Ultra-long footage wire-line coring drilling tool suitable for medium-length hole and well drilling

Abstract

The utility model discloses an ultra-long footage wire-line coring drilling tool suitable for medium-length hole and well drilling, which relates to the technical field of drilling sampling equipment and comprises an outer pipe system, an inner pipe system and an orifice slip mechanism. The inner pipe system comprises an elastic clamp assembly, an inner pipe and a double-eccentric clamp spring mechanism which are connected in sequence; the outer pipe system comprises an elastic clamping blocking head, an elastic clamping chamber, a seat ring, an outer pipe, a plurality of outer pipe extension pipe sets and a drill bit which are sequentially arranged. The elastic clamp assembly sequentially penetrates through the elastic clamp blocking head, the elastic clamp chamber and the seat ring and extends into the outer pipe. The orifice slip mechanism is arranged on the outer pipe extension pipe set and is close to the double-eccentric snap spring mechanism. According to the utility model, the rock core can smoothly enter the inner pipe, so that the rock core is effectively prevented from falling off and the recovery rate of the rock core is improved; the design of an orifice slip mechanism facilitates disassembly of the inner pipe and collection of the rock core; in the medium-length hole drilling process, the core quality can be improved, the coring rate can be increased, the auxiliary coring time can be shortened, the labor intensity can be reduced, and the production efficiency can be improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to drilling sampling equipment technical field especially suitable for the super long footage rope coring drill for medium deep hole, well drilling. BACKGROUND

[0002] Drilling engineering is the only means to obtain physical geological data, directly affects the accuracy and reliability of judging geological structure, rock property, mineral resources and hydrogeology and engineering geology, and has important significance for submitting geological survey and mineral reserves.

[0003] The ordinary rope coring double tube drill tool needs to take out the core frequently every 1.5m or 3m in the medium deep hole, well drilling coring construction, and the labor intensity is big, the efficiency is low, and the auxiliary time is long.

[0004] Therefore, it is necessary to develop a new coring drill to improve the coring efficiency and construction efficiency. UTILITY MODEL CONTENT

[0005] The utility model relates to drilling sampling equipment technical field especially suitable for the super long footage rope coring drill for medium deep hole, well drilling.

[0006] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0007] A super long footage rope coring drill for medium deep hole, well drilling suitable for, including outer tube system, inner tube system and orifice slip mechanism;

[0008] The inner tube system includes the elastic card assembly, the inner tube and the double eccentric spring mechanism connected in sequence;

[0009] The outer tube system includes the elastic card head, the elastic card chamber, the seat ring, the outer tube, the multiple outer tube extension pipe groups and the drill bit arranged in sequence;

[0010] The elastic card assembly penetrates the elastic card head, the elastic card chamber and the seat ring in sequence and extends to the outer tube;

[0011] The orifice slip mechanism is arranged on the outer tube extension pipe group and is arranged adjacent to the double eccentric spring mechanism.

[0012] Further, the outer tube extension pipe group is provided with at least three groups, and the outer tube extension pipe group includes an outer tube extension pipe and a centralizing mechanism, the centralizing mechanism includes a centralizer, the centralizer is provided with an internal thread and an external thread at two ends respectively, the internal thread end is used for connecting the outer tube end or the second end of the outer tube extension pipe, and the external thread end is used for connecting the first end of the outer tube extension pipe.

[0013] Further, the inner threaded section of the centralizer is provided with a centralizer ring, which is located in a cavity formed by the outer tube, the centralizer and the inner tube or a cavity formed by the extension tube, the centralizer and the inner tube, and the inner wall of the centralizer ring is in abutment with the outer wall of the inner tube.

[0014] Further, the snap head and the snap chamber are connected through threads, the snap head is provided with a gap at the joint position, and the gap is used for limiting the snap assembly and enabling the snap assembly and the outer tube system to rotate synchronously.

[0015] Further, the double eccentric snap spring mechanism comprises sequentially connected additional eccentric snap spring seats and eccentric snap spring seats, the additional eccentric snap spring seats and the eccentric snap spring seats are connected through threads, and the additional eccentric snap spring seats and the eccentric snap spring seats are internally provided with snap spring retainer rings and snap springs.

[0016] Further, the orifice slip mechanism comprises an orifice slip and an inner tube slip seat, the inner tube slip seat is connected with the drill rod through threads, the outer taper surface of the orifice slip is in abutment with the inner taper surface of the inner tube slip seat, and the orifice slip is clamped to the inner tube system through the self weight.

[0017] Further, the inner tube and the outer tube are both of a multi-section structure, and each section of the inner tube and the outer tube is sequentially connected in a head-to-tail mode according to requirements. Beneficial effects

[0018] Compared with the prior art, the beneficial effects of the utility model lie in that:

[0019] Through the arrangement of the utility model, the super-long wireline coring drill suitable for medium-deep hole and well drilling is provided, the snap assembly of the drill has a simple design structure, high strength and smooth fluid structure, the double eccentric snap spring mechanism of the drill can make the core smoothly enter the inner tube, effectively prevent the core from falling off and improve the core recovery rate, the orifice slip mechanism is designed to facilitate the disassembly of the inner tube and the collection of the core, the total length of the drill reaches 13.2 m, the coring length can reach 12 m or even longer, in the process of medium-deep hole and well drilling, the core quality can be improved, the coring rate can be improved, the auxiliary coring time can be reduced, the labor intensity can be reduced, and the coring efficiency can be improved, which has important significance for the research and development of geological resources and the improvement of the mining efficiency. DETAILED DESCRIPTION

[0020] The accompanying drawings are used to provide a further understanding of the utility model, constitute a part of the specification, are used to explain the utility model together with embodiments of the utility model, and do not constitute a limitation on the utility model.

[0021] Figure 1 It is a schematic view of the super-long coring drill of the utility model;

[0022] Figure 2 It is a schematic view of the centralizing mechanism of the utility model;

[0023] Figure 3 It is the schematic view of double spring mechanism of the utility model;

[0024] Figure 4 It is the schematic view of orifice slip mechanism of the utility model;

[0025] Figure 5 It is the schematic view of elastic card assembly of the utility model;

[0026] Figure 6 It is the schematic view of elastic card head of the utility model;

[0027] Figure 7 It is the schematic view of elastic card chamber of the utility model;

[0028] Figure 8 It is the schematic view of seat ring of the utility model;

[0029] Figure 9 It is the schematic view of outer tube of the utility model;

[0030] Figure 10 It is the schematic view of outer tube extension pipe of the utility model;

[0031] Figure 11 It is the schematic view of drill bit of the utility model.

[0032] In the figure: elastic card head, 1;Elastic card assembly, 2;Elastic card chamber, 3;Seat ring, 4;Outer tube, 5;Inner tube, 6;Centralizing mechanism, 7;Centralizer, 7-1;Centralizing ring, 7-2;Outer tube extension pipe, 8;Double eccentric spring mechanism, 9;Additional eccentric spring seat, 9-1;Spring, 9-2;Spring retainer, 9-3;Eccentric spring seat, 9-4;Drill bit, 10;Orifice slip mechanism, 11;Orifice slip, 11-1;Inner tube slip seat, 11-2. DETAILED DESCRIPTION

[0033] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0034] In the description of the utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model.

[0035] Reference Figures 1-11The utility model relates to a kind of super-long coring drill tools suitable for medium-deep hole drilling, including outer tube system, inner tube system and orifice slip mechanism, inner tube system is located inside outer tube system;

[0036] Inner tube system contains elastic card assembly 2, inner tube 6, double eccentric snap spring mechanism 9,

[0037] Wherein double eccentric snap spring mechanism 9 contains additional eccentric snap spring seat 9-1, snap spring 9-2, snap spring retainer 9-3, eccentric snap spring seat 9-4, additional eccentric snap spring seat 9-1 and eccentric snap spring seat 9-4 are connected by thread, snap spring retainer 9-3 and snap spring 9-2 are located inside additional eccentric snap spring seat 9-1 and eccentric snap spring seat 9-2 respectively, for clamping core;

[0038] Orifice slip mechanism 11 contains orifice slip 11-1 and inner tube slip seat 11-2.

[0039] Wherein, righting mechanism 7 contains righting device 7-1, righting ring 7-2,

[0040] Wherein: elastic card head 1, elastic card chamber 2, seat ring 4, righting device 7-1, outer tube 5, righting ring 7-2, outer tube extension pipe 8, righting device 7-1, righting ring 7-2 and drill bit 10 are sequentially connected, and outer tube system is formed;

[0041] Elastic card head 1 and elastic card chamber 3 are connected by thread, wherein elastic card head 1 joint is opened, for limiting elastic card assembly 2, so that it rotates simultaneously with outer tube system;

[0042] Inner tube slip seat 11-2 can be connected with drill rod by thread;The outer taper surface of orifice slip 11-1 is in contact with the inner taper surface of inner tube slip seat 11-2;Orifice slip 11-1 clamps inner tube system by self weight.

[0043] Further, outer tube system is equipped with at least three sets of righting device 7-1 and righting ring 7-2, and the verticality of drilling is ensured during drilling process, the material of righting ring 7-2 is brass, which effectively improves the service life of inner tube and the stability of inner tube drilling state, effectively protects the original state structure of rock sample, and improves the coring rate and coring quality.

[0044] Further, inner tube 6 and outer tube 5 are connected in split type, the length of inner and outer tube system can be flexibly increased or reduced, so as to control the footage length, the longest can be increased to 12 meters, effectively improve the pure drilling time, reduce auxiliary time, and improve production efficiency.

[0045] Further, righting ring 7-2 limits inner tube 6, and reduces the vibration of inner tube 6 during drilling process;Righting device 7-1 plays the role of connecting and fixing outer tube 6 and outer tube extension pipe 8, and righting device 7-1 can effectively trim hole wall.

[0046] Further, the additional eccentric snap spring seat 9-1 and the eccentric snap spring seat 9-4 are respectively internally provided with a snap spring 9-2 and a snap spring retainer 9-3, and in the process of core taking, the double eccentric snap spring mechanism 9 can make the core smoothly enter the inner tube, effectively prevent the core from falling off, and improve the core taking rate;

[0047] Further, the orifice slip mechanism 11 is used for clamping the inner tube system at the orifice during the process of extracting the core, and each inner tube 6 is clamped once during the process of taking the core, and the core taking is repeatedly performed, so that the inner tube system is protected and overlong inner tube system is prevented from being bent and deformed

[0048] Further, the inner surface of the orifice slip 11-1 is provided with a trapezoidal groove, which is used for improving the friction when the inner tube 6 is clamped; and the trapezoidal groove on the inner surface of the orifice slip 11-1 is surface hardened, so as to improve the hardness and wear resistance, thereby prolonging the service life of the orifice slip 11-1.

[0049] The specific construction mode is as follows:

[0050] In the embodiment, the elastic snap retainer 1, the elastic snap chamber 3, the outer tube 5, the inner tube 6, the centralizer 7-1, the outer tube extension pipe 8, and the drill bit 10 are sequentially connected through threads; and the elastic snap assembly 2, the inner tube 6, the additional eccentric snap spring seat 9-1, and the eccentric snap spring seat 9-4 are sequentially connected through threads.

[0051] When drilling a medium-deep hole in a stratum, the designed centralizer 7-1 is 0.3-0.5 mm larger than the outer diameter of the drill bit 10, the drill bit 10 is 5.5 mm larger than the outer diameters of the outer tube 5 and the outer tube extension pipe 8, and a large annular gap is formed; the surface of the centralizer 7-1 is inlaid with 12 wear-resistant blocks, which are evenly distributed in 4 rows with 3 blocks in each row, and the size of the wear-resistant block is 17 mm in length, 5 mm in width, and 5 mm in height, and the wear-resistant block is the main wear-resistant material of the centralizer 7-1; three sets of centralizing mechanisms 7 are arranged, which play a role in maintaining the perpendicularity of the borehole during drilling; the additional eccentric snap spring seat 9-1 and the eccentric snap spring seat 9-4 are connected at the bottom of the inner tube 6, and an inner part is respectively provided with a snap spring 9-2 and a snap spring retainer 9-3, and in the process of core taking, the double eccentric snap spring mechanism 9 can make the core smoothly enter the inner tube, effectively prevent the core from falling off, and improve the core taking rate; during the process of extracting the core, the inner tube slip seat 11-2 is connected with the drill pipe through threads, when the first inner tube 6 is lifted to the orifice, the orifice slip 11-1 clamps the second inner tube 6, the inner tube free tong is used to unscrew and remove the inner tube 6, so as to obtain the core, and the core taking is sequentially performed, when the fourth inner tube 6 is lifted away from the orifice, the core taking is performed on the ground.

[0052] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, can make equivalent substitutions or changes within the technical range disclosed by the present application, which should be encompassed in the protection scope of the present application.

Claims

1. A long-penetration wireline coring tool suitable for medium-deep hole and well drilling, characterized in that, Includes the outer pipe system, the inner pipe system, and the orifice slip mechanism; The inner tube system includes a spring clip assembly, an inner tube, and a double eccentric spring clip mechanism connected in sequence. The outer tube system includes, in sequence, a spring-loaded stop, a spring-loaded chamber, a seat ring, an outer tube, multiple sets of outer tube extension tubes, and a drill bit; The spring clip assembly passes through the spring clip stop head, the spring clip chamber, the seat ring and extends into the outer tube in sequence; The orifice locking mechanism is installed on the outer tube extension assembly and is located near the double eccentric retaining spring mechanism.

2. The ultra-long wireline coring tool for medium-deep hole drilling as described in claim 1, characterized in that, The outer tube extension tube assembly is provided with at least 3 sets. The outer tube extension tube assembly includes an outer tube extension tube and a straightening mechanism. The straightening mechanism includes a straightener. The straightener has an internal thread and an external thread at both ends. The internal thread end is used to connect to the end of the outer tube or the second end of the outer tube extension tube, and the external thread end is used to connect to the first end of the outer tube extension tube.

3. The ultra-long wireline coring tool for medium-deep hole drilling as described in claim 2, characterized in that, A straightening ring is provided in the internal thread section of the straightener. The straightening ring is located in the cavity formed by the outer tube, the straightener and the inner tube or the cavity formed by the extension tube, the straightener and the inner tube. The inner wall of the straightening ring abuts against the outer wall of the inner tube.

4. The ultra-long wireline coring tool for medium-deep hole and well drilling according to claim 1, characterized in that, The spring clip stop and the spring clip chamber are connected by threads. A notch is provided at the joint of the spring clip stop. The notch is used to restrict the spring clip assembly so that the spring clip assembly and the outer tube system rotate synchronously.

5. The ultra-long wireline coring tool for medium-deep hole and well drilling according to claim 1, characterized in that, The double eccentric snap ring mechanism includes an additional eccentric snap ring seat and an eccentric snap ring seat connected in sequence. The additional eccentric snap ring seat and the eccentric snap ring seat are connected by threads. Both the additional eccentric snap ring seat and the eccentric snap ring seat are provided with snap ring retaining rings and snap rings inside.

6. The ultra-long wireline coring tool for medium-deep hole drilling as described in claim 1, characterized in that, The orifice clamping mechanism includes an orifice clamp and an inner tube clamp seat. The inner tube clamp seat is connected to the drill rod by threads, and the outer conical surface of the orifice clamp fits against the inner conical surface of the inner tube clamp seat. The orifice clamp clamps the inner tube system by its own weight.

7. The ultra-long wireline coring tool for medium-deep hole and well drilling according to claim 1, characterized in that, Both the inner and outer tubes are multi-segment structures, and each segment of the inner and outer tubes is connected end to end in sequence according to requirements.

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