CN118257519A - Hollow multi-head equal wall thickness motor hydraulic oscillator - Google Patents
Hollow multi-head equal wall thickness motor hydraulic oscillator Download PDFInfo
- Publication number
- CN118257519A CN118257519A CN202410366054.3A CN202410366054A CN118257519A CN 118257519 A CN118257519 A CN 118257519A CN 202410366054 A CN202410366054 A CN 202410366054A CN 118257519 A CN118257519 A CN 118257519A
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- Prior art keywords
- head
- hollow
- fan
- rotor
- shaped
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- 230000003068 static effect Effects 0.000 claims abstract description 27
- 239000000956 alloy Substances 0.000 claims abstract description 16
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 16
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 2
- 244000309464 bull Species 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 2
- 230000017525 heat dissipation Effects 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 10
- 238000007789 sealing Methods 0.000 description 6
- 238000006073 displacement reaction Methods 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
Abstract
The invention belongs to the technical field of hydraulic oscillators, and particularly relates to a hollow multi-head equal-wall-thickness motor hydraulic oscillator, which comprises an integrated filter screen joint, a multi-head stator, a multi-head hollow rotor, a hollow alloy nozzle, a fan-shaped movable valve, a fan-shaped static valve and a static valve seat joint, wherein the hollow alloy nozzle is arranged on the hollow multi-head equal-wall-thickness motor hydraulic oscillator; the integrated filter screen joint is installed at one end of the shell, the multi-head stator is installed in the shell, the multi-head hollow rotor is located in the multi-head stator and matched with the multi-head stator, the hollow alloy nozzle is installed at the other end of the multi-head hollow rotor and communicated with the multi-head hollow rotor, the fan-shaped movable valve is located at one side of the hollow alloy nozzle and installed on the multi-head hollow rotor, the fan-shaped static valve is installed on the static valve seat joint, and the static valve seat joint is fixed at the other end of the shell. The device adopts the multi-head equal-wall-thickness motor to replace a single-head conventional motor, the motor rubber swells, expands uniformly, the heat dissipation effect is better, and the work is more stable.
Description
Technical Field
The invention belongs to the technical field of hydraulic oscillators, and particularly relates to a hollow multi-head equal-wall-thickness motor hydraulic oscillator.
Background
The hydraulic oscillator improves the effectiveness of weight on bit transmission in the drilling process through longitudinal vibration generated by the hydraulic oscillator, and reduces friction between the lower drilling tool assembly and the borehole, which means that the hydraulic impact system can improve the transmission of the weight on bit and reduce torsional vibration in the directional drilling process of the screw drilling tool. With the increasing number of large displacement wells and the increasing horizontal displacement, its drilling mode faces greater challenges. Conventional hydraulic oscillators also present challenges in the development of shale gas wells, particularly because they often lock in directional wells, horizontal wells, etc.
Disclosure of Invention
The invention aims to provide a hollow multi-head equal-wall-thickness motor hydraulic oscillator so as to solve the problems in the prior art.
In order to achieve the above purpose, the present invention provides the following technical solutions: a hollow multi-head equal-wall-thickness motor hydraulic oscillator comprises an integrated filter screen joint, a multi-head stator, a multi-head hollow rotor, a hollow alloy nozzle, a fan-shaped movable valve, a fan-shaped static valve and a static valve seat joint; the integrated filter screen joint is installed at one end of the shell, the multi-head stator is installed in the shell, the multi-head hollow rotor is located in the multi-head stator and matched with the multi-head stator, the hollow alloy nozzle is installed at the other end of the multi-head hollow rotor and communicated with the multi-head hollow rotor, the fan-shaped movable valve is located at one side of the hollow alloy nozzle and installed on the multi-head hollow rotor, the fan-shaped static valve is installed on the static valve seat joint, and the static valve seat joint is fixed at the other end of the shell.
Preferably, the front end of the integrated filter screen joint is provided with a bulge, and a plurality of through holes are formed around the bulge.
Preferably, the left end of the multi-head hollow rotor is connected with a positioning plug in a threaded manner, and the positioning plug is in contact fit with the protrusion. The position of the multi-head hollow rotor can be adjusted through the positioning plug, so that the position between the fan-shaped movable valve and the fan-shaped static valve can be adjusted.
Preferably, a space is left between the sector-shaped movable valve and the hollow alloy nozzle.
Preferably, the hollow alloy nozzle is fixed to the multi-head hollow rotor by a circlip through a hole.
Preferably, the water outlets of the fan-shaped movable valve and the fan-shaped static valve are fan-shaped.
The beneficial effects of the invention are as follows:
1. The motor rubber swells and expands uniformly, the heat dissipation effect is better, and the work is more stable;
2. the structure of the hollow rotor and the built-in nozzle is adopted, the application displacement range is wider, and the size adjustment and the distribution of the nozzle can be carried out according to the required frequency under the fixed displacement work;
3. The generated pressure pulse is enhanced by 30% compared with a single head, and the increased length of the working well section is increased to push the continuous oil pipe to reach the required depth;
4. the filter screen and the connector are integrated, the multi-head rotor and the movable valve seat are integrated, and the assembly and the maintenance are convenient.
Drawings
FIG. 1 is a schematic diagram of the upper half of the present invention;
Fig. 2 is a schematic structural view of the lower half of the present invention.
Detailed Description
The following detailed description of the invention refers to the accompanying drawings and preferred embodiments.
1-2, A hollow multi-head equal-wall-thickness motor hydraulic oscillator comprises an integrated filter screen joint 1, a first O-shaped sealing ring 2, a positioning plug 3, a multi-head stator 4, a multi-head hollow rotor 5, a hollow alloy nozzle 6, a hole elastic retainer ring 7, a fan-shaped movable valve 8, a fan-shaped static valve 9, a static valve seat joint 10, a second O-shaped sealing ring 11 and a third O-shaped sealing ring 12; the third O-shaped sealing ring 12 is installed in the static valve seat joint 10; the fan-shaped static valve 9 is installed in the static valve seat joint 10; the second O-shaped sealing ring 11 is arranged in the inner hole of the multi-head hollow rotor 5; the hollow alloy nozzle 6 is arranged in the multi-head hollow rotor 5; the hole elastic retainer ring 7 is arranged in the multi-head hollow rotor 5; the positioning plug 3 is connected with the multi-head hollow rotor 5; the fan-shaped movable valve 8 is arranged in the hollow rotor 5; the multi-head hollow rotor 5 is arranged in the multi-head stator 4; the static valve seat joint 10 is connected with the multi-head stator 4; the first O-shaped sealing ring 2 is arranged on the integrated filter screen joint 1; the integrated filter screen joint 1 is connected with a multi-head stator 4. When the high-pressure drilling fluid of the slurry pump enters the motor assembly through the torsion pulse joint, the rotor is pushed to rotate around the axis of the stator, and the rotating speed and the torque are transmitted to the transmission shaft assembly through the universal shaft assembly and then transmitted to the drill bit for rock breaking and drilling. When the movable valve assembly on the integrated diversion drop-proof rod rotates along with the rotor, the static valve assembly and the movable valve assembly hole are continuously staggered or overlapped, so that the overflow area of drilling fluid flowing through the screw drilling tool is periodically changed, and then pressure pulses are generated at the motor inlet, so that the output torque of the screw drilling tool is improved, and the increase of the output torque is determined by the overflow area of the movable valve assembly and the static valve disc assembly.
The device takes pumped liquid as a power source, and drives the oscillator to axially move so as to drive the underground pipe column to axially reciprocate. The multi-head rotor is driven to rotate with the movable valve through pumping liquid, periodic pressure pulse vibration load is generated, static friction between the pipe column and the well wall is converted into dynamic friction, and further friction resistance and torque of the underground pipe column in advancing are reduced, so that weight on bit is effectively transmitted, and the running depth of the continuous oil pipe is improved.
Through optimization of fluid and mechanical structures, the tool has the functions of hydraulic pressure pulse, frequency modulation, pressure regulation and discharge capacity adjustment during working, the pressure pulse is improved by 20% -30%, and the hollow multi-head equal-wall-thickness motor hydraulic oscillator is wide in application range and better in efficiency. The tool can be used in the lowering operation of logging tools, perforating guns, millable composite bridge plugs and other tools, and can also be used for solving the problem of clamping of an oil pipe sliding sleeve at the tail end of a curved completion pipe string. Also, the device can be used for lowering and recovering tail pipes/sleeves meeting the clamping.
It should be noted that modifications and adaptations to the present invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be comprehended within the scope of the present invention.
Claims (6)
1. A hollow multi-head equal-wall-thickness motor hydraulic oscillator is characterized in that: the device comprises an integrated filter screen joint, a multi-head stator, a multi-head hollow rotor, a hollow alloy nozzle, a fan-shaped movable valve, a fan-shaped static valve and a static valve seat joint; the integrated filter screen joint is installed at one end of the shell, the multi-head stator is installed in the shell, the multi-head hollow rotor is located in the multi-head stator and matched with the multi-head stator, the hollow alloy nozzle is installed at the other end of the multi-head hollow rotor and communicated with the multi-head hollow rotor, the fan-shaped movable valve is located at one side of the hollow alloy nozzle and installed on the multi-head hollow rotor, the fan-shaped static valve is installed on the static valve seat joint, and the static valve seat joint is fixed at the other end of the shell.
2. The hollow multi-headed equal wall thickness motor hydraulic oscillator of claim 1, wherein: the front end of the integrated filter screen joint is provided with a bulge, and a plurality of through holes are formed in the periphery of the bulge.
3. The hollow multi-headed equal wall thickness motor hydraulic oscillator of claim 1, wherein: the left end threaded connection of bull cavity rotor has the position adjustment plug, the position adjustment plug with protruding contact cooperation.
4. The hollow multi-headed equal wall thickness motor hydraulic oscillator of claim 1, wherein: a space is reserved between the fan-shaped movable valve and the hollow alloy nozzle.
5. The hollow multi-headed equal wall thickness motor hydraulic oscillator of claim 1, wherein: the hollow alloy nozzle is fixed on the multi-head hollow rotor through holes by using elastic check rings.
6. The hollow multi-headed equal wall thickness motor hydraulic oscillator of claim 1, wherein: the water outlets of the fan-shaped movable valve and the fan-shaped static valve are fan-shaped.
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN118257519A true CN118257519A (en) | 2024-06-28 |
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