CN105781418A - Amplitude-adjustable hydraulic pulse generating device - Google Patents
Amplitude-adjustable hydraulic pulse generating device Download PDFInfo
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- CN105781418A CN105781418A CN201410833612.9A CN201410833612A CN105781418A CN 105781418 A CN105781418 A CN 105781418A CN 201410833612 A CN201410833612 A CN 201410833612A CN 105781418 A CN105781418 A CN 105781418A
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Abstract
The invention discloses an amplitude-adjustable hydraulic pulse generating device. The hydraulic pulse generating device comprises a screw motor and a hydraulic pulse valve bank short section. The motor is composed of an upper connector, a baffle, a stator assembly and a rotor. When drilling fluid passes through the motor, the rotor is driven to linearly move back and forth in the long axis direction of the section of a lining. The hydraulic pulse valve bank short section comprises a water-flowing connector, a movable valve, a spring, a bushing ring, a fixed valve, a pressing connector, a lower connector and a directional key. The fixed valve is fixed to the stator assembly through the directional key. Through the directional key, the eccentric direction of an eccentric hole of the fixed valve is made consistent with the long axis direction of the section of the lining. The movable valve linked with the lower portion of the rotor linearly moves back and forth on the fixed valve, so that the flowing area of the drilling fluid changes continuously. Adjustment of the amplitude is achieved through the value of the offset distance of a central hole of the fixed valve, and the offset direction is located in the center of the revolution track of the rotor. The amplitude-adjustable hydraulic pulse generating device is simple in structure, small in valve number, low in cost, stable and reliable.
Description
Technical field
The present invention relates to oil and gas well drilling, workover treatment instrument field, the waterpower pulse generating means of especially a kind of adjustable amplitude.
Background technology
In oil, natural gas exploration and development drilling process, frictional resistance becomes the principal element of restriction drilling well development, restriction drilling well horizontal segment construction length.Waterpower pulse axial oscillation friction reducer can by well upwards oscillating bit tool so that between drilling tool and the borehole wall static friction become dynamic friction and reduce frictional force and realize the accurate transmission of the pressure of the drill.
But in above-mentioned instrument practical application, for waterpower pulse drag reduction drilling well, the oscillating force how improving waterpower pulse axial oscillation friction reducer perplexs site operation personnel always, the moushroom valve eccentric structure generally taked at present, by adopting the form of elliptical aperture be changed area of passage and then produce pulsating pressure, such as the drill stem axial oscillating friction reducer that a kind of motor of narration in patent publication No. CN202883880U drives, this type of instrument structure cannot realize according to on-the-spot actual demand to regulate the amplitude of waterpower pulse, it is only capable of in little range format and adjusts waterpower pulse amplitude, limited efficiency during this type of instrument scene application made, cannot the wider frictional resistance effectively abolished between drilling tool and the borehole wall, the length of vibration drilling tool is very limited.
Summary of the invention
Present invention aims to prior art Problems existing, the waterpower pulse generating means of a kind of adjustable amplitude is provided, for improving the amplitude of the lengthwise oscillations that waterpower pulse axial oscillation friction reducer is produced in for extended reach well drilling process by self, thus being greatly reduced between DHA and well frictional resistance, the pressure of the drill is made to be delivered to accurately and effectively on drill bit.
The technical scheme is that
A kind of waterpower pulse generating means of adjustable amplitude, it is made up of screw motor and waterpower pulse valve group pipe nipple two parts, screw motor includes field frame assembly 3 and rotor 4, it is characterised in that: waterpower pulse valve group pipe nipple included water swivel 5, dynamic valve 6, spring 7, lining 8, determined valve 9, pressed joint 10 and lower contact 11；Wherein, crossing water swivel 5 and be connected to the bottom of rotor 4, dynamic valve 6 was sleeved on water swivel 5 bottom, crosses and is equipped with spring 7 between water swivel 5 and dynamic valve 6, make valve 6 by spring 7 and determine valve 9 and combine closely, moving valve 6 and on its faying face, constitute eccentric orfice with the center flow channels hole determining valve 9 and coordinate；Lining 8 is assemblied in field frame assembly 3 with in dynamic valve 6 annular space, and lining 8 has run-track shaped cross section；Determine valve 9 to fix with field frame assembly 3；Lower contact 11 is connected to field frame assembly 3 bottom, and is limited to determining valve 9 in field frame assembly 3 by pressed joint 10；Described motor is 1:2 screw motor, and rotor 4 center is eccentric structure, and rotor 4 does straight reciprocating motion along the long axis direction in lining 8 cross section.
Such scheme farther includes:
Dynamic valve 6 center flow channels hole is eccentric orfice, and meets dynamic valve 6 centre bore eccentric direction in the elliptical trajectory of rotor 4 reciprocally swinging in the heart.
Determining valve 9 center flow channels hole is eccentric orfice, and meets and determine valve 9 centre bore eccentric direction in the elliptical trajectory of rotor 4 reciprocally swinging in the heart.
Determine valve 9 and pass through directional bond 12 axial lock in field frame assembly 3.
Described screw motor also includes plate washer 2, and plate washer 2 is arranged on after field frame assembly 3 top is connected with field frame assembly 3 by screw thread and rotor 4 is carried out axial limiting.
Described pressed joint 10 and lower contact 11 are structure as a whole；Field frame assembly 3 is connected to top connection 1.
The design principle of the present invention: the kinetic characteristic according to positive displacement drilling fluid single head motor (i.e. 1:2 motor), on arbitrary section, screw sections on this cross section does straight reciprocating motion centrally along the long axis direction in lining cross section, and the range of movement one made fixes in the effective cross-section of bore of stator racetrack.And rotor is the planetary motion of e at bore of stator as eccentric throw, i.e. not only rotation but also revolution motion.Under 1:2 structure motor, the rotating ratio of revolution and rotation is 1:1, and rotation rotating speed is together decided on by the every discharge capacity that turns of drilling mud and motor.On the arbitrary cross-section of screw rod bushing pair, screw rotor section is centrally located on the major axis of lining section；Along with the rotation of screw rod, screw rotor section does straight reciprocating motion centrally along the long axis direction of lining section.
Above-mentioned rotor is utilized to do straight reciprocating motion on the cross section of stator, the dynamic valve that rotor bottom couples is coordinated with the valve bias of determining being fixed in field frame assembly, in the process that rotor rotates, dynamic valve moves back and forth on valve determining, and along with the change of movement position, the area of passage that both are formed is in continuous change, and when maximum area is both through holes coincidences, namely rotor motion is to the through hole of stator；Minimum area is just offset to farthest for both, is namely in the other end in racetrack cross section.Due to being continually changing of area of passage, constantly change thus forming the fluid Pressure Drop herein, thus forming axial compressive force vibration.
To sum up, vibration generating mechanism is a dynamic valve and a standing valve composition, dynamic valve is connected with the rotor of positive positive displacement drilling fluid motor, determine valve and be fixed on the bottom of joint, owing to the rotor for 1:2 is than configuration, when the rotor is turning, dynamic valve is made the front and back of near-linear and is swept, runner periodically can be produced restriction by dynamic valve in determining the process swept above valve, and total flow area will produce change between maximum and minimum, thus producing desired pressure pulse in drill string.
The adjustment of amplitude is realized by the limit method of following structure:
The centre bore determining valve is offset a position relative to determining valve kernel of section, determining valve centre bore eccentric throw is e1, when e1=e(eccentricity of rotor), and skew direction just in the movement locus of rotor reciprocally swinging in the heart time (determining valve centre bore deviation post on rotor reciprocally swinging major axis), this organization plan is that rotor drives dynamic valve often to rotate one week, only doing on dynamic valve and once move back and forth, minimax area only changes once, causes axial oscillation once.The waterpower pulse now produced is maximum, it is possible to than no matter, which kind of other oval eccentric structure or other eccentric structures are all big for the vibration of the waterpower pulse of generation, and the effect that will not produce to dam, and produce to suppress pump problem.By adjusting motor rotor eccentric distance e, or adjust the size (generally making e1 e) of the centre bore eccentric distance e 1 determining valve, it is possible to produce the waterpower pulse amplitude size arbitrarily needed.
Said structure adjusts mode and can also realize by adjusting dynamic valve centre bore eccentric distance e 2, the eccentric direction of dynamic valve centre bore e2 also in the stator rubber of rotor reciprocally swinging in elliptical trajectory in the heart.
The waterpower pulse generating means of the adjustable amplitude of the present invention is applied to the bottom of hydraulic oscillation instrument, feed back on the response piston within vibration pipe nipple by the significantly waterpower pulse produced, produce corresponding oscillating force, the size of oscillating force is proportional with waterpower pulse amplitude, waterpower pulse amplitude is increased by adjusting, the drill stem axial oscillating friction reducer oscillating force that motor drives can be improved, break through the restriction of the drilling depth of extended reach well, the target spot making extended reach well is farther, strengthens the performance of power drilling tool each side by most simple and effective way.
The present invention realizes dynamic valve and the reciprocally swinging determining between valve by utilizing the revolution of screw rod；Determine between valve and dynamic valve without vibration, determine valve and be placed directly against all the time on dynamic valve；The construction features of dynamic valve, bias is eccentric consistent with rotor, utilizes the bias of motor to provide the change of moushroom valve area, and bias is more big, and moushroom valve area change is more big, realizes producing the waterpower pulse of adjustable amplitude by bias change；Moving valve, determine valve directly in stator case lower end, simple in construction, valve member is few, and cost is low, reliable and stable.
Accompanying drawing explanation
Fig. 1 is adjustable amplitude waterpower pulse generating means structure chart；
Fig. 2 is waterpower pulse valve group pipe nipple schematic diagram；
Fig. 3 is adjustable amplitude waterpower pulse generating means E-E generalized section；
Fig. 4 is lining cross-section structure；
Fig. 5 is dynamic valve eccentric structure schematic diagram；
Waterpower pulse principle schematic is produced when Fig. 6 is work；
Oscilloscope display pulse curve when Fig. 7 is the work of waterpower pulse generating means.
In figure: 1 top connection, 2 plate washers, 3 field frame assemblies, 4 rotors, 5 cross water swivel, and 6 dynamic valves, 7 springs, 8 linings, 9 determine valve, 10 pressed joints, 11 lower contacts, 12 directional bonds.
Detailed description of the invention
Below in conjunction with Figure of description, the invention will be further described.
Embodiment 1:
Referring to Fig. 1, adjustable amplitude waterpower pulse generating means is made up of 1:2 motor and waterpower pulse valve group pipe nipple two parts.1:2 motor includes top connection 1, plate washer 2, field frame assembly 3, rotor 4, top connection 1 and field frame assembly 3 are threaded connection, field frame assembly 3 mounted inside has rotor 4, plate washer 2 is connected with field frame assembly 3 by screw thread on field frame assembly 3 top, baffle plate 2 is in field frame assembly 3 internal limitations rotor 4 upwards vibration, when drilling fluid is by 1:2 motor, drives rotor 4 to rotate, according to 1:2 motor characteristics, straight reciprocating motion is done along the long axis direction in lining cross section in rotor 4 center on rotor arbitrary section.
Referring to Fig. 2, waterpower pulse valve group pipe nipple included water swivel 5, dynamic valve 6, spring 7, lining 8, determined valve 9, pressed joint 10, lower contact 11, directional bond 12.Cross water swivel 5 and be connected to the bottom of rotor 4, cross the dynamic valve 6 of water swivel 5 bottom suit, cross and between water swivel 5 and dynamic valve 6, be equipped with spring 7, make valve 6 by spring 7 and determine valve 9 and combine closely, lining 8 is assemblied in field frame assembly 3 and dynamic valve 6 annular space, adjust dynamic valve 6 and the mismachining tolerance determining valve 9 when being used for assembling, determine valve 9 and fixed with field frame assembly 3 by directional bond 12, and make the eccentric orfice bias orientation determining valve 9 consistent with the long axis direction in lining 8 cross section by directional bond 12.
Referring to Fig. 3 and Fig. 4, during work, drilling fluid passes through motor, again through crossing water swivel 5, by dynamic valve 6, utilizing rotor 4 to do straight reciprocating motion on the cross section of field frame assembly 3, the dynamic valve 6 that rotor 4 bottom couples does straight line revolution equally, in the process that rotor 4 rotates, dynamic valve 6 moves back and forth on valve 9 determining, and along with the change of movement position, the area that both are formed is in continuous change, when maximum area is both through holes coincidences, namely rotor motion is to the through hole of stator；Minimum area is just offset to farthest for both, is namely in the other end in racetrack cross section.Due to being continually changing of area of passage, constantly change thus forming the fluid Pressure Drop herein, thus forming waterpower pulse effect.
Referring to Fig. 6, the adjustment of amplitude is by realizing the eccentric throw that centre bore one distance of skew determining valve 9 is e1 (producing waterpower pulse amplitude during e1=e maximum), and skew direction just in the movement locus of rotor reciprocally swinging in the heart, this construction rotor 4 drives dynamic valve 6 often to rotate one week, dynamic valve 6 only does and once moves back and forth, minimax area only changes once, causes waterpower pulse one cycle of change.If now determining valve 9 centre bore to take eccentric e1, and position is on rotor reciprocally swinging major axis, the waterpower pulse of generation is maximum, it is possible to than no matter, which kind of other oval eccentric structure or other eccentric structures are all big for the vibration of the waterpower pulse of generation, and effect of damming will not be produced, produce to suppress pump problem.By adjusting the eccentric e of motor rotor 4, or adjusting the centre bore eccentric distance e 1 size (e1 e) determining valve 9, it is possible to produce the waterpower pulse amplitude size arbitrarily needed, during the work of waterpower pulse generating means, oscilloscope display pulse curve is referring to Fig. 7.
Embodiment 2:
Amplitude adjusts mode and can also realize by adjusting the eccentric distance e 2 of dynamic valve 6.(structure of embodiment 1 is determined valve 9 for eccentric orfice, dynamic valve 6 is centre bore placed in the middle), in the present embodiment, with reference to Fig. 5, dynamic valve 6 centre bore has eccentric distance e 2 and determines valve 9 is centre bore placed in the middle (eccentric distance e 1 is 0), the eccentric direction of dynamic valve 6 centre bore eccentric distance e 2 in the stator rubber of rotor 4 reciprocally swinging in elliptical trajectory in the heart, the waterpower pulse curve shown in equally possible generation Fig. 7.
Claims (6)
1. the waterpower pulse generating means of an adjustable amplitude, it is made up of screw motor and waterpower pulse valve group pipe nipple two parts, screw motor includes field frame assembly (3) and rotor (4), it is characterised in that: waterpower pulse valve group pipe nipple included water swivel (5), dynamic valve (6), spring (7), lining (8), determined valve (9), pressed joint (10) and lower contact (11)；Wherein, cross water swivel (5) and be connected to the bottom of rotor (4), dynamic valve (6) was sleeved on water swivel (5) bottom, cross and between water swivel (5) and dynamic valve (6), be equipped with spring (7), make valve (6) by spring (7) and determine valve (9) and combine closely, move valve (6) and on its faying face, constitute eccentric orfice with the center flow channels hole determining valve (9) and coordinate；Lining (8) is assemblied in field frame assembly (3) with in dynamic valve (6) annular space, and lining (8) has run-track shaped cross section；Determine valve (9) to fix with field frame assembly (3)；Lower contact (11) is connected to field frame assembly (3) bottom, and by pressed joint (10) will determine valve (9) be limited in field frame assembly (3)；Described motor is 1:2 screw motor, and rotor (4) center is eccentric structure, and rotor (4) does straight reciprocating motion along the long axis direction in lining (8) cross section.
2. the waterpower pulse generating means of adjustable amplitude according to claim 1, it is characterised in that: dynamic valve (6) center flow channels hole is eccentric orfice, and meets dynamic valve (6) centre bore eccentric direction in the elliptical trajectory of rotor (4) reciprocally swinging in the heart.
3. the waterpower pulse generating means of adjustable amplitude according to claim 1, it is characterised in that: determining valve (9) center flow channels hole is eccentric orfice, and meets and determine valve (9) centre bore eccentric direction in the elliptical trajectory of rotor (4) reciprocally swinging in the heart.
4. the waterpower pulse generating means of adjustable amplitude according to claim 3, it is characterised in that: determine valve (9) by directional bond (12) axial lock in field frame assembly (3).
5. the waterpower pulse generating means according to claim 1 or 2, adjustable amplitude described in 3,4, it is characterized in that: described screw motor also includes plate washer (2), plate washer (2) is arranged on after field frame assembly (3) top is connected with field frame assembly (3) by screw thread and rotor (4) is carried out axial limiting.
6. the waterpower pulse generating means according to claim 1 or 2, adjustable amplitude described in 3,4, it is characterised in that: described pressed joint (10) and lower contact (11) are structure as a whole；Field frame assembly (3) is connected to top connection (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833612.9A CN105781418A (en) | 2014-12-26 | 2014-12-26 | Amplitude-adjustable hydraulic pulse generating device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410833612.9A CN105781418A (en) | 2014-12-26 | 2014-12-26 | Amplitude-adjustable hydraulic pulse generating device |
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| Publication Number | Publication Date |
|---|---|
| CN105781418A true CN105781418A (en) | 2016-07-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410833612.9A Pending CN105781418A (en) | 2014-12-26 | 2014-12-26 | Amplitude-adjustable hydraulic pulse generating device |
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| CN (1) | CN105781418A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441753A (en) * | 2018-12-27 | 2019-03-08 | 河北盛多威泵业制造有限公司 | Nutation type R plug pump |
| CN110748297A (en) * | 2019-09-19 | 2020-02-04 | 西南石油大学 | Device and method for reducing friction between drilling tool and well wall |
| CN111188576A (en) * | 2020-03-26 | 2020-05-22 | 成都佳琛石油机械有限公司 | Low-energy-consumption hydraulic oscillator |
| CN112049572A (en) * | 2019-06-05 | 2020-12-08 | 中石化石油工程技术服务有限公司 | Hydraulic pulser and hydraulic oscillator |
| CN113756708A (en) * | 2020-06-04 | 2021-12-07 | 中石化石油工程技术服务有限公司 | Eccentric vibrating type hydraulic pulse generating device |
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| RU2232252C1 (en) * | 2002-10-23 | 2004-07-10 | ОАО НПО "Буровая техника" | Device for generating hydraulic pressure impulses in a well |
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| CN102418479A (en) * | 2011-08-01 | 2012-04-18 | 西南石油大学 | Axial oscillating tool for drill string |
| CN102705140A (en) * | 2012-05-30 | 2012-10-03 | 中国石油化工集团公司 | Drilling power tool, drilling tool and drilling method for forming boreholes |
| CN103835654A (en) * | 2014-03-03 | 2014-06-04 | 西南石油大学 | Friction-reduction and amplitude-increasing downhole tool |
| CN204402356U (en) * | 2014-12-26 | 2015-06-17 | 中石化胜利石油工程有限公司钻井工艺研究院 | A kind of waterpower pulse generating means of adjustable amplitude |
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- 2014-12-26 CN CN201410833612.9A patent/CN105781418A/en active Pending
Patent Citations (6)
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| RU2232252C1 (en) * | 2002-10-23 | 2004-07-10 | ОАО НПО "Буровая техника" | Device for generating hydraulic pressure impulses in a well |
| RU2005102136A (en) * | 2005-01-28 | 2006-07-10 | Эндергейдж Лимитед (Gb) | SHOCK-ROTARY DEVICE (OPTIONS) |
| CN102418479A (en) * | 2011-08-01 | 2012-04-18 | 西南石油大学 | Axial oscillating tool for drill string |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109441753A (en) * | 2018-12-27 | 2019-03-08 | 河北盛多威泵业制造有限公司 | Nutation type R plug pump |
| CN109441753B (en) * | 2018-12-27 | 2024-02-13 | 河北捷士达装备制造有限公司 | Pendulum type R plug pump |
| CN112049572A (en) * | 2019-06-05 | 2020-12-08 | 中石化石油工程技术服务有限公司 | Hydraulic pulser and hydraulic oscillator |
| CN110748297A (en) * | 2019-09-19 | 2020-02-04 | 西南石油大学 | Device and method for reducing friction between drilling tool and well wall |
| CN110748297B (en) * | 2019-09-19 | 2021-01-12 | 西南石油大学 | Device and method for reducing friction between drilling tool and well wall |
| CN111188576A (en) * | 2020-03-26 | 2020-05-22 | 成都佳琛石油机械有限公司 | Low-energy-consumption hydraulic oscillator |
| CN113756708A (en) * | 2020-06-04 | 2021-12-07 | 中石化石油工程技术服务有限公司 | Eccentric vibrating type hydraulic pulse generating device |
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Application publication date: 20160720 |