CN201874562U - Wellbore-temperature measuring device in well cementing process - Google Patents
Wellbore-temperature measuring device in well cementing process Download PDFInfo
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- CN201874562U CN201874562U CN2010206455953U CN201020645595U CN201874562U CN 201874562 U CN201874562 U CN 201874562U CN 2010206455953 U CN2010206455953 U CN 2010206455953U CN 201020645595 U CN201020645595 U CN 201020645595U CN 201874562 U CN201874562 U CN 201874562U
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Abstract
The utility model relates to a temperature measuring device, in particular to a wellbore-temperature measuring device in a well cementing process, which is characterized in that: an oil pipe is arranged in a blowout pipeline, a temperature-measuring optical fiber is arranged in the oil pipe, the end part of the temperature-measuring optical fiber is connected with a guide-shoe head, the upper end of the temperature-measuring optical fiber is connected with an optical-fiber temperature-measuring instrument through wellhead equipment, and the temperature-measuring points of the temperature-measuring optical fiber are distributed between an upper packer and a lower packer; and the length of the temperature-measuring optical fiber is 500m-4000m. The utility model provides the wellbore-temperature measuring device in the well cementing process, which is used for dynamically measuring the temperature in the well cementing process.
Description
Technical field
The utility model relates to a kind of temperature measuring equipment, the well temperature measurement mechanism in particularly a kind of process of cementing the well.
Background technology
Temperature logging can be used polytype temperature pick up, in its lower going-into-well, records the Temperature Distribution situation along well depth, in order to analysis and judgement well temperature situation.
Temperature temperature amount above-mentioned under the general situation is no problem, but for the temperature in the needs understanding well cementation process, well cementation process meeting fail temperature sensor, therefore above-mentioned temperature measurement amount does not reach the purpose of kinetic measurement temperature.
Summary of the invention
The purpose of this utility model provides the well temperature measurement mechanism in the well cementation process of the temperature in a kind of kinetic measurement well cementation process.
The purpose of this utility model is to realize like this, well temperature measurement mechanism in a kind of process of cementing the well, it is characterized in that: oil pipe is arranged in relief line, thermometric optical fiber is arranged in oil pipe, the thermometric optical fiber end is connected with the guide shoe head, thermometric optical fiber upper end is connected with optic fiber thermometer by wellhead equipment, and thermometric optical fiber temperature-measurement point is distributed between upper packer and the lower packet.
The length of described thermometric optical fiber is between 500-4000m.
The utility model has the advantages that: because thermometric optical fiber one end is connected with optic fiber thermometer, the other end connects with the guide shoe head, thermometric optical fiber is caused the place of required thermometric by the guide shoe head, optic fiber thermometer sends lasing light emitter by laser instrument to the thermometric optical fiber end, temperature between upper packer and the lower packet can make the inside of optical fibre molecule produce warm-up movement, and produces scattered light.
The scattered light that returns from optical fiber has 3 kinds of compositions:
(1) Rayleigh (Rayleigh) scattering that causes by the fluctuation of refractive index;
(2) Raman (Rarnan) scattering;
(3) Brillouin (Brillouin) scattering.
Rayleigh scattering only changes the direction of propagation, and frequency is identical with the incident light frequency, is the highest scattering composition of intensity.Raman scattering and Brillouin scattering also cause non-compliance scattering by light oscillator harmony oscillator respectively except changing the direction of propagation.Non-compliance wants the size of Jing Li Qu displacement ， Qu displacement only relevant with medium during being scattered in collision, penetrates light wavelength with the people and has nothing to do.
Though (less than 20-30dB), they are directly related with temperature much smaller than Rayleigh scattering on non-compliance Raman scattering and the Brillouin scattering intensity.The utility model is by non-compliance Raman scattering and Brillouin scattering measuring optical fiber light path variation of temperature.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing:
Fig. 1 is the utility model example structure schematic diagram.
Among the figure: 1, optic fiber thermometer; 2, thermometric optical fiber; 3, relief line; 4, guide shoe head; 5, lower packet; 6, upper packer; 7, oil pipe; 8, wellhead equipment; 9, point for measuring temperature.
The specific embodiment
As shown in Figure 1, well temperature measurement mechanism in a kind of process of cementing the well, oil pipe 7 is arranged in relief line 3, thermometric optical fiber 2 is arranged in oil pipe 7, thermometric optical fiber 2 ends are connected with guide shoe head 4, bring well cementation position, down-hole into by guide shoe head 4, there is the pipe string well cementation position, lower packet 5, upper packer 6, thermometric optical fiber 2 upper ends are connected with optic fiber thermometer 1 by wellhead equipment 8, the point for measuring temperature 9 of thermometric optical fiber 2 is distributed between upper packer 6 and the lower packet 5, optic fiber thermometer 1 sends laser by laser instrument to thermometric optical fiber 2 ends, can make the inside of optical fibre molecule produce warm-up movement to the temperature between upper packer 6 and the lower packet 5, and produce scattered light.
Optic fiber thermometer 1 is made up of frequency generator, lasing light emitter, optical device, HF frequency mixer, microprocessing unit.It is made up of three passages, measure passage (anti-Stokes and Stokes) and a reference channel for two, OFDR is in a measuring intervals of TIME, uses the HF modulator to reach the sine wave signal modulated laser of from the initial frequency to the cut-off frequency (100MHz).Be coupled in the fiber waveguide by optical device with warbled laser.Through the spectral filtering in the optical device, be converted into the signal of telecommunication through photodetector from the Raman light of the continuous scattering backlight of optical fiber each point then.The signal of measuring is after amplifying, be mixed to low-frequency spectrum scope (NFrange) then, the NF signal of equalization obtains two Raman's scattering curves backlight of each point behind Fourier transform, the Raman scattering light intensity of the amplitude of these scattering curves backlight and each point is proportional, can obtain fiber optic temperature along fiber-optical probe from two relations that obtain amplitude of measuring passages.
Fiber-optic signal processor maximum can connect the long fiber-optical probe of 4000m, the temperature of real-time continuous monitoring fiber-optical probe.Thermometric, location be accurately: temperature accuracy can reach ± 1.5 ℃, and the I of spatial resolution reaches 0.5m.
Claims (2)
1. the well temperature measurement mechanism in the process of cementing the well, it is characterized in that: oil pipe is arranged in relief line, along being distributed with thermometric optical fiber in the oil pipe, the thermometric optical fiber end is connected with the guide shoe head, thermometric optical fiber upper end is connected with optic fiber thermometer by wellhead equipment, and thermometric optical fiber temperature-measurement point is distributed between upper packer and the lower packet.
2. according to according to the well temperature measurement mechanism in the described a kind of process of cementing the well of claim 1, it is characterized in that: the length of described thermometric optical fiber is between 500-4000m.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206455953U CN201874562U (en) | 2010-12-07 | 2010-12-07 | Wellbore-temperature measuring device in well cementing process |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206455953U CN201874562U (en) | 2010-12-07 | 2010-12-07 | Wellbore-temperature measuring device in well cementing process |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201874562U true CN201874562U (en) | 2011-06-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010206455953U Expired - Fee Related CN201874562U (en) | 2010-12-07 | 2010-12-07 | Wellbore-temperature measuring device in well cementing process |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201874562U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3040507A1 (en) * | 2014-12-29 | 2016-07-06 | Shell Internationale Research Maatschappij B.V. | Method and system for tracking slugs in oilfield tubulars |
| CN109267991A (en) * | 2018-10-10 | 2019-01-25 | 北京大德广源石油技术服务有限公司 | Oil/gas well output and injection monitoring system |
| CN110552684A (en) * | 2019-09-17 | 2019-12-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | simulation environment cement channeling-preventing capability evaluation device and method |
-
2010
- 2010-12-07 CN CN2010206455953U patent/CN201874562U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3040507A1 (en) * | 2014-12-29 | 2016-07-06 | Shell Internationale Research Maatschappij B.V. | Method and system for tracking slugs in oilfield tubulars |
| CN109267991A (en) * | 2018-10-10 | 2019-01-25 | 北京大德广源石油技术服务有限公司 | Oil/gas well output and injection monitoring system |
| CN110552684A (en) * | 2019-09-17 | 2019-12-10 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | simulation environment cement channeling-preventing capability evaluation device and method |
| CN110552684B (en) * | 2019-09-17 | 2024-05-14 | 中国石油天然气集团有限公司 | Simulation environment cement channeling-preventing capability evaluation device and method |
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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: 20110622 Termination date: 20171207 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |