CN110273646A - A kind of novel drop mill friction reducer - Google Patents
A kind of novel drop mill friction reducer Download PDFInfo
- Publication number
- CN110273646A CN110273646A CN201910624308.6A CN201910624308A CN110273646A CN 110273646 A CN110273646 A CN 110273646A CN 201910624308 A CN201910624308 A CN 201910624308A CN 110273646 A CN110273646 A CN 110273646A
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- CN
- China
- Prior art keywords
- valve
- spring
- valve seat
- pogo barrel
- friction reducer
- 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.)
- Pending
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 22
- 239000012530 fluid Substances 0.000 claims abstract description 28
- 230000000694 effects Effects 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 239000012535 impurity Substances 0.000 claims description 2
- 230000007704 transition Effects 0.000 claims 4
- 239000007788 liquid Substances 0.000 claims 2
- 238000005553 drilling Methods 0.000 abstract description 14
- 238000007789 sealing Methods 0.000 abstract description 7
- 230000035939 shock Effects 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000000737 periodic effect Effects 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 230000003068 static effect Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000011435 rock Substances 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
- E21B7/04—Directional drilling
- E21B7/046—Directional drilling horizontal drilling
-
- 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
- E21B7/04—Directional drilling
- E21B7/06—Deflecting the direction of boreholes
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)
- Details Of Valves (AREA)
Abstract
The invention discloses a kind of novel drops to grind friction reducer, including lower contact 1, pogo barrel 2, spring 3, righting cylinder 4, valve seat 5, spring 6, valve 7, top connection 8, sealing ring 9, flap 10, the pogo barrel 2 is connect by screw thread with lower contact 1 and top connection 8, the spring 6 is elastically mounted between pogo barrel spring supporting face 21 and top connection 8 together with valve 7, the spring 3 is elastically mounted between pogo barrel 2 and flap 10 together with valve seat 5, design has runner 52 on 5 end face of valve seat, fluid area of passage can be caused to strongly reduce when valve 7 is contacted with valve seat 5, to make fluids within pipes accelerate to push valve 7 and valve seat 5 mobile to shaft bottom, design has gap 71 on valve 7 and 2 circumferential direction of pogo barrel, 7 pressure at two ends of valve can be promoted gradually to tend to balance, and in spring 6 Lower realization valve 7 is acted on to separate with valve seat 5, subsequent spring 3 pushes 5 accelerating impact valve 7 of valve seat, to the vibration of implementation tool, solves the problems such as existing tool needs tubing string to move axially, structure is simple, simultaneously because sealing position does not occur relatively after completing assembling, improve sealing performance, the service life for extending tool, improves drilling efficiency, shortens drilling time.
Description
Technical field
The invention belongs to oil and gas drilling project downhole tool technical fields, are related to one kind in high angle hole, water
Frictional resistance, transmitting bit pressure and then the novel drop mill for improving drilling speed and production efficiency can be effectively reduced in the exploitation of the complex structural wells such as horizontal well
Friction reducer.
Background technique
Flexible rigidity and high degree of automation that continuous oil pipe operation technology has due to itself, can the spies such as Operating Pressure
Property, it is developed rapidly in recent years, the technology has almost been related to all conventional drill rods, oil pipe operation at present.With big oblique
The gradually development that degree well, horizontal well are applied in drilling engineering, especially horizontal segment drilling depth continue to increase.Drilling tool and the borehole wall
Frictional resistance it is increasing, seriously affect rate of penetration, will cause sometimes drilling pipe bending even lock.To solve the above problems, state
Inside and outside many companies have developed respective drop mill friction reducer in succession, for reducing the frictional resistance of drilling tool and the borehole wall, improve drilling well effect
Rate.
Drop mill friction reducer is mainly used in oil and gas well drilling engineering, for making drilling tool generate vibration in the axial direction,
Stiction is transformed into kinetic force of friction, the frictional resistance in drilling tool brill drilling process between the borehole wall is reduced, realizes the efficient of drill bit
Broken rock.Common drop mill friction reducer needs tubing string axial movement mostly at this stage and structure is complicated, and sealing element is easy to damage, uses
The problems such as service life is not long.
Summary of the invention
The object of the present invention is to provide a kind of novel drops to grind friction reducer, solves in the prior art that structure is complicated, sealing
The problems such as part is easy to damage and tubing string is needed to move axially.
The technical scheme adopted by the invention is that:
In operation process, fluid enters drop mill friction reducer out of top connection 8, then goes through in 7 runner of valve, on valve 7
Design has water conservancy diversion inclined-plane 72.As runner is gradually reduced, the fluid in channel forms thrust along flow direction to valve 7, is overcoming
It pushes valve 7 mobile to valve seat 5 after the elastic force of spring 6, will further reduce flow area after valve 7 and valve 5 contact,
This will lead to be formed in chamber 100 forms high-pressure fluid suddenly, and high-pressure fluid will accelerate to push valve 7 and valve seat 5 to fluid side
To continuing to move to, when valve 7 is mobile to flow direction can continuous compressed spring 6, while the partial high pressure fluid in chamber 100 is along valve
Gap is flowed into chamber 200 between 7 and pogo barrel 2, and the mobile trend of final valve 7 can fade away, and in the work of spring 6
With lower rebound, realize that valve 7 is separated with valve seat 5.After valve 7 is separated with valve seat 5, high-pressure fluid flows into lower end work along valve seat end face 52
Tool, valve seat 5 realize rebound, and accelerating impact valve 7 under the action of spring 3, and effect of impact is hit valve seat end face 52 and valve
It hits on face 76, shock is finally transmitted to top connection 8 and top by the face 81 that is knocked that striking face 74 hits top connection again by valve 7
In tubing string, static friction is changed into dynamic friction by final realize.After primary shock is completed, in spring 3, spring 6 and Fluid pressure
Under the action of valve 7 be knocked face 76 and 5 end face 52 of valve seat and will be bonded again, so as to cause high-pressure spray is formed again in chamber 100
The reason of body, this is also structure drop mill friction reducer periodic vibration.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of novel drop mill friction reducer；
In figure, 1. lower contacts, 2. pogo barrels, 3. springs, 4. righting cylinders, 5. valve seats, 6 springs, 7. valves, 8. top connections, 9. is close
Seal, 10. flaps.
Fig. 2 is valve seat construction schematic diagram；
In figure, 51. fluid channels, 52. valve seat end faces, 53. valve seat supporting ribs, the spare shock inclined-plane of 54. valve seats.
Fig. 3 is knockout process schematic diagram；
In figure, the spring supporting face of 21. pogo barrels, 22. pogo barrels are knocked inclined-plane, 52. valve seat end faces, 54. valve seats
Spare shock inclined-plane, the riffler of 71. valves, the water conservancy diversion inclined-plane of 72. valves, the spring supporting face of 73. valves, the striking face of 74. valves,
75. the stroke limit step of valve, 76. valves are knocked face, and 81. top connections are knocked face.
Specific embodiment
The following describes the present invention in detail with reference to the accompanying drawings and specific embodiments.
Referring to Fig.1, structure of the invention is that product is by lower contact 1, pogo barrel 2, spring 3, righting cylinder 4, valve seat 5, bullet
Spring 6, valve 7, top connection 8, sealing ring 9, the equal components composition of flap 10.
Lower contact 1 is connected as one by the realization of pogo barrel 2 with top connection 8, and type of attachment is not limited to be threadedly coupled
Form, while design has sealing element 9 in its coupling part, seal form is not limited to O-ring seal structure.Valve 7 passes through spring 6
It is elastically mounted between top connection 8 and pogo barrel 2.Valve seat 5 by spring 3 be elastically mounted to lower contact 1 in pogo barrel 2 it
Between, while flap 10 can be installed in 3 lower end of spring as needed, play the role of filtering large granular impurity, protects lower tool.?
Design has righting cylinder 4 between spring 3 and pogo barrel 2, plays righting spring.It can be adjusted and whether be connect by under according to processing technology
First 1 is designed as integral type with righting cylinder 4.
Referring to Fig. 2, design has fluid channel 51 on valve seat 5, and valve seat end face 52(is designed on valve seat end face flow control
Hole), valve seat supporting rib 53(is designed as no less than two chip architectures, increases area of passage as far as possible while supporting valve seat), valve
The structures such as the spare striking face 54 of seat.
Referring to Fig. 3, design has spring mounting surface 21 and is knocked inclined-plane 22 on pogo barrel 2, and design has gap on valve 7
71, the water conservancy diversion inclined-plane 72 of valve, the spring supporting face 73 of valve, the striking face 74 of valve, the stroke limit step 75 of valve, valve is knocked
Face 76, design is knocked face 81 in top connection 8.
The working principle of the invention is,
In operation process, fluid enters drop mill friction reducer out of top connection 8, then goes through in 7 runner of valve, on valve 7
Design has water conservancy diversion inclined-plane 72.As runner is gradually reduced, the fluid in channel forms thrust along flow direction to valve 7, is overcoming
It pushes valve 7 mobile to valve seat 5 after the elastic force of spring 6, will further reduce flow area after valve 7 and valve 5 contact,
This will lead to be formed in chamber 100 forms high-pressure fluid suddenly, and high-pressure fluid will accelerate to push valve 7 and valve seat 5 to fluid side
To continuing to move to, valve 7 to flow direction it is mobile when can continuous compressed spring 6, while the partial high pressure fluid edge in chamber 100
Gap is flowed into chamber 200 between valve 7 and pogo barrel 2, and the mobile trend of final valve 7 can fade away, and in spring 6
The lower rebound of effect, realizes that valve 7 is separated with valve seat 5.After valve 7 is separated with valve seat 5, high-pressure fluid flows into lower end work along valve seat end face 52
Tool, valve seat 5 realize rebound, and accelerating impact valve 7 under the action of spring 3, and effect of impact is hit valve seat end face 52 and valve
It hits on face 76, shock is finally transmitted to top connection 8 and top by the face 81 that is knocked that striking face 74 hits top connection again by valve 7
In tubing string, static friction is changed into dynamic friction by final realize.After primary shock is completed, in spring 3, spring 6 and Fluid pressure
Under the action of valve 7 be knocked face 76 and 5 end face 52 of valve seat and will be bonded again, so as to cause high-pressure spray is formed again in chamber 100
The reason of body, this is also structure drop mill friction reducer periodic vibration.
Although hitting the spare shock inclined-plane for being knocked face 22 and valve seat that can act on pogo barrel in some cases
Between 54, but preferred effect of impact position being knocked between face 76 in valve seat end face 52 and valve of mill friction reducer is dropped.
The stroke control process of valve 7 connects when valve 7 to uphole end is moved to valve jacket face 74 and is knocked face 81 with top connection 8
When touching, valve 7 reaches pan position in maximum.When valve 7 is moved to fluid flow direction the stroke limit step 75 and spring pocket of valve
When the spring mounting surface 21 of pipe contacts, valve 7 reaches pan position under maximum.
Claims (8)
1. a kind of novel drop grinds friction reducer, it is characterised in that: including pogo barrel 2, connect by screw thread with pogo barrel 2
Lower contact 1, the top connection 8 that is connect by screw thread with pogo barrel 2 are installed on spring supporting face 21 and the valve of pogo barrel 2
Spring 6 between spring supporting face 73, the valve 7 being elastically mounted between spring 6 and top connection 8, is elastically mounted in lower contact 1
Spring 3 and the valve seat 5 that is elastically mounted between spring 3 and pogo barrel 2, prevent the righting cylinder of 3 transition bending deformation of spring
4, only axial movement can be achieved the promotion of Fluid pressure is i.e. lower in the valve 7 and valve seat 5, passes through being total to for fluid thrust and spring 6
Same-action realizes that valve 7 and valve seat 5 are contacting and separating, the vibration of final implementation tool.
2. a kind of novel drop according to claim 1 grinds friction reducer, it is characterised in that: design has drainage in 7 runner of valve
Inclined-plane 72 can form initial thrust when fluid is by valve 7, push valve 7 mobile to valve seat 5.
3. a kind of novel drop according to claim 1 grinds friction reducer, it is characterised in that: design has the row of valve on valve 7
Journey limited step 75 can limit valve 7 when fluid forces valve 7 is mobile, prevent 7 transition compressed spring 6 of valve from causing bullet
The failure of spring 6 destroys, and improves tool reliability and extends tool life.
4. a kind of novel drop according to claim 1 grinds friction reducer, it is characterised in that: on valve 7 and 2 circumferential direction of pogo barrel
Design has gap 71, and the highly pressurised liquid in chamber 100 can be made to flow into chamber 200, tend to the pressure at 7 both ends of valve gradually
Balance.
5. a kind of novel drop according to claim 1 grinds friction reducer, it is characterised in that: in the spring branch of pogo barrel 2
Design has spring 6 between support face 21 and the spring supporting face 73 of valve, energy is constantly put aside when valve 7 is mobile, in 7 pressure at two ends of valve
Valve 7 is set to set back when tending to balance, it should be noted that the structure is not limited to form of springs, as long as meeting the right
It is required that the structure type of principle can all meet, such as compressed gas or liquid.
6. a kind of novel drop according to claim 1 grinds friction reducer, it is characterised in that: designed on the end face of valve seat 5
There is runner 52, fluid area of passage can be caused to strongly reduce when valve 7 is contacted with valve seat 5, while design has quantity on valve seat 5
No less than two supporting ribs 53 can meet when valve 7 is separated with valve seat 5, as far as possible the area of passage of larger fluid.
7. a kind of novel drop according to claim 1 grinds friction reducer, it is characterised in that: design has anti-on the outside of spring 3
The only righting cylinder 4 of 3 transition bending deformation of spring, effectively prevent 3 transition deformation of spring to improve the reliability of tool, by righting cylinder
4 are designed as the structure of integral type also within the protection scope of present claims with lower contact 1.
8. a kind of novel drop according to claim 1 grinds friction reducer, it is characterised in that: between spring 3 and lower contact 1
Design has flap 10, can be filtered to the fluid in channel, prevent major diameter impurity from entering in lower tool, play under protection
The effect of portion's tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910624308.6A CN110273646A (en) | 2019-07-11 | 2019-07-11 | A kind of novel drop mill friction reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910624308.6A CN110273646A (en) | 2019-07-11 | 2019-07-11 | A kind of novel drop mill friction reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110273646A true CN110273646A (en) | 2019-09-24 |
Family
ID=67964205
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910624308.6A Pending CN110273646A (en) | 2019-07-11 | 2019-07-11 | A kind of novel drop mill friction reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110273646A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624109A (en) * | 2023-07-25 | 2023-08-22 | 成都阿斯贝瑞科技有限公司 | Multi-pitching variable-diameter hydraulic centralizer |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2121374T3 (en) * | 1994-04-21 | 1998-11-16 | Univ Aberdeen | DRILLING DEVICE. |
| CN102747974A (en) * | 2012-06-15 | 2012-10-24 | 中国石油化工股份有限公司 | Well drilling vibrator of horizontal well |
| CN103835654A (en) * | 2014-03-03 | 2014-06-04 | 西南石油大学 | Friction-reduction and amplitude-increasing downhole tool |
| CN105649546A (en) * | 2016-01-07 | 2016-06-08 | 西南石油大学 | Downhole tool realizing stable impact effect through pressure pulses |
| CN105888554A (en) * | 2016-05-23 | 2016-08-24 | 宝鸡市远深石油设备新技术有限公司 | Hydraulic push-return impact oscillator |
| CN106703699A (en) * | 2016-12-21 | 2017-05-24 | 西南石油大学 | Vibrator capable of providing secondary impact through pressure pulse |
| CN108798521A (en) * | 2018-08-07 | 2018-11-13 | 长江大学 | A kind of reciprocating axial impact pressue device |
-
2019
- 2019-07-11 CN CN201910624308.6A patent/CN110273646A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ES2121374T3 (en) * | 1994-04-21 | 1998-11-16 | Univ Aberdeen | DRILLING DEVICE. |
| CN102747974A (en) * | 2012-06-15 | 2012-10-24 | 中国石油化工股份有限公司 | Well drilling vibrator of horizontal well |
| CN103835654A (en) * | 2014-03-03 | 2014-06-04 | 西南石油大学 | Friction-reduction and amplitude-increasing downhole tool |
| CN105649546A (en) * | 2016-01-07 | 2016-06-08 | 西南石油大学 | Downhole tool realizing stable impact effect through pressure pulses |
| CN105888554A (en) * | 2016-05-23 | 2016-08-24 | 宝鸡市远深石油设备新技术有限公司 | Hydraulic push-return impact oscillator |
| CN106703699A (en) * | 2016-12-21 | 2017-05-24 | 西南石油大学 | Vibrator capable of providing secondary impact through pressure pulse |
| CN108798521A (en) * | 2018-08-07 | 2018-11-13 | 长江大学 | A kind of reciprocating axial impact pressue device |
Non-Patent Citations (1)
| Title |
|---|
| 孙福华等: "油气田钻井用水力减阻振荡器的研究与设计", 《农业装备技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116624109A (en) * | 2023-07-25 | 2023-08-22 | 成都阿斯贝瑞科技有限公司 | Multi-pitching variable-diameter hydraulic centralizer |
| CN116624109B (en) * | 2023-07-25 | 2023-09-19 | 成都阿斯贝瑞科技有限公司 | Multi-pitching variable-diameter hydraulic centralizer |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190924 |
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| RJ01 | Rejection of invention patent application after publication |