CN108756772A - A kind of flexible commutation liquid-gas type drill string two-way shock absorber - Google Patents
A kind of flexible commutation liquid-gas type drill string two-way shock absorber Download PDFInfo
- Publication number
- CN108756772A CN108756772A CN201810851910.9A CN201810851910A CN108756772A CN 108756772 A CN108756772 A CN 108756772A CN 201810851910 A CN201810851910 A CN 201810851910A CN 108756772 A CN108756772 A CN 108756772A
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- China
- Prior art keywords
- liquid
- cylinder
- gas
- cable
- outer barrel
- 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.)
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- 239000006096 absorbing agent Substances 0.000 title claims abstract description 15
- 230000035939 shock Effects 0.000 title claims abstract description 15
- 239000007788 liquid Substances 0.000 claims abstract description 62
- 230000007704 transition Effects 0.000 claims abstract description 17
- 238000013016 damping Methods 0.000 claims abstract description 13
- 238000005553 drilling Methods 0.000 claims abstract description 12
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 7
- 239000000203 mixture Substances 0.000 claims abstract description 7
- 239000010959 steel Substances 0.000 claims abstract description 7
- 239000007789 gas Substances 0.000 claims description 36
- 239000012530 fluid Substances 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims 2
- 238000009434 installation Methods 0.000 claims 1
- 229910052757 nitrogen Inorganic materials 0.000 claims 1
- 229920002545 silicone oil Polymers 0.000 claims 1
- 230000009977 dual effect Effects 0.000 abstract 1
- 239000003921 oil Substances 0.000 description 4
- 230000001629 suppression Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 239000003345 natural gas Substances 0.000 description 1
- 238000004080 punching 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
- E21B17/00—Drilling rods or pipes; Flexible drill strings; Kellies; Drill collars; Sucker rods; Cables; Casings; Tubings
- E21B17/02—Couplings; joints
- E21B17/04—Couplings; joints between rod or the like and bit or between rod and rod or the like
- E21B17/07—Telescoping joints for varying drill string lengths; Shock absorbers
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Mechanical Engineering (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 present invention provides a kind of flexible commutation liquid-gas type drill string two-way shock absorbers, mainly by top connection（1）, cable flexibility changement, liquid gas linkage damper mechanism, lower contact（16）Composition, idler axle（4）Pass through steel wire cable（6）And transition joint（8）It is connected, liquid cylinder inner cylinder（11）With liquid cylinder outer barrel（9）Upper end same idler axle respectively（4）And transition joint（8）It is connected by screw thread, liquid cylinder inner cylinder（11）Can and connector for joint（15）Relative to sliding and rotation.When work, the axial vibration generated in lower drilling string is absorbed by liquid cylinder damper mechanism；Circumferential twisting vibration is converted into axial vibration by cable changement, then is absorbed by damper mechanism, realizes circumferential vibration damping.The present invention is had two-way vibration damping and dual vibration reduction function, is improved global reliability and service life, and have the advantages that flexible, impact is small, stability is high and prosthetic is strong using cable flexibility changement and liquid gas linkage damper mechanism.
Description
Technical field
The present invention relates to oil drilling, the technical fields such as geological prospecting, and in particular to a kind of flexible commutation liquid-gas type drill string
Two-way shock absorber.
Background technology
In recent years, the further utilization with country to oil, natural gas use the longevity for how to extend drilling tool
Life, reducing drilling failure, more stringent requirements are proposed.In drilling process, the intermittent movement meeting between the not gentle drill teeth in shaft bottom
Cause the axial vibration of drill string, while generating friction between lower drilling string and the borehole wall, drill string will produce stick slip vibration phenomenon, above-mentioned
Two kinds of drillstring vibrations can all generate alternate stress in drill string, when generated driving frequency is identical as DRILL-STRING SYSTEM intrinsic frequency
Or when at multiple, drill string can be caused to resonate, drill string is made to be destroyed, eventually led to drilling tool fracture, lead to drilling failure.
It is had the following problems currently, commonly using drill string two-way shock absorber in drilling process：Changement commutates frequently with screw thread
Mode, the mechanism is vulnerable, and global reliability is poor；Liquid-springing mode is complicated, and compression travel is short, and axial damping is caused to be imitated
Fruit is poor；Mechanical vibration reducing mode bulk life time is short, and reuse rate is low, and rehabilitation cost is high.It is a kind of two-way it is therefore desirable to invent
Effectiveness in vibration suppression is more preferable, the novel drill string two-way shock absorber that the service life is longer.
Invention content
It is an object of the invention to solve the fault of construction of existing drill string two-way shock absorber, effectiveness in vibration suppression is promoted, extension makes
With the service life, a kind of flexible commutation liquid-gas type drill string two-way shock absorber is provided.
To achieve the above object, the present invention uses following technical scheme：A kind of flexible commutation two-way vibration damping of liquid-gas type drill string
Device is mainly made of top connection, cable flexibility changement, liquid gas linkage damper mechanism, lower contact；It is characterized in that：The rope
Cable flexibility changement by end face mud retaining ring, end face O-ring seal, idler axle, cable connector, steel wire cable, cable outer barrel,
Transition joint forms, and idler axle upper end is connected by screw thread with top connection, and steel wire cable is by cable connector by idler axle
It is connected with transition joint, cable, which rises, transmits torque and connection function；Cable outer barrel is connected by screw thread with transition joint, in
Between mandrel upper end be equipped with annular groove, sealing ring and mud retaining ring be installed, cable outer barrel and idler axle opposite sliding and can rotate；
Liquid gas linkage absorbing mechanism is by liquid cylinder outer barrel, cylinder piston, gas-liquid batcher, liquid cylinder piston, U-shaped exterior seal ring, U-shaped
Inner seal ring, liquid cylinder inner cylinder, gas nozzle, connector for joint composition, liquid cylinder inner cylinder upper end passes through screw thread and idler axle lower end
It is connected, liquid cylinder outer barrel upper end is connected by screw thread with transition joint lower end；Cylinder piston is installed on liquid cylinder inner cylinder and liquid gas
In cavity between cylinder outer barrel and it is adjacent to transition joint, cylinder piston Internal and external cycle is equipped with seal groove, and one is installed close to cylinder side
The U-shaped exterior seal ring of group, U-shaped inner seal ring install one group of O-shaped exterior seal ring I, O-shaped inner seal ring I close to transition joint side；
In cavity of the gas-liquid batcher between liquid cylinder inner cylinder and liquid cylinder outer barrel and close to the boss on liquid cylinder inner cylinder, live
Plug end Internal and external cycle has seal groove, two couples of O-shaped inner seal ring II and O-shaped exterior seal ring II is equipped with, for separating liquids and gases；
Liquid cylinder outer barrel lower end is connected by screw thread with connector for joint, liquid cylinder piston be installed on liquid cylinder inner cylinder and liquid cylinder inner cylinder it
Between cavity in and be adjacent to connector for joint, liquid cylinder piston Internal and external cycle is equipped with seal groove, close to fluid cylinder side install one group it is U-shaped outer
Sealing ring, U-shaped inner seal ring install two groups of O-shaped exterior seal ring I, O-shaped inner seal ring I, liquid cylinder close to connector for joint side
It can be relative to sliding and rotation between inner cylinder and liquid cylinder piston；Connector for joint is connected by screw thread with lower contact.
Further, there are 12 uniformly distributed through-holes on the boss on the liquid cylinder inner cylinder, be used for fluid damping vibration damping.
Further, the idler axle and transition joint are equipped with 12 threaded holes, are connected for steel wire rope cable joint.
Further, the oil nozzle is mounted on liquid cylinder outer barrel, for adding hydraulic oil.
Further, the gas nozzle is mounted on liquid cylinder outer barrel, it is by gas nozzle seat, gas nozzle pipe sleeve, sealing-plug, return bullet
Spring, telescopic rod I, telescopic rod II, rear cover, sealed tube composition, for being filled with high pressure gas.
Compared with the prior art, advantage is the present invention：(1) damper by cable changement by circumferential load
Fluctuation is transformed into generated relative displacement bigger on axial direction, and circumferential effectiveness in vibration suppression is more preferable, and the service life is longer；(2)
Liquid cylinder damper mechanism has fluid damping vibration damping and elasticity of gases vibration damping double damping effect；(3) damper damper mechanism exists
While with gas flexible anti-vibration, the liquid in fluid cylinder can play cushioning effect in air rebound and avoid secondary punching again
It hits, has the characteristics that flexible, impact is small, stability is good；(4) cylinder interior gas pressure can be adjusted by gas nozzle inflation/deflation, can
Vibration damping under different operating modes is adapted to, and may be reused, cost is reduced；(5) the elastic potential conversion that gas is sprung back after drill bit unblocking
For circumferential acceleration and axial impact, plays acceleration and abolish inhibition, improve drilling efficiency.
Description of the drawings
Fig. 1 is cross-section structure view of the present invention；
Fig. 2 is the cross-section structure view of former and later two states of damper vibration damping；
Fig. 3 is damper three-dimensional display figure；
Fig. 4 is that damper cable changement shrinks front and back Three Dimensional Contrast figure；
Fig. 5 is Section A-A figure in Fig. 1；
Fig. 6 is section B-B figure in Fig. 1；
Fig. 7 is that steel cable termina connects partial enlarged view at I in Fig. 1；
Fig. 8 is gas nozzle structure schematic diagram in Fig. 1.
In figure：1. top connection, 2. end face mud retaining rings, 3. end face O-ring seals, 4. idler axles, 5. cable connectors, 6. is fine
Dimension independent wire strand core wire rope, 7. cable outer barrels, 8. intermediate connectors, 9. liquid cylinder outer barrels, 10. cylinder pistons, 11. liquid cylinder inner cylinders,
12.O type exterior seal ring II, 13. liquid cylinder pistons, 14.O type exterior seal ring I, 15. connector for joint, 16. lower contacts, in 17.O types
Sealing ring I, 18.U type inner seal ring, 19.U type exterior seal rings, 20. oil nozzles, 21. gas-liquid batchers, 22.O type inner seal rings
II, 23. gas nozzles.
Claims (7)
1. a kind of flexible commutation liquid-gas type drill string two-way shock absorber, mainly by top connection（1）, cable flexibility changement, liquid gas
Link damper mechanism, lower contact（16）Composition；It is characterized in that：The cable flexibility changement is by end face mud retaining ring（2）,
End face O-ring seal（3）, idler axle（4）, cable connector（5）, steel wire cable（6）, cable outer barrel（7）, transition joint（8）
Composition, idler axle（4）Upper end passes through screw thread and top connection（1）It is connected, steel wire cable（6）Pass through cable connector（5）It will be intermediate
Mandrel（4）And transition joint（8）It is connected, cable outer barrel（7）Pass through screw thread and transition joint（8）Connection, cable outer barrel and centre
The movable cavity structure of cable is formed between mandrel；Annular groove is arranged in idler axle top, is equipped with end face mud retaining ring（2）The end and
Face O-ring seal（3）, cable outer barrel and idler axle can be relative to slidings and rotation；The liquid gas links damper mechanism by liquid gas
Cylinder outer barrel（9）, cylinder piston（10）, liquid cylinder piston（13）, U-shaped inner seal ring（18）, U-shaped exterior seal ring（19）, in liquid cylinder
Cylinder（11）, oil nozzle（20）, gas-liquid batcher（21）, gas nozzle（23）, O-shaped exterior seal ring I（14）, O-shaped inner seal ring I（17）, connect
Head connector（15）Composition, liquid cylinder outer barrel（9）Upper end passes through screw thread and transition joint（8）Lower end is connected, liquid cylinder inner cylinder
（11）Upper end passes through screw thread and idler axle（4）Lower end is connected；Cylinder piston（10）It is installed on liquid cylinder inner cylinder（11）With liquid gas
Cylinder outer barrel（9）Between cavity in and be adjacent to transition joint（8）, cylinder piston（10）Internal and external cycle is equipped with seal groove, close to cylinder
Side is installed by one group of U-shaped exterior seal ring（19）, U-shaped inner seal ring（18）, one group of O-shaped external seal is installed close to transition joint side
Circle I（14）, O-shaped inner seal ring I（17）；Gas-liquid batcher（21）Also position and liquid cylinder inner cylinder（11）With liquid cylinder outer barrel（9）It
Between cavity in, piston end is close to liquid cylinder inner cylinder（11）On boss, piston end be equipped with two pairs of O-shaped inner seal rings II（22）
With O-shaped exterior seal ring II（12）；Liquid cylinder outer barrel（9）Upper end passes through screw thread and transition joint（8）Lower end is connected, liquid cylinder outer barrel
（9）Lower end passes through screw thread and connector for joint（15）It is connected；Liquid cylinder piston（13）It is installed on liquid cylinder inner cylinder（11）And liquid cylinder
Inner cylinder（9）Between cavity in and be adjacent to connector for joint（15）, liquid cylinder piston（13）Internal and external cycle is equipped with seal groove, close to fluid cylinder
Side is installed by one group of U-shaped exterior seal ring（19）, U-shaped inner seal ring（18）, close to connector for joint（15）Two groups of side installation is O-shaped
Exterior seal ring I（14）, O-shaped inner seal ring I（17）, liquid cylinder inner cylinder（11）Can and liquid cylinder piston（13）It is opposite to slide and turn
It is dynamic；Connector for joint（15）With lower contact（16）It is connected by screw thread.
2. a kind of flexible commutation liquid-gas type drill string two-way shock absorber according to claim 1, it is characterised in that：Described is upper
Lower contact is disposed as drilling rod modular connection, so that damper is connect with other drilling tools.
3. a kind of flexible commutation liquid-gas type drill string two-way shock absorber according to claim 1, it is characterised in that：In described
Between mandrel（4）And transition joint（8）It is equipped with 12 threaded holes.
4. a kind of flexible commutation liquid-gas type drill string two-way shock absorber according to claim 1, it is characterised in that：The liquid
Cylinder inner cylinder（11）There is a boss, there are 12 damping holes on boss.
5. a kind of flexible commutation liquid-gas type drill string two-way shock absorber according to claim 1, it is characterised in that：It is filled in fluid cylinder
Expire silicone oil, the nitrogen of certain initial pressure is filled in cylinder.
6. a kind of flexible commutation liquid-gas type drill string two-way shock absorber according to claim 1, it is characterised in that：The oil
Mouth（20）It is installed on liquid cylinder outer barrel（9）On.
7. a kind of flexible commutation liquid-gas type drill string two-way shock absorber according to claim 1, it is characterised in that：The gas
Mouth（23）It is installed on liquid cylinder outer barrel（9）；The gas nozzle（23）By gas nozzle seat（2301）, gas nozzle pipe sleeve（2302）, sealing
Plug（2303）, return spring（2304）, telescopic rod I（2305）, telescopic rod II（2306）, rear cover（2307）, sealed tube
（2308）Composition.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851910.9A CN108756772B (en) | 2018-07-30 | 2018-07-30 | Flexible reversing liquid-gas type drill string bidirectional shock absorber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810851910.9A CN108756772B (en) | 2018-07-30 | 2018-07-30 | Flexible reversing liquid-gas type drill string bidirectional shock absorber |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108756772A true CN108756772A (en) | 2018-11-06 |
| CN108756772B CN108756772B (en) | 2023-08-01 |
Family
ID=63971826
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810851910.9A Active CN108756772B (en) | 2018-07-30 | 2018-07-30 | Flexible reversing liquid-gas type drill string bidirectional shock absorber |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108756772B (en) |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4162619A (en) * | 1978-02-08 | 1979-07-31 | Maurer Engineering, Inc. | Drill string shock sub |
| US4207756A (en) * | 1977-10-21 | 1980-06-17 | Well Control, Inc. | Tension shock absorber device |
| US4257245A (en) * | 1979-09-13 | 1981-03-24 | Well Control, Inc. | Compression shock absorber device |
| EP0033405A1 (en) * | 1980-02-01 | 1981-08-12 | Well Control, Inc. | Tension shock absorber device |
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| Publication number | Publication date |
|---|---|
| CN108756772B (en) | 2023-08-01 |
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