CN109538124A - Ramp type impeller hydroscillator - Google Patents
Ramp type impeller hydroscillator Download PDFInfo
- Publication number
- CN109538124A CN109538124A CN201910015309.0A CN201910015309A CN109538124A CN 109538124 A CN109538124 A CN 109538124A CN 201910015309 A CN201910015309 A CN 201910015309A CN 109538124 A CN109538124 A CN 109538124A
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- CN
- China
- Prior art keywords
- impeller
- housing
- bearing
- screw
- throttle plate
- 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 38
- 230000009467 reduction Effects 0.000 claims abstract description 4
- 239000012530 fluid Substances 0.000 claims description 14
- 238000003466 welding Methods 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 2
- 230000008859 change Effects 0.000 claims description 2
- 125000004122 cyclic group Chemical group 0.000 claims description 2
- 239000007789 gas Substances 0.000 description 6
- 230000035515 penetration Effects 0.000 description 6
- 238000000034 method Methods 0.000 description 4
- 230000001965 increasing effect Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 239000012071 phase Substances 0.000 description 2
- 239000011435 rock Substances 0.000 description 2
- 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
- 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
- 238000005516 engineering process Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 239000007791 liquid phase Substances 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 230000010355 oscillation Effects 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
- 230000008569 process 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
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 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
-
- 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
- E21B12/00—Accessories for drilling tools
-
- 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
- E21B4/00—Drives for drilling, used in the borehole
- E21B4/16—Plural down-hole drives, e.g. for combined percussion and rotary drilling; Drives for multi-bit drilling units
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (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)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
Abstract
The invention discloses a kind of oscillators that mechanical separator speed is improved with drag reduction in the fields such as oil drilling.Its technical solution is: top connection, shell and lower contact pass sequentially through screw thread and connect；Throttle plate is connect with top connection by screw thread；Throttle plate is connect with straight pin by lock-screw；Straight pin is between impeller and throttle plate；Impeller shaft, impeller and impeller housing are welded as a whole, string bearing is installed between impeller housing and outer housing, bearing upper and lower ends of going here and there are positioned by inner and outer sleeves, impeller housing lower end is in contact with ball bearing upper end, ball bearing is mounted in short axle, and short axle and outer housing are connected through a screw thread and are fixed on outer housing.It is designed inside ramp type impeller hydroscillator 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.
In order to solve the novel hydropower oscillator that a kind of ramp type impeller is designed in existing issue invention, drilling fluid reality is utilized
Existing 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 pulse oscillator.
To achieve the above object, the technical solution adopted by the present invention is that: be based on ramp type impeller hydroscillator, connect from above
Head, throttle plate, straight pin, lock-screw A, impeller, impeller shaft, impeller housing, string bearing, inner sleeve, outer sleeve, shell
Body, ball bearing, short axle, lock-screw B, bearing (ball) cover, lower contact composition, it is characterised in that top connection, outer housing, lower contact according to
It is secondary to be connected by screw thread；It is equipped with through-hole among throttle plate, is connect between top connection by lock-screw A；Straight pin
It is connect between throttle plate, top connection by lock-screw A, straight pin limits impeller；Impeller shaft and impeller pass through
Welding is connect with impeller housing；Impeller shaft is ladder shaft-like, and front end is welded with nose cone, and lower end passes through welding and impeller outer shell phase
Even, it by axial movement, realizes the variation of drilling fluid area of passage, generates axial vibration；The end section up and down of impeller housing is equal
For inclined-plane, string bearing is installed between impeller housing and outer housing, can reduce frictional force when impeller housing movement；String bearing
It is realized and is fixed by inner sleeve, outer sleeve, inner sleeve, outer sleeve are stuck between string bearing and outer housing, realize positioning；Impeller outer
Shell is rotated along ball bearing while rotating, realizes axial movement, while ball bearing is rotated along short axle；Ball bearing is mounted on short
On axis, short axle is connect by lock-screw B with outer housing, bearing (ball) cover, and bearing (ball) cover can prevent mud from entering ball bearing.This
It is designed inside the novel hydropower oscillator of the ramp type impeller of invention without rubber structure, structure is simple, and can effectively reduce water
The frictional resistance of horizontal well, extended reach well lower drilling tool and the borehole wall, enhancing load transfer ability can while improving drilling efficiency
Avoid the down-hole accidents such as viscous card.
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) ramp type impeller hydroscillator can mention
For the adjustable periodical axial impact force of a frequency；(5) on MWD almost without influence.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of ramp type impeller oscillator of the present invention.
In figure: 1- top connection, 2- throttle plate, 3- straight pin, 4- lock-screw A, 5- impeller shaft, 6- impeller, 7- impeller
Shell, 8- string bearing, 9- inner sleeve, 10- outer sleeve, 11- outer housing, 12- ball bearing, 13- short axle, 14- lock-screw B, 15-
Bearing (ball) cover, 16- 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 the partial enlarged view of A in attached drawing 1 of the present invention, and enlargement ratio is 6 times.
In figure: 7- impeller housing；9- inner sleeve；10- outer sleeve；11- outer housing；12- ball bearing；13- short axle；14- lock
Tight screw B；15- bearing (ball) cover.
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, the ramp type impeller hydraulic oscillation
Device, by top connection 1, throttle plate 2, straight pin 3, lock-screw A4, impeller shaft 5, impeller 6, impeller housing 7, string bearing 8, interior
Sleeve 9, outer sleeve 10, outer housing 11, ball bearing 12, short axle 13, lock-screw B14, bearing (ball) cover 15, lower contact 16 form,
It is characterized in that top connection 1, outer housing 11, lower contact 1 pass sequentially through screw thread connection；Through-hole is equipped among throttle plate 2,
It is connect between top connection 1 by lock-screw A4；Pass through lock-screw A4 between straight pin 3 and throttle plate 2, top connection 1
Connection, straight pin 3 limit impeller 6；Impeller shaft 5 and impeller 6 are connect by welding with impeller housing 7；Impeller shaft 5 is rank
Terraced shaft-like, front end are welded with nose cone, and lower end is connected by welding with impeller housing 7, and the axial movement of impeller shaft 5, which will change, to be saved
The variation of 2 middle through-hole drilling fluid area of passage of valve is flowed, axial vibration is generated；The end surfaces up and down of impeller housing 7 are inclined-plane,
String bearing 8 is installed between impeller housing 7 and outer housing 11, can reduce frictional force when impeller housing 7 moves；String bearing 8
Positioning is realized by inner sleeve 9, outer sleeve 10, and inner sleeve 9, outer sleeve 10 are stuck between string bearing 8 and outer housing 11, and it is fixed to realize
Position；Impeller housing 7 is rotated along ball bearing 12 while rotating, realizes axial movement, while ball bearing 12 is along 13 turns of short axle
It is dynamic；Ball bearing 12 is mounted in short axle 13, and upper end is in contact with impeller housing 7, and can be under the action of frictional force along short axle
13 rotations, reduction and 7 contact area of impeller housing reduce frictional force when impeller housing 7 rotates；Short axle 13 passes through lock-screw
B14 is connect with outer housing 11, bearing (ball) cover (15), and bearing (ball) cover (15) can prevent mud from entering ball bearing (12).
In the course of work, ramp type impeller hydroscillator lower part connects threaded rod power drill set and is used cooperatively by generating axially
Effect of vibration substantially reduces frictional resistance and improves the bit pressure being transmitted on drill bit, realize in lower drilling tool or continuous oil pipe tool string
The drilling and grinding operation of long horizontal sections.The drilling fluid flowed out from drilling rod directly flows into inside hydroscillator from top connection 1, from top connection
1 drilling fluid flowed through directly impacts impeller 6, so that impeller 6 is generated rotary motion, and supervene certain axial force.Drilling fluid
After impacting impeller 6,6 impeller axis 5 of impeller and impeller housing 7 rotate together, generate waterpower pulse；Impeller housing 7
It rotates along ball bearing 9, and is pushed ahead along drilling tool wellbore while rotating, realize axial movement, while the axial direction of impeller shaft 5
The mobile area of passage for changing drilling fluid between impeller shaft 5 and throttle plate 2 and so on will generate a cycle
Fluctuation realizes that energy is converted using drilling fluid, generates axial vibration.The axial vibration of generation is significantly reduced in horizontal segment construction
Common resistance makes internal tool pressure generate cyclic fluctuation, so that ramp type impeller hydroscillator be made to generate a week
The vibration of phase property, improves the large rock-carrying ability of drilling fluid, significantly improves rate of penetration.Without rubber inside ramp type impeller hydroscillator
Structure design, greatly strengthens the stability that the downhole tool works in high temperature, oil-base mud and contaminated liquid phase environment.
Claims (7)
1. ramp type impeller hydroscillator is based on, by top connection, throttle plate, straight pin, lock-screw A, impeller, impeller
Axis, impeller housing, string bearing, inner sleeve, outer sleeve, outer housing, ball bearing, short axle, lock-screw B, bearing (ball) cover, lower contact
Composition, it is characterised in that top connection (1), outer housing (11), lower contact (16) pass sequentially through screw thread connection；Throttle plate
(2) intermediate to be equipped with through-hole, it is connect between top connection (1) by lock-screw A (4)；Straight pin (3) and throttle plate (2), on
It is connected between connector (1) by lock-screw A (4), straight pin (3) limits impeller (6)；Impeller shaft (5) and impeller (6)
It is connect by welding with impeller housing (7)；The end surfaces up and down of impeller housing (7) are inclined-plane, impeller housing (7) and outer housing
(11) string bearing (8) is installed, string bearing (8) realizes positioning, impeller housing by inner sleeve (9) and outer sleeve (10) between
(7) it is rotated while rotating along ball bearing (12), realizes axial movement, while ball bearing (12) is rotated along short axle (13)；
Impeller shaft (5) is ladder shaft-like, and front end is welded with nose cone, and lower end is connected by welding with impeller housing (7), impeller shaft (5)
Axial movement will change throttle plate (2) intermediate throughholes drilling fluid area of passage variation and so on will generate one
Cyclic fluctuation realizes that energy is converted using drilling fluid, generates axial vibration；Ball bearing (12) is mounted on short axle (12), short
Axis (12) is connect by lock-screw B (14) with outer housing (11), bearing (ball) cover (15), bearing (ball) cover (15) can prevent mud into
Enter ball bearing (12).
2. impeller housing according to claim 1, it is characterised in that: the upper and lower surface of the impeller housing (7) is
Inclined-plane can rotate while rotating along ball bearing (13), 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. ball bearing according to claim 1, it is characterised in that: ball bearing (12) upper end and impeller housing (7)
It is in contact, and can be rotated under the action of frictional force along short axle (13), reduced and impeller housing (7) contact area, reduction leaf
Frictional force when hub cap (7) rotates.
5. throttle plate according to claim 1, it is characterised in that: the throttle plate (2) passes through lock-screw A
(4) it is connect with top connection (1), straight pin (3)；Its axial direction is uniformly distributed 6 lock-screws.
6. 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.
7. straight pin according to claim 1, it is characterised in that: the straight pin (3) and top connection (1) passes through locking
Screw A (4) connection limits impeller (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015309.0A CN109538124B (en) | 2019-01-08 | 2019-01-08 | Inclined plane type impeller hydraulic oscillator |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910015309.0A CN109538124B (en) | 2019-01-08 | 2019-01-08 | Inclined plane type impeller hydraulic oscillator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109538124A true CN109538124A (en) | 2019-03-29 |
| CN109538124B CN109538124B (en) | 2020-09-18 |
Family
ID=65834389
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910015309.0A Active CN109538124B (en) | 2019-01-08 | 2019-01-08 | Inclined plane type impeller hydraulic oscillator |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109538124B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404431A (en) * | 2021-06-21 | 2021-09-17 | 中石化石油机械股份有限公司 | Three-dimensional vibration hydraulic oscillator and processing method |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202988113U (en) * | 2012-11-19 | 2013-06-12 | 金璐芳 | Novel turning machine roller structure |
| 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 CN201910015309.0A patent/CN109538124B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202988113U (en) * | 2012-11-19 | 2013-06-12 | 金璐芳 | Novel turning machine roller structure |
| 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 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113404431A (en) * | 2021-06-21 | 2021-09-17 | 中石化石油机械股份有限公司 | Three-dimensional vibration hydraulic oscillator and processing method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN109538124B (en) | 2020-09-18 |
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