CN104110215A - Hydraulic oscillator - Google Patents
Hydraulic oscillator Download PDFInfo
- Publication number
- CN104110215A CN104110215A CN201410303565.7A CN201410303565A CN104110215A CN 104110215 A CN104110215 A CN 104110215A CN 201410303565 A CN201410303565 A CN 201410303565A CN 104110215 A CN104110215 A CN 104110215A
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- China
- Prior art keywords
- stator
- valve
- rotor
- drilling
- hydroscillator
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- 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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Abstract
The invention relates to the field of auxiliary tools, in particular to a hydraulic oscillator. The hydraulic oscillator comprises a stator externally connected with a rotor in a sleeved mode and is characterized in that a movable valve is connected to the top end of the rotor, a fixed valve is connected to one end of the stator, a top nipple is connected to the other end of the stator, the top nipple is connected with a spline mandrel through an oscillating nipple sleeve, and a disk spring is further arranged between the spline mandrel and the oscillating nipple sleeve. The hydraulic oscillator is favorable for volumetric fracture of rock, and thus the rock breaking efficiency is improved, spiral bending of a pipe string is avoided, bit pressure transmission effect is improved, mechanical drilling rate is increased, drilling can be performed by applying small bit pressure, and lateral oscillation and torsional oscillation are reduced.
Description
Technical field
The present invention relates to aid field, be specifically related to hydroscillator.
Technical background
In drilling process, frictional resistance is the key factor that affects drilling speed.When conventional drilling, drilling assembly and the borehole wall are in static friction situation, and frictional resistance is larger, easily cause jam or bit freezing, have a strong impact on drilling process, even more serious on horizontal well impact.Along with deepening continuously of exploration and development, extended horizontal well, Holes of Complicated Wells increase gradually, about how reducing frictional resistance, reducing conventional drilling lock of tool drilling, increase the efficiency of moving the pressure of the drill, raising conventional drilling, and Chinese scholar has carried out probing in a large number.
The problem that drilling engineering faces is how to guarantee " excellent, fast, province " all the time, how to improve drilling efficiency, all the more so concerning the exceptional well such as extended reach well, deep-well.Carry out large quantity research around " soon " both at home and abroad, mainly researched and developed following several instruments: impactor, vertical drill tools, rotary steerable tool, hydraulic thruster, friction reducer and bumper jar.But the function of these instruments is all more single, cannot meet to a greater degree the requirement of " excellent, fast " drilling well.
Summary of the invention
In order to address the above problem, the invention provides one and be conducive to rock generation volumetric fracture, thereby raising efficiency of breaking rock, avoid the generation of pipe string helical buckling, improve load transfer effect and improve rate of penetration, can also apply little the pressure of the drill and creep into, reduce the hydroscillator of oscillation crosswise and twisting vibration.
Hydroscillator of the present invention, comprise the stator that is socketed in rotor exterior, apex rotor is connected with a moving valve, stator one end is connected with certain valve, the other end is connected with top pipe nipple, described top pipe nipple is connected with splined mandrel by vibration pipe nipple sleeve, between flower, between axle and vibration pipe nipple sleeve, is also provided with dish spring.
Preferably, stator is 2:1 with the ratio of a number of rotor.
Preferably, moving valve is provided with an eccentric orfice, determines to be provided with on valve a centre bore.
Preferably, moving valve with determine valve surface and be all coated with tungsten carbide.
The present invention is conducive to rock generation volumetric fracture, thereby improves efficiency of breaking rock, avoids the generation of pipe string helical buckling, improves load transfer effect and improves rate of penetration, can also apply little the pressure of the drill and creep into, and reduces oscillation crosswise and twisting vibration.
Brief description of the drawings
Fig. 1 is hydroscillator structural representation.
Reference numeral: 1-splined mandrel, 2-dish spring, 3-vibration pipe nipple sleeve, 4-top pipe nipple, 5-stator, 6-rotor, 7-moves valve, and 8-determines valve.
Detailed description of the invention
Hydroscillator of the present invention, comprise the stator 5 that is socketed in rotor 6 outsides, rotor 6 tops are connected with a moving valve 7, stator 5 one end are connected with certain valve 8, the other end is connected with top pipe nipple 4, described top pipe nipple 4 is connected with splined mandrel 1 by vibration pipe nipple sleeve 3, between flower, between axle 1 and vibration pipe nipple sleeve 3, is also provided with dish spring 2.Stator 5 is 2:1 with the ratio of a number of rotor 6.Moving valve 7 is provided with an eccentric orfice, determines to be provided with a centre bore on valve 8, moves valve 7 and determine valve 8 surfaces to be all coated with tungsten carbide.
Stator 5 and rotor 6 are converted to drilling fluid kinetic energy the mechanical energy of rotation by rotor 6, valve 7 is rotated, and the flow producing while making its work is cyclically-varying, make pressure produce water hammer, the gentle oscillating force that water hammer produces on valve seat passes to drill bit by drilling tool, forms periodically the pressure of the drill of continuous soft variation.Alternating pressure effect vibration pipe nipple piston, Compress Spring, amplifies impact force.The strain rate of drilling tool lower than
, the load effect that drilling tool is born is identical with static load, thereby extends the working life of the drilling tools such as drill bit.Rely on vibration, drilling assembly, eliminate the quiet frictional resistance between drilling tool and the borehole wall, make bottom hole assemblies and the borehole wall in dynamic friction state, friction factor reduces greatly, avoid the generation of pipe string helical buckling, reduce frictional resistance and moment of torsion, extend brill and reach scope, improve load transfer effect and improve rotating speed, can apply little the pressure of the drill and creep into, reduce oscillation crosswise and twisting vibration.
The pressure that hydroscillator valve seat carries passes to drill bit by Bottom Hole Assembly (BHA), form periodically the pressure of the drill of continuous soft variation, be conducive to rock generation volumetric fracture, thereby raising efficiency of breaking rock, and the present invention not only relies on combination of vibrations drilling tool, eliminate the quiet frictional resistance between drilling tool and the borehole wall, make bottom hole assemblies and the borehole wall in dynamic friction state, friction factor reduces greatly, avoid the generation of pipe string helical buckling, and hydroscillator can reduce frictional resistance and moment of torsion, extend the scope that reaches of boring, improve load transfer effect and improve rate of penetration, can also apply little the pressure of the drill creeps into, reduce oscillation crosswise and twisting vibration.
Claims (4)
1. a hydroscillator, comprise and be socketed in the outside stator (5) of rotor (6), it is characterized in that described rotor (6) top is connected with a moving valve (7), stator (5) one end is connected with certain valve (8), the other end is connected with top pipe nipple (4), described top pipe nipple (4) is connected with splined mandrel (1) by vibration pipe nipple sleeve (3), between flower, between axle (1) and vibration pipe nipple sleeve (3), is also provided with dish spring (2).
2. hydroscillator as claimed in claim 1, is characterized in that described stator (5) and the ratio of a number of rotor (6) are 2:1.
3. hydroscillator as claimed in claim 1, is characterized in that described moving valve (7) is provided with an eccentric orfice, determines to be provided with a centre bore on valve (8).
4. hydroscillator as claimed in claim 3, is characterized in that described moving valve (7) and determines valve (8) surface and be all coated with tungsten carbide.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303565.7A CN104110215A (en) | 2014-06-30 | 2014-06-30 | Hydraulic oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410303565.7A CN104110215A (en) | 2014-06-30 | 2014-06-30 | Hydraulic oscillator |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104110215A true CN104110215A (en) | 2014-10-22 |
Family
ID=51707188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410303565.7A Pending CN104110215A (en) | 2014-06-30 | 2014-06-30 | Hydraulic oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104110215A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014316A (en) * | 2016-05-26 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Shock-resisting downhole screw type pulse generator |
| CN106948761A (en) * | 2017-04-28 | 2017-07-14 | 中国石油集团川庆钻探工程有限公司 | Hydraulic oscillator |
| CN108894743A (en) * | 2018-06-30 | 2018-11-27 | 中国石油大学(华东) | A kind of oscilator system and its sports immunology method |
-
2014
- 2014-06-30 CN CN201410303565.7A patent/CN104110215A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106014316A (en) * | 2016-05-26 | 2016-10-12 | 中国石油集团渤海钻探工程有限公司 | Shock-resisting downhole screw type pulse generator |
| CN106014316B (en) * | 2016-05-26 | 2019-09-13 | 中国石油集团渤海钻探工程有限公司 | Shock resistance underground screw impulse generator |
| CN106948761A (en) * | 2017-04-28 | 2017-07-14 | 中国石油集团川庆钻探工程有限公司 | Hydraulic oscillator |
| CN106948761B (en) * | 2017-04-28 | 2019-02-01 | 中国石油集团川庆钻探工程有限公司 | Hydraulic oscillator |
| CN108894743A (en) * | 2018-06-30 | 2018-11-27 | 中国石油大学(华东) | A kind of oscilator system and its sports immunology method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20141022 |
|
| WD01 | Invention patent application deemed withdrawn after publication |