Sand cleaning and wall breaking pup joint tool

Abstract

A sand-cleaning wall-breaking pup joint tool relates to the technical field of well drilling construction and comprises a pipe body, and two ends of the pipe body are respectively provided with a joint with internal threads and a joint with external threads. A wall breaking main body is arranged in the middle of the pipe body, a plurality of straightway grooves are formed in the periphery of the wall breaking main body at equal intervals, and a row of alloy columns are arranged at the upper end of the edge of each straightway groove; sand cleaning bodies are arranged on the two sides of the wall breaking body, a plurality of sand cleaning grooves are formed in the sand cleaning bodies, the number of the sand cleaning grooves is equal to that of the straight grooves, and the two ends of the straight grooves are communicated with the sand cleaning grooves in the two sides of the straight grooves respectively. The length of the tool is a short circuit, and the tool is low in production cost and high in practicability.

Description

Technical Field

[0001] The utility model relates to the technical field of drilling construction, in particular to a sand cleaning, wall breaking and short-circuiting tool. Background Art

[0002] The drill string is the general term for the steel pipe string above the drill bit and below the faucet. Its main body includes downhole tools such as kelly, drill pipe, drill collar, various connecting joints and stabilizers. The drill string is an important tool for drilling.

[0003] During the drilling process, the well wall will bulge due to the bottom pressure, which can easily cause the drill to get stuck. In addition, sand and silt often accumulate in the mud during the flow of horizontal well sections, which can also cause the drill to get stuck. When the drill gets stuck seriously, the wellbore will be abandoned and the lower half of the drill string cannot be salvaged. Utility Model Content

[0004] In view of the above deficiencies in the prior art, the purpose of the present invention is to provide a sand-clearing and wall-breaking short-circuit tool that can solve the drill sticking problem caused by well wall protrusions and the drill sticking problem caused by sand accumulation during drilling.

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

[0006] A sand cleaning and wall breaking short-circuit tool comprises a tube body, with a joint with an internal thread and a joint with an external thread respectively provided at both ends of the tube body; a wall breaking body is provided in the middle of the tube body, with a plurality of straight grooves equidistantly provided on the outer circumference of the wall breaking body, and a row of alloy columns is provided on the upper end of the edge of each straight groove; a sand cleaning body is provided on both sides of the wall breaking body, with a plurality of sand cleaning grooves provided on the sand cleaning body, the number of the sand cleaning grooves being equal to the number of the straight grooves, and the two ends of the straight grooves are respectively connected to the sand cleaning grooves on both sides.

[0007] Preferably, the sand cleaning groove is spirally arranged on the outer wall of the sand cleaning body.

[0008] Preferably, the outer diameter of the wall-breaking body is larger than the outer diameter of the sand-cleaning body, and the outer diameter of the sand-cleaning body is larger than the outer diameter of the tube body.

[0009] Preferably, a wear-resistant belt is welded on the outer wall of the joint.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: the wall-breaking and sand-cleaning short-circuit tool of the present invention grinds the raised layer of the well wall by arranging alloy columns on the wall-breaking body, thereby effectively preventing the drill from getting stuck; by arranging a spiral sand-cleaning groove on the sand-cleaning body, and the sand-cleaning groove is connected to the straight groove, the laminar drilling fluid can change the flow state of the drilling fluid when passing through the tool, from laminar flow to turbulent flow, stirring up the sediment at the bottom of the well, making the sediment easily carried by the drilling fluid, and at the same time, the flow rate of the drilling fluid is accelerated when passing through the tool, thereby further improving the rock-carrying capacity of the drilling fluid, and the tool plays the role of cleaning the well wall and carrying sand. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is an enlarged view of the middle part of the tube body of the present invention.

[0014] Description of reference numerals:

[0015] 1- pipe body, 2- joint, 3- wall breaking body, 4- straight groove, 5- alloy column, 6- sand cleaning body, 7- sand cleaning groove, 8- wear-resistant belt. DETAILED DESCRIPTION

[0016] The following describes the invention of the present invention in detail by way of examples in conjunction with the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Example

[0017] like Figures 1 to 2 As shown, the utility model discloses a sand cleaning and wall breaking short-circuiting tool, comprising a tube body 1, with a joint 2 with an internal thread and a joint 2 with an external thread welded at both ends of the tube body 1, and a wear-resistant belt 8 welded on the outer wall of the joint 2; a wall breaking body 3 is provided in the middle of the tube body 1, and three straight grooves 4 are equidistantly opened on the outer periphery of the wall breaking body 3, and a row of alloy columns 5 are provided on the upper end of the edge of each straight groove 4; sand cleaning bodies 6 are provided on both sides of the wall breaking body 3, and three sand cleaning grooves 7 are spirally arranged on the outer wall of the sand cleaning body 6, and the two ends of the three straight grooves 4 are respectively connected to the three sand cleaning grooves 7 on both sides thereof.

[0018] Furthermore, in this embodiment, the outer diameter of the wall-breaking body 3 is larger than the outer diameter of the sand-cleaning body 6 , and the outer diameter of the sand-cleaning body 6 is larger than the outer diameter of the tube body 1 .

[0019] When in use, the tool is connected to the drill string, and the rotation of the drill string drives the sand cleaning and wall breaking short-circuit tool to rotate. The alloy column 5 on the tool grinds the protrusions on the well wall, avoiding the drill sticking phenomenon; the sand cleaning groove 7 on the sand cleaning body 6 is connected with the straight groove 4. When the laminar drilling fluid passes through the tool, the flow state of the drilling fluid can be changed from laminar flow to turbulent flow, stirring up the sediment at the bottom of the well, making the sediment easily carried by the drilling fluid, and also avoiding the drill sticking phenomenon.

[0020] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and application concept of the present invention, should be covered by the protection scope of the present invention.

Claims

1. A sand cleaning and wall breaking short-circuiting tool, comprising a tube body (1), wherein two ends of the tube body (1) are respectively provided with a joint (2) with an internal thread and a joint (2) with an external thread; the characteristics are: A wall-breaking body (3) is provided in the middle of the tube body (1), and a plurality of straight grooves (4) are equidistantly provided on the outer periphery of the wall-breaking body (3), and a row of alloy columns (5) are provided on the upper end of the edge of each straight groove (4); a sand-cleaning body (6) is provided on both sides of the wall-breaking body (3), and a plurality of sand-cleaning grooves (7) are provided on the sand-cleaning body (6), and the number of the sand-cleaning grooves (7) is equal to the number of the straight grooves (4), and both ends of the straight groove (4) are respectively connected to the sand-cleaning grooves (7) on both sides thereof.

2. A sand-cleaning, wall-breaking, short-circuiting tool as claimed in claim 1, characterized in that: The sand cleaning groove (7) is spirally arranged on the outer wall of the sand cleaning body (6).

3. A sand-cleaning, wall-breaking, short-circuiting tool as claimed in claim 1, characterized in that: The outer diameter of the wall-breaking body (3) is larger than the outer diameter of the sand-cleaning body (6), and the outer diameter of the sand-cleaning body (6) is larger than the outer diameter of the tube body (1).

4. The sand-clearing, wall-breaking and short-circuiting tool according to claim 1, characterized in that: A wear-resistant strip (8) is welded on the outer wall of the joint (2).

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