CN105915110A - Downhole vibration energy collection device - Google Patents
Downhole vibration energy collection device Download PDFInfo
- Publication number
- CN105915110A CN105915110A CN201610286596.5A CN201610286596A CN105915110A CN 105915110 A CN105915110 A CN 105915110A CN 201610286596 A CN201610286596 A CN 201610286596A CN 105915110 A CN105915110 A CN 105915110A
- Authority
- CN
- China
- Prior art keywords
- support
- circular ring
- eccentric circular
- ring
- cantilever beam
- 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
- 210000000515 tooth Anatomy 0.000 claims description 15
- 239000002184 metal Substances 0.000 claims description 7
- 229910052751 metal Inorganic materials 0.000 claims description 7
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052802 copper Inorganic materials 0.000 claims description 6
- 239000010949 copper Substances 0.000 claims description 6
- 239000000919 ceramic Substances 0.000 claims description 4
- 238000007789 sealing Methods 0.000 claims description 4
- 230000005484 gravity Effects 0.000 abstract description 6
- 230000010355 oscillation Effects 0.000 abstract description 5
- 239000003208 petroleum Substances 0.000 abstract description 2
- 238000005553 drilling Methods 0.000 description 7
- 230000000694 effects Effects 0.000 description 6
- 238000010521 absorption reaction Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 3
- 238000005452 bending Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 230000008961 swelling Effects 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005284 excitation Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02N—ELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
- H02N2/00—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
- H02N2/18—Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
Abstract
The present invention belongs to the field of the petroleum engineering, and especially relates to a downhole vibration energy collection device. The device comprises a support, a cantilever piezoelectric plate, an internal tooth, an eccentric circular ring, an outer shell, an end expansion ring and a taper press ring; The cantilever piezoelectric plate is installed at the outer side of the support, and the support sleeves in the eccentric circular ring through a lower bearing and an upper bearing; the internal tooth is inlaid on the eccentric circular ring, and the eccentric circular ring is located in the outer shell; an upper bulkhead and a lower bulkhead are connected with the support through the screw thread, and the outer shell is pressed between the upper bulkhead and the lower bulkhead; and the end expansion ring is installed between the taper press ring and the upper bulkhead. The eccentric circular ring is rotated relative to a drill string under the action of the gravity and the inertia force and drives the internal tooth on the eccentric circular ring to dial the cantilever piezoelectric plate, and even if the vibration frequency of the drill string is not located on the resonance frequency of the cantilever piezoelectric plate, the energy of the rotation, the shimmy and the torsional oscillation of the drill string may be effectively absorbed.
Description
Technical field
The invention belongs to petroleum works field, in particular it relates to can be the most steady during a kind of oil gas drilling
Surely the energy gathering apparatus powered for downhole electronics.
Background technology
During rotary drilling, the rotating energy that rotating disk or top are driven passes to drill bit by drill string.Rotating disk (top is driven)
Energy except be used for drive drill bit to break rock in addition to, some is converted into the kinetic energy of drill string, another part energy
Amount is then dissipated in modes such as the frictions of drill string and the borehole wall.The kinetic energy of drill string include drill string rotating energy and
Vibrational energy, it is part energy necessary, inevitable that rotating energy is used for transmitting movement, and vibrational energy
Amount is then part energy inevitable, unnecessary in drilling process.Drillstring vibrations can cause drill string originally
Body, drill bit or even ground installation are impaired, in order to reduce the negative effect of drillstring vibrations, it will usually drill bit with
The amortisseur that one rigidity is soft is installed between drill collar, a part of vibrational energy is dissipated.
Owing to vibration is nearly ubiquitous and has a higher energy density, therefore to the collection of vibrational energy with
The research of trans-utilization is progressively risen in recent decades.Conventional energy gathering apparatus can be reduced to band resistance
The spring oscillator structure of Buddhist nun, has respective natural frequency, when energy gathering apparatus natural frequency with
When the excited frequency of vibration source is identical, it may occur that resonance, the energy at this moment absorbed is maximum, but excited frequency is slightly
Micro-deviation natural frequency, the energy of absorption will be greatly reduced.That is the band of energy gathering apparatus
Width is the narrowest, and therefore, how expanding the bandwidth of energy gathering apparatus has become what researchers puted forth effort to solve
One of problem.It addition, the set direction of conventional energy gathering apparatus is very strong, and major part vibration source
Direction of vibration is change, and therefore, it is urgently to be resolved hurrily that research multi-directional energy gathering apparatus becomes another
Problem.
Energy produced by drillstring vibrations is appreciable, and it is to solve that the vibrational energy of absorption drill string generates electricity
One of effective way of powerup issue of downhole instrument.Efficient absorption drillstring vibrations energy, needs to solve above-mentioned
Two problems in the presence of energy gathering apparatus.Additionally, due on drill string form and vibrational state
Particularity-slim-lined construction, extensional vibration, side shake, twisting vibration also deposit, and the direction of side shake has
Certain randomness-make to be difficult to be suitable in down-hole for the energy gathering apparatus designed by ground installation.
Drill string diameter is little, wall thickness is limited, increases drill string external diameter and can increase blocking risk, and reducing drill string internal diameter can increase
Drilling fluid pressure drop, therefore the available radial dimension of energy gathering apparatus is the least；Three kinds of vibrations of drill string
The frequency band range of form is different, and, their frequency band changes with the change of drilling condition, therefore vibrates
Energy collecting device should have wider frequency band to adapt to different drilling conditions.For drillstring vibrations and drill string
The feature of structure, the present invention by a kind of for offer broadband, rotation, torsional oscillation and the vibrational energy such as shimmy can be absorbed
The energy gathering apparatus of amount.
Summary of the invention
For the defect overcoming prior art to exist, the present invention provides one to be down-hole steadily in the long term in down-hole
Electronic machine provide energy, broadband can absorb drill string rotate, the shaking of torsional oscillation and the vibrational energy such as shimmy
Energy collection device.
For achieving the above object, the present invention uses following proposal:
Underground vibrating energy collecting device, including: support, cantilever beam piezoelectric patches, lower end cap, lower bearing,
Internal tooth, Eccentric Circular Ring, upper bearing (metal), shell body, upper plug head, end expansion loop and taper pressure ring；Cantilever
Beam piezoelectric patches is arranged on the outside of support, and support is contained in Eccentric Circular Ring by lower bearing, upper bearing sleeve；Partially
Being inlaid with internal tooth on heart annulus, Eccentric Circular Ring is positioned at shell body；Lower end cap and upper plug head by screw thread and prop up
Frame is connected, and is pressed between lower end cap and upper plug head by shell body；End expansion loop is installed on taper pressure ring
And between upper plug head, together with taper pressure ring is bolted with upper plug head, taper pressure ring is tightened at bolt
Extrude end expansion loop under the effect of power and make end expansion loop generation expanded radially, thus support swelling is being bored
On column wall, rotate with drill string；This underground vibrating energy collecting device is not required to do any to drill string inwall
Process, processing can realize being reliably connected.
Relative to prior art, beneficial effects of the present invention is as follows: Eccentric Circular Ring is at gravity and the work of inertia force
Relatively rotate with drill string with lower, drive the internal tooth on Eccentric Circular Ring to stir cantilever beam piezoelectric patches, though drill string
Frequency of vibration not on the resonant frequency of cantilever beam piezoelectric patches, it is also possible to effective absorption drill string rotates, pendulum
Shake and the energy of torsional oscillation；Internal tooth is helical arrangement on Eccentric Circular Ring, during rotating a circle, and cantilever beam pressure
Electricity sheet can receive the excitation of different amplitude, expands the frequency band range of energy gathering apparatus further；
Compared to down-hole turbogenerator, energy gathering apparatus does not has exposed moving component in drilling fluid,
Add the life-span of downhole electronics power supply, it is possible to achieve the purpose of once mounting life-time service；
The present invention installs simply in drill string, firmly, it is not necessary to drill string carries out extra process, processing；Can be more
The version mending existing device for collecting piezoelectric vibration energy cannot efficiently collect brill for drillstring vibrations feature
The deficiency of post vibrational energy.
Accompanying drawing explanation
Fig. 1 is the decomposing schematic representation of energy gathering apparatus；
Fig. 2 is the decomposing schematic representation after energy gathering apparatus removes cantilever beam piezoelectric patches；
Fig. 3 be energy gathering apparatus longitudinal sectional view；
Fig. 4 is the transverse sectional view of energy gathering apparatus；
Fig. 5 is the schematic diagram of cantilever beam piezoelectric patches；
In figure: 1, support, 2, cantilever beam piezoelectric patches, 3, lower end cap, 4, lower bearing, 5, internal tooth, 6,
Eccentric Circular Ring, 7, upper bearing (metal), 8, shell body, 9, upper plug head, 10, end expansion loop, 11, taper pressure
Ring.
Detailed description of the invention
As shown in Figures 1 to 5, underground vibrating energy collecting device, including: support 1, cantilever beam piezoelectric patches 2,
Lower end cap 3, lower bearing 4, internal tooth 5, Eccentric Circular Ring 6, upper bearing (metal) 7, shell body 8, upper plug head 9, end are swollen
Tensioner ring 10 and taper pressure ring 11；Cantilever beam piezoelectric patches 2 is arranged on the outside of support 1, and support 1 passes through lower bearing
4, in upper bearing (metal) 7 is sleeved on Eccentric Circular Ring 6；Internal tooth 5 it is inlaid with, outside Eccentric Circular Ring 6 is positioned on Eccentric Circular Ring 6
In housing 8；Lower end cap 3 is connected with support 1 by screw thread with upper plug head 9, and shell body 8 is pressed on lower end cap
Between 3 and upper plug head 9；End expansion loop 10 is installed between taper pressure ring 11 and upper plug head 9, taper pressure ring 11
Together with being bolted with upper plug head 9, it is swollen that taper pressure ring 11 extrudes end under the effect of Bolt Tightening Force
Tensioner ring 10 makes end expansion loop generation expanded radially, thus by support 1 swelling on drill string inwall, with drill string one
Rise and rotate；This underground vibrating energy collecting device is not required to that drill string inwall does any process, processing can realize
It is reliably connected.
The outer wall of described support 1 is polyhedron, and cantilever beam piezoelectric patches 2 is fixed by screws under support 1 outer wall
End, and uniform along the circumferencial direction of support 1, and cantilever beam piezoelectric patches 2 length direction is parallel with support 1 axis, logical
Cross arrangement and can absorb the vibrational energy being perpendicular to support 1 axis any direction.
Cantilever beam piezoelectric patches 2, including: copper base 21, piezoelectric ceramic piece 22 and mass 23, copper base 21
Bottom is done thickening and is processed and be threaded hole, is connected with support 1 by screw, and piezoelectric ceramic piece 22 is pasted onto
The two sides up and down of copper base 21, and near the cantilever end stickup of copper base 21；Mass 23 is positioned at copper base
The free end of 21；Certain interval is there is, for the bending of cantilever beam piezoelectric patches 2 in mass 23 with the outer wall of support 1
Deformation provides space, and is used for preventing cantilever beam piezoelectric patches 2 from occurring excessive deformation to destroy；
Support 1 is threaded connection with lower end cap 3, is pressed on support 1 by lower bearing 4；Multiple internal tooths 5 are inlayed
On the inwall of Eccentric Circular Ring 6, uniform along the circumferencial direction spiral of Eccentric Circular Ring 6；It is inlaid with the bias of internal tooth 5
Annulus 6 is enclosed within the outside of the support 1 being provided with cantilever beam piezoelectric patches 2, by lower bearing 4 and the support of upper bearing (metal) 7
Effect keeps concentric with support 1, and can rotate freely relative to support 1；Under gravity, off-centre operation
The center of gravity of ring 6 tends to pointing to gravity direction, and therefore, when drill string rotates, Eccentric Circular Ring 6 does relative turning with support 1
Dynamic；Due to the relatively low present invention of drill string rotating speed do not use coil-permanent magnet mode to collect vibrational energy, but
The inwall of Eccentric Circular Ring 6 is provided with the internal tooth 5 of projection, when Eccentric Circular Ring 6 rotates, protruding internal tooth 5 groups
Dynamic cantilever beam piezoelectric patches 2, makes piezoelectric ceramic piece 22 that alternating bending to occur, thus absorbs the part energy of drill string rotating
Amount；When drill string generation side shake and twisting vibration, Eccentric Circular Ring 6, also can phase under the effect of inertia force
Support 1 is rotated, thus absorbs the shimmy energy with twisting vibration of part；Shell body 8 is enclosed within Eccentric Circular Ring 6
Outside, and coordinate with the maximum cylindrical of lower end cap 3, compressed by the upper plug head 9 of screwed tight with support 1
On lower end cap 3.Sealed by sealing ring between lower end cap 3, upper plug head 9 and shell body 8, lower end cap 3, on
Sealed by sealing ring between plug 9 and support 1, thus cantilever beam piezoelectric patches 2 electronic installation such as grade is bored with extraneous
Well liquid is isolated.
The operation principle of underground vibrating energy collecting device is as follows: Eccentric Circular Ring is under gravity and inertia force effect
Relatively rotating with rotary drill column, on Eccentric Circular Ring inwall, the projection of design stirs the piezoelectric patches of cantilever beam structure,
Make piezoelectric patches bend, thus absorb drill string rotation, torsional oscillation and shimmy energy；The most uniform
The cantilever beam arranged, its length direction is parallel with drillstring axis, can absorb the energy of drill string side shake.
Claims (5)
1. a underground vibrating energy collecting device, including: support, cantilever beam piezoelectric patches, lower end cap, lower bearing, internal tooth, Eccentric Circular Ring, upper bearing (metal), shell body, upper plug head, end expansion loop and taper pressure ring；It is characterized in that: cantilever beam piezoelectric patches is arranged on the outside of support, support is contained in Eccentric Circular Ring by lower bearing, upper bearing sleeve；Being inlaid with internal tooth on Eccentric Circular Ring, Eccentric Circular Ring is positioned at shell body；Lower end cap is connected with support by screw thread with upper plug head, and is pressed between lower end cap and upper plug head by shell body；End expansion loop is installed between taper pressure ring and upper plug head, together with taper pressure ring is bolted with upper plug head.
Underground vibrating energy collecting device the most according to claim 1, it is characterized in that, the outer wall of described support is polyhedron, and cantilever beam piezoelectric patches is fixed by screws in the lower end of support outer wall, and uniform along the circumferencial direction of support, cantilever beam piezoelectric patches length direction is parallel with support axis.
3. according to the underground vibrating energy collecting device described in claim 1-2, it is characterised in that cantilever beam piezoelectric patches, including: copper base, piezoelectric ceramic piece and mass, there is certain interval with the outer wall of support in mass.
4. according to the underground vibrating energy collecting device described in claim 1-3, it is characterised in that support is threaded connection with lower end cap, is pressed on support by lower bearing；Multiple internal tooths are embedded on the inwall of Eccentric Circular Ring, uniform along the circumferencial direction spiral of Eccentric Circular Ring；The Eccentric Circular Ring being inlaid with internal tooth is enclosed within the outside of the support being provided with cantilever beam piezoelectric patches, keeps concentric by the supporting role of lower bearing and upper bearing (metal) and support, and can rotate freely relative to support.
5., according to the underground vibrating energy collecting device described in claim 1-4, it is characterised in that sealed by sealing ring between lower end cap, upper plug head and shell body, sealed by sealing ring between lower end cap, upper plug head and support.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610286596.5A CN105915110B (en) | 2016-05-04 | 2016-05-04 | Underground vibrating energy collecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610286596.5A CN105915110B (en) | 2016-05-04 | 2016-05-04 | Underground vibrating energy collecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105915110A true CN105915110A (en) | 2016-08-31 |
| CN105915110B CN105915110B (en) | 2017-07-14 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610286596.5A Expired - Fee Related CN105915110B (en) | 2016-05-04 | 2016-05-04 | Underground vibrating energy collecting device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105915110B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329995A (en) * | 2016-09-14 | 2017-01-11 | 长春工业大学 | Toggle type piezoelectric energy harvesting device of annulus jet excitation used for Internet of Things node energy supply |
| CN106685264A (en) * | 2016-12-20 | 2017-05-17 | 南京信息工程大学 | Piezoelectric energy recovery device for pipeline vibration energy collection |
| CN108649837A (en) * | 2018-06-12 | 2018-10-12 | 东北石油大学 | A kind of piezoelectric energy-storage device for oil well detection device |
| CN109763792A (en) * | 2019-02-27 | 2019-05-17 | 中国地质大学（武汉） | A kind of vibration energy accumulator with the formula of boring |
| CN117081428A (en) * | 2023-10-18 | 2023-11-17 | 西安石油大学 | Energy recovery device of special rotary drill rod |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4788467A (en) * | 1984-07-30 | 1988-11-29 | Piezo Sona-Tool Corporation | Downhole oil well vibrating system |
| CN102005968A (en) * | 2010-11-01 | 2011-04-06 | 西南石油大学 | Petroleum drilling underground vibration power generating method and device |
| CN203180719U (en) * | 2013-03-15 | 2013-09-04 | 中国石油大学(北京) | Downhole vibration generator |
| CN105006991A (en) * | 2015-07-22 | 2015-10-28 | 上海交通大学 | Laminated piezoelectric downhole energy collection device |
-
2016
- 2016-05-04 CN CN201610286596.5A patent/CN105915110B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4788467A (en) * | 1984-07-30 | 1988-11-29 | Piezo Sona-Tool Corporation | Downhole oil well vibrating system |
| CN102005968A (en) * | 2010-11-01 | 2011-04-06 | 西南石油大学 | Petroleum drilling underground vibration power generating method and device |
| CN203180719U (en) * | 2013-03-15 | 2013-09-04 | 中国石油大学(北京) | Downhole vibration generator |
| CN105006991A (en) * | 2015-07-22 | 2015-10-28 | 上海交通大学 | Laminated piezoelectric downhole energy collection device |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106329995A (en) * | 2016-09-14 | 2017-01-11 | 长春工业大学 | Toggle type piezoelectric energy harvesting device of annulus jet excitation used for Internet of Things node energy supply |
| CN106329995B (en) * | 2016-09-14 | 2018-03-30 | 长春工业大学 | Dial type piezoelectric harvester for the annular space jet excitation of Internet of things node energy supply |
| CN106685264A (en) * | 2016-12-20 | 2017-05-17 | 南京信息工程大学 | Piezoelectric energy recovery device for pipeline vibration energy collection |
| CN106685264B (en) * | 2016-12-20 | 2018-07-31 | 南京信息工程大学 | Piezoelectric energy recovery device for pipe vibration collection of energy |
| CN108649837A (en) * | 2018-06-12 | 2018-10-12 | 东北石油大学 | A kind of piezoelectric energy-storage device for oil well detection device |
| CN108649837B (en) * | 2018-06-12 | 2021-03-02 | 东北石油大学 | Piezoelectric energy storage device for oil well underground detection equipment |
| CN109763792A (en) * | 2019-02-27 | 2019-05-17 | 中国地质大学（武汉） | A kind of vibration energy accumulator with the formula of boring |
| CN117081428A (en) * | 2023-10-18 | 2023-11-17 | 西安石油大学 | Energy recovery device of special rotary drill rod |
| CN117081428B (en) * | 2023-10-18 | 2024-03-12 | 西安石油大学 | Energy recovery device of special rotary drill rod |
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| Publication number | Publication date |
|---|---|
| CN105915110B (en) | 2017-07-14 |
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Granted publication date: 20170714 |