CN108798521A - A kind of reciprocating axial impact pressue device - Google Patents
A kind of reciprocating axial impact pressue device Download PDFInfo
- Publication number
- CN108798521A CN108798521A CN201810891913.5A CN201810891913A CN108798521A CN 108798521 A CN108798521 A CN 108798521A CN 201810891913 A CN201810891913 A CN 201810891913A CN 108798521 A CN108798521 A CN 108798521A
- Authority
- CN
- China
- Prior art keywords
- shell
- rack
- pressue device
- sliding sleeve
- axial impact
- 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.)
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP 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 DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B4/00—Drives for drilling, used in the borehole
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B7/00—Special methods or apparatus for drilling
- E21B7/18—Drilling by liquid or gas jets, with or without entrained pellets
Abstract
The present invention relates to a kind of reciprocating axial impact pressue devices, belong to oil drilling tool technical field.It is made of shell, top connection, lower contact, assembled shaft and sliding sleeve, and one end of shell is equipped with top connection；The shell other end is equipped with sliding sleeve, and the shell of top connection side is built-in rack, and assembled shaft is housed in the corresponding shell of rack, impeller is symmetrically installed in assembled shaft, partial gear is housed in the assembled shaft between impeller；Partial gear engages connection with rack interval.The reciprocating axial impact pressue device generates periodic axial vibration and impact, improves the efficiency of breaking rock of drill bit while transmitting torque to drill bit；And drilling fluid will be compressed and be discharged by piston, form periodically pulsing pressurization, periodic axial vibration, impact and pulse-pressure act on drill bit rock break-off process simultaneously, and drill bit drilling efficiency is greatly improved, and avoid the phenomenon that bit nozzle blocks, drill bit generates mud drum.
Description
Technical field
The present invention relates to a kind of reciprocating axial impact pressue devices, belong to oil drilling tool technical field.
Background technology
As the exploration and development ratio of deep-well and ultradeep well is continuously increased, deep formation formation hardness and plasticity increase, often
Rule rock bit drillability is poor, mechanical separator speed is low, drilling period is long.To improve bit run rate of penetration, PDC drill bits obtain
It being widely used, PDC drill bits encounter non-equal value stratum in drilling moment, when drill string torque energy cannot meet fractured rock torque,
Drill bit moment stops operating, and at this moment external energy is stored in drill string, when storage torque energy is required more than catalase
When torque, the meeting abrupt release of drill string energy makes drill bit generate high vibration together with drill string, existing to generate " stick slip vibration "
As.To solve this problem, it is necessary to which research and development are a kind of to provide axial or circumferential impact or pressurization, and then improve drill bit detritus effect
The tool of rate.
Invention content
It is an object of the invention to：Periodic axial vibration, impact and pressurization can be provided to drill bit simultaneously by providing one kind,
To increase substantially the reciprocating axial impact pressue device of drill bit detritus efficiency.
The technical scheme is that：
A kind of reciprocating axial impact pressue device, it is made of shell, top connection, lower contact, assembled shaft and sliding sleeve,
It is characterized in that：The threaded one end of shell is equipped with top connection；Sliding sleeve is slidably fitted in the end of the other end of shell, it is sliding
The ends screw of moving sleeve is equipped with lower contact；The shell ends screw of lower contact side is equipped with gland；Top connection side
Rack is movably installed with by internal chute in shell, assembled shaft is housed in the corresponding shell of rack, is symmetrically installed in assembled shaft
Impeller is equipped with partial gear in the assembled shaft between impeller；Partial gear engages connection with rack interval；Sliding sleeve is lived
It is dynamic that cylinder sleeve is installed, it is provided with stepped hole in the cylinder sleeve, is equipped with and is placed an order to valve, the large diameter hole of cylinder sleeve in the diameter holes of cylinder sleeve
It is interior that upper check valve is equipped with by compressed spring, it is provided with connecting short section in the sliding sleeve of upper check valve side, connecting short section
One end is threadedly coupled with rack, and the other end of connecting short section is connected with upper check valve.
The lower check valve is made of lower valve base, lower spring and lower valve ball, and lower spring, lower spring are provided on lower valve base
End be equipped with lower valve ball.It is provided with centre bore on the lower valve base.
It is provided with buffer spring between the lower valve base and lower contact.
The upper check valve is made of upper valve base, piston, upper spring and upper valve ball；The side of upper valve base is provided with work
It fills in, centre bore is respectively arranged on upper valve base and piston, spring is provided on upper valve base, the end of upper spring is equipped with upper valve
The centre bore of ball, upper valve ball and piston connects；The upper valve base and piston is slidably and sealingly connected with cylinder sleeve.
Described connecting short section one end is provided with centre bore, and radial hole, diameter are provided on the connecting short section of centre bore end
It is connected to hole with centre bore.
It is provided with outward flange on the sliding sleeve, resetting spring is provided between outward flange and gland；Gland and cunning
It is to be slidably and sealingly connected between moving sleeve.
Eccentric setting has liquid flow hole in the top connection；
The shell is made of two semicircular cylinders, and connection is fitted closely by top connection and gland between two semicircular cylinders.
The rack is in Y types, and driving cog is respectively arranged on the inner wall of rack open end.
The impeller is bullet, and multiple blades are provided in the shape of a spiral on impeller.
The beneficial effects of the present invention are：
The reciprocating axial impact pressue device generates periodic axial vibration and punching while transmitting torque to drill bit
It hits, improves the efficiency of breaking rock of drill bit；And drilling fluid will be compressed and be discharged by piston, form periodically pulsing add
Pressure, improves bit nozzle jeting effect, improves the stress of rock, while the impact of drilling fluid pulse formula strengthens well
The cleaning effect at bottom.Periodic axial vibration, impact and pulse-pressure act on drill bit rock break-off process simultaneously, increase substantially
Drill bit drilling efficiency avoids the phenomenon that bit nozzle blocks, drill bit generates mud drum.
Description of the drawings
Fig. 1 is the schematic cross-sectional view of the present invention；
Fig. 2 is the dimensional structure diagram of the partial gear of the present invention；
Fig. 3 is the dimensional structure diagram of the rack of the present invention；
Fig. 4 is the dimensional structure diagram of the impeller of the present invention.
In figure：1, shell, 2, top connection, 3, lower contact, 4, assembled shaft, 5, sliding sleeve, 6, gland, 7, internal chute, 8,
Rack, 9, impeller, 10, partial gear, 11, driving cog, 12, outward flange, 13, inward flange, 14, resetting spring, 15, cylinder sleeve,
16, lower valve base, 17, lower spring, 18, lower valve ball, 19, buffer spring, 20, compressed spring, 21, upper valve base, 22, piston, 23, on
Spring, 24, upper valve ball, 25, connecting short section, 26, radial hole.
Specific implementation mode
The reciprocating axial impact pressue device is by shell 1, top connection 2,5 structure of lower contact 3, transmission shaft 4 and sliding sleeve
At the threaded one end of shell 1 is equipped with top connection 2；Eccentric setting has liquid flow hole in top connection 2.The end of the other end of shell 1
It is inside slidably fitted with sliding sleeve, feather key is provided on sliding sleeve 5, keyway is provided on 1 inner wall of shell corresponding with feather key,
It is slidably connected by the cooperation of feather key and keyway between sliding sleeve 5 and shell 1, in the course of work, 5 opposite shell of sliding sleeve
1 cannot rotate in the circumferential, move in the axial direction.
The ends screw of sliding sleeve 5 is equipped with lower contact 3；1 ends screw of shell of 3 side of lower contact is equipped with ring-type
Gland 6；The shell 1 of the reciprocating axial impact pressue device is made of two semicircular cylinders, to facilitate each component in shell 1
Assembly.Connection is fitted closely by top connection 2 and gland 5 between two semicircular cylinders of composition shell 1, it is whole to constitute one
Body, and ensure the radial seal of shell 1.Rack 8, rack 8 are movably installed with by internal chute 7 in the shell 1 of 2 side of top connection
In Y types, driving cog 11 is respectively arranged on the inner wall up and down of rack open end.8 corresponding internal diameter of outer cover of rack to be equipped with dress
With axis 4, impeller 9 is symmetrically installed in assembled shaft 5.Impeller 9 is bullet, and multiple blades are provided in the shape of a spiral on impeller 9.Leaf
Partial gear 10 is housed in the assembled shaft 4 between wheel 9；Partial gear 10 and impeller 9 are fixedly connected with assembled shaft 4 respectively.
Partial gear 10 intermittently engages connection with the driving cog 11 on rack 8.The effect one of the internal chute 7 of the pressue device is for tooth
One guiding role of mobile offer of item 8, second is that ensure the setting angle of rack 8, and then ensure work middle rack 8 can with it is endless
All gear 10 accurately engages.
It is provided with outward flange 12 on the sliding sleeve 5 of the pressue device, inward flange 13, shell 1 are provided on 1 inner wall of shell
Axial limiting is carried out to sliding sleeve 5 by the cooperation of inward flange 13 and outward flange 12；It is provided between outward flange 12 and gland 6
Resetting spring 14；It is to be slidably and sealingly connected between gland 6 and sliding sleeve 5.
It is movably installed with cylinder sleeve 15 in sliding sleeve 5, stepped hole is provided in cylinder sleeve 15, is equipped in the diameter holes of cylinder sleeve 15
Lower check valve, lower check valve are made of lower valve base 16, lower spring 17 and lower valve ball 18, and centre bore is provided on lower valve base 16.In
Lower spring 17 is provided on lower valve base 16 on the inside of heart hole, the end of lower spring 17 is equipped with lower valve ball 18.Lower valve ball 18 and cylinder sleeve
15 stepped hole connects；Buffer spring 19 is provided between lower valve base 16 and lower contact 3；Lower valve base 16 and 15 screw thread of cylinder sleeve
Connection.
Upper check valve is equipped with by compressed spring 20 in the large diameter hole of cylinder sleeve 15, upper check valve by upper valve base 21, piston 22,
Upper spring 23 and upper valve ball 24 are constituted；The side of upper valve base 21 is provided with piston 22, is respectively set on upper valve base 21 and piston 22
There is centre bore, spring 23 is provided on upper valve base 21, the end of upper spring 23 is equipped with upper valve ball 24, upper valve ball 24 and piston 22
Centre bore connect；Upper valve base 21 and piston 22 are slidably and sealingly connected with cylinder sleeve 15.Upper valve base 21 connects with 22 screw thread of piston
It connects.
Connecting short section 25 is provided in the sliding sleeve 5 of upper check valve side, 25 one end of connecting short section is provided with centre bore,
Radial hole 26 is provided on the connecting short section 25 of centre bore end, radial hole 26 is connected to centre bore.One end of connecting short section 25
It is threadedly coupled with rack 8, the other end of connecting short section 25 and the piston 22 of upper check valve connect.
When the reciprocating axial impact pressue device assembly, top connection 2 is bored for connecting drill string, lower contact 3 for installing
Head, in the course of work, by the blade for the drilling fluid fixed point impact impeller 9 that the liquid flow hole of top connection 2 enters, to keep impeller 9 suitable
Hour hands high-speed rotation；Since partial gear 10 and impeller 9 are fixedly connected with assembled shaft 4 respectively.9 high-speed rotation of impeller it is same
When, drive partial gear 10 to rotate by assembled shaft 4；In 10 rotation process of partial gear, respectively with the biography of the top of rack 8
The driving cog 11 of 8 lower section of moving teeth 11 and rack intermittently engages connection, wherein the driving cog of partial gear 10 and 8 lower section of rack
When 11 engagement；Band carry-over bar 8 is moved to the left, when partial gear 10 is engaged with the driving cog 11 of 8 top of rack；Band carry-over bar 8
It moves right, so recycles, band 8 bilateral reciprocation of carry-over bar.
While 8 bilateral reciprocation of rack, to impeller 9 complete impact drilling fluid through radial hole 26 enter to connection it is short
In the centre bore of section 25 and with the bilateral reciprocation of rack 8, collect in the junction of connecting short section 25 and piston 22；This
In the process, during as the pressure of drilling fluid increases and connecting short section 25 moves right, to the pressure that drilling fluid is formed,
It forces drilling fluid to push upper valve ball 24 open to enter in the cavity between upper valve base 21 and lower valve ball 18.As connecting short section 25 continues
It moves right, connecting short section 25 is contacted with piston 22, and piston 22 and upper valve base 21 is pushed to move right along cylinder sleeve 15, this mistake
Cheng Zhong, upper valve base 21 squeeze the drilling fluid in cavity between upper valve base 21 and lower valve ball 18；Wherein, the anti-of drilling fluid generation is squeezed
It forces upper valve ball 24 to block the centre bore of piston 22 to pressure, so that the drilling liquid pressure in cavity is increased suddenly, and push open down
Valve ball 18 is projected by the centre bore high speed on lower valve base 16, that is, generates pulse-pressure.The drilling fluid that high speed projects is acted on to drill bit,
Thus avoid the phenomenon that bit nozzle blocks, drill bit generates mud drum.After connecting short section 25 bounces back, in the effect of compressed spring 20
Lower piston 22 resets, and so recycles, and periodically generates pulse-pressure.
Due to being slidably matched between connecting short section 25 and sliding sleeve 5, when connecting short section 25 moves right and makes radial hole
After 26 enter in sliding sleeve 5, the runner of drilling fluid is truncated at this time；The drilling fluid that impact is completed to impeller 9 is acted on to cunning
On the end face of moving sleeve 5,5 right lateral of sliding sleeve is pushed to squeeze, while compression reseting spring 14；When 5 right lateral of sliding sleeve
When radial hole 26 being made to expose, the runner connection of drilling fluid acts at this time to the drilling liquid pressure on the end face of sliding sleeve 5 and subtracting
Small, connecting short section 25 resets under the action of resetting spring 14, repeatedly, sliding sleeve 5 is made to generate periodically axial position
It moves, that is, generates axial vibration power.The vibration force is acted on through lower contact to drill bit；The stress of rock can be improved, substantially
Degree improves drill bit drilling efficiency.
The reciprocating axial impact pressue device, will be to boring by the movement of piston 22 while transmitting torque to drill bit
Well liquid is compressed and is discharged, and periodically pulsing pressurization is formed, and to improve bit nozzle jeting effect, passes through sliding sleeve
The reciprocating motion of cylinder 5 improves the stress of rock to generate periodic axial vibration power, improves the broken of drill bit
Rock efficiency；The impact of drilling fluid pulse formula strengthens the cleaning effect in shaft bottom simultaneously.Periodic axial vibration and pulse-pressure
It acts on drill bit simultaneously, can avoid the phenomenon that bit nozzle blocks, drill bit generates mud drum, increase substantially the drilling effect of drill bit
Rate.
Claims (10)
1. a kind of reciprocating axial impact pressue device, it is by shell（1）, top connection（2）, lower contact（3）, assembled shaft（4）With
Sliding sleeve（5）It constitutes, it is characterised in that：Shell（1）Threaded one end top connection is installed（2）；Shell（1）The other end
Sliding sleeve is slidably fitted in end（5）, sliding sleeve（5）Ends screw lower contact is installed（3）；Lower contact（3）One
The shell of side（1）Ends screw is equipped with gland（6）；Top connection（2）The shell of side（1）Inside pass through internal chute（7）Activity peace
Equipped with rack（8）, rack（8）Corresponding shell（1）It is interior that assembled shaft is housed（4）, assembled shaft（4）On be symmetrically installed with impeller（9）,
Impeller（9）Between assembled shaft（4）It is upper that partial gear is housed（10）；Partial gear（10）With rack（8）Interval engagement connects
It connects；Sliding sleeve（5）Inside it is movably installed with cylinder sleeve（15）, the cylinder sleeve（15）Inside it is provided with stepped hole, cylinder sleeve（15）It is small
It is equipped with and is placed an order to valve, cylinder sleeve in diameter hole（15）Large diameter hole in pass through compressed spring（20）Equipped with upper check valve, upper check valve one
The sliding sleeve of side（5）Inside it is provided with connecting short section（25）, connecting short section（25）One end and rack（8）It is threadedly coupled, connection
Pipe nipple（25）The other end and upper check valve connect.
2. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The lower check valve
By lower valve base（16）, lower spring（17）And lower valve ball（18）It constitutes, lower valve base（16）On be provided with lower spring（17）, lower spring
（17）End be equipped with lower valve ball（18）；The lower valve base（16）On be provided with centre bore.
3. a kind of reciprocating axial impact pressue device according to claim 2, it is characterised in that：The lower valve base
（16）With lower contact（3）Between be provided with buffer spring（19）.
4. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The upper check valve
By upper valve base（21）, piston（22）, upper spring（23）And upper valve ball（24）It constitutes；Upper valve base（21）Side be provided with piston
（22）, upper valve base（21）And piston（22）On be respectively arranged with centre bore, upper valve base（21）On be provided with spring（23）, upper bullet
Spring（23）End be equipped with upper valve ball（24）, upper valve ball（24）With piston（22）Centre bore connect；The upper valve base
（21）And piston（22）With cylinder sleeve（15）It is slidably and sealingly connected with.
5. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The connecting short section
（25）One end is provided with centre bore, the connecting short section of centre bore end（25）On be provided with radial hole（26）, radial hole（26）With
Centre bore is connected to.
6. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The sliding sleeve
（5）On be provided with outward flange（12）, outward flange（12）With gland（6）Between be provided with resetting spring（14）；Gland（6）With sliding
Sleeve（5）Between to be slidably and sealingly connected with.
7. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The top connection
（2）Upper eccentric setting has liquid flow hole.
8. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The shell（1）
It is made of two semicircular cylinders, passes through top connection between two semicircular cylinders（2）And gland（6）Fit closely connection.
9. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The rack（8）
In Y types, rack（8）It is respectively arranged with driving cog on the inner wall of open end（11）.
10. a kind of reciprocating axial impact pressue device according to claim 1, it is characterised in that：The impeller（9）
For bullet, impeller（9）On be provided with multiple blades in the shape of a spiral.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891913.5A CN108798521B (en) | 2018-08-07 | 2018-08-07 | Reciprocating axial impact pressurizing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810891913.5A CN108798521B (en) | 2018-08-07 | 2018-08-07 | Reciprocating axial impact pressurizing device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108798521A true CN108798521A (en) | 2018-11-13 |
| CN108798521B CN108798521B (en) | 2023-09-29 |
Family
ID=64079429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810891913.5A Active CN108798521B (en) | 2018-08-07 | 2018-08-07 | Reciprocating axial impact pressurizing device |
Country Status (1)
| Country | Link |
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| CN (1) | CN108798521B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109779572A (en) * | 2019-03-08 | 2019-05-21 | 长江大学 | A kind of reducing surges mechanical paraffin removal unit |
| CN110273646A (en) * | 2019-07-11 | 2019-09-24 | 成都阿斯贝瑞科技有限公司 | A kind of novel drop mill friction reducer |
| CN110821479A (en) * | 2019-11-14 | 2020-02-21 | 西南石油大学 | Underground traction device for avoiding pressure difference to meet clamping in cable logging |
| CN113006695A (en) * | 2021-04-06 | 2021-06-22 | 西南石油大学 | PDC drill bit pulse impact device and method |
| WO2022048157A1 (en) * | 2020-09-07 | 2022-03-10 | 中石化石油机械股份有限公司 | Method for increasing output power of jet flow hydraulic oscillator |
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| CN113006695B (en) * | 2021-04-06 | 2022-03-11 | 西南石油大学 | PDC drill bit pulse impact device and method |
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| Publication number | Publication date |
|---|---|
| CN108798521B (en) | 2023-09-29 |
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