CN202442691U - Coiled tubing length laser Doppler on-line measuring system - Google Patents
Coiled tubing length laser Doppler on-line measuring system Download PDFInfo
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- CN202442691U CN202442691U CN2012200067309U CN201220006730U CN202442691U CN 202442691 U CN202442691 U CN 202442691U CN 2012200067309 U CN2012200067309 U CN 2012200067309U CN 201220006730 U CN201220006730 U CN 201220006730U CN 202442691 U CN202442691 U CN 202442691U
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- coiled tubing
- line measurement
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Abstract
A coiled tubing length laser Doppler on-line measuring system is provided. The system is provided to mainly solve problems of the prior art that a device for measuring the oil tube lowering length can not be used for solving accumulative errors and realizing continuous on-line measurement. The system is characterized in that the system comprises a semiconductor laser, a branching device, branching and converging lenses, a diffusion light converging lens, an aperture diaphragm, a photoelectric receiver, a filter and a signal amplifier; the semiconductor laser is used for outputting a laser beam to the branching device through a single-mode fiber, two beams of lasers divided by the branching device are transmitted by an optical fiber and respectively ejected out by the two branching and converging lenses, an ejection end is used as an oil tube measuring optical signal output end; the diffusion light converging lens, the aperture diaphragm and the photoelectric receiver are successively fixed along the reversal direction of the oil tube measuring optical signal output end; and signals output by the photoelectric receiver are output to a data acquisition system after being filtered and amplified. In the system, as the laser Doppler principle is used to measure, accumulative errors can be avoided and on-line measuring can be realized.
Description
Technical field
The utility model relates to a kind of device that oil pipe is transferred the degree of depth that is applied to be used in the field produces field testing.
Background technology
In process of oil production, the measurement of the tubing length of going into the well is to timely grasp manufacturing schedule, adjustment production technology, and accurately to locate oil well pump, perforating apparatus etc. all be crucial in the position of down-hole, and is especially indispensable especially to continuous pipe bit well.Since oil-field development, length how accurately to measure the oil pipe of going into the well is the problem that people generally are concerned about always, has also carried out many research work.Up to the present mainly containing single tube measures and two kinds of schemes of continuous pipe measurement.Single tube is measured, and promptly is the length of measuring every oil pipe on the ground, through the method for accumulative total confirm the to go into the well length of oil pipe, mainly contains two kinds of " tape measuring method " and " laser optical methods " again.Not only itself there are various shortcomings in these two kinds of methods, and can't solve the problem of cumulative errors, can not realize continuous on-line measurement.Pipe is measured continuously, promptly is certain measurement mechanism is installed on derrick, with it tubing length of going into the well is carried out on-line measurement.Because all there is variety of issue in these on-line measurement devices, all fail effectively to be applied, and therefore, up to the present, still mainly adopt conventional artificial to draw the method for tape measure to measure tubing length on the oil field.Obviously, this existing technical scheme is difficult to satisfy that the oil field is efficient, the production needs of stable yields.
Summary of the invention
The technical matters of mentioning in order to solve in the background technology; The utility model provides a kind of coiled tubing length laser-Doppler on-line measurement system; This kind system utilizes laser doppler to measure the instantaneous velocity of motion oil pipe; Not only can avoid cumulative errors but also can realize on-line measurement, have stronger practicality.
The technical scheme of the utility model is: this kind coiled tubing length laser-Doppler on-line measurement system; Comprise industrial control computer; It is characterized in that: said on-line measurement system also comprises semiconductor laser LD, shunt, two shunt convergent lenses 1,2, scattered light convergent lens, aperture, photelectric receiver, wave filter and signal amplifier; Wherein, said semiconductor laser through the single-mode fiber outgoing laser beam to shunt, the two bundle laser that are divided into by said shunt by Optical Fiber Transmission after, respectively through two along separate routes convergent lenses penetrate, said ejecting end is as oil pipe measuring light signal output part; Opposite direction along aforementioned oil pipe measuring light signal output part is fixed with scattered light convergent lens, aperture and photelectric receiver successively; The output terminal of said photelectric receiver is connected to the signal input part of wave filter; The signal output part of said wave filter is connected to the positive input terminal of signal amplifier; After the A/D converter conversion in the said industrial control computer of amplifying signal process of said signal amplifier output, be input to the data acquisition system (DAS) in the computing machine.
During concrete the realization, said photelectric receiver adopts 71D101-CR131 type photomultiplier, configuration 71P1100 high voltage regulated power supply.
The utlity model has following beneficial effect: this kind coiled tubing length laser-Doppler on-line measurement system is when using; When oil pipe passes through measurement zone; Scattering takes place on the oil pipe surface of motion in light beam, and this scattered light has comprised doppler shifted signal, and no matter detector is put wherein; As long as the angle of two bundle incident raies is constant, the Doppler shift that obtains all is identical.Because optical maser wavelength is known; As long as can confirm the angle of Doppler shift and two light beams, just can calculate the movement velocity v of object, like this; Can calculate the length that oil pipe is gone into the well through summing mode; Promptly the signal of gathering is done 1024 Fast Fourier Transform (FFT) and just can obtain Doppler shift, and then obtain the instantaneous velocity of oil pipe, just can calculate the total length that oil pipe has been transferred through the software in the computing machine again.Therefore, utilize this kind measuring system, not only can avoid cumulative errors but also can realize on-line measurement, have stronger practicality.In addition, in this case, adopt aperture can prevent that the parasitic light beyond measured zone edge or the measured zone from getting into photomultiplier, obtains measurement effect preferably.
Description of drawings:
Fig. 1 is the structural representation of the utility model.
Embodiment:
Below in conjunction with accompanying drawing the utility model is described further:
By shown in Figure 1; This kind coiled tubing length laser-Doppler on-line measurement system; Comprise an industrial control computer; In addition, said on-line measurement system also comprises semiconductor laser, shunt, two shunt convergent lenses, scattered light convergent lens, aperture, photelectric receiver, wave filter and signal amplifiers; Wherein, said semiconductor laser through the single-mode fiber outgoing laser beam to shunt, the two bundle laser that are divided into by said shunt by Optical Fiber Transmission after, respectively through two along separate routes convergent lenses penetrate, said ejecting end is as oil pipe measuring light signal output part; Opposite direction along aforementioned oil pipe measuring light signal output part is fixed with scattered light convergent lens, aperture and photelectric receiver successively; The output terminal of said photelectric receiver is connected to the signal input part of wave filter; The signal output part of said wave filter is connected to the positive input terminal of signal amplifier; After the A/D converter conversion in the said industrial control computer of amplifying signal process of said signal amplifier output, be input to the data acquisition system (DAS) in the computing machine.
During concrete the realization, said photelectric receiver adopts 71D101-CR131 type photomultiplier, configuration 71P1100 high voltage regulated power supply.Utilize the semiconductor laser elements of K66S03F-0.04W type single-mode fiber output coaxial packaging; It can launch stable single-mode laser continuously;
=660 nm, output power 40 mW.This assembly has energy stabilization, volume is little, simple in structure, power is high, low cost and other advantages, can adapt to the on-the-spot rugged surroundings of field produces.
When using this kind measuring system, the light signal that photomultiplier will contain Doppler shift converts electric signal to, earlier through low-pass filter; Eliminate high frequency interference, improve its signal to noise ratio (S/N ratio), pass through pre-amplification circuit again; Signal is amplified to certain amplitude, sends into computing machine through data acquisition system (DAS) then.The Fast Fourier Transform (FFT) of the signal of gathering being done at 1024 just can obtain Doppler shift, and then obtains the instantaneous velocity of oil pipe, the total length of transferring through the computed in software oil pipe again
L
Native system may be summarized to be by optical measurement part, opto-electronic conversion and four parts such as signal Processing, computing machine and photoswitch to be formed; Previous section be easy to be integrated into a volumes little, be adapted to all-environment instrument; The high precision of Doppler range rate measurement in addition; Therefore after native system being installed on situ of drilling well, have simple installation, adaptability is strong, antijamming capability is strong, and characteristics such as measuring accuracy height; Simultaneously, can also solve oil pipe and in transferring process, forbidden to influence the problem of total length measuring accuracy owing to overlapping buckle.
Claims (2)
1. coiled tubing length laser-Doppler on-line measurement system; Comprise industrial control computer, it is characterized in that: said on-line measurement system also comprises semiconductor laser, shunt, two shunt convergent lenses, scattered light convergent lens, aperture, photelectric receiver, wave filter and signal amplifiers; Wherein, said semiconductor laser through the single-mode fiber outgoing laser beam to shunt, the two bundle laser that are divided into by said shunt by Optical Fiber Transmission after, respectively through two along separate routes convergent lenses penetrate, said ejecting end is as oil pipe measuring light signal output part; Opposite direction along aforementioned oil pipe measuring light signal output part is fixed with scattered light convergent lens, aperture and photelectric receiver successively; The output terminal of said photelectric receiver is connected to the signal input part of wave filter; The signal output part of said wave filter is connected to the positive input terminal of signal amplifier; After the A/D converter conversion in the said industrial control computer of amplifying signal process of said signal amplifier output, be input to the data acquisition system (DAS) in the computing machine.
2. coiled tubing length laser-Doppler on-line measurement system according to claim 1 is characterized in that: said photelectric receiver adopts 71D101-CR131 type photomultiplier, configuration 71P1100 high voltage regulated power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200067309U CN202442691U (en) | 2012-01-10 | 2012-01-10 | Coiled tubing length laser Doppler on-line measuring system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012200067309U CN202442691U (en) | 2012-01-10 | 2012-01-10 | Coiled tubing length laser Doppler on-line measuring system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202442691U true CN202442691U (en) | 2012-09-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012200067309U Expired - Fee Related CN202442691U (en) | 2012-01-10 | 2012-01-10 | Coiled tubing length laser Doppler on-line measuring system |
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| CN (1) | CN202442691U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225861A (en) * | 2016-10-13 | 2016-12-14 | 南京高华科技股份有限公司 | The determinator of a kind of fluid flow and airborne vehicle fuel quantity assay method |
| CN107063105A (en) * | 2016-12-27 | 2017-08-18 | 北京化工大学 | Coiled tubing length-measuring appliance |
| CN109138972A (en) * | 2018-10-16 | 2019-01-04 | 安徽理工大学 | A kind of coal mine gas borer drill rod feeding depth measuring system based on laser doppler |
-
2012
- 2012-01-10 CN CN2012200067309U patent/CN202442691U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106225861A (en) * | 2016-10-13 | 2016-12-14 | 南京高华科技股份有限公司 | The determinator of a kind of fluid flow and airborne vehicle fuel quantity assay method |
| CN107063105A (en) * | 2016-12-27 | 2017-08-18 | 北京化工大学 | Coiled tubing length-measuring appliance |
| CN109138972A (en) * | 2018-10-16 | 2019-01-04 | 安徽理工大学 | A kind of coal mine gas borer drill rod feeding depth measuring system based on laser doppler |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120919 Termination date: 20150110 |
|
| EXPY | Termination of patent right or utility model |