CN207660545U - Down-hole pressure impulse generator - Google Patents
Down-hole pressure impulse generator Download PDFInfo
- Publication number
- CN207660545U CN207660545U CN201721788477.6U CN201721788477U CN207660545U CN 207660545 U CN207660545 U CN 207660545U CN 201721788477 U CN201721788477 U CN 201721788477U CN 207660545 U CN207660545 U CN 207660545U
- Authority
- CN
- China
- Prior art keywords
- generating device
- road
- pressure pulse
- pulse generating
- lower contact
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn - After Issue
Links
- 238000007789 sealing Methods 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 8
- 238000005553 drilling Methods 0.000 claims description 6
- 229910008947 W—Co Inorganic materials 0.000 claims description 2
- 239000006260 foam Substances 0.000 claims description 2
- 239000000463 material Substances 0.000 claims description 2
- 230000003746 surface roughness Effects 0.000 claims description 2
- 230000010355 oscillation Effects 0.000 abstract description 3
- 239000000956 alloy Substances 0.000 abstract description 2
- 229910045601 alloy Inorganic materials 0.000 abstract description 2
- 230000003628 erosive effect Effects 0.000 abstract description 2
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000003913 materials processing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
Landscapes
- Fluid-Pressure Circuits (AREA)
Abstract
Down-hole pressure impulse generator, the utility model outer tube is connected between top connection and lower contact, it is pressure pulse generating device between outer tube top connection and lower contact, pressure pulse generating device upper end contacts with top connection and sealed with sealing ring, and lower end contacts and compresses with lower contact；The pressure pulse generating device is fastened and is bolted connection by bottom plate and cover board, pressure pulse generating device includes a nozzle arrangements fluidic oscillator entrance, two fluidic oscillators control road, two fluidic oscillators control road channel, one signal road, one is put down attached wall surface, a recessed attached wall surface, a vortex cavity and vortex cavity export mixes.The utility model is simple in structure, compact, part is an entirety, and no any movement parts, complex conditions adaptability are good；System oscillation frequency and pressure drop can be changed by changing fluidic oscillator inlet nozzle width and signal road length；It is good using hard alloy stiff materials processing and manufacturing erosive wear resistance.
Description
Technical field
The utility model is related to a kind of down-hole pressure pulse generation tools, are especially used for oil/gas drilling, no-dig technique drilling well
Equal fields middle-deep well, ultradeep well, directed drilling down-hole pressure impulse tool.
Background technology
Pressure pulse generator can not only generate pressure pulse wave act on bottom hole be conducive to remove shaft bottom landwaste, formed
The instantaneous negative pressure in shaft bottom improves rate of penetration, and can act on vibration Telescopic short piece, forms axial vibration to reduce drill string
The frictional resistance between hole wall, the backing pressure of reduction, glutinous card problem, improves drilling efficiency.
Existing bottom pressure pulse generating tool generally existing is complicated, complex conditions bad adaptability, the service life is low, shakes
The problem of dynamic frequency and pulse adjustability difference, does not obtain large-scale application.
Invention content
The purpose of this utility model is to provide a kind of underground simple in structure, service life is long, pressure, frequency are easy to adjust
Pressure pulse generator.
The purpose of this utility model is achieved through the following technical solutions：
Down-hole pressure impulse generator is connect with outer tube by screw thread by top connection, and outer tube passes through screw thread and lower contact
Connection is pressure pulse generating device between outer tube top connection and lower contact；Pressure pulse generating device upper end with above connect
Head is contacted and is sealed with sealing ring, and pressure pulse generating device lower end contacts and compresses with lower contact；The pressure pulse occurs
Element is fastened and is bolted connection by bottom plate and cover board, and pressure pulse generating device shakes including a nozzle arrangements jet stream
Device entrance is swung, pressure pulse generating device center top is located at, it is left to set that there are one fluidic oscillators on the left of fluidic oscillator entrance
Road is controlled, right side is set there are one the right control road of fluidic oscillator, and signal road is arranged on bottom plate extrados, the right control of fluidic oscillator
Road processed is connected to by right control road channel with signal road, and the left control road of fluidic oscillator is connected by left control road channel and signal road
It is logical, it is set below fluidic oscillator entrance there are one attached wall surface and a recessed attached wall surface is put down, is vortex cavity below two attached wall surfaces,
Vortex cavity arc profile center is exported equipped with vortex cavity.
Preferably, the fluid media (medium) which uses is drilling mud, gas or foam.
Preferably, faying face passes through Precision Machining to 0.8 μm of surface roughness or less between bottom plate and cover board.
Preferably, bottom plate and cover board integrally use W-Co kind cemented carbide material to fabricate.
Preferably, signal road is arranged on bottom plate extrados, and length can be adjusted freely on demand, and structure type is not limited to
S type structures in figure.
Change fluidic oscillator inlet nozzle width and signal road length to change system oscillation frequency and pressure drop.
Operation principle：Fluid media (medium) enters fluidic oscillator entrance by top connection central passage, after being accelerated by nozzle
Random amesiality attached wall surface makes jet stream that can not stablize attached wall since fluidic oscillator signal road internal flow acts on control road
With side and form jet stream self-oscillation, when the attached wall of fluid media (medium) is in flat attached wall surface, vortex is entered with the direction for approaching radial
Chamber, and from vortex cavity outlet enter emptying road enter back into lower contact central passage when, vortex cavity throttling action is smaller, fluid
Resistance is relatively low, and system pressure drop is relatively low, and when the attached wall of fluid media (medium) is in recessed attached wall surface, vortex is entered to approach tangential direction
Chamber, and from vortex cavity outlet enter emptying road enter back into lower contact central passage when, vortex cavity throttling action is larger, fluid
Resistance is higher, and system pressure drop is higher, due to the self-oscillation characteristic of fluidic oscillator, the two Period Process is made alternately to go out
It is existing, it is fluctuated so as to cause periodic pressure, forms pressure pulse.
The utility model is simple in structure, compact, major part only there are one, no any movement parts, complex conditions are fitted
Answering property is good；Can by change fluidic oscillator inlet nozzle width and signal road length change system oscillation frequency and
Pressure drop；It is good using hard alloy stiff materials processing and manufacturing erosive wear resistance.
Description of the drawings
Fig. 1 is down-hole pressure impulse generator structure chart；
Fig. 2 is A-A sectional views in Fig. 1；
Fig. 3 is bottom plate extrados structure chart.
1 top connection, 2 outer tubes, 3 fluidic oscillators, 4 lower contacts, 5 bottom plates, 6 cover boards.
I-top connection central fluid channel；II-fluidic oscillator entrance；The right control road of III-fluidic oscillator；Ⅳ—
The left control road of fluidic oscillator；V-puts down attached wall surface；VI-recessed attached wall surface；VII-vortex cavity；VIII-lower contact central passage；
Ⅸ-vortex cavity exports；Ⅹ-bottom plate extrados；Ⅺ-emptying road；Ⅻ-signal road；The left control road channels X III-；X IV-is right
Control road channel.
Specific implementation mode
The utility model is described in further detail with reference to the accompanying drawings and examples.
In Fig. 1, top connection 1 is connect by screw thread with outer tube 2, and 1 inside middle part of top connection is equipped with top connection central passage I；
Outer tube 2 is connect by screw thread with lower contact 4, and lower contact 4 is internally provided with lower contact central passage VIII；2 inside top connection 1 of outer tube with
It is pressure pulse generating device 3 between lower contact 4；3 upper end of pressure pulse generating device contacts and close with sealing ring with top connection 1
Envelope, 3 lower end of pressure pulse generating device contacts and compresses with lower contact 4；Pressure pulse generating device 3 is that interference is matched with outer tube 2
It closes, pressure pulse generating device 3 is fastened and is bolted connection by bottom plate 5 and cover board 6, and pressure pulse generating device 3 wraps
Include a fluidic oscillator entrance II, the right control road III of a fluidic oscillator, a right control road channel X IV, a jet stream
The left control road IV of oscillator, a left control road channel X III, a signal road Ⅻ, a flat attached wall surface V, a recessed attached wall surface
VI, a vortex cavity VII and a vortex cavity export Ⅸ；Wherein, fluidic oscillator entrance II connects with top connection central passage I
Logical, the right control road III of fluidic oscillator is connected to by right control road channel X IV with signal road Ⅻ, the left control road of fluidic oscillator IV
It is connected to signal road Ⅻ by left control road channel X III；Signal road Ⅻ is arranged on the bottom plate extrados Ⅹ of bottom plate 5；Outer tube 2 with
Emptying road Ⅺ is constituted between cover board 6, vortex cavity VII is connected to by vortex cavity outlet Ⅸ with emptying road Ⅺ；It empties in road Ⅺ and lower contact
Heart channel VIII is connected to.
Claims (5)
1. down-hole pressure impulse generator, it is characterised in that：It is connect with outer tube by screw thread by top connection, the outer tube other end passes through
Screw thread is connect with lower contact, is pressure pulse generating device between outer tube top connection and lower contact, and member occurs for pressure pulse
Part upper end contacts with top connection and is sealed with sealing ring, and lower end contacts and compresses with lower contact；The pressure pulse generating device
It is fastened and is bolted connection by bottom plate and cover board, include the fluidic oscillator entrance of a nozzle arrangements, be located at pressure
At the top of pulse generation element central, set that there are two fluidic oscillators to control road, a signal at left and right sides of fluidic oscillator entrance
Road controls road channel by two fluidic oscillators and is connected to two fluidic oscillators control roads, is set below fluidic oscillator entrance
There are one attached wall surface and a recessed attached wall surface is put down, it is vortex cavity below two attached wall surfaces, is equipped at vortex cavity arc profile center
Vortex cavity exports.
2. down-hole pressure impulse generator as described in claim 1, it is characterised in that：The pressure pulse generating device uses
Fluid media (medium) be drilling mud, gas or foam.
3. down-hole pressure impulse generator as described in claim 1, it is characterised in that：The table of faying face between bottom plate and cover board
Surface roughness is less than 0.8 μm.
4. down-hole pressure impulse generator as described in claim 1, it is characterised in that：Bottom plate and cover board integrally use W-Co kind
Cemented carbide material.
5. down-hole pressure impulse generator as described in claim 1, it is characterised in that：Signal road is arranged in bottom plate extrados
On, length can be adjusted freely, and structure type is S-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721788477.6U CN207660545U (en) | 2017-12-19 | 2017-12-19 | Down-hole pressure impulse generator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721788477.6U CN207660545U (en) | 2017-12-19 | 2017-12-19 | Down-hole pressure impulse generator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207660545U true CN207660545U (en) | 2018-07-27 |
Family
ID=62942747
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721788477.6U Withdrawn - After Issue CN207660545U (en) | 2017-12-19 | 2017-12-19 | Down-hole pressure impulse generator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207660545U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939293A (en) * | 2017-12-19 | 2018-04-20 | 中南大学 | Down-hole pressure impulse generator |
-
2017
- 2017-12-19 CN CN201721788477.6U patent/CN207660545U/en not_active Withdrawn - After Issue
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107939293A (en) * | 2017-12-19 | 2018-04-20 | 中南大学 | Down-hole pressure impulse generator |
| CN107939293B (en) * | 2017-12-19 | 2024-04-05 | 中南大学 | Downhole pressure pulse generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20180727 Effective date of abandoning: 20240405 |
|
| AV01 | Patent right actively abandoned |
Granted publication date: 20180727 Effective date of abandoning: 20240405 |