CN106761457B - A kind of full hydraulic adjustable rigidity bidirectional flexible short circuit - Google Patents
A kind of full hydraulic adjustable rigidity bidirectional flexible short circuit Download PDFInfo
- Publication number
- CN106761457B CN106761457B CN201611261790.4A CN201611261790A CN106761457B CN 106761457 B CN106761457 B CN 106761457B CN 201611261790 A CN201611261790 A CN 201611261790A CN 106761457 B CN106761457 B CN 106761457B
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- China
- Prior art keywords
- adjusting set
- cylinder body
- dummy piston
- connector
- adjusting
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- 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.)
- Expired - Fee Related
Links
- 230000002457 bidirectional effect Effects 0.000 title claims abstract description 14
- 238000005406 washing Methods 0.000 claims abstract description 20
- 238000005553 drilling Methods 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 3
- 238000004146 energy storage Methods 0.000 abstract description 13
- 238000004519 manufacturing process Methods 0.000 abstract description 8
- 230000006835 compression Effects 0.000 abstract description 7
- 238000007906 compression Methods 0.000 abstract description 7
- 229920002545 silicone oil Polymers 0.000 description 11
- 230000000694 effects Effects 0.000 description 4
- 238000013016 damping Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000006386 neutralization reaction Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000007789 sealing Methods 0.000 description 1
- 230000035939 shock Effects 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
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 invention discloses a kind of full hydraulic adjustable rigidity bidirectional flexible short circuits, include splined mandrel (1), splines shell (4), washing pipe (5), upper cylinder body (6), upper dummy piston (7), connector (10), lower dummy piston (13), lower cylinder body (14), fixed piston (16) and lower contact (17) successively from top to bottom.Patent of the present invention is a kind of underground flexibility short circuit of completely new type, has the characteristics that bidirectional flexible connection, all has another high-voltage energy storage oil pocket in drill string Tensile and compression, can realize flexible connection and compressed energy-storage；The present invention has the characteristics that adjustable rigidity, when needing to adjust upper-lower seal oil pocket volume respectively after the manufacture of flexible short circuit, it takes out respectively and adjusts pinning, by the flat recess that is arranged in the axial direction with the outer circle for dialling stick and being inserted into upper adjusting set and lower adjusting set and circumferentially positive and negative rotation achievees the purpose that the volume for adjusting lower seal oil chamber, disclosure satisfy that the requirement of different production scenes.
Description
Technical field
The invention belongs to drilling technology field, more particularly to a kind of full hydraulic adjustable rigidity bidirectional flexible short circuit.
Background technology
It is frequently necessary to realize flexible connection between drill string during oil drilling, geological drilling.Such as damper suspends
Device, to separate axial vibration, oscillation crosswise caused by the drill bit in shaft bottom, drilling well or the workover tool, reach absorption or
Slow down drill string axial vibration or shock loading, avoids generating drill string and drilling platforms and destroy and influence, and extension can be played
The effect of bit life.But such tool is generally connected at nearly drill bit or the drill string point of neutralization is hereinafter, only just when drill string is pressurized
It works, is then rigid connection when drill string tension, use scope is extremely restricted, and after general such product export just
Degree is uncontrollable, therefore use scope receives very big limitation again.The principle of existing hydraulic damper is profit in the market
The energy conversion process that compressed energy-storage, rebound release energy, this original are realized with a kind of compressibility of special elastic body silicone oil
Reason has obtained popularity utilization, is ripe, but due to structure, can only realize just has when drill string is compressed axially
It is flexibly connected, the function of compressed energy-storage.
Invention content
It is an object of the invention to overcome the deficiencies of the prior art and provide one kind having the characteristics that bidirectional flexible connection,
All there is another high-voltage energy storage oil pocket when drill string Tensile and compression；And has the characteristics that adjustable rigidity, disclosure satisfy that
The full hydraulic adjustable rigidity bidirectional flexible short circuit of the requirement of different production scenes.
The purpose of the present invention is achieved through the following technical solutions：A kind of full hydraulic adjustable rigidity bidirectional flexible is short
It connects, includes splined mandrel, splines shell, washing pipe, upper cylinder body, upper dummy piston, connector, the work of lower balance successively from top to bottom
Plug, lower cylinder body, fixed piston and lower contact；
The top of splined mandrel is connected with top drilling tool, and the bottom of splined mandrel is stretched into splines shell and in splines shell
In slide up and down, stop collar, which is threadably secured, is connected to splined mandrel top；The bottom of splines shell is fixedly connected with washing pipe；
Upper cylinder body and lower cylinder body are separately positioned on the outside of washing pipe, and washing pipe two sections are respectively provided with a groove, upper groove
Lower section is equipped with upper dummy piston, and upper seal oil chamber is formed between upper groove, upper cylinder body and upper dummy piston；It is equipped with above lower groove
Lower dummy piston, lower groove lower section are equipped with fixed piston, are formed between lower groove, lower cylinder body, lower dummy piston and fixed piston
Lower seal oil chamber；
Connector upper and lower ends external screw thread is separately connected upper cylinder body and lower cylinder body, and separates upper seal oil chamber and lower Seal Oil
Chamber is separately installed with adjusting set and lower adjusting set on connector upper and lower ends endoporus internal thread, is equipped at the top of upper adjusting set
Upper dummy piston, lower adjusting set bottom are equipped with lower dummy piston；The top of upper adjusting set and the lower part of lower adjusting set lead to respectively
It crosses and is threaded on connector, the volume size of upper seal oil chamber and lower seal oil chamber is realized by the screw-in and back-out of screw thread
It adjusts；It is locked respectively by the adjusting pinning on connector on the lower part of upper adjusting set and the top of lower adjusting set
On connector, adjusting set and lower adjusting is avoided to be sleeved on rotation in connector；
Fixed piston is threadably secured the bottom for being connected to washing pipe, and the bottom of lower cylinder body is fixedly connected with lower contact, under connect
Head is connected with lower drilling tool.
Further, the outer circle of upper adjusting set and lower adjusting set is provided with 20~30 flat recesses in the axial direction, uses respectively
Upper adjusting set and lower adjusting set are adjusted in along the circumferential direction stirring rotation, after the completion of adjusting, is packed into and adjusts pinning, rise and be locked
Effect.
Further, the intermediate position of the washing pipe is equipped with 4 mud balance holes.
The beneficial effects of the invention are as follows：
1, patent of the present invention is a kind of underground flexibility short circuit of completely new type, has the characteristics that bidirectional flexible connection, in drill string
All there is another high-voltage energy storage oil pocket when Tensile and compression, can realize flexible connection and compressed energy-storage；
2, the present invention has the characteristics that adjustable rigidity, needs to adjust upper-lower seal oil pocket volume respectively after the manufacture of flexible short circuit
When, take out adjust pinning respectively, by be arranged in the axial direction with the outer circle for dialling stick and being inserted into upper adjusting set and lower adjusting set one
Word slot and circumferentially positive and negative rotation achieve the purpose that the volume for adjusting upper-lower seal oil pocket, disclosure satisfy that making for different production scenes
With requiring.
Description of the drawings
Fig. 1 is the flexible short-circuit structure schematic diagram of the present invention；
Fig. 2 is the splines shell cross-sectional view of the present invention；
Fig. 3 is the adjusting pinning cross-sectional view of the present invention；
Reference sign：1- splined mandrels, 2- stop collars, 3- sealing rings, 4- splines shells, 5- washing pipes, 6- upper cylinder bodies,
The upper dummy pistons of 7-, the upper seal oil chambers of 8-, the upper adjusting sets of 9-, 10- connectors, 11- adjust pinning, under 12- under adjusting set, 13-
Seal oil chamber, 16-- fixed pistons, 17- lower contacts under dummy piston, 14- lower cylinder bodies, 15-.
Specific implementation mode
The technical solution further illustrated the present invention below in conjunction with the accompanying drawings.
As shown in Figure 1, a kind of full hydraulic adjustable rigidity bidirectional flexible short circuit, include successively from top to bottom splined mandrel 1,
Splines shell 4, washing pipe 5, upper cylinder body 6, upper dummy piston 7, connector 10, lower dummy piston 13, lower cylinder body 14, fixed piston 16
With lower contact 17；
The top of splined mandrel 1 is connected with top drilling tool, and the bottom of splined mandrel 1 is stretched into splines shell 4 and in spline
It is slided up and down in shell 4, as shown in Fig. 2, stop collar 2, which is threadably secured, is connected to 1 top of splined mandrel；Splines shell 2
Bottom is fixedly connected with washing pipe 5；
Upper cylinder body 6 and lower cylinder body 14 are separately positioned on the outside of washing pipe 5, and 5 two sections of washing pipe are respectively provided with a groove, on
It is equipped with upper dummy piston 7 below groove, forms upper seal oil chamber 8 between upper groove, upper cylinder body 6 and upper dummy piston 7；Lower groove
Top is equipped with lower dummy piston 13, and fixed piston 16, lower groove, lower cylinder body 14,13 and of lower dummy piston are equipped with below lower groove
Lower seal oil chamber 15 is formed between fixed piston 16；
10 upper and lower ends external screw thread of connector is separately connected upper cylinder body 6 and lower cylinder body 14, and separates upper seal oil chamber 8 under
Seal oil chamber 15 is separately installed with adjusting set 9 and lower adjusting set 12, upper adjusting on 10 upper and lower ends endoporus internal thread of connector
9 top of set is equipped with dummy piston 7, and lower 12 bottom of adjusting set is equipped with lower dummy piston 13；The top of upper adjusting set 9 is under
The lower part of adjusting set 12 is threadedly attached in respectively on connector 10, and upper seal oil chamber is realized by the screw-in and back-out of screw thread
8 and lower seal oil chamber 15 volume size adjust；When drilling tool is by axial compressive force, upper dummy piston 7 is displaced downwardly to connector
10 upper limit step, the silicone oil in upper seal oil chamber 8 are compressed or are discharged, and are started to work, this at present dummy piston 13 under
Silicone oil in seal oil chamber 15 moves up and down together, is uncompressed or discharges；Same principle, when drilling tool is by axial tension
It waits, the lower limit step of connector 10 is moved on lower dummy piston 13, the silicone oil in lower seal oil chamber 15 is compressed or discharged, opened
Beginning work, the silicone oil that upper dummy piston 7 is same as above in seal oil chamber 8 at this time move up and down, are uncompressed or discharge together；
Pass through the adjusting pinning on connector 10 respectively in the lower part of upper adjusting set 9 and the top of lower adjusting set 12
11 are locked on connector 10, avoid the rotation in connector 10 of adjusting set 9 and lower adjusting set 12；Adjust pinning 11
Structure is as shown in Figure 3.
Fixed piston 16 is threadably secured the bottom for being connected to washing pipe 5, and the bottom of lower cylinder body 14 is fixedly connected with lower contact
17, lower contact 17 is connected with lower drilling tool.
Further, the outer circle of the upper adjusting set 9 and lower adjusting set 12 is provided with 20~30 flat recesses in the axial direction,
It is fixed convenient for dialling stick adjusting and adjusting pinning, is respectively used to along the circumferential direction stir the upper adjusting set 9 of rotation adjusting and lower adjusting set
12, flexible short circuit manufacture after need to adjust upper-lower seal oil pocket volume respectively when, respectively take out adjust pinning 11, by with dial stick
It is inserted into flat recess and circumferentially positive and negative rotation achievees the purpose that the volume for adjusting upper-lower seal oil pocket, adjust to suitable position,
Upper and lower cavity oil is filled, corresponding adjusting pinning 11 is reinstalled, serves and be locked, adjust and complete.
Further, the intermediate position of the washing pipe 5 is equipped with 4 mud balance holes, to balance between upper-lower seal oil pocket
The volume change of cavity.
The present invention has the characteristics that bidirectional flexible connection, when drilling tool is by axial compressive force, silicone oil in upper seal oil chamber 8
Starting gradual energy storage, when reaching maximum compression stroke L1, energy storage terminates, and when axial compressive force is reduced, high pressure silicone oil releases energy,
Tool compresses impulse stroke becomes larger, and repeatedly, compression silicone oil converts between energy storage and release, realizes the purpose of vibration damping, i.e., in fact
The compressed flexible connection of existing drill string, due to the effect of lower dummy piston 13, volume of lower seal oil chamber 15 does not become during this
Change.Same principle, when drilling tool is by axial tension, silicone oil starts gradual energy storage in lower seal oil chamber 15, reaches maximum drawing
When stretching stroke L2, energy storage terminates, and when axial tension is reduced, high pressure silicone oil releases energy, and tool drawing work stroke becomes larger, such as
This compresses silicone oil and is converted between energy storage and release repeatedly, realizes the purpose of vibration damping, that is, realizes the stretching flexible connection of drill string, by
In the effect of upper dummy piston 7, volume of upper seal oil chamber 8 does not change during this.
The present invention also has the characteristics that adjustable rigidity, to meet the various requirement of production scene, works as visitor after tool manufacture
When family needs to adjust compression stiffness, adjusting set 9 in startup changes the volume size of upper oil cavitie, to realize compression stiffness
Adjusting；Same principle starts lower adjusting set 12, changes the volume size of lower oil cavitie when needing to adjust tensible rigidity,
The adjusting of tensible rigidity can be realized.
Those of ordinary skill in the art will understand that the embodiments described herein, which is to help reader, understands this hair
Bright principle, it should be understood that protection scope of the present invention is not limited to such specific embodiments and embodiments.This field
Those of ordinary skill can make according to the technical disclosures disclosed by the invention various does not depart from the other each of essence of the invention
The specific variations and combinations of kind, these variations and combinations are still within the scope of the present invention.
Claims (3)
1. a kind of full hydraulic adjustable rigidity bidirectional flexible short circuit, which is characterized in that include splined mandrel successively from top to bottom
(1), splines shell (4), washing pipe (5), upper cylinder body (6), upper dummy piston (7), connector (10), lower dummy piston (13), under
Cylinder body (14), fixed piston (16) and lower contact (17)；
The top of splined mandrel (1) is connected with top drilling tool, and the bottom of splined mandrel (1) is stretched into splines shell (4) and in flower
Key shell slides up and down in (4), and stop collar (2), which is threadably secured, is connected to splined mandrel (1) top；Splines shell (2)
Bottom is fixedly connected with washing pipe (5)；
Upper cylinder body (6) and lower cylinder body (14) are separately positioned on the outside of washing pipe (5), washing pipe (5) two sections be respectively provided with one it is recessed
Slot, upper groove lower section are equipped with upper dummy piston (7), are formed and are sealed between upper groove, upper cylinder body (6) and upper dummy piston (7)
Oil pocket (8)；It is equipped with lower dummy piston (13) above lower groove, fixed piston (16), lower groove, lower cylinder body are equipped with below lower groove
(14), lower seal oil chamber (15) is formed between lower dummy piston (13) and fixed piston (16)；
Connector (10) upper and lower ends external screw thread is separately connected upper cylinder body (6) and lower cylinder body (14), and separates upper seal oil chamber (8)
With lower seal oil chamber (15), adjusting set (9) and lower adjusting are separately installed on connector (10) upper and lower ends endoporus internal thread
It covers (12), dummy piston (7) is installed at the top of upper adjusting set (9), lower adjusting set (12) bottom is equipped with lower dummy piston
(13)；The top of upper adjusting set (9) and the lower part of lower adjusting set (12) are threadedly attached in respectively on connector (10), are passed through
The screw-in of screw thread and the volume size adjusting for screwing out the upper seal oil chamber (8) of realization and lower seal oil chamber (15)；In upper adjusting set (9)
Lower part and the top of lower adjusting set (12) be locked respectively by the adjusting pinning (11) being mounted on connector (10)
On connector (10)；
Fixed piston (16) is threadably secured the bottom for being connected to washing pipe (5), and the bottom of lower cylinder body (14), which is fixedly connected down, to be connect
Head (17), lower contact (17) are connected with lower drilling tool.
2. full hydraulic adjustable rigidity bidirectional flexible short circuit according to claim 1, which is characterized in that the upper adjusting set
(9) and the outer circle of lower adjusting set (12) is provided with 20~30 flat recesses in the axial direction, is respectively used to along the circumferential direction stir rotation
Adjusting set (9) and lower adjusting set (12) on modulation section.
3. full hydraulic adjustable rigidity bidirectional flexible short circuit according to claim 1, which is characterized in that the washing pipe (5)
Intermediate position be equipped with 4 mud balance holes.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261790.4A CN106761457B (en) | 2016-12-30 | 2016-12-30 | A kind of full hydraulic adjustable rigidity bidirectional flexible short circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611261790.4A CN106761457B (en) | 2016-12-30 | 2016-12-30 | A kind of full hydraulic adjustable rigidity bidirectional flexible short circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106761457A CN106761457A (en) | 2017-05-31 |
| CN106761457B true CN106761457B (en) | 2018-09-04 |
Family
ID=58954860
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611261790.4A Expired - Fee Related CN106761457B (en) | 2016-12-30 | 2016-12-30 | A kind of full hydraulic adjustable rigidity bidirectional flexible short circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106761457B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2113589C1 (en) * | 1996-06-18 | 1998-06-20 | Акционерное общество "Татнефть" Татарский научно-исследовательский и проектный институт нефти "ТатНИПИнефть" | Device for disconnection of pipe string |
| CN2437840Y (en) * | 2000-08-09 | 2001-07-04 | 刘运林 | Multifunctional connector |
| CN202810686U (en) * | 2012-08-10 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Anchoring type multilateral well window height adjusting pup joint |
| CN203129975U (en) * | 2013-02-06 | 2013-08-14 | 中国石油化工股份有限公司 | Hydraulic torque safety joint |
| CN104329032A (en) * | 2014-09-23 | 2015-02-04 | 中国石油集团渤海钻探工程有限公司 | Flexible connector for dual-layer continuous oil pipes |
-
2016
- 2016-12-30 CN CN201611261790.4A patent/CN106761457B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2113589C1 (en) * | 1996-06-18 | 1998-06-20 | Акционерное общество "Татнефть" Татарский научно-исследовательский и проектный институт нефти "ТатНИПИнефть" | Device for disconnection of pipe string |
| CN2437840Y (en) * | 2000-08-09 | 2001-07-04 | 刘运林 | Multifunctional connector |
| CN202810686U (en) * | 2012-08-10 | 2013-03-20 | 中国石油集团长城钻探工程有限公司 | Anchoring type multilateral well window height adjusting pup joint |
| CN203129975U (en) * | 2013-02-06 | 2013-08-14 | 中国石油化工股份有限公司 | Hydraulic torque safety joint |
| CN104329032A (en) * | 2014-09-23 | 2015-02-04 | 中国石油集团渤海钻探工程有限公司 | Flexible connector for dual-layer continuous oil pipes |
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| Publication number | Publication date |
|---|---|
| CN106761457A (en) | 2017-05-31 |
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Granted publication date: 20180904 Termination date: 20211230 |