CN112593847A - Underground torsion impact speed-increasing tool - Google Patents

Abstract

The invention discloses a downhole torsion impact accelerating tool which comprises a connecting body, a locking cap, a rotating shaft, a shell, a stator bearing, a rotor impeller, a key, a wear-resistant sleeve, a flow guide bearing, a flow guide shaft, a rotating impact hammer, a valve nozzle, an impact hammer seat, an impact shell and a connecting body, wherein the shell and the impact shell are sequentially connected through threads and are an external shell of the tool; the stator bearing, the rotor impeller and the flow guide bearing are connected with the rotating shaft and are limited by the locking cap; the guide shaft is arranged in the rotary impact hammer and is connected with the rotary shaft through threads; the rotary impact hammer and the impact hammer seat can rotate relatively and are connected in series into a whole through the flow guide shaft. The invention can convert the energy of the drilling fluid into pulse torque impact, and the frequency of the pulse torque impact can be adjusted according to the requirement, thereby effectively reducing the damage of the tool and prolonging the service life of the tool in the pit.

Description

Underground torsion impact speed-increasing tool

Technical Field

The invention relates to the technical field of well acceleration tools in petroleum drilling, in particular to an underground torsion impact acceleration tool.

Background

With the continuous development of petroleum drilling, stick-slip vibration is a common important factor which easily causes the failure of a drilling tool and the reduction of the mechanical drilling speed in the drilling process, and the phenomenon is particularly obvious when drilling deep hard formations, particularly the development of shale gas, and the proportion of horizontal wells, deep wells and ultra-deep wells in the petroleum drilling is larger and larger, so that the drilling difficulty is continuously improved, and the phenomenon is also more and more serious.

At present, the torsion impact accelerating tool which is applied more at home and abroad comprises: the torque impact screw accelerating tool of the NOV and the torque impact accelerating tool of the Torkbuster have the common characteristic of high use cost, the working frequency of the torque impact screw accelerating tool and the torque impact accelerating tool of the Torkbuster is determined by the slurry discharge capacity and cannot be freely adjusted, and when the slurry discharge capacity is increased, the impact frequency is increased, so that the equipment abrasion is accelerated, and the use cost is further increased.

Disclosure of Invention

The present invention is directed to a downhole torsional impact acceleration tool to solve the above problems.

In order to achieve the purpose, the invention provides the following technical scheme: a downhole torsion impact accelerating tool comprises a connecting body, a locking cap, a rotating shaft, a shell, a stator bearing, a rotor impeller, a key, a wear-resistant sleeve, a flow guide bearing, a flow guide shaft, a rotary impact hammer, a valve nozzle, an impact hammer seat and an impact shell, wherein the connecting body, the shell and the impact shell are sequentially connected through threads and are an external shell of the tool; the stator bearing, the rotor impeller and the flow guide bearing are connected with the rotating shaft and are limited by the locking cap; the guide shaft is arranged in the rotary impact hammer and is connected with the rotary shaft through threads; the rotary impact hammer and the impact hammer seat rotate relatively and are connected in series into a whole through the flow guide shaft.

Preferably, the application provides a torque in pit strikes speeder, wherein, stator bearing adopts the TC bearing, the bearing shell is fixed with the casing, the bearing endotheca is fixed with the rotation axis.

Preferably, the application provides a torsional impact speedup tool in pit, wherein, install the key between rotor wheel and the rotation axis, the rotation of rotor wheel drive rotation axis when rotatory rotates.

Preferably, the application provides a torque impact speedup instrument in pit, wherein, rotor wheel and stator bearing all have 5 blades, and the blade direction of rotation divides into three kinds of different angle specifications respectively.

Preferably, this application provides a torsion strikes speed-increasing instrument in pit, wherein, the water conservancy diversion axle upper end has 3 water conservancy diversion holes, and the lower extreme corresponds rotatory percussion hammer position, opens and has 2 outflows mouths.

Preferably, the application provides a torque impact acceleration instrument in pit, wherein, wear-resisting cover is installed in the rotation axis outside.

Preferably, the application provides a downhole torsional impact acceleration tool, wherein, its method of use includes the following steps:

A. when the rotating shaft drives the flow guide shaft to rotate, drilling fluid enters different chambers of the rotary impact hammer, so that the rotary impact hammer is pushed to rotate;

B. when the cavity 1 enters drilling fluid, the rotary impact hammer rotates towards the cavity 2 to impact a primary impact hammer seat;

C. when the cavity 2 enters drilling fluid, the rotary impact hammer rotates towards the cavity 1 and impacts the impact hammer seat once again, and bidirectional repeated impact is realized in cycles.

Compared with the prior art, the invention has the beneficial effects that: the invention can convert the energy of the drilling fluid into pulse torque impact, and the frequency of the pulse torque impact can be adjusted according to the requirement, thereby effectively reducing the damage of the tool and prolonging the service life of the tool in the pit. The tool can convert the energy of the drilling fluid into pulse torque, impact force is generated by the kinetic energy of the drilling fluid, the pulse torque and the steady-state torque generated by a drilling machine system are simultaneously transmitted to the drill bit, the impact force and the steady-state torque are combined, the drilling speed is obviously improved, the harmful vibration of the drill bit in the hard formation drilling process is effectively reduced or eliminated, the drill bit is protected, and the service life of the drill bit is prolonged.

Drawings

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

FIG. 2 is a schematic view of the impact device of the present invention.

In the figure: 1-connector, 2-locking cap, 3-rotating shaft, 4-shell, 5-stator bearing, 6-rotor impeller, 7, rotor connecting key, 8-wear-resistant sleeve, 9-guide bearing, 10-guide shaft, 11-rotary impact hammer, 12-valve nozzle, 13-impact hammer seat and 14-impact shell.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front", "rear", "both ends", "one end", "the other end", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "connected," and the like are to be construed broadly, such as "connected," which may be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-2, the present invention provides a technical solution: a downhole torsion impact accelerating tool comprises a connecting body 1, a locking cap 2, a rotating shaft 3, a shell 4, a stator bearing 5, a rotor impeller 6, a key 7, a wear-resistant sleeve 8, a flow guide bearing 9, a flow guide shaft 10, a rotary impact hammer 11, a valve nozzle 12, an impact hammer seat 13 and an impact shell 14, wherein the connecting body 1, the shell 4 and the impact shell 14 are sequentially connected through threads and are outer shells of the tool; the stator bearing 5, the rotor impeller 6 and the flow guide bearing 9 are all connected with the rotating shaft 3 and limited by the locking cap 2; the diversion shaft 10 is arranged inside the rotary impact hammer 11 and is connected with the rotary shaft through threads; the rotary impact hammer 11 and the impact hammer seat 13 rotate relatively and are connected in series into a whole through a flow guide shaft.

In the invention, the stator bearing 5 adopts a TC bearing, the outer sleeve of the bearing 5 is fixed with the shell 4, the inner sleeve of the bearing 5 is fixed with the rotating shaft 3, and the wear-resistant sleeve 8 is arranged outside the rotating shaft.

In the invention, a key 7 is arranged between a rotor impeller 6 and the rotating shaft 3, and the rotor impeller 6 drives the rotating shaft to rotate when rotating; rotor wheel 6 and stator bearing 5 all have 5 blades, and the blade direction of rotation respectively divide into three kinds of different angle specifications, uses through the stator bearing and the rotor wheel cooperation of different angles, realizes under the different drilling fluid circumstances, the adjustment of rotational speed.

In the invention, the upper end of the guide shaft 10 is provided with 3 guide holes, and the lower end of the guide shaft corresponds to the position of the rotary impact hammer 11 and is provided with 2 outflow ports.

The working principle is as follows: the using method of the invention comprises the following steps:

A. when the rotating shaft drives the flow guide shaft to rotate, drilling fluid enters different chambers of the rotary impact hammer, so that the rotary impact hammer is pushed to rotate;

B. when the cavity 1 enters drilling fluid, the rotary impact hammer rotates towards the cavity 2 to impact a primary impact hammer seat;

C. when the cavity 2 enters drilling fluid, the rotary impact hammer rotates towards the cavity 1 and impacts the impact hammer seat once again, and bidirectional repeated impact is realized in cycles.

In conclusion, the invention can convert the energy of the drilling fluid into pulse torque impact, and the frequency of the pulse torque impact can be adjusted according to the requirements, thereby effectively reducing the damage of the tool and prolonging the service life of the tool in the underground. The tool can convert the energy of the drilling fluid into pulse torque, impact force is generated by the kinetic energy of the drilling fluid, the pulse torque and the steady-state torque generated by a drilling machine system are simultaneously transmitted to the drill bit, the impact force and the steady-state torque are combined, the drilling speed is obviously improved, the harmful vibration of the drill bit in the hard formation drilling process is effectively reduced or eliminated, the drill bit is protected, and the service life of the drill bit is prolonged.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Claims (7)

1. The utility model provides a torsion strikes speed-up instrument in pit which characterized in that: the tool comprises a connecting body (1), a locking cap (2), a rotating shaft (3), a shell (4), a stator bearing (5), a rotor impeller (6), a key (7), a wear-resistant sleeve (8), a guide bearing (9), a guide shaft (10), a rotary impact hammer (11), a valve nozzle (12), an impact hammer seat (13) and an impact shell (14), wherein the connecting body (1), the shell (4) and the impact shell (14) are sequentially connected through threads and are an external shell of the tool; the stator bearing (5), the rotor impeller (6) and the flow guide bearing (9) are connected with the rotating shaft (3) and limited by the locking cap (2); the flow guide shaft (10) is arranged in the rotary impact hammer (11) and is connected with the rotary shaft through threads; the rotary impact hammer (11) and the impact hammer seat (13) rotate relatively and are connected in series into a whole through a flow guide shaft.

2. A downhole torsional shock acceleration tool according to claim 1, characterized in that: the stator bearing (5) adopts a TC bearing, the outer sleeve of the bearing (5) is fixed with the shell (4), and the inner sleeve of the bearing (5) is fixed with the rotating shaft (3).

3. A downhole torsional shock acceleration tool according to claim 1, characterized in that: a key (7) is installed between the rotor impeller (6) and the rotating shaft (3), and the rotating shaft is driven to rotate when the rotor impeller (6) rotates.

4. A downhole torsional shock acceleration tool according to claim 1, characterized in that: the rotor impeller (6) and the stator bearing (5) are provided with 5 blades, and the rotating directions of the blades are respectively divided into three different angle specifications.

5. A downhole torsional shock acceleration tool according to claim 1, characterized in that: the upper end of the flow guide shaft (10) is provided with 3 flow guide holes, and the lower end of the flow guide shaft corresponds to the position of the rotary impact hammer (11) and is provided with 2 flow outlets.

6. A downhole torsional shock acceleration tool according to claim 1, characterized in that: the wear-resistant sleeve (8) is arranged outside the rotating shaft.

7. The use method of the downhole torsional impact acceleration tool for realizing the claim 1 is characterized in that: the using method comprises the following steps:

A. when the rotating shaft drives the flow guide shaft to rotate, drilling fluid enters different chambers of the rotary impact hammer, so that the rotary impact hammer is pushed to rotate;

B. when the cavity 1 enters drilling fluid, the rotary impact hammer rotates towards the cavity 2 to impact a primary impact hammer seat;

C. when the cavity 2 enters drilling fluid, the rotary impact hammer rotates towards the cavity 1 and impacts the impact hammer seat once again, and bidirectional repeated impact is realized in cycles.

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