CN109441356A - Hydroscillator based on cam and impeller - Google Patents
Hydroscillator based on cam and impeller Download PDFInfo
- Publication number
- CN109441356A CN109441356A CN201910015308.6A CN201910015308A CN109441356A CN 109441356 A CN109441356 A CN 109441356A CN 201910015308 A CN201910015308 A CN 201910015308A CN 109441356 A CN109441356 A CN 109441356A
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- China
- Prior art keywords
- impeller
- housing
- cam
- throttle plate
- straight pin
- 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.)
- Granted
Links
- 238000005553 drilling Methods 0.000 claims abstract description 33
- 239000012530 fluid Substances 0.000 claims description 11
- 238000003466 welding Methods 0.000 claims description 7
- 239000007789 gas Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 230000009849 deactivation Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000003111 delayed effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 230000002028 premature Effects 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK 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
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of oscillators with drag reduction speed-raising in the fields such as oil drilling.Its technical solution is: top connection, outer housing and lower contact pass sequentially through screw thread and connect, and throttle plate is connect with top connection by screw thread, and throttle plate is connect with straight pin by lock-screw, and straight pin is between impeller and throttle plate；Impeller shaft, impeller and impeller housing are welded as a whole, and string bearing is equipped between impeller housing and outer housing, and string bearing upper and lower ends are positioned by inner and outer sleeves, and impeller housing and cam are closely；Cam is realized with outer housing by spline circumferentially positioned, and lower cam end and lower contact closely, realize axially position.It is designed inside novel hydropower oscillator based on cam and impeller of the invention without rubber structure, structure is simple, and can effectively reduce the frictional resistance of horizontal well, extended reach well lower drilling tool and the borehole wall, enhances load transfer ability, while improving drilling efficiency, it can avoid the down-hole accidents such as viscous card.
Description
Technical field
The invention belongs to a kind of Novel down-hole tools of oil-gas drilling engineering field, especially have drag reduction speed-raising function
The novel hydropower oscillator of energy.
Background technique
In recent years, with the continuous development of China's industry, petroleum, the demand of natural gas and yield are also increasing.So
And in order to alleviate the shortage problem of China's oil resource, people start to the field of the environmental conditions such as deep-well, ultradeep well sternness into
Row oil exploitation.The exploitation of new oil gas well makes drilling engineering face more complicated situation, to meet stepout well condition or new oil
The needs of gas resource (such as coal bed gas, shale gas, marine oil and gas), corresponding novel drilling method are also continued to develop with tool.?
In horizontal well and extended reach well, increase with well depth is entered, the frictional force between drill string and the borehole wall, which is gradually increased, causes bit pressure to damage
It loses, is also unfavorable for the raising of rate of penetration, while can also seriously affect the target diameter and hole quality of drilling well, this is also restriction level
The key factor that well, extended reach well technology develop.In the method solved these problems, the well that mechanically works
Lower tool realizes that energy is converted using drilling fluid, and certain expected vibration is generated with this, is quickly grown in recent years.It is bored in underground
Column introduces hydroscillator, and drill string can be made to generate the periodic vibration of certain frequency and amplitude, makes quiet during being sent into
Frictional resistance becomes to move frictional resistance, frictional resistance, raising rate of penetration, the horizontal drilling depth of increase and shortening drilling during reducing feeding
It has a clear superiority in terms of period.The stratum working environment that drilling engineering faces is complicated, and drilling depth is continuously increased, and leads to drill bit
For the not high drill bit of efficiency of breaking rock when creeping into deep-well stratum, generally existing rate of penetration is very slow, drilling well cost at high cost, and drilling well
The raising of speed is crucial to be how to improve the efficiency of breaking rock of drill bit.Meanwhile live overhigh pumping pressure limits the discharge capacity of drilling well,
Influence rate of penetration and wellbore cleaning；And multiple MWD failure, PDC drill bit premature deactivation may occur and in oil-base mud
The phenomenon that with unstable performance in high temperature and high failure rate.
A kind of novel hydropower oscillator based on cam and impeller is designed in order to solve existing issue invention, utilizes drilling well
Liquid realizes energy conversion, generates axial vibration, acts on drill bit by airframe structure, realizes drilling process antifriction, increases
Drill bit available weight improves rate of penetration, reduces MWD failure and extends the purpose of drill string such as well location moves.
Summary of the invention
It is an object of the invention to: to overcome existing level well, extended reach well to creep into, frictional resistance is big, and well head bit pressure can not be effective
Pass to the deficiency of drill bit, the large rock-carrying ability of drilling fluid is not high and existing axial vibration tool using effect is undesirable asks
Topic, designs a kind of novel hydropower oscillator.
To achieve the above object, the technical solution adopted by the present invention is that: the novel hydropower oscillator based on cam and impeller,
By top connection, throttle plate, straight pin, lock-screw, impeller, impeller shaft, impeller housing, string bearing, inner sleeve, outer sleeve,
Outer housing, cam, flat key, lower contact composition, it is characterised in that top connection, outer housing, lower contact pass sequentially through screw thread company
It connects；It is equipped with through-hole among throttle plate, is connect between top connection by lock-screw；Straight pin and throttle plate, top connection
Between connected by lock-screw, straight pin limits impeller；Impeller shaft and impeller are connect by welding with impeller housing；
The end surfaces up and down of impeller housing are curved surface, and impeller housing is rotated along cam while rotating, realize axial movement；Impeller
String bearing is installed between shell and outer housing, can reduce frictional force when impeller housing movement；Go here and there bearing by inner sleeve,
Outer sleeve, which is realized, to be fixed, and inner sleeve, outer sleeve are stuck between string bearing and outer housing, realize positioning；Impeller shaft is ladder shaft-like,
Front end is welded with nose cone, and lower end is connected by welding with impeller housing, by axial movement, realizes drilling fluid area of passage
Variation generates axial vibration；Cam upper end is curved surface, closely impeller housing, and axially position is realized in lower end closely lower contact；It is convex
It is connected, is realized circumferentially positioned by flat key between wheel and outer housing.
The present invention compared with the prior art, the beneficial effect is that: (1) only need lesser standpipe pressure can generate axis
To pulse；(2) high-frequency vibration effectively overcomes the frictional resistance of lower drilling tool, realizes effective transmitting of well head bit pressure, improves machine
Tool drilling speed, simultaneously as the vibration of tool itself, prevents drilling tool to be attached on the lower borehole wall for a long time, so as to avoid undergrounds such as viscous cards
The generation of accident.(3) it without the power assembly of similar motor, is substituted by impeller, can produce positive pulse pressure drop, can bored improving
Pump pressure is reduced while fast, is reduced the consumption to pump, is delayed the passivation of PDC drill bit；(4) novel hydropower based on cam and impeller
Oscillator can provide a frequency adjustable periodical axial impact force；(5) on MWD almost without influence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the hydroscillator of the present invention based on cam and impeller.
In figure: 1- top connection, 2- throttle plate, 3- straight pin, 4- lock-screw, 5- impeller shaft, 6- impeller, 7- impeller housing
Body, 8- string bearing, 9- inner sleeve, 10- outer sleeve, 11- outer housing, 12- cam, 13- flat key, 14- lower contact.
Fig. 2 is flat key type impeller schematic three dimensional views of the present invention.
Fig. 3 is spline impeller schematic three dimensional views of the present invention.
Fig. 4 is the sectional view of throttle plate of the present invention.
In figure: 2- throttle plate, 4- lock-screw.
Fig. 5 is impeller housing schematic three dimensional views of the present invention.
Fig. 6 is cam schematic three dimensional views of the present invention.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings: with reference to the accompanying drawings shown in 1, being shaken based on the waterpower of cam and impeller
Device is swung, by top connection, throttle plate, straight pin, lock-screw, impeller, impeller shaft, impeller housing, string bearing, inner sleeve, outer
Sleeve, outer housing, cam, flat key, lower contact composition, it is characterised in that top connection 1, outer housing 11, lower contact 14 pass sequentially through
Screw thread connection；It is equipped with through-hole among throttle plate 2, is connect between top connection 1 by lock-screw 4；Straight pin 3 and section
It is connected between stream valve plate 2, top connection 1 by lock-screw 4, straight pin 3 limits impeller 6；Impeller shaft 5 and impeller 6 are logical
Welding is crossed to connect with impeller housing 7；The end surfaces up and down of impeller housing 7 are curved surface, and impeller housing 7 is while rotating along convex
12 rotation of wheel, realizes axial movement；String bearing 8, string bearing 8 and impeller housing 7 are installed between impeller housing 7 and outer housing 11
Between be gap-matched, can reduce impeller housing 7 move when frictional force；Bearing 8 of going here and there passes through inner sleeve 9, outer sleeve 10
It realizes and fixes, inner sleeve 9, outer sleeve 10 are stuck between string bearing 8 and outer housing 11, realize positioning；Impeller shaft 5 is multi-diameter shaft
Shape, front end are welded with nose cone, and lower end is connected by welding with impeller housing 11, by axial movement, realize drilling fluid overcurrent
The variation of area generates axial vibration；12 upper end of cam is curved surface, closely impeller housing 11, and lower end closely lower contact 14 are realized
Axially position；It is connected, is realized circumferentially positioned by flat key 13 between cam 12 and outer housing 11.
In the course of work, the hydroscillator lower part based on cam and impeller connects threaded rod power drill set and is used cooperatively, and passes through
It generates axial vibration and acts on lower drilling tool or continuous oil pipe tool string, substantially reduce frictional resistance and improve the brill being transmitted on drill bit
Pressure, realizes the drilling and grinding operation of long horizontal sections.The drilling fluid flowed out from drill string directly flows into inside hydroscillator from top connection 1,
The drilling fluid impact impact impeller 6 flowed through from top connection 1, impeller axis 5 and impeller housing 7 rotate together, by drilling fluid
A part of pressure potential is converted to mechanical energy, and supervenes certain axial force.Impeller shaft 5, impeller 6 and impeller housing 7 exist
It rotates while rotating along cam 12, is pushed ahead along drilling tool wellbore, generate axial movement, while generating axial vibration
Dynamic to be substantially reduced resistance common in horizontal segment construction, straight pin 3 limits impeller 6.The axial movement of impeller shaft 5 changes
Area of passage between impeller shaft 5 and throttle plate 2 makes internal tool pressure generate cyclic fluctuation, to make based on convex
The hydroscillator of wheel and impeller generates a cycle vibration, and the large rock-carrying ability for improving drilling fluid significantly improves rate of penetration.
It is designed inside hydroscillator based on cam and impeller without rubber structure, greatly strengthens the downhole tool in high temperature, oil base
The stability to work in mud and contaminated liquid phase environment.
Claims (7)
1. the hydroscillator based on cam and impeller, by top connection, throttle plate, straight pin, lock-screw, impeller, impeller
Axis, impeller housing, string bearing, inner sleeve, outer sleeve, outer housing, cam, flat key, lower contact composition, it is characterised in that top connection
(1), outer housing (11), lower contact (14) pass sequentially through screw thread connection；It is equipped with through-hole among throttle plate (2), and above connects
It is connected between head (1) by lock-screw (4)；Straight pin (3) and throttle plate (2), top connection pass through lock-screw between (1)
(4) it connects, straight pin (3) limits impeller (6)；Impeller shaft (5) and impeller (6) are connected by welding and impeller housing (7)
It connects；The end surfaces up and down of impeller housing (7) are curved surface, and impeller housing (7) is rotated along cam (9) while rotating, are realized
Axial movement；String bearing (8) is installed between impeller housing (7) and outer housing (11), string bearing (8) by inner sleeve (9) and
Outer sleeve (10) realizes positioning；Impeller shaft (5) is ladder shaft-like, and front end is welded with nose cone, and lower end passes through welding and impeller outer
Shell (11) is connected, and the axial movement of impeller shaft (5) will change the variation of throttle plate (2) intermediate throughholes drilling fluid area of passage,
And so on, a cycle fluctuation will be generated, realizes that energy is converted using drilling fluid, generates axial vibration；Cam (12)
Upper end is curved surface, closely impeller housing (7), and axially position is realized in lower end closely lower contact (14)；Cam (12) and outer housing
(11) it is connected, is realized circumferentially positioned by flat key (13) between.
2. impeller housing according to claim 1, it is characterised in that: the upper and lower surface of the impeller housing (7) is
Curved surface can rotate while rotating along cam (12), realize axial movement.
3. impeller shaft according to claim 1, it is characterised in that: described impeller shaft (5) front end is welded with nose cone, leads to
The variation of drilling fluid area of passage can be realized with throttle plate (2) by crossing axial movement, generate axial pulse.
4. throttle plate according to claim 1, it is characterised in that: the throttle plate (2) passes through lock-screw (4)
It is connect with top connection (1), straight pin (3)；Its axial direction is uniformly distributed 6 lock-screws.
5. the connection type of impeller according to claim 1, impeller shaft and impeller housing, it is characterised in that: the leaf
Wheel (6), impeller shaft (5) and the connection type of impeller housing (7) are joined together by welding.
6. impeller according to claim 1, it is characterised in that: the impeller (6) is axial and is axially not fixed, by justifying
Pin (3) is limited.
7. straight pin according to claim 1, it is characterised in that: the straight pin (3) and top connection (1) passes through locking
Screw (4) connection limits impeller (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015308.6A CN109441356B (en) | 2019-01-08 | 2019-01-08 | Hydraulic oscillator based on cam and impeller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015308.6A CN109441356B (en) | 2019-01-08 | 2019-01-08 | Hydraulic oscillator based on cam and impeller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109441356A true CN109441356A (en) | 2019-03-08 |
| CN109441356B CN109441356B (en) | 2020-08-28 |
Family
ID=65542613
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910015308.6A Active CN109441356B (en) | 2019-01-08 | 2019-01-08 | Hydraulic oscillator based on cam and impeller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109441356B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306600A (en) * | 2013-06-27 | 2013-09-18 | 深圳市百勤石油技术有限公司 | Cam-type axial rotary punching tool |
| CN205172416U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Mechanical oscillation strikes transmission shaft |
| CN206581892U (en) * | 2014-01-27 | 2017-10-24 | Sjm设计有限公司 | Fluid pulse equipment |
| CN107420061A (en) * | 2017-09-29 | 2017-12-01 | 西南石油大学 | Underbalance pulse oscillator |
| CN107664013A (en) * | 2017-11-07 | 2018-02-06 | 西南石油大学 | Vane type axial and circumferential composite impact device |
-
2019
- 2019-01-08 CN CN201910015308.6A patent/CN109441356B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103306600A (en) * | 2013-06-27 | 2013-09-18 | 深圳市百勤石油技术有限公司 | Cam-type axial rotary punching tool |
| CN206581892U (en) * | 2014-01-27 | 2017-10-24 | Sjm设计有限公司 | Fluid pulse equipment |
| CN205172416U (en) * | 2015-10-30 | 2016-04-20 | 中石化石油工程技术服务有限公司 | Mechanical oscillation strikes transmission shaft |
| CN107420061A (en) * | 2017-09-29 | 2017-12-01 | 西南石油大学 | Underbalance pulse oscillator |
| CN107664013A (en) * | 2017-11-07 | 2018-02-06 | 西南石油大学 | Vane type axial and circumferential composite impact device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109441356B (en) | 2020-08-28 |
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