the core orienter corresponds to the orientation of the core, the precision is high, the structure is simple, and the disassembly is convenient.

Description of drawings

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

Fig. 1 is initial structural schematic diagram of the present invention;

Fig. 2 is a structure schematic diagram after the operation of the present invention is completed;

Fig. 3 is the front view of the chemical expansion pipe of Fig. 1 of the present invention;

Fig. 4 is the top view of the chemical expansion pipe of Fig. 1 of the present invention;

Fig. 5 is a front view of the thrust cone of Fig. 1 of the present invention;

Fig. 6 is a top view of the thrust cone of Fig. 1 of the present invention;

Fig. 7 is a front view of the reducing joint of Fig. 1 of the present invention;

Fig. 8 is a top view of the reducing joint in Fig. 1 of the present invention;

In the figure 1. Chemical expansion tube, 2. Thrust cone, 3. Different diameter joint, 4. Gel outlet, 5. Cavity, 6. Piston, 7. Convex key, 8. Expansion head, 9. Groove, 10 .Convex key, 11. Convex key, 12. Groove, 13. Groove, 14 Pin, 15. Internal thread, 16. Mark mark, 17. Mark mark, 18. Mark mark, 19. Small round hole, 20 small round hole.

Detailed ways

In Fig. 1 and Fig. 2, the chemical expansion tube (1) is assembled with the thrust cone (2), and the thrust cone (2) passes through the pin (14), the convex key (10), the convex key (11) and the groove ( 12), the groove (13) is connected with the different-diameter joint (3), the different-diameter joint (3) is connected with the upper inclinometer through the internal thread (15), and the cavity (5) inside the chemical expansion tube (1) is installed Full-speed gel, the cavity (5) is cast with a convex key (7), and there are two closed gel outlets (4) at the bottom of the cavity (5). The gel outlet (4) is relatively weak and will conduction; the head of the thrust cone (2) has a piston (6), the groove (9) on the thrust cone (2) corresponds to the convex key (7), the rear part has a small round hole (19), and the inner wall is cast with a convex Key (10), convex key (11); There are small round holes (20) and small round holes (19) corresponding to place pins (14), grooves (12), grooves (13) on the head of the reducing joint (3) ) correspond to the convex key (10) and the convex key (11) respectively, and the inner wall of the rear part has an internal thread (15); the chemical expansion pipe (1) is cast with a mark mark (16), and the thrust cone (2) is cast with a mark mark ( 17), different-diameter joints (3) are cast with marking marks (18).

In the embodiment shown in Fig. 1, the chemical expansion pipe (1) shown in Fig. 3 and Fig. 4, the thrust cone (2) shown in Fig. 5 and Fig. 6, the reducing joint ( 3) Assemble the initial structure of the present invention, place the chemical expansion tube (1) in a small borehole, apply pressure through a conventional drill pipe, the pressure is transmitted to the different diameter joint (3), the pin (14) is squeezed off, and the Under the action of the convex key (10), convex key (11) and groove (12), groove (13), the pressure is transmitted to the thrust cone (2), and the thrust cone (2) squeezes the cavity ( 5) The quick gel in the gel flows out from the gel outlet (4) and forces the chemical expansion head (8) to expand and destroy, so that the chemical expansion tube (1) is extruded and cemented in the small drill hole; as shown in Figure 2, The groove (9) is stuck on the convex key (7), ensuring that the thrust cone (2) can only move vertically in the cavity (5) and cannot rotate. After the pin (14) is broken, the small round hole (19) and the small The round holes (20) are staggered, the convex key (10) is stuck on the groove (12), and the convex key (11) is stuck on the groove (13), so as to ensure that the different diameter joint (3) and the thrust cone (2) do not Rotate; lift the drilling tool after the inclinometer measures the data, and separate the thrust cone (2) from the reducing joint (3). Finally, the chemical expansion pipe (1) and the thrust cone (2) and the large-diameter core are drilled out with a conventional large-diameter drill bit, and the chemical expansion pipe (1) is passed through the marking mark (16) on the thrust cone (2). (17) and mark marks (18) on the reducer joint (3) determine the orientation of the rock core.

Claims (5)

1. A rock core orientator utilizes an inclinometer to measure the orientation of the rock core mark, and is characterized in that: the chemical expansion pipe is the expansion pipe that the fast gel is equipped with in the cavity in the pipe, and the chemical expansion pipe, the thrust cone and the reducing joint are equipped with There are marking marks, the chemical expansion tube is at the lower end, the thrust cone is connected in the cavity of the chemical expansion tube and can be stretched and moved, and the thrust cone is connected with the inclinometer through a reducing joint. 2. The rock core orienter according to claim 1, characterized in that: the chemical expansion pipe is integrated with the thrust cone, the cavity is filled with gel, and the thrust cone head is equipped with a piston. 3. The core orienter according to claim 1, characterized in that: there are convex keys in the cavity, grooves on the thrust cone, and the keys correspond to the grooves to limit the rotation of the thrust cone. 4. The core orienter according to claim 1, characterized in that: the marking marks on the chemical expansion pipe, the thrust cone and the reducing joint are axial marking marks. 5. The core orienter according to claim 1, characterized in that: there are two protruding keys on the rear inner wall of the thrust cone, and there are two grooves on the different-diameter joint, the grooves are stuck on the protruding keys, so as to limit the contact between the thrust cone and the different diameter joint. The diameter joint rotates, and the pin connects the thrust cone and the different diameter joint through the small round hole.

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