CN107956423B - Vortex oscillating jet flow pressure pulse drag reduction tool - Google Patents
Vortex oscillating jet flow pressure pulse drag reduction tool Download PDFInfo
- Publication number
- CN107956423B CN107956423B CN201711369430.0A CN201711369430A CN107956423B CN 107956423 B CN107956423 B CN 107956423B CN 201711369430 A CN201711369430 A CN 201711369430A CN 107956423 B CN107956423 B CN 107956423B
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- vortex
- oscillator
- jet
- jet flow
- eddy
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- 238000007789 sealing Methods 0.000 claims abstract description 6
- 230000010355 oscillation Effects 0.000 claims abstract description 5
- 238000005553 drilling Methods 0.000 claims description 9
- 239000012530 fluid Substances 0.000 claims description 8
- 239000000956 alloy Substances 0.000 claims description 4
- JPNWDVUTVSTKMV-UHFFFAOYSA-N cobalt tungsten Chemical compound [Co].[W] JPNWDVUTVSTKMV-UHFFFAOYSA-N 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 230000003628 erosive effect Effects 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/24—Drilling using vibrating or oscillating means, e.g. out-of-balance masses
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B28/00—Vibration generating arrangements for boreholes or wells, e.g. for stimulating production
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/04—Directional drilling
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
- Apparatuses For Generation Of Mechanical Vibrations (AREA)
Abstract
The invention relates to an eddy current oscillation jet flow pressure pulse drag reduction tool, which is characterized in that an upper joint is connected with an outer pipe through threads, the other end of the outer pipe is connected with a lower joint through threads, an eddy current jet flow oscillator is arranged between the upper joint and the lower joint in the outer pipe, the upper end of the eddy current jet flow oscillator is contacted with the upper joint and is sealed by a sealing ring, the lower end of the eddy current jet flow oscillator is contacted with the lower joint and is tightly pressed, the eddy current jet flow oscillator is buckled by a bottom plate and a cover plate and is connected through bolt fastening, and the eddy current oscillation tool comprises a jet flow oscillator inlet, two jet flow oscillator control channels or jet flow oscillator control cavities, two jet flow oscillator output channels, an eddy current amplifier radial low-resistance channel and a tangential high-resistance channel, an eddy current cavity and an eddy current cavity outlet. The invention has simple and compact structure, only one main part, no moving parts and good adaptability to complex conditions; the average pressure drop and the oscillation frequency of the system are changed by changing the width of the nozzle at the inlet of the jet oscillator, so that the requirements of different working conditions are met.
Description
Technical Field
The invention relates to an oscillating drag reduction tool for drilling, in particular to a downhole pressure pulse drag reduction tool for the directional drilling fields such as a large-displacement well, a horizontal well and the like.
Background
The pressure pulse drag reduction tool provides an important technical method for solving the drilling problems of large friction torque, difficult weight on bit transmission, low drilling efficiency and the like in directional drilling of large-displacement wells, large-inclination wells, horizontal wells and the like, greatly improves the drilling efficiency and shortens the oil and gas resource exploration and development period.
The existing pressure pulse drag reduction tool mainly adopts a rotary valve pulse principle, and the flow area of a valve changes periodically at different moments, so that pressure pulses are generated, the vibration part of the tool is driven to do periodic telescopic motion in the axial direction, the friction mode between a drill rod and a well wall is changed, and the drilling efficiency is improved. However, the tool has complex structure, more parts which are easy to damage, serious erosion of parts such as a stator, an impeller rotor and the like during working, weak erosion resistance and limited service life.
Disclosure of Invention
Aiming at the problems of complex structure and low service life of various existing oscillating drag reduction tools, the invention provides an eddy current oscillating jet flow pressure pulse drag reduction tool.
The invention aims at realizing the following technical scheme:
the vortex oscillating jet flow pressure pulse drag reduction tool is formed by connecting an upper joint with an outer pipe through threads, connecting the outer pipe with a lower joint through threads, and arranging a vortex jet flow oscillator between the upper joint and the lower joint in the outer pipe; the upper end of the vortex-type jet flow oscillator is contacted with the upper joint and sealed by a sealing ring, and the lower end of the vortex-type jet flow oscillator is contacted with the lower joint and tightly pressed; the vortex type jet flow oscillator is characterized in that the vortex type jet flow oscillator is formed by buckling a bottom plate and a cover plate and is connected through bolt fastening, a jet flow oscillator inlet of a nozzle structure is arranged at the top of the center of the vortex type jet flow oscillator, two jet flow oscillator control channels or jet flow oscillator control cavities are arranged on the left side and the right side of the jet flow oscillator inlet, two jet flow oscillator output channels are arranged below the jet flow oscillator inlet and are respectively communicated with a radial low-resistance channel of the vortex amplifier and a tangential high-resistance channel of the vortex amplifier, the radial low-resistance channel of the vortex amplifier and the tangential high-resistance channel of the vortex amplifier are both communicated with a vortex cavity, vortex cavity outlets are formed in the center of the arc outline of the vortex cavity, two emptying channels are formed between the outer tube and the bottom plate respectively, and the vortex cavity outlets are communicated with the emptying channels.
Preferably, the joint surface between the bottom plate and the cover plate is finished to a surface roughness of 0.8 μm or less.
Preferably, the bottom plate and the cover plate are integrally manufactured by adopting tungsten-cobalt hard alloy materials.
Preferably, the fluid medium used by the pressure pulse generator is drilling mud, gas or foam.
Optionally, one vortex chamber outlet is provided on each of the base plate and the cover plate, or a single vortex chamber outlet is provided on one of the base plate or the cover plate.
Alternatively, the vortex chamber outer profile may be an arc or an elliptical arc.
Working principle: the fluid medium enters the jet oscillator inlet through the upper joint central channel, is randomly deflected to one side and enters the jet oscillator output channel on one side after being accelerated by the nozzle, the jet cannot stabilize the coanda and one side due to the control flow action in the jet oscillator control channel or the control cavity, so that jet self-oscillation is formed, when the fluid medium enters the vortex amplifier radial low-resistance channel from the jet oscillator output channel on one side, then enters the vortex cavity, enters the emptying channel from the vortex cavity outlet and then enters the lower joint central channel, the throttling action of the vortex cavity is smaller, the fluid resistance is lower, the system pressure is lower, and when the fluid medium enters the vortex amplifier tangential high-resistance channel from the jet oscillator output channel on one side, then enters the vortex cavity, and enters the emptying channel from the vortex cavity outlet and then enters the lower joint central channel, the throttling action of the vortex cavity is larger, the fluid resistance is higher, and the system pressure drop is higher, and due to the self-oscillation characteristic of the jet oscillator, the two processes periodically and alternately occur, so that periodic pressure fluctuation is caused, and pressure pulses are formed.
The invention has simple and compact structure, only one main part, no moving parts and good adaptability to complex conditions; the average pressure drop and oscillation frequency of the system can be changed by changing the nozzle width at the inlet of the jet oscillator; the hard material of hard alloy is adopted to manufacture the alloy with good erosion resistance.
Drawings
FIG. 1 is a schematic diagram of a vortex oscillating jet pressure pulse drag reduction tool;
FIG. 2 is a cross-sectional view A-A of FIG. 1;
fig. 3 is a structural diagram of a second embodiment of the present invention.
The device comprises an upper connector, a 2 outer tube, a 3 vortex type jet oscillator, a 4 lower connector, a 5 bottom plate, a 6 cover plate and a 7 concave vortex type jet oscillator.
I-upper joint central fluid passage; II, jet oscillator inlet; III, controlling a jet oscillator; IV, jet oscillator output channel; v-vortex amplifier radial low resistance channel; VI, a tangential high-resistance passage of the vortex amplifier; VII-vortex chamber; VIII-vortex chamber outlet; IX-lower joint central passage; x-evacuation; XI-fluidic oscillator control chamber.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples.
In fig. 1, an upper joint 1 is connected with an outer tube 2 through threads, and an upper joint central channel I is arranged in the middle of the inside of the upper joint 1; the outer tube 2 is connected with the lower joint 4 through threads, and a lower joint central channel IX is arranged in the lower joint 4; an eddy-current jet oscillator 3 is arranged between the upper joint 1 and the lower joint 4 inside the outer tube 2; the upper end of the vortex type jet flow oscillator 3 is contacted with the upper joint 1 and sealed by a sealing ring, and the lower end of the vortex type jet flow oscillator 3 is contacted with the lower joint 4 and pressed; the vortex type jet flow oscillator 3 is buckled by a bottom plate 5 and a cover plate 6 and is fixedly connected through bolts, the vortex type jet flow oscillator 3 mainly comprises a jet flow oscillator inlet II, two jet flow oscillator control channels III or jet flow oscillator control cavities XI, two jet flow oscillator output channels IV, a vortex amplifier radial low-resistance channel V, a vortex amplifier tangential high-resistance channel VI, a vortex cavity VII and a vortex cavity outlet VIII, wherein the jet flow oscillator inlet II is communicated with an upper joint central channel I, the lower ends of the two jet flow oscillator output channels IV are respectively communicated with the upper ends of the vortex amplifier radial low-resistance channel V and the vortex amplifier tangential high-resistance channel VI, and the lower ends of the vortex amplifier radial low-resistance channel V and the vortex amplifier tangential high-resistance channel VI are both communicated with the vortex cavity VII; two emptying channels X are respectively formed between the outer tube 2 and the bottom plate 5 and the cover plate 6, and the vortex cavity VII is communicated with the emptying channels X through the vortex cavity outlet VIII; the evacuation line X communicates with the lower joint central passage IX.
Example 1
Fig. 1 shows a first implementation form according to the invention, comprising an upper joint 1 connected with an outer tube 2 by threads, the outer tube 2 connected with a lower joint 4 by threads, a vortex-type jet oscillator 3 between the upper joint 1 and the lower joint 4 inside the outer tube 2, the vortex-type jet oscillator 3 mainly comprising a jet oscillator inlet II, two jet oscillator control channels III, two jet oscillator output channels IV, a vortex amplifier radial low resistance channel V, a vortex amplifier tangential high resistance channel VI, a vortex chamber VII and a vortex chamber outlet VIII, the upper end of the vortex-type jet oscillator 3 being in contact with the upper joint 1 and sealed with a sealing ring, the lower end of the vortex-type jet oscillator 3 being in contact with the lower joint 4 and compressed.
Example 2
Fig. 3 shows a second implementation form according to the invention, comprising an upper joint 1 connected with an outer tube 2 by screw threads, the outer tube 2 connected with a lower joint 4 by screw threads, a vortex-type jet oscillator 3 between the upper joint 1 and the lower joint 4 inside the outer tube 2, the vortex-type jet oscillator 3 mainly comprising a jet oscillator inlet II, two jet oscillator control chambers XI, two jet oscillator output channels IV, a vortex amplifier radial low resistance channel V, a vortex amplifier tangential high resistance channel VI, a vortex chamber VII and a vortex chamber outlet VIII, the upper end of the vortex-type jet oscillator 3 being in contact with the upper joint 1 and sealed with a sealing ring, the lower end of the vortex-type jet oscillator 3 being in contact with and compressed against the lower joint 4.
Claims (6)
1. The utility model provides an vortex oscillation jet pressure pulse drag reduction instrument which characterized in that: the upper joint is connected with the outer pipe through threads, the other end of the outer pipe is connected with the lower joint through threads, an eddy-current type jet oscillator is arranged between the upper joint and the lower joint in the outer pipe, the upper end of the eddy-current type jet oscillator is contacted with the upper joint and sealed by a sealing ring, the lower end of the eddy-current type jet oscillator is contacted with the lower joint and tightly pressed, the eddy-current type jet oscillator is buckled by a bottom plate and a cover plate and is fixedly connected through bolts, a jet oscillator inlet with a nozzle structure is arranged at the center top of the eddy-current type jet oscillator, two jet oscillator control channels or jet oscillator control cavities are arranged at the left side and the right side of the jet oscillator inlet, two jet oscillator output channels are arranged below the jet oscillator control channel inlet, or two jet oscillator control cavity output channels are arranged below the jet oscillator control cavity inlet, the output channels are respectively communicated with a radial low-resistance channel of the eddy amplifier and a tangential high-resistance channel of the eddy amplifier, the radial low-resistance channel of the eddy amplifier and the tangential high-resistance channel of the eddy amplifier are respectively communicated with the eddy cavity, an eddy cavity outlet is arranged in the center of the circular arc profile of the eddy cavity, two vortex cavity evacuation channels are respectively formed between the two vortex cavity evacuation channels and the outer pipe.
2. The vortex oscillating jet pressure pulse drag reducing tool of claim 1, wherein: the surface roughness of the joint surface between the bottom plate and the cover plate is lower than 0.8 μm.
3. The vortex oscillating jet pressure pulse drag reducing tool of claim 1, wherein: the bottom plate and the cover plate are integrally made of tungsten-cobalt hard alloy materials.
4. The vortex oscillating jet pressure pulse drag reducing tool of claim 1, wherein: the fluid medium used by the pressure pulse resistance reducing tool is drilling mud, gas or foam.
5. The vortex oscillating jet pressure pulse drag reducing tool of claim 1, wherein: the bottom plate and the cover plate are respectively provided with a vortex cavity outlet, or one of the bottom plate and the cover plate is provided with a single vortex cavity outlet.
6. The vortex oscillating jet pressure pulse drag reducing tool of claim 1, wherein: the outer contour of the vortex cavity is an arc or an elliptical arc.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711369430.0A CN107956423B (en) | 2017-12-19 | 2017-12-19 | Vortex oscillating jet flow pressure pulse drag reduction tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711369430.0A CN107956423B (en) | 2017-12-19 | 2017-12-19 | Vortex oscillating jet flow pressure pulse drag reduction tool |
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| Publication Number | Publication Date |
|---|---|
| CN107956423A CN107956423A (en) | 2018-04-24 |
| CN107956423B true CN107956423B (en) | 2024-04-05 |
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| CN201711369430.0A Active CN107956423B (en) | 2017-12-19 | 2017-12-19 | Vortex oscillating jet flow pressure pulse drag reduction tool |
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| CN110043191A (en) * | 2019-04-23 | 2019-07-23 | 西南石油大学 | It can produce the fluidic oscillation tool of axial compressive force pulse |
| CN110424933A (en) * | 2019-08-15 | 2019-11-08 | 东营市元捷石油机械有限公司 | A kind of oil increasing device |
| CN110559895A (en) * | 2019-09-20 | 2019-12-13 | 中南大学 | Oscillating jet type micro-nano bubble generating device |
| CN113309512A (en) * | 2021-05-25 | 2021-08-27 | 吉林大学 | Erosion-resistant corrosion-resistant hard alloy mud pulse generator rotor and preparation method thereof |
| CN113236214B (en) * | 2021-06-05 | 2022-02-25 | 西南石油大学 | Self-excitation type pulse type vortex underground discharging and extracting tool |
| CN113756722B (en) * | 2021-09-29 | 2022-07-26 | 中南大学 | Oscillating jet type pressure pulse generator |
| CN113953132B (en) * | 2021-10-20 | 2022-07-29 | 中南大学 | Hydraulic jet oscillator element |
| CN113863861B (en) * | 2021-10-22 | 2024-08-23 | 中南大学 | Single feedback channel vortex cavity type pressure pulse generating device |
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