CN212201942U

CN212201942U - Multifunctional turbulent flow rock carrying tool

Info

Publication number: CN212201942U
Application number: CN202020331993.1U
Authority: CN
Inventors: 祝效华
Original assignee: Southwest Petroleum University
Current assignee: Southwest Petroleum University
Priority date: 2020-03-17
Filing date: 2020-03-17
Publication date: 2020-12-22
Anticipated expiration: 2030-03-17

Abstract

The utility model discloses a multifunctional turbulent flow rock-carrying tool, which comprises a body, wherein the body is a hollow pipe provided with a drilling fluid channel, and the two ends of the body are respectively provided with an upper joint and a lower joint; the outer surface of the body is provided with a flow extending section, a turbulent flow section and a flow guiding section at intervals from top to bottom in sequence; the flow extending section is provided with a first spiral edge; the drainage section is provided with a second spiral edge; the turbulent flow section is provided with a herringbone edge; the surfaces of the spiral edges and the herringbone edges are embedded with broken teeth, and the tooth surfaces are in a spherical tooth shape or a pointed tooth shape. The herringbone ridge is divided into a turbulent flow I section and a turbulent flow II section, and included angles are formed between the two sections and the axis of the tool; the included angle between the turbulent flow I section and the turbulent flow II section is 90-150 degrees. The rotating direction of the first spiral edge is the same as that of the first section of turbulent flow; the spiral direction of the second spiral ridge is the same as that of the second section of the turbulent flow. The utility model can improve the efficiency of removing detritus beds deposited in the shaft in the drilling operation of horizontal wells, extended reach wells and the like; the drill rod has the advantages of simple structure, convenience in operation, high safety, high adaptability and capability of being connected with the conventional drill rod.

Description

Multifunctional turbulent flow rock carrying tool

Technical Field

The utility model relates to an oil drilling field especially relates to a multi-functional turbulent flow of rock cuttings bed carries rock-carrying tool for driving pit shaft.

Background

Along with the continuous development of oil and gas development operation, the exploitation depth and difficulty of oil and gas wells are continuously increased, the well body structure is more and more complex, and special structure wells such as horizontal wells and extended reach wells are increasingly applied. However, one of the difficulties encountered in drilling operations of extended reach wells, horizontal wells and the like is difficulty in carrying rock debris, and due to the particularity of the well body structure, due to the action of gravity in the process of upward returning of rock debris at the well bottom, rock debris beds are easily formed at the horizontal section and the extended slope section, so that downhole accidents such as increase of friction resistance, directional pressure relief, poor pump and sticking are caused. In the drilling process, the rock debris carrying efficiency is improved by adopting the following means of increasing short tripping operation, improving the annular return speed of the drilling fluid, improving the rotating speed of a drill rod, improving the performance of the drilling fluid, mechanically removing and the like, but the drilling efficiency is greatly reduced, and meanwhile, the stability of the well wall and the like can be adversely affected by randomly changing the performance of the drilling fluid. Researchers at home and abroad in recent years propose that a hydraulic mechanical well hole purification device is used for removing the detritus bed, but most of the devices have single functional structure and insufficient hydraulic power, and the effect of removing the detritus bed is not ideal.

SUMMERY OF THE UTILITY MODEL

The utility model aims at: the problem of in the oil drilling field, drilling operation such as horizontal well, extended reach well cuttings bed clearance efficiency is not enough is solved.

In order to realize the above purpose, the utility model discloses a technical scheme:

a multifunctional turbulent flow rock-carrying tool comprises a body, wherein the body is a hollow pipe provided with a drilling fluid channel, the top end of the body is provided with an upper joint, the bottom end of the body is provided with a lower joint, and the outer surface of the body is sequentially provided with a flow delaying section, a turbulent flow section and a flow guiding section at intervals from top to bottom; the flow delaying section is provided with a first spiral edge; the drainage section is provided with a second spiral edge; the turbulent flow section is provided with a herringbone edge; the surface of the first ridge spiral ridge, the surface of the second ridge spiral ridge and the surface of the herringbone ridge are all inlaid with crushing teeth.

Further, the upper joint is provided with an internal thread; and the lower joint is provided with an external thread.

Furthermore, the number of the first spiral edges, the number of the second spiral edges and the number of the herringbone edges are 4-6.

Furthermore, the herringbone ridge comprises a turbulent flow I section and a turbulent flow II section, and included angles are formed between the two sections and the axis of the body; the included angle between the turbulent flow I section and the turbulent flow II section is 90-150 degrees.

Further, the spiral direction of the first spiral ridge is the same as that of the section I of the turbulent flow; the spiral direction of the second spiral ridge is the same as that of the turbulent flow section II.

Furthermore, the tooth surface of the crushing tooth is in a spherical tooth shape or a pointed tooth shape.

Further, the total length of the multifunctional turbulent flow rock carrying tool is 8-10 m.

The beneficial effects of the utility model reside in that:

(1) the efficiency of removing detritus beds deposited in the shaft in the drilling operation of horizontal wells, extended reach wells and the like is improved;

(2) compared with the conventional well purification tool, the utility model integrates the functions of hydraulic power, machinery, rock breaking and the like, and simultaneously, the three-section turbulent flow structure greatly enhances the hydraulic power rock carrying capacity;

(3) simple structure, convenient operation, the security is high, links to each other with current conventional drilling rod, has high suitability.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the tooth surface of the cusp-shaped crushing tooth of the present invention;

FIG. 3 is a schematic structural view of a spherical tooth-shaped broken tooth surface of the present invention;

in the figure: 1. a body; 2. an upper joint; 3. a delay section; 4. a turbulent flow section I; 5. a turbulent flow section II; 6. a drainage section; 7. a lower joint; 8. a turbulent flow section; 9. a first edge spiral edge; 10. a second helical edge; 11. a turbulent section is a herringbone edge; 12. and (5) crushing the teeth.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be further explained with reference to the accompanying drawings. In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

A multifunctional turbulent flow rock carrying tool has the total length of 8-10m, and comprises a body 1, wherein the body 1 is a hollow pipe provided with a drilling fluid channel, as shown in figure 1. An upper connector 2 is arranged at the upper end of the body 1, and internal threads are processed on the upper connector 2 and used for being connected with an upper drill rod. The lower end of the body 1 is provided with a lower joint 7, and an external thread is processed on the lower joint 7 and is used for being connected with a lower drill rod.

The outer surface of the body 1 is sequentially provided with a flow extending section 3, a turbulent flow section 8 and a flow guiding section 6 at intervals from top to bottom; the flow extending section 3 is provided with 4-6 first spiral edges 9; the drainage section 6 is provided with 4-6 second spiral ridges 10; the turbulent flow section 8 is provided with 4-6 herringbone edges 11;

the surfaces of the first spiral edge 9, the second spiral edge 10 and the herringbone edge 11 are all inlaid with crushing teeth 12, as shown in fig. 2, the tooth surfaces of the crushing teeth 12 are in a spherical tooth shape or a pointed tooth shape.

The herringbone ridge 11 is divided into a turbulent flow I section 4 and a turbulent flow II section 5, included angles exist between the turbulent flow I section 4 and the turbulent flow II section 5, and the included angle between the turbulent flow I section 4 and the turbulent flow II section 5 is 90-150 degrees. Meanwhile, the rotating direction of the first spiral ridge 9 is the same as that of the section I4 of the turbulent flow, and the rotating direction of the second spiral ridge 10 is the same as that of the section II 5 of the turbulent flow.

The utility model provides a pair of multi-functional turbulent flow rock-carrying tool, the effect and the beneficial effect that play when using as follows:

in the process of drilling operation, the multifunctional turbulent rock-carrying tool provided by the utility model rotates in the shaft along with the rotation of the whole drill string, and the three-section type special-shaped edge structure mechanically destroys the deposited detritus bed below the shaft and stirs settled sand; meanwhile, the drilling fluid returns to the ground from bottom to top outside the tool, and when the drilling fluid flows through the drainage section 6, the drilling fluid forms a spiral flow under the action of the second spiral edge 10 of the drainage section 6, and the spiral flow can improve the flushing and carrying capacity of the drilling fluid on rock debris; then, the spiral flow enters a turbulent flow II section 5 with the same rotating direction as the second spiral edge 10, the turbulent flow II section 5 strengthens the rotating flow strength of the drilling fluid, and simultaneously generates direction mutation at the corner of the herringbone connected with the turbulent flow I section 4 to form strong turbulent flow, rock debris particles form strong microcosmic collision impact at the corner, and are completely suspended in the drilling fluid after energy is released to generate rock debris suspension, so that the suspension capacity of the drilling fluid to the rock debris is greatly improved;

after the rotational flow direction of the turbulent flow I section 4 is changed, drilling fluid flows out of the turbulent flow section 8 and enters the flow delaying section 3, and the first spiral edge 9 of the flow delaying section 3 is used for extending and reinforcing the reverse spiral flow of the drilling fluid and enhancing the action range of the multifunctional turbulent flow rock carrying tool. When the rock is carried to mechanical stirring, water conservancy, broken tooth 12 can carry out the breakage to the large granule detritus, forms the convenient clearance of tiny granule, and this instrument has greatly improved under the three synergism and has carried the rock efficiency, has strengthened well purification degree, and then has improved drilling efficiency and security.

The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the above embodiments, and that the foregoing embodiments and descriptions are provided only to illustrate the principles of the present invention without departing from the spirit and scope of the present invention. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides a multi-functional turbulent current carries rock instrument, includes body (1), body (1) is the hollow tube that is equipped with the drilling fluid passageway, its characterized in that: the top end of the body (1) is provided with an upper joint (2), the bottom end of the body is provided with a lower joint (7), and the outer surface of the body is sequentially provided with a flow delaying section (3), a turbulent flow section (8) and a flow guiding section (6) at intervals from top to bottom; the flow delaying section (3) is provided with a first spiral edge (9); the drainage section (6) is provided with a second spiral edge (10); the turbulent flow section (8) is provided with a herringbone edge (11); the surfaces of the first spiral edge (9), the second spiral edge (10) and the herringbone edge (11) are inlaid with crushing teeth (12).

2. The multi-functional turbulent rock-carrying tool of claim 1, wherein: the upper joint (2) is provided with an internal thread; and the lower joint (7) is processed with external threads.

3. The multi-functional turbulent rock-carrying tool of claim 1, wherein: the number of the first spiral edges (9), the second spiral edges (10) and the herringbone edges (11) is 4-6.

4. The multi-functional turbulent rock-carrying tool of claim 1, wherein: the herringbone ridge (11) comprises a turbulent flow I section (4) and a turbulent flow II section (5), and included angles are formed between the turbulent flow I section and the turbulent flow II section and the axis of the body (1); the included angle between the turbulent flow I section (4) and the turbulent flow II section (5) is 90-150 degrees.

5. The multi-functional turbulent rock-carrying tool of claim 4, wherein: the spiral direction of the first spiral edge (9) is the same as that of the turbulent flow I section (4); the spiral direction of the second spiral edge (10) is the same as that of the turbulent flow II section (5).

6. The multi-functional turbulent rock-carrying tool of claim 1, wherein: the tooth surface of the crushing tooth (12) is in a spherical tooth shape or a pointed tooth shape.

7. The multi-functional turbulent rock-carrying tool of claim 1, wherein: the total length of the multifunctional turbulent flow rock carrying tool is 8-10 m.