CN206707630U - A kind of Well screw hydroscillator - Google Patents
A kind of Well screw hydroscillator Download PDFInfo
- Publication number
- CN206707630U CN206707630U CN201720504954.5U CN201720504954U CN206707630U CN 206707630 U CN206707630 U CN 206707630U CN 201720504954 U CN201720504954 U CN 201720504954U CN 206707630 U CN206707630 U CN 206707630U
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- valve
- screw
- valve disc
- hydroscillator
- upper shell
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Abstract
A kind of Well screw hydroscillator is the utility model is related to, belongs to technical field of petroleum downhole equipment.The hydroscillator includes upper shell, lower house, top connection, lower contact, spline housing and by-passing valve, mutually it is threadedly coupled by by-passing valve between upper shell and lower house, the ends screw of lower house is provided with lower contact, and the termination of upper shell is provided with top connection by spline housing；Screw motor is equipped with by abutment sleeve and assembling sleeve in lower house, screw motor side is equipped with valve disc by valve disc base.The hydroscillator produces pressure pulse by the change of the area of passage between screw motor and valve disc, the friction condition between drill string and the borehole wall is set to change, drill string elasticity send the growth rate of the instantaneous coefficient of sliding friction of brill to reduce, so as to reduce the moment of torsion between frictional resistance, reduction drill string and the borehole wall, avoid the generation of lock of tool drilling, with drilling efficiency is increased substantially, the advantages of reducing drilling cost.
Description
Technical field
A kind of Well screw hydroscillator is the utility model is related to, belongs to technical field of petroleum downhole equipment.
Background technology
In recent years, deepening continuously with each elephant hunt technology, oil well casing programme complexity gradually increase, long water
The problems such as quantity increase of flat, High angle and multi-branched horizontal well etc., proposes new actual requirement to drilling engineering, makes waterpower
The development space and demand of the instruments such as oscillator are improved.Well horizontal section length and quick drill is realized with regard to how to improve the standard
The problems such as entering becomes Petroleum Industry correlative study focus of attention.Complicated casing programme, not only to drilling technology and method
Higher requirement is proposed, and larger hole angle significantly increases the frictional resistance between petroleum drilling roofbolt and the borehole wall, reduces
The transmission efficiency of the pressure of the drill, have impact on mechanical rate of penetration.Domestic and foreign scholars with regard to how to improve the standard the flat segment length of WIH and
The problems such as realizing fast drilling has carried out substantial amounts of research work.Mud motor such as hydroscillator etc. is due to raising
Single rate of penetration, increase footage per bit, when being easy to oriented control well track and the slip is sent brill drill string and the borehole wall it
Between static friction be changed into many advantages, such as sliding friction is to reduce frictional resistance, make its development space and demand obtain greatly carrying
Rise, also obtained the highest attention of vast researcher.
The content of the invention
The purpose of this utility model is, for above-mentioned the deficiencies in the prior art, there is provided one kind can effectively reduce drill string
Frictional resistance between the borehole wall, the generation for avoiding lock of tool drilling, and then improve the Well screw hydraulic oscillation of drilling efficiency
Device.
The technical solution of the utility model is：
A kind of Well screw hydroscillator, including upper shell, lower house, top connection, lower contact, spline housing and bypass
Valve, it is characterised in that：Mutually it is threadedly coupled by by-passing valve between upper shell and lower house, the ends screw of lower house is provided with
Lower contact, the termination of upper shell are provided with top connection by spline housing；It is equipped with lower house by abutment sleeve and assembling sleeve
Screw motor, screw motor side are equipped with valve disc by valve disc base；Thrust bearing, thrust bearing side are housed on valve disc base
Valve disc base on valve seat is installed, alignment bearing is installed on the valve disc base of thrust bearing opposite side；By-passing valve side
Step Shaft is provided with upper shell；Piston is equipped with by step shaft end cap and back-up ring on Step Shaft, on the Step Shaft of piston side
Equipped with butterfly spring；Butterfly spring is connected with piston contact.
Eccentric setting has flowing hole on described valve disc, and outage is symmetrically arranged with the valve disc of flowing hole both sides.
Sliding block is provided with by chute on valve disc above described flowing hole.
Described screw motor includes motor stator and motor rotor, and motor stator is by stator rubber and stator overcoat structure
Into stator rubber is arranged in stator overcoat by crimp, and stator overcoat realizes axially position by sleeve；Motor stator
It is threadedly coupled with lower house.
Described motor rotor termination is connected with sliding block, and motor rotor is connected by sliding block with valve disc sliding contact.
Counter balance pocket is provided between described alignment bearing and assembling sleeve.
Equilibrium gap is provided between assembling sleeve and valve disc base and valve disc, equilibrium gap connects with counter balance pocket.
Described Step Shaft is threadedly coupled with top connection.
Described spline housing one end is threadedly coupled with upper shell；The spline housing other end and top connection key connection.
Housing liquid flow hole is provided with described upper shell.
Described by-passing valve is made up of application valve body, valve element, spring and control valve seat；It is equipped with valve body by control valve seat
Valve element；Spring is provided between control valve seat and valve element；Valve body liquid flow hole is provided with described application valve body, is set on valve element
There is valve element liquid flow hole.
Technical solutions of the utility model compared with prior art the advantages of be：
Reciprocating motion of the Well screw hydroscillator by connecing sliding block under motor rotor sends out valve disc area of passage
Changing produces pressure pulse so that the active force on disk spring changes and deformed, and transmit motion to it is upper
On the drill string of joint connection, the friction condition between drill string and the borehole wall is set to change, drill string elasticity send the instantaneous slip of brill to rub
Wiping the growth rate of coefficient reduces, and so as to reduce the frictional resistance between drill string and the borehole wall, and can be effectively prevented from the things such as bit freezing
Therefore generation, have and increase substantially drilling efficiency, the characteristics of reducing drilling cost.In addition the sliding block on valve disc can substitute spiral shell
Friction between bar rotor and valve disc, so as to effectively improve the life-span of screw motor.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 be Fig. 1 in A-A to cross section structure schematic diagram；
Fig. 3 is the structural representation of by-passing valve of the present utility model.
In figure：1st, upper shell, 2, lower house, 3, top connection, 4, lower contact, 5, spline housing, 6, by-passing valve, 7, control valve
Body, 8, valve element, 9, spring, 10, control valve seat, 11, valve body liquid flow hole, 12, valve element liquid flow hole, 13, abutment sleeve, 14, assembling
Sleeve, 15, motor stator, 16, motor rotor, 17, valve disc base, 18, valve disc, 19, flowing hole, 20, outage, 21, thrust
Bearing, 22, base fixed cover, 23, alignment bearing, 24, sliding block, 25, counter balance pocket, 26, Step Shaft, 27, step shaft end cap, 28,
Piston, 29, butterfly spring, 30, housing liquid flow hole, 31, screw.
Embodiment
The Well screw hydroscillator includes upper shell 1, lower house 2, top connection 3, lower contact 4, spline housing 5 and side
Port valve 6.Mutually it is threadedly coupled by by-passing valve 6 between upper shell 1 and lower house 2.By-passing valve 6 is by application valve body 7, valve element 8, bullet
Spring 9 and control valve seat 10 are formed；Valve element 8 is equipped with by control valve seat 10 in valve body 7；Set between control valve seat 10 and valve element 8
There is spring 9.Valve body liquid flow hole 11 is provided with application valve body 7, valve element liquid flow hole 12 is provided with valve element 8.
The ends screw of lower house 2 is provided with lower contact 4, and the termination of upper shell 1 is provided with top connection 3 by spline housing 5；
The one end of spline housing 5 is threadedly coupled with upper shell 1；The other end of spline housing 5 and the key connection of top connection 3.
Screw motor is equipped with by abutment sleeve 13 and assembling sleeve 14 in lower house 2, screw motor includes motor stator
The motor rotor 16 of 15 sums（Single-head screw）, motor stator 16 is threadedly coupled with lower house 2.
Screw motor side is equipped with valve disc 18 by valve disc base 17.Pass through screw 31 between valve disc base 17 and valve disc 18
It is connected.Eccentric setting has flowing hole 19 on valve disc 18, and outage 20 is symmetrically arranged with the valve disc 18 of the both sides of flowing hole 19.
Sliding block 24 is provided with by chute on valve disc 18 above flowing hole.
One end termination of motor rotor 16 is connected with sliding block 24, and motor rotor 16 passes through sliding block 24 and the sliding contact of valve disc 18
Connection.The purpose of sliding block 24 is to be used to block flowing hole 19, to change the area of passage of valve disc 18 in the course of the work.Valve disc bottom
Thrust bearing 21 is housed on seat 17, base fixed cover 22, thrust bearing are installed on the valve disc base 17 of the side of thrust bearing 21
Alignment bearing 23 is installed on the valve disc base 17 of 21 opposite sides；It is solid by motor stator 15 and alignment bearing 23 to assemble sleeve 14
It is fixed, it is achieved in axially position.Counter balance pocket 25 is provided between alignment bearing 23 and assembling sleeve 14；Assemble sleeve 14 and valve disc
Equilibrium gap is provided between base 17 and valve disc 18, equilibrium gap connects with counter balance pocket 25 and the epicoele of valve disc 18, the purpose is to
Keep the pressure balance of the both sides of valve disc 18.Valve disc base 17 is realized by the threaded connection with base fixed cover 22 is arranged on valve seat
The fixation of thrust bearing 21 and alignment bearing 23 on 22, clamping thrust bearing is threadedly coupled with lower house 2 by lower contact 4
21, so as to realize the axially position of motor rotor 16 and compression.Thrust bearing 21 simultaneously is used to bear valve disc 18 and motor rotor 16
Axial force and ensure its centering.It is axially fixed that the side of thrust bearing 21 is carried out by the shaft shoulder of alignment bearing 23 and valve disc base 17
Position.
Step Shaft 26 is provided with the upper shell 1 of the side of by-passing valve 6；Step Shaft 26 is threadedly coupled with top connection 3.Step Shaft
Piston 28 is equipped with by step shaft end cap 27 and back-up ring on 26, butterfly spring 29 is housed on the Step Shaft 26 of the side of piston 28；Butterfly
Shape spring 29 contacts connection with piston 28.
Housing liquid flow hole 30 is provided with the upper shell 1 of the Well screw hydroscillator, for butterfly will to be leaked into
Drilling fluid in the space of spring 29 is discharged to drill string annular space.
The Well screw hydroscillator because piston 28 is fixed on Step Shaft 26 by step shaft end cap 27, and by
Step Shaft 26 is threadedly attached in top connection 3, and forms step cooperation with the interior step surface of spline housing 5；So as to coordinate work
Plug 28 can carry out axial restraint to the disk spring 29 being enclosed on Step Shaft 26, thus can prevent the things such as bit freezing when lifting drill string
Therefore drill bit is caused to drop the phenomenon in shaft bottom.
The hydroscillator is by top connection 3, spline housing 5, Step Shaft 26, upper shell 1, disk spring 29, piston 28, step
Shaft end cap 27 forms vibration pipe nipple.
By abutment sleeve 13, alignment bearing 23, motor stator 15, motor rotor 16, assembling sleeve 14, valve disc 18, valve disc
Base 17, thrust bearing 21, lower house 2, base adapter sleeve 22, lower contact 4 form power sub.The sliding block of the hydroscillator
24 lower surfaces directly contact with the upper surface of valve disc 18 and high frequency friction be present, are easily caused the end wear of sliding block 24.When sliding block 24
When end face is not worn, sliding block 24 moves back and forth in valve disc groove does not produce circumferential moment of torsion, after 24 end wear of sliding block, motor
Rotor declines, and the end face for causing sliding block 24 and the chute side of valve disc 18 are produced into excessive friction and produce circumferential moment of torsion, this
When, in the presence of the moment of torsion, the end wear of sliding block 24 will be caused to aggravate.
The hydroscillator on valve disc base 17 due to being mounted with thrust bearing 21 and alignment bearing 23, and valve disc base
17 are bolted with valve disc 18.Under caused moment of torsion effect after the end wear of sliding block 24, valve disc 18 is with valve disc base
17 axial-rotations together, thus the cylinder of sliding block 24 can be worn and eliminated, to ensure the performance of pulse and extend instrument
Working life.
When the hydroscillator works, its top is connected by top connection 3 with drilling rod, and bottom passes through lower contact 4 and drill string
And drill bit connection.In the course of work, the effect drive motor rotor 16 of drilling rod internal high pressure drilling fluid rotates, and makes motor rotor 16
Termination rotates and radially reciprocated, so as to which the kinetic energy of cleaner for high-pressure drilling fluid to be converted into the mechanical energy of rotation at a high speed, due to horse
It is connected up to the termination of rotor 16 with sliding block 24, and motor rotor 16 is connected by sliding block 24 with the sliding contact of valve disc 18；Sliding block 24
Rotate with motor rotor 16 and radially reciprocatingly slide, during this, sliding block 24 interlocks with the flowing hole 19 on valve disc 18
It is overlapping, make drilling fluid by when circulation area generating period change, and then make the upstream flow stream pressure of valve disc 18 that week occur
Phase property changes.
When between sliding block 24 and valve disc 18 area of passage become it is small when, the upstream pressure of valve disc 18 rise, when area of passage most
Hour, i.e., when sliding block 24 blocks the flowing hole 19 of valve disc 18 completely, now drilling fluid is flowed by the outage 20 of the both sides of valve disc 18
Cross, the upstream high liquid stream pulse of sliding block 24 reaches maximum.The flow stream pressure of maximum acts on piston 28 and Step Shaft
Make disk spring 29 compress and the high pressure kinetic energy of drilling fluid is changed into disc spring potential energy on 26 to be stored, the pressure of disk spring 29
Contracting motion transmits motion to drill bit by housing, so that bottomhole vibrates downwards.
When the area of passage change between sliding block 24 and valve disc 18 is big, the upstream pressure of sliding block 24 reduces, before this in compression
The disk spring 29 of state releases energy, and disk spring 29 extends and transmits motion to brill by the housing of the hydroscillator
Head, drill bit is set to move upwards.When area of passage maximum, i.e., when there is no faying surface between sliding block 24 and the flowing hole 19 of valve disc 18
Product, the upstream high liquid stream pulse of sliding block 24 reach minimum.Because screw motor can provide under cleaner for high-pressure drilling fluid effect
Stable rotary motion, and there is certain cycle, under periodic pressure impulse action, the hydroscillator can produce edge
The periodical high-frequency of axial direction is wriggled, and the friction condition between drill string and the borehole wall is changed, drill string elasticity send the instantaneous cunning of brill
The growth rate of the coefficient of kinetic friction reduces, so as to reduce frictional resistance, improve rate of penetration.
The hydroscillator can be by controlling the size of the both sides outage 20 of valve disc 18 and flowing hole 19 and then conveniently
Control minimum pressure values, under identical pressure magnitude, minimum pressure values can be designed into it is very small, so as to reduce maximum pressure
Force value, which reduce instrument internal pressure and working life is extended to the infringement of housing.
For the by-passing valve 6 of the hydroscillator when being passed through the drilling fluid of certain pressure, valve element 8 is downward because pressure acts on
It is mobile, so as to close the valve element liquid flow hole 12 in by-passing valve 6；When distress resolves, valve element 8 is in the presence of spring 9 to moving up
Dynamic, valve body liquid flow hole 11 is opened, drilling fluid discharge.When drill bit is taken out into shaft bottom, due to the closure of screw motor, in drill string
Drilling fluid annular space will be flowed into by valve body liquid flow hole 11 and be unlikely to be spilled over to well head from drill string upper end.
The assembling sleeve 14 of the hydroscillator and the gap of valve disc 18 can introduce drilling fluid, with lubricating thrust bearing 21
With alignment bearing 23, and the active area of the epicoele pulse of valve disc 18 can be reduced to reduce the load on thrust bearing 21 and right
The upside of alignment bearing 23 is cooled, and so as to extend the working life of thrust bearing 21, and then extends the hydroscillator
Service life.Meanwhile drilling fluid to thrust bearing 21 and can be helped by the gap between base adapter sleeve 22 and lower contact 4
Positive bearing 23 is lubricated and reduces thrust bearing 21 and temperature when alignment bearing 23 works, to improve thrust bearing 21 and help
The service life of positive bearing 23.
Claims (10)
1. a kind of Well screw hydroscillator, including upper shell（1）, lower house（2）, top connection（3）, lower contact（4）, flower
Key set（5）And by-passing valve（6）, it is characterised in that：Upper shell（1）And lower house（2）Between pass through by-passing valve（6）Mutual screw thread connects
Connect, lower house（2）Ends screw lower contact is installed（4）, upper shell（1）Termination pass through spline housing（5）It is provided with and connects
Head（3）；Lower house（2）Inside pass through abutment sleeve（13）With assembling sleeve（13）Equipped with screw motor, screw motor side passes through
Valve disc base（17）Equipped with valve disc（18）；Valve disc base（17）It is upper that thrust bearing is housed（21）, thrust bearing（21）The valve of side
Try to get to the heart of a matter seat（17）On base adapter sleeve is installed（22）, thrust bearing（21）The valve disc base of opposite side（17）On righting is installed
Bearing（23）；By-passing valve（6）The upper shell of side（1）Inside it is provided with Step Shaft（26）；Step Shaft（26）It is upper to pass through step shaft end
Cap（27）Piston is housed with back-up ring（28）, piston（28）The Step Shaft of side（26）It is upper that butterfly spring is housed（29）；Butterfly spring
（29）With piston（28）Contact connection.
A kind of 2. Well screw hydroscillator according to claim 1, it is characterised in that：Described valve disc（18）On
Eccentric setting has flowing hole（19）, flowing hole（19）The valve disc of both sides（18）On be symmetrically arranged with outage（20）.
A kind of 3. Well screw hydroscillator according to claim 2, it is characterised in that：Described flowing hole（19）
The valve disc of top（18）It is upper that sliding block is provided with by chute（24）.
A kind of 4. Well screw hydroscillator according to claim 1, it is characterised in that：Described screw motor bag
Include motor stator（15）And motor rotor（16）, motor stator（16）With lower house（2）Threaded connection.
A kind of 5. Well screw hydroscillator according to claim 4, it is characterised in that：Described motor rotor
（15）Termination and sliding block（24）Connection, motor rotor（15）Pass through sliding block（24）With valve disc（18）It is slidably connected.
A kind of 6. Well screw hydroscillator according to claim 1, it is characterised in that：Described alignment bearing
（23）With assembling sleeve（14）Between be provided with counter balance pocket（25）；Assemble sleeve（14）With valve disc base（17）And valve disc（18）It
Between be provided with equilibrium gap, equilibrium gap and counter balance pocket（25）Connection.
A kind of 7. Well screw hydroscillator according to claim 1, it is characterised in that：Described Step Shaft（26）
With top connection（3）Threaded connection.
A kind of 8. Well screw hydroscillator according to claim 1, it is characterised in that：Described spline housing（5）
One end and upper shell（1）Threaded connection；Spline housing（5）The other end and top connection（3）Key connection.
A kind of 9. Well screw hydroscillator according to claim 1, it is characterised in that：Described upper shell（1）
On be provided with housing liquid flow hole（30）.
A kind of 10. Well screw hydroscillator according to claim 1, it is characterised in that：Described by-passing valve（6）
By application valve body（7）, valve element（8）, spring（9）And control valve seat（10）Form；Application valve body（7）Inside pass through control valve seat（10）
Equipped with valve element（8）；Control valve seat（10）With valve element（8）Between be provided with spring（9）；Described application valve body（7）On be provided with
Valve body liquid flow hole（11）, valve element（8）On be provided with valve element liquid flow hole（12）.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504954.5U CN206707630U (en) | 2017-05-09 | 2017-05-09 | A kind of Well screw hydroscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720504954.5U CN206707630U (en) | 2017-05-09 | 2017-05-09 | A kind of Well screw hydroscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206707630U true CN206707630U (en) | 2017-12-05 |
Family
ID=60465788
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720504954.5U Expired - Fee Related CN206707630U (en) | 2017-05-09 | 2017-05-09 | A kind of Well screw hydroscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206707630U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| CN110529099A (en) * | 2019-08-31 | 2019-12-03 | 中国石油集团川庆钻探工程有限公司 | It accumulates static friction force calculation method, reduce frictional resistance method in static friction area |
| CN111852334A (en) * | 2019-04-30 | 2020-10-30 | 中国石油化工股份有限公司 | Reactive torque automatic balancing device for screw drill, drilling pipe string and method |
-
2017
- 2017-05-09 CN CN201720504954.5U patent/CN206707630U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106917586A (en) * | 2017-05-09 | 2017-07-04 | 长江大学 | A kind of Well screw hydroscillator |
| CN111852334A (en) * | 2019-04-30 | 2020-10-30 | 中国石油化工股份有限公司 | Reactive torque automatic balancing device for screw drill, drilling pipe string and method |
| CN111852334B (en) * | 2019-04-30 | 2021-09-24 | 中国石油化工股份有限公司 | Reactive torque automatic balancing device for screw drill, drilling pipe string and method |
| CN110529099A (en) * | 2019-08-31 | 2019-12-03 | 中国石油集团川庆钻探工程有限公司 | It accumulates static friction force calculation method, reduce frictional resistance method in static friction area |
| CN110529099B (en) * | 2019-08-31 | 2023-11-14 | 中国石油集团川庆钻探工程有限公司 | Method for calculating accumulated static friction resistance of static friction area and method for reducing friction resistance |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171205 Termination date: 20200509 |