Cable-passing drill pipe centralizer for double-pipe directional drilling

Abstract

The utility model provides a through-cable drill pipe centralizer for double-pipe directional drilling, which comprises a support shell and a support tile arranged on the outer side surface of the support shell. A first shaft body and a second shaft body are arranged in the support tile, and concentric rolling wheels are arranged on the outer side face of the first shaft body and the outer side face of the second shaft body in a sleeving mode. According to the cable-passing drill pipe centralizer for double-pipe directional drilling, in the structural design of the supporting shell and the support tile, the first shaft body parallel to the axis of the supporting shell and the second shaft body perpendicular to the axis of the first shaft body are arranged, and the concentric idler wheels are arranged on the outer side faces of the first shaft body and the second shaft body in a sleeving mode; when the centralizer is placed on the inner side face of the outer pipe to work, the concentric idler wheels can roll on the inner side face of the outer pipe, and in the double-pipe rotary drilling process, the concentric idler wheels can effectively reduce direct friction between the inner pipe and the outer pipe, so that the construction progress is guaranteed, the construction cost is reduced, and safety accidents are reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to a centralizer technical field especially relates to a kind of through cable drill pipe centralizers for double-tube directional drilling. BACKGROUND

[0002] Double-tube drilling rig, also called double-tube double-drive drilling rig, adopts double-power head mechanism to drive inner and outer pipes, and inner and outer drill pipes work in relative rotary direction drilling mode.

[0003] However, in the double-tube rotary drilling process, affected by vibration, build angle and other factors, the inner and outer pipes may appear mutual abrasion, which makes the inner and outer pipes face the risk of fatigue fracture caused by friction. This situation not only affects the construction progress and increases the construction cost, but also may cause safety accidents.

[0004] Therefore, it is necessary to provide a through cable drill pipe centralizer for double-tube directional drilling to solve the above technical problems. UTILITY MODEL CONTENT

[0005] The utility model provides a kind of through cable drill pipe centralizer for double-tube directional drilling, solve the problem that inner and outer pipes are caused fatigue fracture due to mutual abrasion in the double-tube rotary drilling process, and then affect construction progress, increase construction cost and cause safety accident.

[0006] To solve the above technical problems, the utility model provides a through cable drill pipe centralizer for double-tube directional drilling, comprising:

[0007] The support shell and the support tile are arranged on the outer side of the support shell;

[0008] The inner part of the support tile is provided with a first shaft body and a second shaft body, and the outer side of the first shaft body and the second shaft body is sleeved with a concentric roller;

[0009] The inner side of the support shell is provided with an elastic retainer and a support ring at both ends, the inner side of the elastic retainer and the support ring is respectively provided with a plastic female connector and the plastic male connector, the inner part of the plastic female connector and the plastic male connector is respectively provided with a first through cable connector and a second through cable connector, and the inner part of the plastic female connector and the plastic male connector is further provided with a wire tube.

[0010] Preferably, the first shaft body is parallel to the axis of the support shell, and the second shaft body is perpendicular to the second shaft body axis.

[0011] Preferably, the two sides of the concentric roller are provided with flat washers, and the flat washers are sleeved on the outer side of the first shaft body and the second shaft body.

[0012] Preferably, the conduit contains copper wires, and the outer surfaces of the conduit, the first cable connector, and the second cable connector are all fitted with first O-rings, with the outer surfaces of the first O-rings respectively fitting against the inner surfaces of the plastic female connector and the plastic male connector.

[0013] Preferably, the outer surface of the plastic male connector is provided with a second O-ring, and the inner surface of the plastic female connector is provided with a variable diameter spring.

[0014] Preferably, the cable-driven drill pipe stabilizer for dual-tube directional drilling further includes a movable ring, an arc ring, and a second limiting groove. The second limiting groove is respectively opened at the top and bottom of the support housing. The movable ring is slidably connected to both ends of the outer side of the support housing. The arc ring is fixedly installed at both ends of the support tile. A first limiting groove is opened at one end of the support tile. Grooves are opened at the top and bottom of the movable ring. A slider is fixedly installed at the top and bottom of the inner side of the movable ring. Bolts are internally threaded onto the slider.

[0015] Preferably, the movable ring is disposed on the outer side of the arc-shaped ring, and the slider is slidably connected to the inner side of the first limiting groove and the second limiting groove respectively.

[0016] Compared with related technologies, the cable-stayed drill pipe stabilizer for dual-tube directional drilling provided by this utility model has the following beneficial effects:

[0017] This utility model provides a cable drill pipe stabilizer for dual-tube directional drilling. By designing the support shell and support tile structure, a first shaft parallel to the axis of the support shell and a second shaft perpendicular to the axis of the first shaft are provided. Concentric rollers are fitted on the outer surfaces of the first and second shafts, so that when the stabilizer is inserted into the inner surface of the outer tube, the concentric rollers can roll on the inner surface of the outer tube. During the dual-tube rotary drilling process, the concentric rollers can effectively reduce the direct friction between the inner and outer tubes, thereby ensuring the construction progress, reducing construction costs, and reducing the occurrence of safety accidents. Attached Figure Description

[0018] Figure 1 A schematic diagram of the structure of a first embodiment of a cable-driven drill pipe stabilizer for dual-tube directional drilling provided by this utility model;

[0019] Figure 2 for Figure 1 The diagram shows the support tile structure.

[0020] Figure 3 for Figure 2 The diagram shows the side structure of the support tile.

[0021] Figure 4A schematic diagram of the structure of a second embodiment of a cable-driven drill pipe stabilizer for dual-tube directional drilling provided by this utility model;

[0022] Figure 5 for Figure 4 The enlarged schematic diagram of part A is shown.

[0023] The following are the labels in the diagram: 1. Concentric roller, 2. Flat washer, 3. First shaft, 4. Support housing, 5. Second shaft, 6. Bracket tile, 7. Plastic female connector, 8. Variable diameter spring, 9. First cable connector, 10. First O-ring, 11. Elastic retaining ring, 12. Support ring, 13. Copper wire, 14. Conduit, 15. Second O-ring, 16. Second cable connector, 17. Plastic male connector, 18. Moving ring, 181. Slider, 182. Groove, 183. Bolt, 19. Arc ring, 191. First limiting groove, 20. Second limiting groove. Detailed Implementation

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] First Embodiment

[0026] Please refer to the following: Figure 1 , Figure 2 , Figure 3 ,in, Figure 1 A schematic diagram of the structure of a first embodiment of a cable-driven drill pipe stabilizer for dual-tube directional drilling provided by this utility model; Figure 2 for Figure 1 The diagram shows the support tile structure. Figure 3 for Figure 2 The diagram shows a side view of the support tile structure. A cable-stayed drill pipe stabilizer for dual-tube directional drilling includes: a support housing 4 and a support tile 6, wherein the support tile 6 is disposed on the outer side of the support housing 4;

[0027] The bracket tile 6 is provided with a first shaft 3 and a second shaft 5 inside, and concentric rollers 1 are sleeved on the outer surfaces of the first shaft 3 and the second shaft 5.

[0028] Both ends of the inner side of the support housing 4 are provided with elastic retaining rings 11 and support rings 12. The inner sides of the elastic retaining rings 11 and support rings 12 are respectively provided with plastic female connectors 7 and plastic male connectors 17. The plastic female connectors 7 and plastic male connectors 17 are respectively provided with first cable connectors 9 and second cable connectors 16. The plastic female connectors 7 and plastic male connectors 17 are also provided with conduits 14.

[0029] The first shaft 3 is arranged parallel to the axis of the support housing 4, and the second shaft 5 is arranged perpendicular to the axis of the second shaft 3.

[0030] Flat washers 2 are provided on both sides of the concentric roller 1, and the flat washers 2 are respectively sleeved on the outer side of the first shaft 3 and the second shaft 5.

[0031] The conduit 14 is provided with a copper wire 13 inside. The outer surfaces of the conduit 14, the first cable connector 9 and the second cable connector 16 are all fitted with a first O-ring 10. The outer surfaces of the first O-ring 10 are respectively attached to the inner surfaces of the plastic female connector 7 and the plastic male connector 17.

[0032] The outer side of the plastic male connector 17 is provided with a second O-ring 15, and the inner side of the plastic female connector 7 is provided with a variable diameter spring 8.

[0033] A transverse mounting groove and a longitudinal mounting groove are provided on the side of the support tile 6 for mounting a first shaft 3 parallel to the axis of the support housing 4 and a second shaft 5 perpendicular to the axis of the first shaft 3, as well as for mounting concentric rollers 1 mounted on the outer sides of the first shaft 3 and the second shaft 5. In this way, when the inner and outer drill pipes rotate, the concentric rollers 1 on the outer side of the second shaft 5 will rotate, and when the inner and outer drill pipes are fed, the concentric rollers 1 mounted on the outer side of the first shaft 3 will roll.

[0034] The working principle of the cable-driven drill pipe stabilizer for dual-tube directional drilling provided by this utility model is as follows:

[0035] Before use, install elastic retaining rings 11 and support rings 12 at both ends of the inner hole of the support housing 4. Then, insert the flat washer 2, concentric roller 1 and flat washer 2 into the first shaft 3 in sequence. Then insert the first shaft 3 into the bracket 6. Then insert the flat washer 2, concentric roller 1 and flat washer 2 into the second shaft 5. Then insert the second shaft 5 into the bracket 6.

[0036] Then, weld the bracket tile 6 to the outer side of the support shell 4, insert the first O-ring 10 into the first cable connector 9 and the second cable connector 16, insert the first cable connector 9 into the plastic female connector 7, insert the copper wire 13 into the first cable connector 9, put the first O-ring 10 into the conduit 14, put the conduit 14 into the plastic female connector 7, insert the female threaded end of the conduit 14 into the support shell 4 first, connect the plastic male connector 17 and the male threaded end of the support shell 4 to the conduit 14, insert the second cable connector 16 into the plastic male connector 17 and connect it to the copper wire 13 in the conduit 14, put the end of the plastic male connector 17 into the second O-ring 15, and finally press the variable diameter spring 8 into the first cable connector 9.

[0037] When in use, the support housing 4 is placed inside the outer tube. At this time, the outer side of the concentric roller 1 contacts the inner side of the outer tube, and the concentric roller 1 guides and aligns the feed direction and rotation direction.

[0038] Compared with related technologies, the cable-stayed drill pipe stabilizer for dual-tube directional drilling provided by this utility model has the following beneficial effects:

[0039] By designing the structure of the support shell 4 and the bracket 6, a first shaft 3 parallel to the axis of the support shell 4 and a second shaft 5 perpendicular to the axis of the first shaft 3 are provided. Concentric rollers 1 are fitted on the outer surfaces of the first shaft 3 and the second shaft 5. When the stabilizer is inserted into the inner surface of the outer tube, the concentric rollers 1 can roll on the inner surface of the outer tube. During the double-tube rotary drilling process, the concentric rollers 1 can effectively reduce the direct friction between the inner and outer tubes, thereby ensuring the construction progress, reducing construction costs, and reducing the occurrence of safety accidents.

[0040] Second Embodiment

[0041] Please refer to the following: Figure 4 and Figure 5 Based on the first embodiment of this application, which provides a cable-driven drill pipe centralizer for dual-tube directional drilling, the second embodiment of this application proposes another cable-driven drill pipe centralizer for dual-tube directional drilling. 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.

[0042] Specifically, the second embodiment of this application provides a cable-driven drill pipe stabilizer for dual-tube directional drilling, which differs in that the cable-driven drill pipe stabilizer for dual-tube directional drilling further includes a movable ring 8, an arc ring 19, and a second limiting groove 20. The second limiting groove 20 is respectively opened at the top and bottom of the support housing 4. The movable ring 8 is slidably connected to both ends of the outer side of the support housing 4. The arc ring 19 is respectively fixedly installed at both ends of the bracket 6. A first limiting groove 191 is opened at one end of the bracket 6. Grooves 182 are opened at the top and bottom of the movable ring 8. A slider 181 is fixedly installed at the top and bottom of the inner side of the movable ring 8. A bolt 183 is internally threaded onto the slider 181.

[0043] The movable ring 18 is disposed on the outer side of the arc ring 19, and the slider 181 is slidably connected to the inner side of the first limiting groove 191 and the second limiting groove 20 respectively.

[0044] The working principle of the cable-driven drill pipe stabilizer for dual-tube directional drilling provided by this utility model is as follows:

[0045] When the bracket tile 6 needs to be disassembled and maintained during use, the operator only needs to rotate the bolts 183 of the movable rings 18 installed on the arc rings 19 at both ends of the bracket tile 6, so that the bolts 183 rotate inside the slider 181, thereby moving the bottom of the bolts 183 away from the bottom of the inner side of the second limiting groove 20. Then the operator can move the movable rings 18, thereby moving the sliders 181 out from the inner side of the first limiting groove 191 and the second limiting groove 20 respectively, and then disassemble the bracket tile 6.

[0046] Compared with related technologies, the cable-stayed drill pipe stabilizer for dual-tube directional drilling provided by this utility model has the following beneficial effects:

[0047] The moving ring 18, slider 181, bolt 183, arc ring 19, first limiting groove 191 and second limiting groove 20 work together to make it easy and quick to install and remove the bracket tile 6. Only the moving ring 18 and the bolt 183 need to be moved and rotated. This increases the efficiency of subsequent maintenance.

[0048] 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 cable-driven drill pipe stabilizer for dual-tube directional drilling, characterized in that, include: A supporting shell and a bracket, wherein the bracket is disposed on the outer side of the supporting shell; The support tile is provided with a first shaft and a second shaft inside, and concentric rollers are sleeved on the outer surfaces of the first shaft and the second shaft. Both ends of the inner side of the support housing are provided with elastic retaining rings and support rings. The inner sides of the elastic retaining rings and support rings are respectively provided with plastic female connectors and plastic male connectors. The plastic female connectors and plastic male connectors are respectively provided with first cable connectors and second cable connectors. The plastic female connectors and plastic male connectors are also provided with conduits.

2. A cable-driven drill pipe stabilizer for dual-tube directional drilling according to claim 1, characterized in that, The first shaft is arranged parallel to the axis of the support housing, and the second shaft is arranged perpendicular to the axis of the second shaft.

3. A cable-driven drill pipe stabilizer for dual-tube directional drilling according to claim 1, characterized in that, Flat washers are provided on both sides of the concentric roller, and the flat washers are respectively sleeved on the outer side of the first shaft and the second shaft.

4. A cable-driven drill pipe stabilizer for dual-tube directional drilling according to claim 1, characterized in that, The conduit contains copper wires, and the outer surfaces of the conduit, the first cable connector, and the second cable connector are all fitted with first O-rings. The outer surfaces of the first O-rings are respectively attached to the inner surfaces of the plastic female connector and the plastic male connector.

5. A cable-driven drill pipe stabilizer for dual-tube directional drilling according to claim 1, characterized in that, The outer side of the plastic male connector is provided with a second O-ring, and the inner side of the plastic female connector is provided with a variable diameter spring.

6. A cable-driven drill pipe stabilizer for dual-tube directional drilling according to claim 1, characterized in that, It also includes a movable ring, an arc ring, and a second limiting groove. The second limiting groove is respectively opened at the top and bottom of the support housing. The movable ring is slidably connected to both ends of the outer side of the support housing. The arc ring is respectively fixedly installed at both ends of the bracket tile. A first limiting groove is opened at one end of the bracket tile. Grooves are opened at the top and bottom of the movable ring. A slider is fixedly installed at the top and bottom of the inner side of the movable ring. The slider is internally threaded with a bolt.

7. A cable-driven drill pipe stabilizer for dual-tube directional drilling according to claim 6, characterized in that, The movable ring is disposed on the outer side of the arc-shaped ring, and the slider is slidably connected to the inner side of the first limiting groove and the second limiting groove respectively.

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