Torsional pipe lifting device for full-hydraulic drilling rig

Abstract

The utility model provides a twisting type pipe lifting device for a full-hydraulic drilling rig. The twisting type pipe lifting device comprises a fixed support, a first pipe lifting device and a second pipe lifting device, wherein the middle and the top of the interior of the fixed support are open; the connecting frame is fixedly mounted at the bottom of the fixed support; a connecting plate is arranged in the connecting frame, and the connecting plate can be fixed at different positions in the height direction of the connecting frame; a lifting appliance is fixedly mounted at the bottom of the connecting plate, and an iron ring is arranged on the lifting appliance; wherein the fixed support is connected with a power shaft of the machine head of the drilling machine through threads. According to the scheme, the problem of matching of a hydraulic fracturing ground stress test and a high-pressure water pressure test in a hole after a full-hydraulic power head type drilling machine is adopted to complete drilling is solved, the working efficiency is improved, a test steel pipe joint can be conveniently and easily put into a lifting appliance during use, a test steel pipe is tightened (loosened) through power rotation of a machine head, and the working efficiency is improved. And the test steel pipe is lifted (descended) through the up-and-down movement of the machine head.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic fracturing method for geostress testing, and in particular to a torsionable pipe lifting device for a fully hydraulic drilling rig. Background Technology

[0002] In the geological exploration of hydropower and other engineering projects, a variety of drilling exploration methods are used. Various tests are conducted in the borehole, including rock mass hydraulic fracturing method for in-situ stress testing and high-pressure water pressure (permeability) test.

[0003] Drilling typically employs a standard vertical shaft mechanical transmission drilling rig, consisting of a rig head, diesel engine (or electric motor), power control and transmission system, winch, and tripod. During the drilling phase, the winch is used when the drill rod needs to be quickly raised or lowered. The winch's wire rope is mounted on a pulley at the top of the tripod, with one end connected to a standard pipe (rod) lifter. The pipe (rod) lifter can quickly engage with the drill rod joint for raising and lowering. During borehole stress testing and high-pressure water pressure testing, the test-specific steel pipe and packer are raised and lowered using the drilling rig's winch and the standard pipe (rod) lifter. Each steel pipe (drill rod) connection is performed manually by rotating and tightening.

[0004] To improve drilling efficiency, fully hydraulic power head drilling rigs are now used, consisting of an axially movable drill head, a single-column support, a diesel engine (or electric motor), and a hydraulic control and transmission system. The drill head has a stroke of about 1.8m, and the drill rod is generally 1.5m long. No winch is needed when raising or lowering the drill rod, and the power head can be used to rotate and tighten each steel pipe (drill rod) connection.

[0005] When using a fully hydraulic power head drilling rig, the original test steel pipe and pipe lifting device cannot be used, thus making it impossible to ensure the smooth progress of the borehole water pressure fracturing method for stress testing and high-pressure water pressure testing. Utility Model Content

[0006] To address the aforementioned problems, this utility model proposes a torsion-type pipe lifting device for fully hydraulic drilling rigs, thereby resolving the issues present in the prior art.

[0007] To achieve the above objectives, the present invention provides a torsionable pipe lifting device for a fully hydraulic drilling rig, comprising: a fixed support, wherein the fixed support is hollow inside and open at the top;

[0008] A connecting frame, which is fixedly installed at the bottom of the fixed support;

[0009] The connecting frame is provided with a connecting plate inside, and the connecting plate can be fixed at different positions in the height direction of the connecting frame.

[0010] A lifting device is fixedly installed at the bottom of the connecting plate, and an iron ring is provided on the lifting device;

[0011] The fixed support is connected to the power shaft of the drilling rig head via a thread.

[0012] Furthermore, a connecting groove is provided at the bottom of the connecting frame, and the connecting plate is disposed in the connecting groove.

[0013] Furthermore, the connecting frame is provided with bolts inside, which pass through the connecting frame and the connecting plate to fix the position of the connecting plate.

[0014] Furthermore, a groove is provided on the upper part of the connecting plate, and the bolt passes through the groove through the connecting plate.

[0015] Furthermore, the bottom of the lifting device is provided with a bayonet.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows: This solution solves the problem of coordinating the hydrostatic fracturing method for ground stress testing and high-pressure water pressure testing in the hole after drilling with a fully hydraulic power head drilling rig, thus improving work efficiency. When in use, the test steel pipe joint can be conveniently and easily placed into the lifting device, and the test steel pipe can be tightened (loosened) by rotating the head, and then the test steel pipe can be lifted (lowered) by moving the head up and down.

[0017] To better understand and implement this invention, the following detailed description is provided in conjunction with the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a front view of the present invention;

[0019] Figure 2 This is a side view of the present invention.

[0020] In the diagram: 1. Fixed support; 2. Connecting frame; 3. Connecting groove; 4. Connecting plate; 5. Bolt; 6. Lifting tool; 7. Slide groove; 8. Iron ring; 9. Bayonet. Detailed Implementation

[0021] To provide a clearer understanding of the technical features, objectives, and effects of this utility model, specific embodiments of this utility model are now described with reference to the accompanying drawings. However, the scope of protection of this utility model is not limited to the following description.

[0022] Reference Figure 1-2As shown, a torsionable pipe-lifting device for a fully hydraulic drilling rig includes: a fixed support 1, which is hollow inside and open at the top; a connecting frame 2, which is fixedly installed at the bottom of the fixed support 1; a connecting plate 4 is provided inside the connecting frame 2, which can be fixed at different positions in the height direction of the connecting frame 2; a lifting device 6 is fixedly installed at the bottom of the connecting plate 4, and an iron ring 8 is provided on the lifting device 6; wherein the fixed support 1 is connected to the power shaft of the drilling rig head by threads.

[0023] The bottom of the connecting frame 2 is provided with a connecting groove 3, and the connecting plate 4 is set in the connecting groove 3; the inside of the connecting frame 2 is provided with bolts 5, which pass through the connecting frame 2 and the connecting plate 4 to fix the position of the connecting plate 4; the upper part of the connecting plate 4 is provided with a sliding groove 7, and the bolts 5 pass through the sliding groove 7 to the connecting plate 4; the bottom of the lifting device 6 is provided with a bayonet 9.

[0024] This utility model provides a technical solution in which the upper fixed support 1 of the torsion-type pipe lifting device is connected to the power shaft of the drilling rig head via threads. The lower part of the lifting device 6 is the same as that of a conventional lifting device, used to clamp the test steel pipe. The lifting device 6 is connected to the connecting frame 2 by bolts 5. The lifting device 6 can rotate along the connecting groove plane of the connecting frame 2, and can also move axially along the lifting device 6. In use, the test steel pipe joint can be conveniently and easily placed into the lifting device 6, the test steel pipe can be tightened by rotating the drilling rig head, and the test steel pipe can be lifted and lowered by moving the drilling rig head up and down.

[0025] The above-disclosed embodiments are merely preferred embodiments of the present utility model and should not be construed as limiting the scope of the present utility model. Therefore, any equivalent variations made in accordance with the claims of the present utility model shall still fall within the scope of the present utility model.

Claims

1. A torsion-type pipe-lifting device for a fully hydraulic drilling rig, characterized in that, include: Fixed support (1), the fixed support (1) is hollow inside and open at the top; A connecting frame (2) is fixedly installed at the bottom of the fixed support (1); The connecting frame (2) is provided with a connecting plate (4) inside, and the connecting plate (4) can be fixed at different positions in the height direction of the connecting frame (2); A lifting device (6) is fixedly installed at the bottom of the connecting plate (4), and an iron ring (8) is provided on the lifting device (6). The fixed support (1) is connected to the power shaft of the drilling head by a thread.

2. The torsion-type pipe-lifting device for a fully hydraulic drilling rig according to claim 1, characterized in that: The bottom of the connecting frame (2) is provided with a connecting groove (3), and the connecting plate (4) is disposed in the connecting groove (3).

3. A torsion-type pipe-lifting device for a fully hydraulic drilling rig according to claim 2, characterized in that: The connecting frame (2) is provided with bolts (5) inside, which pass through the connecting frame (2) and the connecting plate (4) to fix the position of the connecting plate (4).

4. A torsion-type pipe-lifting device for a fully hydraulic drilling rig according to claim 3, characterized in that: The upper part of the connecting plate (4) is provided with a groove (7), and the bolt (5) passes through the connecting plate (4) through the groove (7).

5. A torsion-type pipe-lifting device for a fully hydraulic drilling rig according to claim 1, characterized in that: The bottom of the lifting device (6) is provided with a bayonet (9).

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