CN106285644A - A kind of drilling rod plug intelligent positioner based on electrohydraulic effect, system and localization method - Google Patents
A kind of drilling rod plug intelligent positioner based on electrohydraulic effect, system and localization method Download PDFInfo
- Publication number
- CN106285644A CN106285644A CN201610879436.1A CN201610879436A CN106285644A CN 106285644 A CN106285644 A CN 106285644A CN 201610879436 A CN201610879436 A CN 201610879436A CN 106285644 A CN106285644 A CN 106285644A
- Authority
- CN
- China
- Prior art keywords
- drilling rod
- positioner
- rod plug
- storage capacitor
- electrohydraulic effect
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/09—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes
- E21B47/095—Locating or determining the position of objects in boreholes or wells, e.g. the position of an extending arm; Identifying the free or blocked portions of pipes by detecting an acoustic anomalies, e.g. using mud-pressure pulses
Abstract
The invention discloses a kind of drilling rod plug intelligent positioner based on electrohydraulic effect, described positioner is for connecting jointly to move in down-hole with drilling rod plug, and described positioner includes power supply；Storage capacitor, described storage capacitor is connected with power supply；And electrode；Described storage capacitor is connected with electrode by the first control switch；Described electrode allows to be placed in liquid discharge passageway and by the energy in release storage capacitor to produce blast.This positioner provides signal can to plug in the location of down-hole real time position, and signal transmission distance is farther out.Present invention also offers alignment system and the localization method with this positioner.
Description
Technical field
The present invention relates to drilling technique field, a kind of drilling rod plug intelligent positioner based on electrohydraulic effect,
System and localization method.
Background technology
At present, Liner Bump-pressure formula completion technique plays key player in current cementing operation, due to its easy construction,
Need not next column or plug is bored in drifting, thus enjoy high praise.But along with the increase of well depth, in work progress, due to bruising
Pressure inconspicuous, it is impossible to correctly judge that bruising plug is the most real the most on earth, occurs few for staying plug, replacing engineerings such as leaving a blank more often
The generation of accident, brings risk to whole cementing operation.
" Yang Chao. resonance plug monitor control system [D]. Xi'an: Xi'an Technology University, 2013. " in disclose a kind of humorous
Shake plug monitor control system, and its device can reclaim after anchorage terminates, read the information that wherein stores, dispergation
The plug work process in down-hole.But its design need to be set up on the premise of anchorage is normally carried out, and plug is in down-hole
Work process is also only capable of after end-of-job obtaining, it is impossible to the instant understanding plug virtual condition in down-hole, it is impossible to solve well cementation
The special circumstances met in work.
Summary of the invention
It is an object of the present invention to provide a kind of drilling rod plug intelligent positioner based on electrohydraulic effect, it is possible to glue
Fill in and signal is provided in the location of down-hole real time position, and signal transmission farther out can be realized.
It is a further object to provide a kind of drilling rod plug intelligent positioner system based on electrohydraulic effect, energy
Enough real-time positioning plug real time positions in down-hole.
It is a further object to provide a kind of drilling rod plug intelligent locating method based on electrohydraulic effect.
To achieve these goals, the technical scheme is that
First aspect, the present invention provides a kind of drilling rod plug intelligent positioner based on electrohydraulic effect, and described location fills
Putting for connecting jointly to move in down-hole with drilling rod plug, described positioner includes
Power supply；
Storage capacitor, described storage capacitor is connected with power supply；And
Electrode；Described storage capacitor is connected with electrode by the first control switch；Described electrode allows to be placed in liquid and puts
To produce blast in electric channel and by the energy in release storage capacitor.
Alternatively and preferably, described positioner also includes the second control switch, and described second controls switch and power supply
Connect, for controlling the charging process of storage capacitor.
Alternatively and preferably, described first control switch is integrated in the same module with the second control switch.
Alternatively and preferably, described storage capacitor is made up of multiple electric capacity parallel connections.
Alternatively and preferably, described power supply is lithium battery.
This positioner when moving in down-hole, stores substantial amounts of electricity by storage capacitor with drilling rod plug, specifically
Time controls the first control switch conduction, and now substantial amounts of electricity is discharged in drilling fluid by electrode, at High Voltage electric field action
Under, owing to huge energy abrupt release is in discharge channel, the liquid in passage with regard to rapid vaporization, expand and set off an explosion,
Here it is so-called electrohydraulic effect.Sound wave and shock wave that blast produces are transferred to earth's surface, for follow-up in liquid or solid
Collecting unit collection analysis, thus judge the plug position in down-hole.Owing to energy is in abrupt release, the sound wave of generation and impact
Ripple transmission range is long, it is to avoid traditional acoustic wave transducer power is little, and the problem that transmission range is short is more applicable for down-hole ring
Border.
Second aspect, the present invention provides a kind of drilling rod plug intelligent positioning system based on electrohydraulic effect, including first party
Positioner, ripple receptor and computing unit described in face；
The pressure wave of described ripple receptor generation after receiving positioner sets off an explosion and/or sound wave；
Described computing unit is connected with ripple receptor, calculates drilling rod plug position according to the pressure wave received and/or sound wave
Put.
After positioner produces sound wave and pressure wave, it is acquired by ripple receptor, according still further to algorithm set in advance
Calculate the position of plug, so can realize positioning in real time to down-hole plug.
The third aspect, the present invention provides a kind of drilling rod plug intelligent locating method based on electrohydraulic effect, uses first party
Positioner described in face, described localization method also includes:
At ground receiver sound wave；Described sound wave discharges according to time interval by controlling electrode, in liquid discharge passageway
Set off an explosion and produce；And
Process acoustic signals according to the attenuation model pre-build, obtain transmission range, to determine the position of drilling rod plug
Put.
Alternatively and preferably, described localization method also includes:
Time difference according to sound wave pulse and sound wave transmission speed in media as well, calculate the instantaneous Bottom Runby of plug.
Alternatively and preferably, described localization method also includes:
Total distance that plug is descending is calculated by the described instantaneous Bottom Runby of cumulative different periods.
Accompanying drawing explanation
The structural representation of the drilling rod plug intelligent positioner based on electrohydraulic effect that Fig. 1 is provided by the embodiment of the present invention
Figure；
The structural representation of the drilling rod plug intelligent positioning system based on electrohydraulic effect that Fig. 2 is provided by the embodiment of the present invention
Figure；
The flow chart of the drilling rod plug intelligent locating method based on electrohydraulic effect that Fig. 3 is provided by the embodiment of the present invention；
In figure:
1-power supply；2-storage capacitor；3-first controls switch；4-second controls switch；5-electrode；101-positioner；
102-drilling rod plug；103-ripple receptor；104-computing unit；105-well.
Detailed description of the invention
In order to make those skilled in the art be more fully understood that the present invention program, below in conjunction with the accompanying drawings and detailed description of the invention
The present invention is described in further detail.
Term is explained
Electrohydraulic effect: High Voltage electric field passes through liquid, owing to huge energy abrupt release is in discharge channel, in passage
Liquid with regard to rapid vaporization, expand and set off an explosion.
Embodiment one
Embodiments providing a kind of drilling rod plug intelligent positioner based on electrohydraulic effect, its central scope is
Energy is compressed in time scale, then in specific time instantaneous relase, so can produce the sound that intensity is stronger
Ripple and/or shock wave, it is achieved longer-distance transmission.Even if therefore to move to down-hole with drilling rod plug deep for positioner
Position, it is also possible to produce the signal that can be detected by earth's surface.
Refer to Fig. 1 and 2, the positioner 101 that the embodiment of the present invention provides, control including power supply 1, storage capacitor 2, first
System switch 3 and electrode 5.This positioner 101 is connected with drilling rod plug 102 as an entirety, with drilling rod plug 102 at well
105 times motions.Now the surrounding of positioner 101 is the liquid environment being filled with drilling fluid.The power output end of power supply 1 and energy storage
Electric capacity 2 connects, and the outfan of storage capacitor 2 is connected with electrode 5 by the first control switch 3.Wherein, electrode 5 should be allowed to
It is exposed in described liquid environment.When the electricity in storage capacitor 2 reaches certain value, control 3 dozens, the first control switch
Opening, the electricity of storage capacitor 2 obtains discharging the most in a large number at electrode 5, produces in the drilling fluid discharge channel around electrode 5
Raw High Voltage electric field so that the electronics in 5 liquid of electrode is accelerated, and the fluid molecule near animating electrode 5.Quilt in liquid
The electronics ionized out is accelerated to ionize out more electronics by highfield between electrode, forms electron avalanche.It is ionized at fluid molecule
Region formed plasma channel.Along with the extension of ionized space, forming discharge channel between electrode 5, liquid is breakdown.Put
After electric channel produces, owing to discharge resistance is the least, the discharge current of tens kilo-amperes will be produced.Discharge current heating channel circumference liquid
Body, makes vaporizing liquid rapid outward expansion.The air cavity outer expanded rapidly produces powerful shock wave in aqueous medium.Impact
Ripple, with discharge current and the difference of discharge time, acts on surrounding medium in the way of momentum or surge.This liquid electricity
The shock wave that effect produces can transmit larger distance.Additionally, this device is as drilling rod plug real time kinematics together, energy
Enough to plug at the location of down well placement offer live signal.As long as analyzing positioner wave source position, it is possible to obtain
Know Position on rubber stopper.
Inventor finds when studying drilling rod plug localization method, and at location dress, 101 with drilling rod plug 102 motor process
In, it is not required to continuous discharge to provide continuous print signal, but needs interval electric discharge (description), therefore, if power supply 1
Continued power, may result in electric capacity charge volume saturated, wastes the energy.To this end, in certain embodiments, positioner 101 is also
Including the second control switch 4, second controls switch 4 is used for controlling startup and the stopping of power supply 1, to control filling of storage capacitor 2
Electric process.Under the preferred conditions, for the ease of global design and the arrangement of control circuit, can by second control switch 4 with
First controls switch 3 is incorporated in a control module, and the i.e. first two terminals controlling switch 3 connect storage capacitor 2 and electricity
Pole 5, second controls the controller (such as single-chip microcomputer) that switch 4 can be and the first control switch 3 phase independences, and its outfan is even
Connect the control end of power supply 1, start according to predetermined rule or close power supply 1, to control charge volume and the charging week of storage capacitor 2
Phase.
In the case of well depth is relatively deep, if the electricity of electrode 5 instantaneous relase is not enough, the pressure wave of generation or sound wave strong
Degree is not enough to realize longer-distance transmission.Or device can be caused when storage capacitor 2 breaks down malfunctioning.To this end, at some
In embodiment, storage capacitor 2 can be made up of multiple electric capacity parallel connections, so can increase total electricity that electric capacity stores, it is ensured that
Also obvious electrohydraulic effect can be produced in the case of transmission range is longer.If additionally, there is individual capacitive malfunctioning, also will not be to storage
The overall reserve of electricity of energy electric capacity 2 influences too much, and anti-locking apparatus is malfunctioning.
Power supply 1 can use DC source, such as the lithium battery used in underground work.
Embodiment two
In order to detect and analyze the ripple that a kind of positioner of embodiment produces, present embodiments provide a kind of based on liquid electricity effect
The drilling rod plug intelligent positioning system answered, this system includes a kind of described positioner 101 of embodiment, additionally includes being positioned at
The ripple receptor 103 on earth's surface and computing unit 104.Wherein, ripple receptor 103 can be acoustic receiver, is used for detecting liquid electricity
The strength sound wave that effect explosion time produces；Can also is that pressure transducer, for detecting the pressure that explosion time impact liquid produces
Ripple.In addition can also is that the combination of two kinds of ripple receptors.In the present embodiment, it is preferred to use acoustic receiver.Computing unit 104
Including computer and corresponding display device.
Embodiment three
Present embodiments provide the brill using the positioner in embodiment one or the alignment system in embodiment two to realize
Bar plug localization method, it is considered to the mode using drilling fluid or sleeve pipe to be combined with drilling fluid is used as transmission channel, selects
Good transmission frequency.The computational methods of transmission range can utilize sound wave attenuation model (Sound in particular medium
Propagation Loss:SPL) calculate, specifically may include steps of:
S1: at ground receiver sound wave；Described sound wave discharges according to time interval by controlling electrode, at liquid discharge passageway
In set off an explosion and produce；And
S2: process acoustic signals according to the attenuation model pre-build, obtain transmission range, to determine drilling rod plug
Position.
The transmission medium of sound wave can be liquid, such as drilling fluid, it is also possible to be the combination of liquid and solid, as sound wave is permissible
The sleeve pipe of drilling fluid and drilling rod is propagated, now needs the difference according to transmission channel to repair in setting up attenuation model
Just.The advantage of the method is make use of attenuation model, and position calculation result is more accurate.
S3: according to time difference and the sound wave transmission speed in media as well of sound wave pulse, calculates the instantaneous lower line-spacing of plug
From.
Assume that the sound wave pulse time interval with transmission is as 1s, then, owing to positioner is with plug motion (i.e. sound
Source is also in motion), then the time interval of the sound wave arrived at ground receiver is just for (1+t) s, and time difference is t, according to this time difference
And the transmission speed that sound wave is in media as well, it is possible to calculate sound wave Bottom Runby in 1s, owing to time interval is usual
Smaller, therefore can be considered as instantaneous distance.
S4: calculate total distance that plug is descending by the described instantaneous Bottom Runby of cumulative different periods.
Further, it is also possible to step 3 and step 4 are combined with step one and step 2, the calculating to Position on rubber stopper
Carry out parameters revision.
Above to a kind of drilling rod plug intelligent positioner based on electrohydraulic effect provided by the present invention, system and location
Method is described in detail.Principle and the embodiment of the present invention are set forth by specific case used herein, with
The explanation of upper embodiment is only intended to help to understand the core concept of the present invention.It should be pointed out that, for the art is common
For technical staff, under the premise without departing from the principles of the invention, it is also possible to the present invention is carried out some improvement and modification, these
Improve and modify in the protection domain also falling into the claims in the present invention.
Claims (9)
1. a drilling rod plug intelligent positioner based on electrohydraulic effect, it is characterised in that described positioner is used for and bores
Bar plug connects jointly to move in down-hole, and described positioner includes
Power supply；
Storage capacitor, described storage capacitor is connected with power supply；And
Electrode；Described storage capacitor is connected with electrode by the first control switch；It is logical that described electrode allows to be placed in liquid electric discharge
To produce blast in road and by the energy in release storage capacitor.
Drilling rod plug intelligent positioner based on electrohydraulic effect the most according to claim 1, it is characterised in that described fixed
Position device also includes the second control switch, and described second controls switch is connected with power supply, for controlling the charging of storage capacitor
Journey.
Drilling rod plug intelligent positioner based on electrohydraulic effect the most according to claim 2, it is characterised in that described
One control switch is integrated in the same module with the second control switch.
4. according to the arbitrary described drilling rod plug intelligent positioner based on electrohydraulic effect of claim 1-3, it is characterised in that
Described storage capacitor is made up of multiple electric capacity parallel connections.
5. according to the arbitrary described drilling rod plug intelligent positioner based on electrohydraulic effect of claim 1-3, it is characterised in that
Described power supply is lithium battery.
6. a drilling rod plug intelligent positioning system based on electrohydraulic effect, it is characterised in that include described in claim 1-5
Positioner, ripple receptor and computing unit；
The pressure wave of described ripple receptor generation after receiving positioner sets off an explosion and/or sound wave；
Described computing unit is connected with ripple receptor, calculates drilling rod Position on rubber stopper according to the pressure wave received and/or sound wave.
7. a drilling rod plug intelligent locating method based on electrohydraulic effect, it is characterised in that use described in claim 1-5
Positioner, described localization method also includes:
At ground receiver sound wave；Described sound wave discharges according to time interval by controlling electrode, causes in liquid discharge passageway
Explode and produce；And
Process acoustic signals according to the attenuation model pre-build, obtain transmission range, to determine the position of drilling rod plug.
Drilling rod plug intelligent locating method based on electrohydraulic effect the most according to claim 7, it is characterised in that described fixed
Method for position also includes:
Time difference according to sound wave pulse and sound wave transmission speed in media as well, calculate the instantaneous Bottom Runby of plug.
Drilling rod plug intelligent locating method based on electrohydraulic effect the most according to claim 8, it is characterised in that described fixed
Method for position also includes:
Total distance that plug is descending is calculated by the described instantaneous Bottom Runby of cumulative different periods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610879436.1A CN106285644A (en) | 2016-10-08 | 2016-10-08 | A kind of drilling rod plug intelligent positioner based on electrohydraulic effect, system and localization method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610879436.1A CN106285644A (en) | 2016-10-08 | 2016-10-08 | A kind of drilling rod plug intelligent positioner based on electrohydraulic effect, system and localization method |
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| CN106285644A true CN106285644A (en) | 2017-01-04 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150131A (en) * | 2018-02-12 | 2018-06-12 | 中国地质大学（北京） | A kind of pressure wave generator and cementing unit for position positioning |
| CN108590572A (en) * | 2018-02-12 | 2018-09-28 | 中国地质大学（北京） | A kind of negative pulse pressure wave generator and cementing unit |
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| US4039042A (en) * | 1976-09-17 | 1977-08-02 | Holosonics, Inc. | Acoustical sparker probe apparatus |
| US20070030762A1 (en) * | 2003-03-26 | 2007-02-08 | Schlumberger Technology Corporation | Borehole telemetry system |
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| CN204899846U (en) * | 2015-06-16 | 2015-12-23 | 中国石油化工股份有限公司 | Well cementation plug system |
| CN206071577U (en) * | 2016-10-08 | 2017-04-05 | 中国地质大学（北京） | A kind of drilling rod plug intelligent positioner and system based on electrohydraulic effect |
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| FR1472533A (en) * | 1966-03-24 | 1967-03-10 | Gen Electric | Electro-hydraulic device for geological prospecting |
| US4039042A (en) * | 1976-09-17 | 1977-08-02 | Holosonics, Inc. | Acoustical sparker probe apparatus |
| US20070030762A1 (en) * | 2003-03-26 | 2007-02-08 | Schlumberger Technology Corporation | Borehole telemetry system |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108150131A (en) * | 2018-02-12 | 2018-06-12 | 中国地质大学（北京） | A kind of pressure wave generator and cementing unit for position positioning |
| CN108590572A (en) * | 2018-02-12 | 2018-09-28 | 中国地质大学（北京） | A kind of negative pulse pressure wave generator and cementing unit |
| CN108150131B (en) * | 2018-02-12 | 2023-10-20 | 中国地质大学（北京） | Pressure wave generator for positioning and well cementation device |
| CN108590572B (en) * | 2018-02-12 | 2023-12-12 | 中国地质大学（北京） | Negative pulse pressure wave generator and well cementation device |
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Effective date of registration: 20190412 Address after: 215129 Room 201, Building No. 901, Pearl River Road, Suzhou High-tech Zone, Jiangsu Province Applicant after: Suzhou Feng Ji Electromagnetic Technology Co., Ltd. Address before: 100083 No. 29, Haidian District, Beijing, Xueyuan Road Applicant before: China University of Geosciences (Beijing) |
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