Drill gauge protection device special for rotary guiding

Abstract

The utility model discloses a drill bit gauge protection device special for rotary guiding, which comprises a drill rod, a gauge protection assembly is rotatably connected outside the drill rod, the gauge protection assembly comprises an upper lantern ring and a lower lantern ring which are rotatably sleeved outside the drill rod, two opposite sides of the upper lantern ring and the lower lantern ring are respectively provided with a limit sleeve, and the limit sleeves are sleeved outside the drill rod. A plurality of guide shaft rods which are annularly distributed at equal intervals are arranged on the outer wall of the limiting sleeve, a plurality of supporting arms which are annularly distributed at equal intervals are welded to the outer wall of the upper lantern ring and the outer wall of the lower lantern ring, adjusting pieces are arranged at the ends of the supporting arms, and supporting plates are installed at the ends of the supporting arms through the adjusting pieces. Reinforcing rods are welded between the connecting arms located on the upper lantern ring and the lower lantern ring. The gauge protection assembly adopted by the utility model can support and limit the position of the drill rod, so that the purpose of keeping the drilling path of the drill bit is achieved, the drill bit is effectively and well protected, and the service life of the drill bit is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling, in particular to a special drill diameter protection device for rotary guidance. Background Art

[0002] With the development of the oil industry, more and more deep wells, ultra-deep wells, high-temperature and high-pressure wells, large-displacement horizontal wells, ultra-short curvature radius wells and other special wells are being developed, and the requirements for drilling tools are becoming higher and higher. Drilling is an important part of oil exploration and development. The main method currently used is rotary drilling, which transmits torque through rotating drill tools to drive the drill bit to rotate, break and cut rocks, drill underground, drill a wellbore of the designed depth, and obtain oil or natural gas. The role of the drill pipe is to transmit the drilling rig torque to the drill bit to achieve drilling, and is responsible for transmitting drilling fluid, and is lifted, lowered and rotated together with the drill bit.

[0003] When using a drill bit to drill underground, the drill rod is easy to tilt due to its long length, causing the drill bit below to tilt or offset, making the outer side of the drill bit unevenly stressed, which can easily cause the drill bit to wear severely. Therefore, it is urgent to design a rotary guide special drill bit diameter protection device to solve the above problem. Utility Model Content

[0004] The utility model aims to provide a rotary guide special drill bit diameter protection device to solve the above-mentioned deficiencies in the prior art.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A special drill bit diameter protection device for rotary guidance comprises a drill rod, the outside of the drill rod is rotatably connected with a diameter protection component, and the diameter protection component comprises an upper ring and a lower ring rotatably sleeved on the outside of the drill rod, limiting sleeves are arranged on opposite sides of the upper ring and the lower ring, a plurality of guide shafts equidistantly distributed in a ring are arranged on the outer wall of the limiting sleeve, a plurality of support arms equidistantly distributed in a ring are welded on the outer walls of the upper ring and the lower ring, and adjusting parts are arranged on the ends of the support arms, support plates are installed on the ends of the support arms through the adjusting parts, and a reinforcing rod is welded between the connecting arms on the upper ring and the lower ring.

[0007] Preferably, a drill bit is fixedly provided on the outer wall of the bottom end of the drill rod, and a connecting portion is provided at the top end of the drill rod.

[0008] Preferably, the guide shaft is threadedly inserted into the interior of the limiting sleeve, and the end of the guide shaft is in rolling contact with the outer surface of the drill rod.

[0009] Preferably, the adjusting member comprises a threaded head arranged at the end of the supporting arm, and an adjusting sleeve is sleeved on the external thread of the threaded head, and the end of the adjusting sleeve is fixedly connected to the supporting plate.

[0010] Preferably, an operating hole with a penetrating structure is opened on the outer wall of one side of the adjusting sleeve, and the operating hole is a square structure.

[0011] Preferably, the number of the reinforcing rods is the same as the number of the supporting arms, and the length of the reinforcing rods is 20-40 cm.

[0012] In the above technical solution, the rotary guide special drill bit diameter protection device provided by the utility model has the following beneficial effects:

[0013] (1) The adopted diameter protection component can support and limit the position of the drill rod, so as to maintain the drilling path of the drill bit, thereby effectively protecting the drill bit and increasing the service life of the drill bit.

[0014] (2) Several diameter-keeping components are arranged on the drill pipe. As the drill bit drills deeper, different numbers of diameter-keeping components can be used, which effectively plays a role of limiting support for the drill pipe. At the same time, the diameter-keeping components composed of upper and lower rings and reinforcing rods have good integrity and are easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0016] Figure 1 A schematic diagram of the structure of installing a diameter protection component on a drill rod, provided in an embodiment of the diameter protection device for rotary steerable drill bits of the utility model.

[0017] Figure 2 A schematic diagram of the structure of a diameter protection component provided for a rotary guide special drill bit diameter protection device according to an embodiment of the utility model.

[0018] Figure 3 A top view of the diameter protection component structure provided for the embodiment of the diameter protection device for rotary guide special drill bit of the utility model.

[0019] 1 drill rod, 2 drill bit, 3 connecting part, 4 diameter protection component, 5 upper collar, 6 lower collar, 7 limit sleeve, 8 guide shaft, 9 support arm, 10 threaded head, 11 adjustment sleeve, 12 support plate, 13 operation hole, 14 reinforcement rod. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] like Figure 1-3 As shown, the rotary guide special drill bit diameter protection device provided by the embodiment of the utility model includes a drill rod 1, the outside of the drill rod 1 is rotatably connected with a diameter protection component 4, and the diameter protection component 4 includes an upper ring 5 and a lower ring 6 rotatably sleeved on the outside of the drill rod 1, and limiting sleeves 7 are arranged on the opposite sides of the upper ring 5 and the lower ring 6, and a plurality of guide shafts 8 equidistantly distributed in a ring are arranged on the outer wall of the limiting sleeve 7, and a plurality of support arms 9 equidistantly distributed in a ring are welded on the outer walls of the upper ring 5 and the lower ring 6, and an adjusting member is arranged at the end of the support arm 9, and a support plate 12 is installed at the end of the support arm 9 through the adjusting member, and a reinforcing rod 14 is welded between the connecting arms 9 on the upper ring 5 and the lower ring 6.

[0022] Specifically, in this embodiment, a drill pipe 1 is included, and a diameter protection component 4 is rotatably connected to the outside of the drill pipe 1. The diameter protection component 4 is rotatably sleeved on the outside of the drill pipe 1. As the drill pipe goes deeper, the diameter protection component 4 achieves the purpose of stably supporting the drill pipe 1, and the diameter protection component 4 includes an upper sleeve 5 and a lower sleeve 6 rotatably sleeved on the outside of the drill pipe 1. The upper sleeve 5 and the lower sleeve 6 are provided with limit sleeves 7 on opposite sides. A plurality of guide shafts 8 equidistantly distributed in an annular shape are provided on the outer wall of the limit sleeve 7. A plurality of support arms 9 equidistantly distributed in an annular shape are welded on the outer walls of the upper sleeve 5 and the lower sleeve 6, and an adjusting member is provided at the end of the support arm 9. A support plate 12 is installed at the end of the support arm 9 through the adjusting member. A reinforcing rod 14 is welded between the connecting arms 9 on the upper sleeve 5 and the lower sleeve 6. The reinforcing rod 14 is used to achieve a fixed connection between the upper sleeve 5 and the lower sleeve 6, so that the integrity of the implementation of the diameter protection component 4 is stronger.

[0023] The rotary guide special drill bit diameter protection device provided by the utility model adopts a diameter protection component 4, which can support and limit the position of the drill rod 1, so as to maintain the drilling path of the drill bit 2, thereby effectively protecting the drill bit 2 and increasing the service life of the drill bit.

[0024] In one embodiment of the present invention, a drill bit 2 is fixedly mounted on the outer wall of the bottom end of the drill rod 1 , and a connecting portion 3 is disposed at the top end of the drill rod 1 , through which multiple drill rods 1 are connected and fixed.

[0025] As another embodiment provided by the utility model, the guide shaft 8 is threadedly inserted into the interior of the limit sleeve 7, and the end of the guide shaft 8 is in rolling contact with the outer surface of the drill rod 1. By utilizing the rotating connection of the guide shaft 8, the diameter protection component 4 can be stably fixed inside the excavated foundation pit, and the internal drill rod 1 can rotate independently.

[0026] As another embodiment provided by the utility model, the adjusting member includes a threaded head 10 arranged at the end of the support arm 9, and the external thread of the threaded head 10 is sleeved with an adjusting sleeve 11, and the end of the adjusting sleeve 11 is fixedly connected to the support plate 12; an operating hole 13 with a through structure is opened on the outer wall of one side of the adjusting sleeve 11, and the operating hole 13 is a square structure.

[0027] In another embodiment provided by the present invention, the number of the reinforcing rods 14 is the same as the number of the supporting arms 9, and the length of the reinforcing rods 14 is 20-40 cm, and the length of the reinforcing rods 14 is preferably 30 cm.

[0028] The above only describes some exemplary embodiments of the present invention by way of illustration. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A rotary guide special drill bit diameter protection device, comprising a drill rod (1), characterized in that: The outside of the drill pipe (1) is rotatably connected to a diameter protection component (4), and the diameter protection component (4) comprises an upper sleeve (5) and a lower sleeve (6) rotatably sleeved on the outside of the drill pipe (1), and limiting sleeves (7) are arranged on opposite sides of the upper sleeve (5) and the lower sleeve (6), and a plurality of guide shafts (8) equidistantly distributed in an annular pattern are arranged on the outer wall of the limiting sleeve (7), and a plurality of support arms (9) equidistantly distributed in an annular pattern are welded to the outer walls of the upper sleeve (5) and the lower sleeve (6), and an adjusting member is arranged at the end of the support arm (9), and a support plate (12) is installed at the end of the support arm (9) through the adjusting member, and a reinforcing rod (14) is welded between the support arms (9) located on the upper sleeve (5) and the lower sleeve (6).

2. The rotary guide drill bit diameter protection device according to claim 1, characterized in that: A drill bit (2) is fixedly arranged on the outer wall of the bottom end of the drill rod (1), and a connecting portion (3) is arranged at the top end of the drill rod (1).

3. The rotary guide drill bit diameter protection device according to claim 1, characterized in that: The guide shaft rod (8) is threadedly inserted into the interior of the limiting sleeve (7), and the end of the guide shaft rod (8) is in rolling contact with the outer surface of the drill rod (1).

4. The rotary guide drill bit diameter protection device according to claim 1, characterized in that: The adjusting member comprises a threaded head (10) arranged at the end of a support arm (9), and an adjusting sleeve (11) is sleeved on the external thread of the threaded head (10), and the end of the adjusting sleeve (11) is fixedly connected to a support plate (12).

5. The rotary guide drill bit diameter protection device according to claim 4, characterized in that: An operating hole (13) with a penetrating structure is provided on the outer wall of one side of the adjusting sleeve (11), and the operating hole (13) is a square structure.

6. The rotary guide drill bit diameter protection device according to claim 1, characterized in that: The number of the reinforcing rods (14) is the same as the number of the supporting arms (9), and the length of the reinforcing rods (14) is 20-40 cm.

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