Wire-line coring drill clamp spring check ring structure with righting and guiding functions

Abstract

The utility model provides a wire-line coring drill clamp spring retainer ring structure with centralizing and guiding functions. The wire-line coring drill clamp spring retainer ring structure comprises a coring drill bit, a clamp spring seat, a plurality of clamp springs, a centralizing retainer ring, a reamer and an inner pipe, the inner pipe is arranged at one end of the coring bit; the clamp spring seat is arranged in the inner pipe, the clamp springs are arranged in the clamp spring seat, and the centralizing check ring is arranged in the coring bit and located at one end of each clamp spring. The reamer is arranged on the surface of the inner pipe. According to the wire-line coring drilling tool clamp spring check ring structure with the righting and guiding functions, the coring quality is improved, and the breakage rate and the abrasion rate of a rock core are reduced through the effect of a guiding chamfer; stratum adaptability is enhanced, and the coring requirement of irregular rock cores in fracture development stratums can be met; and the service life is prolonged: the service life of the centralizing check ring is longer than that of the traditional check ring due to the adoption of the wear-resistant material.

Description

Technical Field

[0001] This utility model relates to the fields of geological exploration, mineral resource development and basic engineering construction, and in particular to a retaining ring structure for a wireline coring drill with a straightening and guiding function. Background Technology

[0002] In fields such as geological exploration, mineral resource development, and infrastructure construction, core drilling is an important means of obtaining underground information. With the increase in exploration depth and the increasing requirements for the accuracy of underground information, traditional core drilling and measurement technologies face many challenges.

[0003] In existing wireline coring tools, the main function of the retaining ring is to fix the retaining ring and prevent its axial movement. However, in actual drilling operations, there are some problems. First, when the core enters the inner tube, the core is prone to tilting due to the lack of a guiding structure, which increases the risk of core breakage. Second, the existing retaining ring has a large frictional resistance between it and the core, which has an adverse effect on the core extraction efficiency. Third, the existing retaining ring cannot adapt to the irregular shape of the core in complex formations.

[0004] Therefore, it is necessary to provide a wireline coring tool retaining ring structure with a straightening and guiding function to solve the above-mentioned technical problems. Utility Model Content

[0005] This utility model provides a retaining ring structure for wireline coring drills with a straightening and guiding function, which solves the problem that most existing solutions only focus on the fixing function of the retaining ring and mainly use retaining rings for retaining the retaining ring, without addressing the issue of core guidance.

[0006] To solve the above-mentioned technical problems, this utility model provides a retaining ring structure for a wireline coring drill with a straightening and guiding function, comprising:

[0007] Core drill bit, circlip seat, multiple circlips, centering retainer, reamer and inner tube;

[0008] The inner tube is disposed at one end of the core drill bit;

[0009] The snap ring seat is disposed inside the inner tube, and multiple snap rings are disposed inside the snap ring seat. The centering retaining ring is disposed inside the core drill bit and located at one end of the snap ring.

[0010] The expander is disposed on the surface of the inner tube.

[0011] Preferably, the coring bit is used to extract cylindrical rock samples from the formation.

[0012] Preferably, the inner tube is used as a stationary tube to contain the rock core.

[0013] Preferably, the retaining ring holder is used for mounting multiple retaining rings.

[0014] Preferably, the surface of the hole expander is provided with a plurality of hole expanding components, the hole expanding components including a retaining ring, a plurality of protrusions and a plurality of bolts, the retaining ring being sleeved on the surface of the hole expander, and the plurality of protrusions being respectively connected to the surface of the plurality of retaining rings.

[0015] Preferably, the plurality of bolts are respectively disposed between the retaining ring and the reamer.

[0016] Preferably, the plurality of the protrusions are used to assist the drilling operation of the reamer.

[0017] Compared with related technologies, the wireline coring drill bit retainer structure with straightening and guiding function provided by this utility model has the following beneficial effects:

[0018] This utility model provides a retaining ring structure for a wireline coring drill with a straightening and guiding function, which improves the quality of coring: the breakage rate and wear rate of the rock core are reduced through the effect of the guide chamfer.

[0019] Enhanced formation adaptability: It can adapt to the coring requirements of irregular rock cores in fractured strata;

[0020] Extended service life: Due to the use of wear-resistant materials, the service life of the centering retainer ring is longer than that of traditional retainer rings. Attached Figure Description

[0021] Figure 1 A schematic diagram of the first embodiment of a retaining ring structure for a wireline coring tool with a straightening and guiding function provided by this utility model;

[0022] Figure 2 for Figure 1 The diagram shows the structure of the straightening retaining ring.

[0023] Figure 3 A schematic diagram of the second embodiment of a retaining ring structure for a wireline coring drill with a straightening and guiding function provided by this utility model;

[0024] Figure 4 for Figure 3 The enlarged schematic diagram of part B is shown.

[0025] The diagram labels are: 1. Core drill bit; 2. Snap ring seat; 3. Snap ring; 4. Centering retainer; 5. Reamer; 6. Inner tube;

[0026] 7. Hole-enlarging assembly; 71. Retaining ring; 72. Protrusion; 73. Bolt. Detailed Implementation

[0027] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0028] First Embodiment

[0029] Please refer to the following: Figure 1 and Figure 2 ,in, Figure 1 A schematic diagram of the first embodiment of a retaining ring structure for a wireline coring tool with a straightening and guiding function provided by this utility model; Figure 2 for Figure 1 The diagram shows the structure of the centering retainer ring. A retainer ring structure for a wireline coring drill bit with centering and guiding functions includes:

[0030] 1. Core drill bit; 2. Snap ring seat; 3. Multiple snap rings; 4. Straightening retainer; 5. Hole expander; and 6. Inner tube.

[0031] The inner tube 6 is disposed at one end of the core drill bit 1;

[0032] The snap ring seat 2 is disposed inside the inner tube 6, and multiple snap rings 3 are disposed inside the snap ring seat 2. The straightening retaining ring 4 is disposed inside the core drill bit 1 and located at one end of the snap ring 3.

[0033] The expander 5 is disposed on the surface of the inner tube 6.

[0034] The core drill bit 1 is used to extract cylindrical rock samples from the formation.

[0035] The inner tube 6 is a stationary tube used to contain the rock core.

[0036] The retaining ring seat 2 is used for mounting multiple retaining rings 3.

[0037] The integrated device is made of wear-resistant polyetheretherketone composite material or surface-hardened alloy steel.

[0038] Dimensions: The inner diameter of the centering ring is 0.3-0.5mm larger than the inner diameter of the drill bit, and it matches the stepped hole of the snap ring seat.

[0039] Please refer to the following: Figure 1 and Figure 2 It was learned that the guide chamfer design:

[0040] A 30° guide slope is set at the upper chamfer, which has the function of guiding the rock core into the inner tube;

[0041] The lower chamfer is designed as a 30° transition surface, which is a foolproof design and also improves the service life of the straightening ring.

[0042] Installation structure:

[0043] The straightening retaining ring 4 is installed in the stepped hole of the snap ring seat with a clearance fit;

[0044] The upper part of the straightening retaining ring 4 has an inner tube male thread, and the lower part has an inner conical surface of the snap ring seat 2, which causes the straightening retaining ring 4 to move up and down within a certain area.

[0045] Working in conjunction with snap ring 3:

[0046] The inner diameter of the straightening retaining ring 4 is smaller than the outer diameter of the snap ring 3, thus constraining the axial movement of the snap ring 3 and preventing the snap ring 3 from entering the inner hole of the inner tube 6;

[0047] A gap of about 10mm is maintained between the bottom surface of the straightening retaining ring 4 and the inner step of the retaining ring seat 2 to avoid core blockage.

[0048] Insert the snap ring 3 into the inner hole of the snap ring seat 2 with the smaller outer diameter end facing inwards. Insert the retaining ring 4 into the stepped hole of the snap ring seat 2. Screw the snap ring seat 2 onto the external thread of the inner tube 6. Screw the core drill bit 1 onto the external thread of the reamer 5. Insert the snap ring seat 2 into the inner hole of the reamer 5 until it reaches a certain distance from the inner end face of the core drill bit 1.

[0049] Compared with related technologies, the wireline coring drill bit retainer structure with straightening and guiding function provided by this utility model has the following beneficial effects:

[0050] This utility model provides a retaining ring structure for a wireline coring drill with a straightening and guiding function, which improves the quality of coring: the breakage rate and wear rate of the rock core are reduced through the effect of the guide chamfer.

[0051] Enhanced formation adaptability: It can adapt to the coring requirements of irregular rock cores in fractured strata;

[0052] Extended service life: Due to the use of wear-resistant materials, the service life of the centering retaining ring 4 is longer than that of traditional retaining rings.

[0053] Second Embodiment

[0054] Please refer to the following: Figure 3 and Figure 4 Based on the first embodiment of this application which provides a wireline coring drill circlip retainer structure with a centering and guiding function, the second embodiment of this application proposes another wireline coring drill circlip retainer structure with a centering and guiding function. The second embodiment is merely a preferred embodiment of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0055] Specifically, the second embodiment of this application provides a wireline coring tool retaining ring structure with a straightening and guiding function, which differs in that the surface of the reamer 5 is provided with a plurality of reaming components 7, each reaming component 7 including a fixing ring 71, a plurality of protrusions 72 and a plurality of bolts 73, the fixing ring 71 being sleeved on the surface of the reamer 5, and the plurality of protrusions 72 being respectively connected to the surface of the plurality of fixing rings 71.

[0056] Multiple bolts 73 are respectively disposed between the retaining ring 71 and the reamer 5.

[0057] The plurality of protrusions 72 are used to assist the drilling operation of the reamer 5.

[0058] Multiple fixing holes are provided on the surface of the reamer 5 to match multiple fixing bolts 73.

[0059] The working principle of the retaining ring structure of the wireline coring drill with straightening and guiding function provided by this utility model is as follows:

[0060] When using the reamer 5, to increase the strength of the hole expansion, first, a retaining ring 71 with multiple protrusions 72 is fitted onto the surface of the reamer 5. After the retaining ring 71 is fitted onto the surface of the reamer 5, multiple bolts 73 are passed through the retaining ring 71 and threadedly connected to the reamer 5.

[0061] Compared with related technologies, the wireline coring drill bit retainer structure with straightening and guiding function provided by this utility model has the following beneficial effects:

[0062] This utility model provides a retaining ring structure for a wireline coring drill with a straightening and guiding function. A fixing ring 71, multiple protrusions 72 and multiple bolts 73 are provided on the surface of the reamer 5 to facilitate the drilling operation of the reamer 5.

[0063] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the content of this utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A rope core drill tool snap spring retainer structure with righting guide function, characterized in that, Comprising: a coring bit, a circlip seat, a plurality of circlips, a centralizing retainer, a reamer, and an inner tube; the inner tube is disposed at one end of the coring bit; the circlip seat is disposed inside the inner tube, the plurality of circlips are disposed inside the circlip seat, and the centralizing retainer is disposed inside the coring bit at one end of the circlips; the reamer is disposed on the surface of the inner tube.

2. The rope core drill tool snap spring retainer structure with righting and guiding functions according to claim 1, characterized in that, The coring bit is used to extract a cylindrical rock sample from a formation.

3. The spring retainer ring structure of the rope core drill with righting and guiding functions according to claim 1, characterized in that, The inner tube is used to accommodate a stationary tube body of the rock core.

4. The spring retainer ring structure of the rope core drill with righting and guiding functions according to claim 1, characterized in that, The circlip seat is used to install the plurality of circlips.

5. The spring retainer ring structure of the rope core drill with righting and guiding functions according to claim 1, characterized in that, The surface of the reamer is provided with a plurality of reaming components, which include a fixing ring, a plurality of protrusions, and a plurality of bolts, the fixing ring is sleeved on the surface of the reamer, and the plurality of protrusions are respectively connected to the surface of the plurality of fixing rings.

6. The rope core drill tool snap spring retainer structure with righting guide function according to claim 5, characterized in that, The plurality of bolts are respectively disposed between the fixing ring and the reamer.

7. The rope core drill tool snap spring retainer structure with righting guide function according to claim 5, characterized in that, The plurality of protrusions are used to assist the drilling operation of the reamer.

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