CN204457739U - A kind of injection well pipe column forces testing device - Google Patents
A kind of injection well pipe column forces testing device Download PDFInfo
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- CN204457739U CN204457739U CN201420833317.9U CN201420833317U CN204457739U CN 204457739 U CN204457739 U CN 204457739U CN 201420833317 U CN201420833317 U CN 201420833317U CN 204457739 U CN204457739 U CN 204457739U
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- inner core
- pipe column
- injection well
- well pipe
- testing device
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- 239000007924 injection Substances 0.000 title claims abstract description 71
- 238000012360 testing method Methods 0.000 title claims abstract description 70
- 239000011888 foil Substances 0.000 claims abstract description 40
- 238000000034 method Methods 0.000 claims abstract description 22
- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000008569 process Effects 0.000 claims abstract description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 40
- 238000006243 chemical reaction Methods 0.000 claims description 10
- 238000013500 data storage Methods 0.000 claims description 5
- 238000005259 measurement Methods 0.000 claims description 4
- 239000012530 fluid Substances 0.000 claims description 3
- 230000008859 change Effects 0.000 abstract description 4
- 238000004519 manufacturing process Methods 0.000 abstract description 2
- 238000010276 construction Methods 0.000 description 6
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- WHXSMMKQMYFTQS-UHFFFAOYSA-N Lithium Chemical compound [Li] WHXSMMKQMYFTQS-UHFFFAOYSA-N 0.000 description 1
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- 229910052744 lithium Inorganic materials 0.000 description 1
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- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
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- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The utility model discloses a kind of injection well pipe column forces testing device, belong to technical field of oil production engineering.Injection well pipe column forces testing device comprises: inner core, urceolus and union, and described inner core and described urceolus two ends seal, and the annular space region of described inner core and described urceolus is provided with and seals electric cabin; Be threaded connection between described inner core and union and form annular sealing cavity with O RunddichtringO; Be provided with at least one in the electric cabin of described sealing for measuring foil gauge and the data acquisition circuit of described inner core change in length, described foil gauge sticks on described inner core.Adopt a kind of like this injection well pipe column forces testing device of structure effectively can improve high angle hole in the injecting process to the reliability of tubing string axially loaded test and precision.
Description
Technical field
The utility model relates to technical field of oil production engineering, particularly a kind of injection well pipe column forces testing device.
Background technology
Along with the domestic research and development to high angle hole exploitation correlation technique and the downhole tool supporting with it deepen continuously, adopting water injection string to carry out seperated layer water injection to high angle hole has become the important technology scheme realizing high and stable yields.In China's high angle hole seperated layer water injection development process, due to high angle hole self hole condition and casing programme relative complex, in water injection well, high temperature and high pressure environment and water injection pressure produce the impact of larger fluctuation, make tubing string distortion in the operation stages such as water injection string setting in waterflooding extraction process, water filling and well-flushing larger, make the weak effect of the seperated layer water injection of water injection well, make it produce serious influence to China's oil field subsequent development.
High angle hole carries out in the injecting process at employing water injection string, and the stressed meeting of tubing string in pit shaft is subject to the combined influence of the many factors such as deadweight, frictional force, viscous frictional resistance, wellbore pressure, stressed very complicated.Meanwhile, because the uncertainty on high angle hole stratum is different with High angle well type and each section of curvature, water injection string is stressed very complicated with distortion in down-hole, and the reliability of water injection string mechanical analysis theoretical research needs to rely on field test data to verify.Therefore, develop and have studied a kind of injection well pipe column forces testing device and forces testing method, for the load test of high angle hole water injection string, to survey the stressed situation of change of down-hole string in water injection work process.
Existing forces testing device is still difficult to realize while the reliability meeting forces testing and precision, guarantee test jobs time and application life, and effectively cannot overcome underground liquid in pit shaft, complicated construction technique and water filling to the impact of testing element, construction method is not easy to field popularization application.
Utility model content
In order to improve to the reliability of water injection string forces testing and precision in high angle hole the injecting process, the utility model embodiment provides a kind of injection well pipe column forces testing device.Described technical scheme is as follows:
The utility model embodiment provides a kind of injection well pipe column forces testing device, comprise: inner core, urceolus and union, described inner core and described urceolus two ends seal, the annular space region of described inner core and described urceolus is provided with and seals electric cabin, is threaded connection and forms annular sealing cavity with O RunddichtringO between inner core and union;
At least one is provided with for measuring foil gauge and the data acquisition circuit of described inner core STRESS VARIATION in the electric cabin of described sealing, described foil gauge sticks on the sealing electric cabin inner core wall above annular sealing cavity in scope, press the impact that foil gauge is measured in producing with tubing string inner fluid in isolated water filling, pressure testing process, ensure that foil gauge is to the Measurement accuracy of water injection string axial stress.
Further, circumferential at interval of foil gauge described in 90 ° of uniform adhesion 4 groups at the middle part of described inner core;
Each is organized described foil gauge and comprises the one piece of horizontal strain sheet and one piece of vertical strain sheet that are disposed adjacent, the length direction of described horizontal strain sheet is parallel with the length direction of described inner core, and the length direction of described vertical strain sheet is vertical with the length direction of described inner core.
Further, foil gauge described in 4 groups forms strain bridge;
Described data acquisition circuit comprises signal and amplifies and filter circuit, analog to digital conversion circuit, governor circuit and data storage circuitry;
Described strain bridge amplifies with described signal and filter circuit is electrically connected, described signal amplifies and filter circuit is also electrically connected with analog-digital conversion circuit as described, analog-digital conversion circuit as described is also electrically connected with described governor circuit, and described governor circuit is also electrically connected with described memory circuit.
In addition, the battery for powering to described data acquisition circuit is also provided with in the electric cabin of described sealing.
Further, described injection well pipe column forces testing device also comprises for reading and showing the data fetch device of the survey data be stored in described data acquisition circuit.
The injection well pipe column forces testing device that the utility model embodiment provides, this testing arrangement utilizes foil gauge to measure tension variations after under tension effect on inner core.This device also has strong sealing, effectively can overcome underground liquid in pit shaft, complicated construction technique and water filling to the impact of testing element.
Accompanying drawing explanation
In order to be illustrated more clearly in the technical scheme in the utility model embodiment, below the accompanying drawing used required in describing embodiment is briefly described, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the structural representation of a kind of injection well pipe column forces testing device that the utility model embodiment provides;
Fig. 2 is strain gauge adhesion and arrange schematic diagram in a kind of injection well pipe column forces testing device of providing of the utility model embodiment;
Fig. 3 is the structural representation of data acquisition circuit in a kind of injection well pipe column forces testing device of providing of the utility model embodiment;
Fig. 4 is the schematic flow sheet of a kind of injection well pipe column forces testing method that the utility model embodiment provides.
Reference numeral:
1-inner core, 2-urceolus, 3-seal electric cabin, 4-foil gauge, 5-battery, 6-strain bridge, the amplification of 7-signal and filter circuit, 8-analog to digital conversion circuit, 9-governor circuit, 10-data storage circuitry, 11-data acquisition circuit, 12-data fetch device, 13-union.
Detailed description of the invention
For making the purpose of this utility model, technical scheme and advantage clearly, below in conjunction with accompanying drawing, the utility model embodiment is described in further detail.
The injection well pipe column forces testing device that the utility model embodiment provides, as shown in Figure 1, comprise: inner core 1, urceolus 2 and union 13, this inner core 1 seals with urceolus 2 two ends, inner core 1 is provided with the annular space region of urceolus 2 and seals electric cabin 3, is threaded connection and forms annular sealing cavity with O RunddichtringO between inner core 1 and union 13.
Seal in electric cabin 3 and be provided with at least one for measuring foil gauge 4 and the data acquisition circuit 11 of inner core 1 STRESS VARIATION, foil gauge 4 sticks on the sealing electric cabin 3 inner core wall above annular sealing cavity in scope, press the impact that foil gauge 4 is measured in producing with tubing string inner fluid in isolated water filling, pressure testing process, ensure the Measurement accuracy of foil gauge 4 pairs of water injection string axial stresses.
The injection well pipe column forces testing device that the utility model embodiment provides, this testing arrangement utilizes foil gauge to measure tension variations after under tension effect on inner core, substantially increase the reliability to water injection string forces testing and precision, this device has strong sealing, effectively can overcome underground liquid in pit shaft, complicated construction technique and water filling to the impact of testing element.
Concrete, the actual bonding method of foil gauge can as shown in Figure 2, in the middle part of inner core 1 circumference at interval of 90 ° of uniform adhesion, 4 groups of foil gauges 4.
Wherein, each group foil gauge 4 comprises the one piece of horizontal strain sheet and one piece of vertical strain sheet that are disposed adjacent, and the length direction of horizontal strain sheet is parallel with the length direction of inner core 1, and the length direction of vertical strain sheet is vertical with the length direction of inner core 1.Adopt so a kind of foil gauge set-up mode, effectively can eliminate the impact because tubing string reverses or bends and cause test result, further increase reliability and the precision of forces testing.
Further, as shown in Figure 3,4 groups of foil gauges 4 can form strain bridge 6.
Data acquisition circuit 11 specifically can comprise signal and amplify and filter circuit 7, analog to digital conversion circuit 8, governor circuit 9 and data storage circuitry 10.
Wherein, strain bridge 6 amplifies with signal and filter circuit 7 is electrically connected, signal amplifies and filter circuit 7 is also electrically connected with analog to digital conversion circuit 8, and modulus (A/D) change-over circuit 8 is also electrically connected with governor circuit 9, and governor circuit 9 is also electrically connected with memory circuit 10.
Concrete, in the process of practical application, strain bridge 6 export faint STRESS VARIATION amount signal through signal amplify and filter circuit 7 nurse one's health export be standard voltage signal, control analog-to-digital D/A converting circuit 8 pairs of signals by single-chip microcomputer governor circuit 9 again to process, store eventually through data storage circuitry 10.
In addition, as shown in Figure 3, the battery 5 that can also be provided with for powering to data acquisition circuit 11 is sealed in electric cabin 3.In the utility model embodiment, High Temperature Lithium Cell group can be adopted as battery 5, so can ensure the long-time power supply of instrument in down-hole.
Further, as shown in Figure 3, injection well pipe column forces testing device can also comprise for reading and showing the data fetch device 12 of the survey data be stored in data acquisition circuit 11.
Concrete, injection well pipe column forces testing device is placed in down-hole for a long time, first according to constructure scheme, data acquisition program is downloaded in single-chip microcomputer governor circuit 9 before going into the well, then will be connected on tested tubing string by injection well pipe column forces testing device, start instrument and start working.Instrument, in company with water injection string G.I.H, enters, steady operation under tubing string, and tubing string trips out in process and measures the capture program of the axial load of water injection string according to setting and store.After tubing string trips out, the survey data of injection well pipe column forces testing device can be stored in by data fetch device 12 reading displayed being arranged in ground.
The injection well pipe column forces testing method that the utility model embodiment provides, as shown in Figure 4, the method adopts injection well pipe column forces testing device as above, and described method comprises:
Step 401, when water injection string is subject to axial load, be arranged on the change in length that at least one foil gauge on the inner core of water injection string measures inner core.
Step 402, data acquisition circuit get the axial load stress data suffered by water injection string according to the change in length of the inner core measured.
Step 403, data fetch device read and show the axial load stress data suffered by water injection string that data acquisition circuit gets.
The injection well pipe column forces testing method that the utility model embodiment provides, adopt injection well pipe column forces testing device, this testing arrangement utilizes foil gauge to measure tension variations after under tension effect on inner core, this device has strong sealing, effectively can overcome underground liquid in pit shaft, complicated construction technique and water filling to the impact of testing element.
Wherein, the concrete structure of injection well pipe column forces testing device and function have done detailed description in the aforementioned embodiment, do not repeat herein.
Concrete, referring to figs. 1 through Fig. 3, in the process that reality uses, the concrete grammar that operating personnel adopt injection well pipe column forces testing device to carry out forces testing can be realized by following steps:
Step 1, pastes the inner core 1 of foil gauge 4 at injection well pipe column forces testing device.The bonding method of foil gauge 4 is for be evenly arranged 4 groups of foil gauges 4 along inner core 1 circumference at interval of 90 °, and often organize foil gauge 4 and be made up of horizontal and vertical two pieces of foil gauges, 4 groups of foil gauges 4 circumferentially form full-bridge strain measurement circuit.
Step 2, installation data Acquisition Circuit 11 and battery 5.Be pasted onto after inner core 1 until foil gauge 4, data acquisition circuit plate and battery pack be arranged in the electric cabin 3 of ring packing of formation between urceolus 2 and inner core 1, sealed by O type circle between urceolus 2 and inner core 1.By screw thread mounting pipe joint 13 in inner core 1 endoporus.Union 13 one end is by O type circle, and one end is sealed by screw thread, forms sealed cavity.Foil gauge 4 paste position in sealed cavity position alignment inner core 1.
Step 3, preparation before injection well pipe column forces testing device starts.First data acquisition program downloads in single-chip microcomputer governor circuit 9 according to constructure scheme before going into the well by water injection string, is then connected on tested tubing string by forces testing instrument short circuit, and forces testing instrument is in company with water injection string G.I.H.
Step 4, injection well pipe column forces testing device normally works.When injection well pipe column forces testing device normally works, axial load suffered by water injection string is measured by strain bridge 6, strain bridge 6 export weak voltage signals through signal amplify and filter circuit 7 carry out conditioning output be standard voltage signal, single-chip microcomputer governor circuit 9 controls analog to digital conversion circuit 8 pairs of standard voltage signals and carries out collection acquisition water injection string axial load data, and stores.
Step 5, injection well pipe column forces testing device trips out.After water injection string trips out, be stored in the survey data in injection well pipe column forces testing device by ground data reading device 12 reading displayed.
The injection well pipe column forces testing method that the utility model adopts, mainly for be the forces testing device of water injection string, the advantage of this device is according to axial push-pull stress-strain test philosophy, foil gauge is arranged along the surperficial hoop of inner core 1 and axial direction, lateral force and eccentric load can be reduced like this on the impact of test result as far as possible.
On the other hand, this testing arrangement utilizes foil gauge 4 to measure by the pulling force on inner core 2 after pulling force, substantially increases the reliability to water injection string forces testing and precision.This device also has strong sealing, and can effectively overcome underground liquid in pit shaft, complicated construction technique and water filling to the impact of testing element.
One of ordinary skill in the art will appreciate that all or part of step realizing above-described embodiment can have been come by hardware, the hardware that also can carry out instruction relevant by program completes, described program can be stored in a kind of computer-readable recording medium, the above-mentioned storage medium mentioned can be read-only storage, disk or CD etc.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (5)
1. an injection well pipe column forces testing device, it is characterized in that, comprise: inner core, urceolus and union, described inner core and described urceolus two ends seal, the annular space region of described inner core and urceolus is provided with and seals electric cabin, is threaded connection and forms annular sealing cavity with O RunddichtringO between inner core and union;
At least one is provided with for measuring foil gauge and the data acquisition circuit of described inner core STRESS VARIATION in the electric cabin of described sealing, described foil gauge sticks on the sealing electric cabin inner core wall above annular sealing cavity in scope, press the impact that foil gauge is measured in producing with tubing string inner fluid in isolated water filling, pressure testing process, ensure that foil gauge is to the Measurement accuracy of water injection string axial stress.
2. injection well pipe column forces testing device according to claim 1, is characterized in that,
In the middle part of described inner core circumference at interval of foil gauge described in 90 ° of uniform adhesion 4 groups;
Each is organized described foil gauge and comprises the one piece of horizontal strain sheet and one piece of vertical strain sheet that are disposed adjacent, the length direction of described horizontal strain sheet is parallel with the length direction of described inner core, and the length direction of described vertical strain sheet is vertical with the length direction of described inner core.
3. injection well pipe column forces testing device according to claim 2, is characterized in that, foil gauge described in 4 groups forms strain bridge;
Described data acquisition circuit comprises signal and amplifies and filter circuit, analog to digital conversion circuit, governor circuit and data storage circuitry;
Described strain bridge amplifies with described signal and filter circuit is electrically connected, described signal amplifies and filter circuit is also electrically connected with analog-digital conversion circuit as described, analog-digital conversion circuit as described is also electrically connected with described governor circuit, and described governor circuit is also electrically connected with described memory circuit.
4. injection well pipe column forces testing device according to claim 1, is characterized in that, is also provided with the battery for powering to described data acquisition circuit in the electric cabin of described sealing.
5. injection well pipe column forces testing device according to claim 1, is characterized in that, described injection well pipe column forces testing device also comprises for reading and showing the data fetch device of the survey data be stored in described data acquisition circuit.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420833317.9U CN204457739U (en) | 2014-12-24 | 2014-12-24 | A kind of injection well pipe column forces testing device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420833317.9U CN204457739U (en) | 2014-12-24 | 2014-12-24 | A kind of injection well pipe column forces testing device |
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| CN204457739U true CN204457739U (en) | 2015-07-08 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781526A (en) * | 2014-12-24 | 2016-07-20 | 中国石油天然气股份有限公司 | Stress testing device and stress testing method for pipe column of water injection well |
| CN113818865A (en) * | 2021-09-18 | 2021-12-21 | 西安洛科电子科技股份有限公司 | Intelligent layered water injection testing device and using method thereof |
-
2014
- 2014-12-24 CN CN201420833317.9U patent/CN204457739U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105781526A (en) * | 2014-12-24 | 2016-07-20 | 中国石油天然气股份有限公司 | Stress testing device and stress testing method for pipe column of water injection well |
| CN113818865A (en) * | 2021-09-18 | 2021-12-21 | 西安洛科电子科技股份有限公司 | Intelligent layered water injection testing device and using method thereof |
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Granted publication date: 20150708 |