CN107701129A - A kind of downhole tool electromagnetism rotating controls pipe nipple - Google Patents
A kind of downhole tool electromagnetism rotating controls pipe nipple Download PDFInfo
- Publication number
- CN107701129A CN107701129A CN201710781249.4A CN201710781249A CN107701129A CN 107701129 A CN107701129 A CN 107701129A CN 201710781249 A CN201710781249 A CN 201710781249A CN 107701129 A CN107701129 A CN 107701129A
- Authority
- CN
- China
- Prior art keywords
- pipe nipple
- rotary shaft
- switch
- downhole tool
- contact
- 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
- 210000002445 nipple Anatomy 0.000 title claims abstract description 30
- 230000000694 effects Effects 0.000 claims abstract description 8
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims description 12
- 239000004020 conductor Substances 0.000 claims description 3
- 239000011810 insulating material Substances 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 1
- 238000011010 flushing procedure Methods 0.000 abstract description 7
- 238000013016 damping Methods 0.000 abstract description 4
- 238000005553 drilling Methods 0.000 abstract description 4
- 239000004519 grease Substances 0.000 abstract description 4
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000000605 extraction Methods 0.000 abstract description 2
- 239000003345 natural gas Substances 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 4
- 239000004576 sand Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 239000003129 oil well Substances 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920005372 Plexiglas® Polymers 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009924 canning Methods 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003340 mental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012946 outsourcing Methods 0.000 description 1
- 239000004926 polymethyl methacrylate Substances 0.000 description 1
- 239000011257 shell material Substances 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization 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
- E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
-
- 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
-
- 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
- E21B17/028—Electrical or electro-magnetic connections
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 relates to a kind of downhole tool electromagnetism rotating to control pipe nipple, category oil, natural gas extraction drilling tool technical field.The pipe nipple includes housing, top connection, lower contact, rotary shaft and switching device, rotary shaft is installed in housing, magnet is symmetrically installed with by support frame in rotary shaft, screw thread is provided with lower spline joint in rotary shaft on the outside of lower alignment bearing, interference is provided with switching device in rotary shaft on the outside of upper alignment bearing, and screw thread is provided with upper spline joint in the rotary shaft on the outside of switching device.The pipe nipple is simple in construction, novel in design, solves the rotating speed that existing speed limit ring can not control instrument well, and the damping grease inside speed limit ring is once finished, speed limit ring will fail, will not again to instrument produce slowing effect the problem of.The pipe nipple can meet requirement of the underground sand-wash well-flushing instrument to eddy flow rotating speed, instrument is reached the optimum Working under different operating modes；It is with a wide range of applications.
Description
Technical field
The present invention relates to a kind of downhole tool electromagnetism rotating to control pipe nipple, category oil, natural gas extraction drilling tool technology
Field.
Background technology
After oil field enters high water-cut stage, some oil wells shake out getting worse, oil reservoir sand often occur and bury or oil well pump sand card
Phenomenon.Produce liquid has turned into one of major issue for influenceing oilfield stable production volume increase containing sand.
Continuous pipe rotation sand-flushing technology is the most basic of situ of drilling well application at present, and most widely one kind is done
Method, but the Flow Field Distribution rule and working condition of flushing tool can change with the change of different eddy flow speed conditions
Become so that flushing tool can not play its effect well, have a strong impact on the effect of downhole sand removing.Washed for adjustment underground sand-wash
The eddy flow rotating speed of well instrument, speed limit ring is installed mostly on instrument at present instrument is slowed down.But speed limit ring can only be single
One slow down to instrument, can not control the rotating speed of instrument well, and the damping grease inside speed limit ring is once finished,
Speed limit ring will fail, and will not produce slowing effect to instrument again.
The content of the invention
It can be good at controlling rotating speed it is an object of the present invention to provide one kind, can be with reasonable adjusting its rotating speed control model
Enclose, to realize under different eddy flow speed conditions, meet requirement of the underground sand-wash well-flushing instrument to eddy flow rotating speed, reach instrument
The downhole tool electromagnetism rotating control pipe nipple of optimum Working under different operating modes.
The technical scheme is that：
A kind of downhole tool electromagnetism rotating controls pipe nipple, including housing, top connection, lower contact, rotary shaft and switching device, and it is special
Sign is：The threaded one end of housing is provided with top connection, and the other end screw thread of housing is provided with lower contact, and housing is interior by symmetrical
The upper alignment bearing and lower alignment bearing set is provided with rotary shaft, in the rotary shaft between upper alignment bearing and lower alignment bearing
Magnet is symmetrically installed with by support frame, screw thread is provided with lower spline joint, upper righting in the rotary shaft on the outside of lower alignment bearing
Interference is provided with switching device in rotary shaft on the outside of bearing, and screw thread is provided with upper spline and connect in the rotary shaft on the outside of switching device
Head.
Gap is provided between described switching device and inner walls.
Described switching device includes switch pedestal, flow guiding disc, switch tactile disk and rate controlling switch, is equipped with and leads in switch pedestal
Flow table；Flow guiding disc switchs built with rate controlling, is touched on the flow guiding disc of rate controlling switch side equipped with switch tactile disk, rate controlling switch with switch
Disk contact connection.
Described switch pedestal, flow guiding disc, flowing hole is evenly equipped with respectively on switch tactile disk.
Described flow guiding disc is the goblet that section is in " mountain " font.
Radial on switch tactile disk between the flowing hole of described switch tactile disk to be provided with multiple guide grooves, guide groove is interior respectively
Contact head is installed.
Described guide groove quantity is 6；Contact head in guide groove is symmetrically divided into 3 groups, and each group contact head is on switch tactile disk
Radial position is different.
Described rate controlling switch is made up of mounting ring, guide rod, spring and centrifugal-block, and shape corresponding with guide groove is equal on mounting ring
Multiple guide rods are furnished with, centrifugal-block is slidably fitted with guide rod；Spring is housed on the guide rod above centrifugal-block.
Contact bar is provided with described centrifugal-block, rate controlling switch is by contacting bar with switching the contact head activity on tactile disk
Contact connection.
Multiple T-pieces are evenly equipped with the circumference of described rotary shaft, coil are wound with T-piece, coil is through wire with connecing
Contact connects.
Described flow guiding disc, switch pedestal and switch tactile disk is made up of insulating materials respectively, described mounting ring, is oriented to
Bar, centrifugal-block and contact bar are made of an electrically conducting material respectively.
The beneficial effect of the present invention compared with prior art is：
Downhole tool electromagnetism rotating control pipe nipple is simple in construction, novel in design, during work, by centrifugal-block with switch tactile disk
The different each group contact head contact of radial position, can be achieved the scope control of instrument Rational Rotation Speed；Reach the purpose of control rotating speed.
Solve existing speed limit ring single to slow down to instrument, the rotating speed of instrument, and speed limit can not be controlled well
Damping grease inside ring is once finished, speed limit ring will fail, will not again to instrument produce slowing effect the problem of.The downhole tool
Electromagnetism rotating control pipe nipple may be implemented under different eddy flow speed conditions, meet that underground sand-wash well-flushing instrument is wanted to eddy flow rotating speed
Ask, instrument is reached the optimum Working under different operating modes.With the characteristics of strong applicability, practicality is good, have extensive
Application prospect.
Brief description of the drawings
Fig. 1 is the cross section structure diagram of the present invention；
Fig. 2 is A-A in Fig. 1 to cross section structure schematic diagram；
Fig. 3 is mplifying structure schematic diagram at the A in Fig. 1；
Fig. 4 is the dimensional structure diagram of the switching device of the present invention；
Fig. 5 is the structural representation of the rate controlling switch of the present invention；
Fig. 6 is the structural representation of the switch tactile disk of the present invention.
In figure：1st, housing, 2, top connection, 3, lower contact, 4, rotary shaft, 5, upper alignment bearing, 6, lower alignment bearing, 7, branch
Support, 8, magnet, 9, T-piece, 10, coil, 11, lower spline joint, 12, switch pedestal, 13, flow guiding disc, 14, switch tactile disk,
15th, mounting ring, 16, guide rod, 17, spring, 18, centrifugal-block, 19, contact bar, 20, guide groove, 21, contact head, 22, upper spline
Joint, 23, winding displacement hole.
Embodiment
Downhole tool electromagnetism rotating control pipe nipple includes housing 1, top connection 2, lower contact 3, rotary shaft 4 and switch dress
Put, the threaded one end of housing 1 is provided with top connection 2, and the other end screw thread of housing 1 is provided with lower contact 3, and housing 1 is interior by right
The upper alignment bearing 5 and lower alignment bearing 6 for claiming setting are provided with rotary shaft 4, and multiple T are axially evenly equipped with the circumference of rotary shaft 4
Shape part 9, coil 10 is wound with T-piece 9.Pass through support frame 7 in rotary shaft 4 between upper alignment bearing 5 and lower alignment bearing 6
Magnet 8 is symmetrically installed with, screw thread is provided with lower spline joint 11, upper alignment bearing 5 in the rotary shaft 4 in the lower outside of alignment bearing 6
Interference is provided with switching device in the rotary shaft 4 in outside.
Switching device includes switch pedestal 12, flow guiding disc 13, switch tactile disk 14 and rate controlling switch, flow guiding disc 13
The goblet of " mountain " font.Switch pedestal 12, flow guiding disc 13, switch tactile disk 14 on be evenly equipped with flowing hole respectively.Switch pedestal 12
It is upper that flow guiding disc 13 is housed；Flow guiding disc 13 switchs built with rate controlling, equipped with switch tactile disk 14 on the flow guiding disc of rate controlling switch side.Open
Close and be arranged radially 6 guide grooves 20 on the switch tactile disk 14 between the flowing hole of tactile disk 14, be fixedly mounted respectively in guide groove 20
There is the contact head 21 of variable resistor.Contact head 21 in 6 guide grooves 20 is symmetrically divided into 3 groups, and each group contact head 21 is in switch tactile disk
Radial position is different on 14；Thus it is divided into high, medium and low three gear；Each group contact head 21 is connected by the wire in winding displacement hole 23 respectively
The positive and negative electrode of wiring circle 10.The coil 10 of downhole tool electromagnetism rotating control pipe nipple is wound using copper cash, the coil wound
10 be positioned over it is non magnetic（Such as plexiglas, ceramics etc.）In the outer canning tube of underground material, to avoid coil 10 exposed and drilling fluid
Contact short circuit, it is desirable to which outsourcing shell material heat conductivility is good, can be cooled to coil 10 by working fluid.
Rate controlling switch is made up of mounting ring 15, guide rod 16, spring 17 and centrifugal-block 18, right with guide groove 20 on mounting ring 15
Answer shape to be evenly equipped with 6 guide rods 16, centrifugal-block 18 is slidably fitted with guide rod 16；Filled on the guide rod 16 of the top of centrifugal-block 18
There is spring 17；Contact bar 19 is provided with centrifugal-block, each centrifugal-block 18 is identical in quality；Rate controlling switch by contact bar 19 respectively with
The movable contact of contact head 21 connection on corresponding switch tactile disk 14, it is in order that on the centrifugal-block 18 of rate controlling switch that it, which is acted on,
The corresponding contact head 21 of contact bar 19 realizes the contact under different rotating speeds.Screw thread is pacified in rotary shaft 4 on the outside of switching device
Equipped with upper spline joint 22.
Flow guiding disc 13, switch pedestal 12 and the switch tactile disk 14 of downhole tool electromagnetism rotating control pipe nipple are respectively by insulating
Material is made, and mounting ring 15, guide rod 16, centrifugal-block 18 and contact bar 19 are made of an electrically conducting material respectively.
The contact bar 19 of downhole tool electromagnetism rotating control pipe nipple does not contact in off working state with contact head 21；Six
The position of centrifugal-block 18 is on same circumference.During work, instrument offer rotation of the pipe nipple by being connected to its both ends is dynamic
Power, rotary shaft 4 is communicated rotational motion to by upper spline joint 22, will by lower spline joint 11 after rotating speed controls
Rotary power spreads out of the pipe nipple.In the course of work, rotary shaft 4 drives switching device and coil 10 to rotate, so that magnet 8 produces
Magnetic field, the coil 10 of rotation will cutting magnetic induction line；At the same time, the rate controlling switch of switching device increases with rotating speed, from
Centrifugal-block 18 radially slides along guide rod 16 in the presence of mental and physical efforts, is connect from there through contact bar 19 and 21 groups of the contact head of low gear
Touch, so that the closing of circuit of coil 10, produces induced-current, the circumgyration incision magnetic induction line of electrified coil 10 will be acted on by magnetic field
Power, reactive torque is produced, the rotating speed of rotary shaft 4 is reduced therewith；Braking is realized, reaches the purpose of control rotating speed.Work as rotation
After the rotating speed of axle 4 reduces to a certain extent, the centrifugal-block 18 that rate controlling switchs resets as rotating speed reduces in the presence of spring 17,
Contact bar 19 and depart from the contact with 21 groups of the contact head of low gear, disconnect the circuit of coil 10, induced-current disappears, after circuit disconnects
The circumgyration incision magnetic induction line of coil 10 will not be subject the active force in magnetic field, and so as to which reactive torque also no longer produces, rotary shaft 4 is made
Dynamic state stops；Make instrument stabilization of speed within the specific limits.
When rotating speed is too high, and the rate controlling scope of contact head 21 is organized more than low grade, the rotary centrifugal force suffered by centrifugal-block 18 will
It is larger.Now, it is mutually de- that low-grade group contact head 21 is crossed with the low-grade contact bar 19 organized corresponding to contact head 21 on centrifugal-block 18
From, during this, with middle-grade group contact head 21 corresponding to contact bar 19 and the phase of contact head 21 of middle-grade group on centrifugal-block 18
Contact, so that the closure of coil 10 forms loop, produce reactive torque and act on rotary shaft 4, realize braking, reach control rotating speed
Purpose.
Equally, it is higher with rotating speed, more than middle-grade group contact head 21 rate controlling scope when, the rotation suffered by centrifugal-block 18
Centrifugal force will be bigger.Now, with middle-grade group contact head 21 corresponding to contact bar 19 on centrifugal-block 18 cross middle-grade group contact head
21 are mutually disengaged, during this, with high-grade group contact head 21 corresponding to contact bar 19 on centrifugal-block 18 with it is high-grade organize connect
Contact 21 is in contact, so that the closure of coil 10 forms loop, produces reactive torque and acts on rotary shaft 4, realize braking, reach
Control the purpose of rotating speed；So repeatedly, the reasonable control of the multistage range of speeds is realized.
The contact with three pairs of variable resistors of centrifugal-block 18 on the rate controlling switch of downhole tool electromagnetism rotating control pipe nipple
During first 21 contact, three butt contacts of two centrifugal-blocks 18 from switching different radial positions on tactile disk 14 only in symmetric position
It is in contact condition for a pair in 21, and other centrifugal-blocks 18 and contact head 21 turn all in released state in certain
Only a pair of centrifugal-blocks 18 contact with the contact head 21 of a pair of variable resistors in fast scope, so as to which coil closes to form loop, produce
Raw reactive torque acts on rotary shaft, realizes braking, reaches the purpose of control rotating speed.
When the required range of speeds is different, if requiring that rotating speed is smaller, the position of six centrifugal-blocks 18 will be substantially upper
In on same less circumference, at this moment had in six centrifugal-blocks 18 a pair and switch tactile disk 14 on different radial positions three
The less butt contact 21 of radial position in the contact head 21 of variable resistor is contacted, so as to realize beating for speed switch
Open, coil closes to form loop；If it is required that rotating speed is larger, the positions of six centrifugal-blocks 18 will be located substantially on same larger
Circumference on, at this moment also had in six centrifugal-blocks 18 a pair from switch tactile disk 14 on different radial positions three pairs of variable resistors
The contact head 21 of the larger pair of variable resistor of radial position contacts in contact, so as to realize the opening of speed switch, line
Trap closes to form loop；And then braking is realized, reach the purpose of control rotating speed.The downhole tool electromagnetism rotating controls pipe nipple structure
Simply, novel in design, solve existing speed limit ring single can only slow down to instrument, can not control instrument well
Rotating speed, and the damping grease inside speed limit ring is once finished, and speed limit ring will fail, and will not produce slowing effect to instrument again and ask
Topic.Downhole tool electromagnetism rotating control pipe nipple may be implemented under different eddy flow speed conditions, meet underground sand-wash well-flushing instrument
Requirement to eddy flow rotating speed, instrument is set to reach the optimum Working under different operating modes；With strong applicability, the good spy of practicality
Point, is with a wide range of applications.
Claims (10)
1. a kind of downhole tool electromagnetism rotating controls pipe nipple, including housing（1）, top connection（2）, lower contact（3）, rotary shaft（4）
And switching device, it is characterised in that：Housing（1）Threaded one end top connection is installed（2）, housing（1）The other end screw thread peace
Equipped with lower contact（3）, housing（1）It is interior to pass through symmetrically arranged upper alignment bearing（5）With lower alignment bearing（6）Rotary shaft is installed
（4）, upper alignment bearing（5）With lower alignment bearing（6）Between rotary shaft（4）On pass through support frame（7）It is symmetrically installed with magnet
（8）, lower alignment bearing（6）The rotary shaft in outside（4）Upper screw thread is provided with lower spline joint（11）, upper alignment bearing（5）Outside
Rotary shaft（4）Upper interference is provided with switching device, the rotary shaft on the outside of switching device（4）Upper screw thread is provided with upper spline joint
（22）.
A kind of 2. downhole tool electromagnetism rotating control pipe nipple according to claim 1, it is characterised in that：Described switch dress
Put including switch pedestal（12）, flow guiding disc（13）, switch tactile disk（14）Switched with rate controlling, switch pedestal（12）It is upper that flow guiding disc is housed
（13）；Flow guiding disc（13）Switched built with rate controlling, rate controlling switchs the flow guiding disc of side（13）It is upper that switch tactile disk is housed（14）, rate controlling
Switch and switch tactile disk（14）Contact connection.
A kind of 3. downhole tool electromagnetism rotating control pipe nipple according to claim 2, it is characterised in that：Described switch bottom
Seat（12）, flow guiding disc（13）, switch tactile disk（14）It is upper to be evenly equipped with flowing hole respectively.
A kind of 4. downhole tool electromagnetism rotating control pipe nipple according to Claims 2 or 3, it is characterised in that：Described leads
Flow table（13）It is in the goblet of " mountain " font for section.
A kind of 5. downhole tool electromagnetism rotating control pipe nipple according to claim 2, it is characterised in that：Described switch touches
Disk（14）Flowing hole between switch tactile disk（14）It is above radial to be provided with multiple guide grooves（20）, guide groove（20）Inside install respectively
There is contact head（21）.
A kind of 6. downhole tool electromagnetism rotating control pipe nipple according to claim 5, it is characterised in that：Described guide groove
（20）Quantity is 6；Guide groove（20）Interior contact head（21）Symmetrically it is divided into 3 groups, each group contact head（21）In switch tactile disk（14）
Upper radial position is different.
A kind of 7. downhole tool electromagnetism rotating control pipe nipple according to claim 2, it is characterised in that：Described rate controlling is opened
Close by mounting ring（15）, guide rod（16）, spring（17）And centrifugal-block（18）Form, mounting ring（15）Upper and guide groove（20）It is corresponding
Shape is evenly equipped with multiple guide rods（16）, guide rod（16）On be slidably fitted with centrifugal-block（18）；Centrifugal-block（18）The guiding of top
Bar（16）It is upper that spring is housed（17）.
A kind of 8. downhole tool electromagnetism rotating control pipe nipple according to claim 7, it is characterised in that：Described centrifugal-block
（18）On be provided with contact bar（19）, rate controlling switch is by contacting bar（19）With switching tactile disk（14）On contact head（21）Activity
Contact connection.
A kind of 9. downhole tool electromagnetism rotating control pipe nipple according to claim 1, it is characterised in that：Described rotary shaft
（4）Circumference on be evenly equipped with multiple T-pieces（9）, T-piece（9）On be wound with coil（10）, coil（10）Through wire and contact head
（21）Connection.
A kind of 10. downhole tool electromagnetism rotating control pipe nipple according to claim 1, it is characterised in that：Described water conservancy diversion
Disk（13）, switch pedestal（12）With switch tactile disk（14）It is made up respectively of insulating materials, described mounting ring（15）, guide rod
（16）, centrifugal-block（18）With contact bar（19）It is made of an electrically conducting material respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710781249.4A CN107701129B (en) | 2017-09-01 | 2017-09-01 | Electromagnetic rotating speed control short joint of downhole tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710781249.4A CN107701129B (en) | 2017-09-01 | 2017-09-01 | Electromagnetic rotating speed control short joint of downhole tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107701129A true CN107701129A (en) | 2018-02-16 |
| CN107701129B CN107701129B (en) | 2023-11-10 |
Family
ID=61171552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710781249.4A Active CN107701129B (en) | 2017-09-01 | 2017-09-01 | Electromagnetic rotating speed control short joint of downhole tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107701129B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625804A (en) * | 2018-06-11 | 2018-10-09 | 长江大学 | A kind of rotational flow flushing tool that rotating speed is controllable |
| CN110318695A (en) * | 2019-08-06 | 2019-10-11 | 成都阿斯贝瑞科技有限公司 | A kind of fluid damping is rotated in deceleration well-flushing tool |
| CN110336490A (en) * | 2019-07-24 | 2019-10-15 | 江西联创光电科技股份有限公司 | A kind of drop magnetic starting device of direct supercurrent induction heating motor |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182766A (en) * | 2007-12-11 | 2008-05-21 | 西安石油大学 | Measurement method of down-hole boring tool (drill) rotative velocity and direction and short node |
| CN201152170Y (en) * | 2007-12-11 | 2008-11-19 | 西安石油大学 | Pup joint capable of measuring down-hole boring tool rotation velocity and direction |
| CN105221622A (en) * | 2015-09-17 | 2016-01-06 | 同济大学 | The equivalent inertial mass damper of variable rotation |
-
2017
- 2017-09-01 CN CN201710781249.4A patent/CN107701129B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101182766A (en) * | 2007-12-11 | 2008-05-21 | 西安石油大学 | Measurement method of down-hole boring tool (drill) rotative velocity and direction and short node |
| CN201152170Y (en) * | 2007-12-11 | 2008-11-19 | 西安石油大学 | Pup joint capable of measuring down-hole boring tool rotation velocity and direction |
| CN105221622A (en) * | 2015-09-17 | 2016-01-06 | 同济大学 | The equivalent inertial mass damper of variable rotation |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108625804A (en) * | 2018-06-11 | 2018-10-09 | 长江大学 | A kind of rotational flow flushing tool that rotating speed is controllable |
| CN108625804B (en) * | 2018-06-11 | 2024-03-22 | 长江大学 | Rotational flow flushing tool with controllable rotational speed |
| CN110336490A (en) * | 2019-07-24 | 2019-10-15 | 江西联创光电科技股份有限公司 | A kind of drop magnetic starting device of direct supercurrent induction heating motor |
| CN110336490B (en) * | 2019-07-24 | 2021-04-02 | 江西联创光电科技股份有限公司 | Magnetism reduction starting device of superconducting direct current induction heating motor |
| CN110318695A (en) * | 2019-08-06 | 2019-10-11 | 成都阿斯贝瑞科技有限公司 | A kind of fluid damping is rotated in deceleration well-flushing tool |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107701129B (en) | 2023-11-10 |
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