CN202599815U - System for monitoring water content around oil and gas pipeline in frozen soil area - Google Patents
System for monitoring water content around oil and gas pipeline in frozen soil area Download PDFInfo
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- CN202599815U CN202599815U CN 201220197101 CN201220197101U CN202599815U CN 202599815 U CN202599815 U CN 202599815U CN 201220197101 CN201220197101 CN 201220197101 CN 201220197101 U CN201220197101 U CN 201220197101U CN 202599815 U CN202599815 U CN 202599815U
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Abstract
The utility model relates to a water content monitoring system around frozen soil district oil gas pipeline based on fiber grating sensing technology. Install fiber grating water content sensor group around oil gas pipeline (2) in the frozen soil region, all fiber grating sensors are established ties the butt fusion, draw in the monitoring station by optical cable (12), optical cable (12) are connected with photoswitch (13), photoswitch (13) are connected with fiber grating demodulation appearance (14), fiber grating demodulation appearance (14) are connected with lower computer (15), data after lower computer (15) preliminary treatment pass through satellite communication module (16) and transmit to low orbit satellite (17), low orbit satellite (17) are with data transfer to satellite communication module (18), satellite communication module (18) are with received data transmission to host computer (19) carry out analysis and processing. The utility model discloses the precision is high, stability is high, low cost.
Description
Technical field
The utility model is a water cut monitoring system around a kind of permafrost region oil and gas pipes based on fiber grating sensing technology, and measurement, other type that relates to measurement of length, temperature do not comprise measurement, general control system and piping system technical field.
Background technology
Frozen soil is a kind of special great soil group, and temperature is subzero temperature or zero temperature, and contains the soil of ice, is called frozen soil.By the length of native frozen state retention time, frozen soil generally can be divided into frozen soil (several hours to first quarter moon), seasonal frozen ground (first quarter moon is to the several months) and ever frost (more than 2 years) in short-term again.China's frozen soil is grown very much, and the ever frost area is about 2,110,000 square kilometres, accounts for 23% of China's territory total area, accounts for the 3rd in the world, mainly is distributed in Qinghai-Tibet Platean, the large and small Xing'an Mountains of western high mountain and northeast; The frost zone area is about 5,140,000 square kilometres, accounts for 53.5% of territory total area.Wherein, middle degree of depth seasonal frozen ground (＞1m) account for 1/3 of area, mainly be distributed in ground such as three provinces in the northeast of China, the Inner Mongol, Gansu, Ningxia, the north, Xinjiang, Qinghai and Chuan Xi.
Developed country's oil pipeline construction has more than 100 year history, and a lot of frozen soil areas are contained has huge hydrocarbon resources, and correspondingly the oil and gas pipes engineering design and construction becomes the up-to-date challenge of these regional petroleum industries.Since the sixties in 20th century, large diameter pipeline begins the north, leading North America and Siberia Permafrost Area oil gas field transports market.During the Second World War, gram is exerted (Canol) pipeline and is transported the Alaska State Fairbanks city (Fairbanks) of crude oil to the U.S. from Canadian Luo Man well; The oil pipe that caliber in 1956 is 203mm is built successfully to the Fei Bankesi city in this city of glycolylurea (Haines) from the Alaska State; The seventies in 20th century is early stage, and USSR (Union of Soviet Socialist Republics) ever frost district has oil pipeline; 1977; Long 1280km, diameter are that the oil pipeline of 1220mm is transported to the natural warm water port Wa Erdisi (Valdez) in south, Alaska continuously with the crude oil in U.S. Alaska State north slope low temperature ever frost district, then oil tanker with crude oil transportation to the California.20th century the mid-80; Economize the environment temperature pipeline of northern our horse (Zama) lake, long 869km, bore 30.5cm from Canadian Luo Man well to Canadian Ahlport (Alberta) and accomplish laying on time, the Luo Man well conduit is the oil pipeline that Canadian ever frost district article one is buried underground fully.These pipelines all receive the threat even the destruction of permafrost region frost heave thaw collapse disaster during runing.Wherein, gram is exerted (Canol) pipeline and was being brought into operation back preceding 9 months, and pipeline has 700x 10 along the line approximately
4The L crude oil leakage.12700m on the Mackenzie riverbank
3Storage tank farm break, most of oil storage flows in the river.After Japan surrendered in 1945, this pipeline was removed soon; The Luo Man well conduit is along the line by way of discontinuous ever frost; Construction and frost heave and the thaw collapse problem of meeting in service; Through reaching the monitoring in 17 years; Find that pipeline ever frost along the line continues to melt and sedimentation causes thaw depth to reach 3-5m (gyittja) or 5-7m (coarse particle mineral soil), and significant land subsidence.
The long oil and gas pipeline of article one that China builds in Permafrost Area, i.e. Golmud-Lhasa oil pipeline (be called for short lattice backguy), the lattice backguy was constructed by the Chinese People's Liberation Army in 1972; Basically built up in 1977, and reached 1076km, caliber 159mm; Thickness of pipe 6mm, investment 2.3x108 unit.Lattice backguy engineering is built and is safeguarded very difficulty, and the spanning of river is 108 completely, road crossing 123 places, and more than 900 kilometer pipeline (highest point height above sea level 5200m) more than height above sea level 4000m, 560km is positioned at the ever frost district, and freezing period, reach 8 months.The lattice backguy is since operation in 1977, and frost heave, thaw collapse problem have caused repeatedly " revealing pipe " phenomenon.
Sino-Russian crude oil pipeline reaches the grand celebration terminal in the south North gets boundary line, Sino-Russian Heilungkiang, Mo River initial station, and more than 960 kilometer of total length by way of two provinces, 12 counties and districts in five cities, passed through 440 kilometers virgin forests, 11 big-and-middle-sized rivers, 5 wilderness areas.High south, pipeline physical features along the line north is low, and northern topographic relief is bigger, is Daxing'an Mountainrange low mountain, hills and river valley geomorgy along the line, and the south is a song-Nen plain, and landform is smooth open; Mo River-about 460km of Jagdaqi section is mountain area, forest zone, ever frost district, and the about 314km of ever frost total length wherein ices, ices more ever frost 209km less, full ice, rich ice ever frost 62km, frozen soil marsh 43km.Pipeline is faced with serious frost heave thaw collapse disaster and threatens.
To the frost heave thaw collapse problem that pipeline faces, unit of operation has taked positive counter-measure both at home and abroad.After the Luo Man well conduit was gone into operation in 1985; The daily monitoring plan of pipeline is being implemented as the important component part of project operation always; Except that weekly aircraft aerial surveillance; Also a large amount of measuring instruments has been installed with the record service data along the line, and, has been carried out an on-site land survey when promptly pipe sedimentation is maximum with the record of the on-site inspection along the line of completion pipeline, instrument data and the work such as site assessment in location, landslide in annual September at pipeline.After 1989; The Luo Man well conduit adopts in-pipeline detector to carry out annual interior detection; To assess motion of the unstable soil body and the influence degree of otherness thaw collapse, along with the continuous accumulation and the expansion of detection data, for the assessment of pipe technology performance provides good basis to pipeline.Norman wells pipeline is the oil and gas pipes that article one is embedded in Canadian northern ever frost district; Be in charge of and run by adding by Enbridge company; Under the requirement of various regulations rules; Set up that plan is careful, the monitoring system of strong operability, comprising the monitoring of frozen soil thaw collapse, pipeline detection, warpage arch detect, wrinkle detect, side slope detects, wood chip stratiform condition detects and the content of seven aspects such as temperature monitoring.The variation of frozen soil is also monitored in lattice trombone slide road through regular line walking, setting pressure, temperature sensor etc.
Though pipeline unit of operation has taked the frost heave thaw collapse disaster of active measure reply permafrost region both at home and abroad; But because the formation mechanism of frost heave thaw collapse disaster is very complicated; And the frozen soil characteristic of different regions has nothing in common with each other; Not seeing both at home and abroad at present has ripe monitoring technology, can monitor the influence of frost heave thaw collapse disaster to pipeline.
The utility model content
The purpose of the utility model is design a kind of high precision, high stability, cheaply based on water cut monitoring system around the permafrost region oil and gas pipes of fiber grating sensing technology.
The utility model provides a kind of based on water cut monitoring system around the permafrost region oil and gas pipes of fiber grating sensing technology.System adopts fiber grating sensing technology, water cut around the oil and gas pipes under frozen soil and the influence thereof is monitored, and made up monitoring system, has realized real-time automatic collecting, remote transmission and the analysis automatically of data.
The utility model propose based on water cut monitoring system around the permafrost region oil and gas pipes of fiber grating sensing technology, adopt fiber grating water content sensor real time on-line monitoring.
The water cut monitoring system is as shown in Figure 1 around this permafrost region oil and gas pipes, and this system is divided into on-site data gathering transmission subsystem and data analysis display subsystem, specifically comprises fiber grating water content sensor group, field monitoring station, remote monitoring center.
The overall formation of water cut monitoring system is as shown in Figure 1 around the permafrost region oil and gas pipes.The water content sensor group of a plurality of fiber grating water content sensor a6, fiber grating water content sensor b7, fiber grating water content sensor c8, fiber grating water content sensor d9 composition is installed around the oil and gas pipes 2 of permafrost region 1; The all the sensors series welding; Guide in the monitoring station through optical cable 12 then; Optical cable 12 is connected with photoswitch 13, and photoswitch 13 is connected with fiber Bragg grating (FBG) demodulator 14, and fiber Bragg grating (FBG) demodulator 14 is connected with slave computer 15; Slave computer 15 pretreated data communication module 16 via satellite transfer to low-orbit satellite 17; Low-orbit satellite 17 forwards the data to satellite communication module 18 after receiving data, and satellite communication module 18 is analyzed the data transmission that receives and handle to host computer 19, thereby realizes the safety monitoring to the permafrost region oil and gas pipes.
A plurality of fiber grating water content sensor a6, fiber grating water content sensor b7, fiber grating water content sensor c8, fiber grating water content sensor d9 pass to photoswitch 13 with the moisture signal around the pipeline through optical cable 12 respectively; Reach slave computer 15 through fiber Bragg grating (FBG) demodulator 14 demodulation; Slave computer 15 calls self-editing program; Control photoswitch 13 and fiber Bragg grating (FBG) demodulator 14 are realized the collection of data and data are carried out pre-service; Pretreated data communication module 16 via satellite transfer to low-orbit satellite 17; Low-orbit satellite 17 forwards the data to satellite communication module 18 after receiving data; Satellite communication module 18 is analyzed the data transmission that receives and handle to host computer 19, judges the safe condition of permafrost region pipeline.The processing of data is mainly accomplished by software, and software flow is as shown in Figure 3.The pre-service of slave computer data mainly is with data based temperature, moisture and the displacement data of being converted into of the optical wavelength of fiber Bragg grating (FBG) demodulator collection; Host computer is after receiving data; At first with data qualification; Draw out the trend map of pipeline environment temperature and water cut and piping displacement thereof, and three Monitoring Data merge the most at last, judge the steady state (SS) of permafrost region and the safety case of pipeline.
The theory diagram of water cut monitoring system is as shown in Figure 3 around the permafrost region oil and gas pipes, and it is divided into on-site data gathering transmission subsystem and data analysis display subsystem.The composition of on-site data gathering transmission subsystem is: the output of fiber grating water content sensor connects the input of photoswitch; The output of photoswitch connects the input of fiber Bragg grating (FBG) demodulator; Fiber Bragg grating (FBG) demodulator output connects the input of slave computer, and slave computer output connects the satellite communication module.The on-site data gathering transmission subsystem links through low-orbit satellite and data analysis display subsystem.The composition of data analysis display subsystem is: the output of satellite communication module connects the input of host computer, and host computer output has permafrost region moisture field dynamically to show.
The electric principle of this system is as shown in Figure 4; The FC joint of fiber grating water content sensor group is connected with FC input port 1, FC input port 2, the FC input port 3 of photoswitch respectively; The R232 port of photoswitch connects the R232 port one of slave computer, and the FC output port of photoswitch connects the FC input port of fiber Bragg grating (FBG) demodulator, and the LAN port of fiber Bragg grating (FBG) demodulator connects the LAN port of slave computer; The VGA of slave computer is connected with the VGA of display; The R232 port 2 of slave computer connects the R232 port of satellite communication module, and to low-orbit satellite, low-orbit satellite forwards the data to another satellite communication module to the satellite communication module in real time with data transmission; This satellite communication module will receive the R232 port of data by R232 port transmission to host computer, and host computer is handled the back to data analysis and exported display to by the VGA port.
Fiber grating water content sensor signal through photoswitch 13 one by one conducting transfer to fiber Bragg grating (FBG) demodulator 14; The centre wavelength that fiber Bragg grating (FBG) demodulator 14 demodulates each fiber-optic grating sensor transfers to slave computer 15, and the cycle of photoswitch 13 Continuity signals is by slave computer 15 controls.15 pairs of data of slave computer are carried out pre-service; And the data after will handling are defeated by satellite communication module 16; To low-orbit satellite 17, low-orbit satellite 17 forwards the data to satellite communication module 18 to satellite communication module 16 in real time with data transmission, and satellite communication module 18 will receive data transmission to host computer; Host computer carries out analyzing and processing through self-programmed software to data, is shown by display.
The fiber grating water content sensor is for develop sensor voluntarily.The fiber grating water content sensor utilizes soil water suction and soil moisture content to have the principle of corresponding relation to develop; The fiber grating water content sensor is made up of vitrified-clay pipe and vacuum box; Vitrified-clay pipe is a sensitive element, and after vitrified-clay pipe was put into soil, the liquid water content of soil can cause the variation of vacuum box pressure; And the variation of vacuum box pressure can cause the variation of optic fiber grating wavelength, and then can go out the liquid water content of soil according to the change calculations of optic fiber grating wavelength.
The formation of permafrost region fiber grating water content sensor group is as shown in Figure 4: in the left side of pipeline d36 fiber grating water content sensor group 37 is installed; On the right side of pipeline d36 fiber grating water content sensor group 38 is installed, fiber grating water content sensor group 39 is installed at the downside of pipeline d36.Water content sensor group 37 is made up of several fiber grating water content sensors 40, and the quantity of fiber grating water content sensor 40 can be according to the demand setting with the interval.Connect through single core armouring optical cable 41 between water content sensor group 38 and the water content sensor group 39.Fiber grating water content sensor group a37, fiber grating water content sensor group b38, fiber grating water content sensor group c39 are connected with data collector through cable junction box 42, realize the pipeline monitoring of water cut on every side.
The advantage of native system shows:
(1) proposes permafrost region and the system that oil and gas pipes is monitored under influencing, disclosed frozen soil effect lower tube body stress characteristic and body and the interactional characteristic of frozen soil; Carry out the frozen soil influence safe early warning of oil and gas pipes down with many indexs;
(2) fiber grating sensing technology is applied to permafrost region pipeline monitoring, this technology is anti-interference, corrosion-resistant, it is with the obvious advantage to be easy to networking etc.; This technology is easy to realize the automatic time on-line monitoring, and cost is lower.
Description of drawings
Water cut monitoring principle figure around Fig. 1 permafrost region oil and gas pipes
Fig. 2 permafrost region pipeline water cut monitoring device figure
Fig. 3 permafrost region oil and gas pipes Fundamentals of Supervisory Systems block diagram
Fig. 4 permafrost region oil and gas pipes monitoring system electrical schematic diagram
1-permafrost region 2-pipeline a wherein
6-fiber grating water content sensor a
7-fiber grating water content sensor b 8-fiber grating water content sensor c
9-fiber grating water content sensor d 12-optical cable
13-photoswitch 14-fiber Bragg grating (FBG) demodulator
15-slave computer 16-satellite communication module a
17-low-orbit satellite 18-satellite communication module b
The 19-host computer
37-fiber grating water content sensor group a 38-fiber grating water content sensor group b
39-fiber grating water content sensor group c 40-fiber grating water content sensor e
The single core armouring of 41-optical cable b 42-cable junction box c
Embodiment
Embodiment. this example is a kind of pilot system, and tests for the permafrost region of the full ice of rich ice at frost zone thickness 2m, frozen soil type, buried depth of pipeline 2m wherein, pipe diameter is that 813mm, wall thickness are 10mm, grade of steel X65.
The overall formation of water cut monitoring system is as shown in Figure 1 around the permafrost region oil and gas pipes, and theory diagram is as shown in Figure 3.The water content sensor group that fiber grating water content sensor 6,7,8,9 is formed is installed around oil and gas pipes 2; The all the sensors series welding; Guide in the monitoring station through optical cable 12 then; Optical cable 12 is connected with photoswitch 13, and photoswitch 13 is connected with fiber Bragg grating (FBG) demodulator 14, and fiber Bragg grating (FBG) demodulator 14 is connected with slave computer 15; Slave computer 15 pretreated data communication module 16 via satellite transfer to low-orbit satellite 17; Low-orbit satellite 17 forwards the data to satellite communication module 18 after receiving data, and satellite communication module 18 is analyzed the data transmission that receives and handle to host computer 19, thereby realizes the safety monitoring to the permafrost region oil and gas pipes.
The electric principle of this example is as shown in Figure 4; The FC joint of fiber grating water content sensor group is connected with FC input port 1, FC input port 2, the FC input port 3 of photoswitch respectively; The R232 port of photoswitch connects the R232 port one of slave computer, and the FC output port of photoswitch connects the FC input port of fiber Bragg grating (FBG) demodulator, and the LAN port of fiber Bragg grating (FBG) demodulator connects the LAN port of slave computer; The VGA of slave computer is connected with the VGA of display; The R232 port 2 of slave computer connects the R232 port of satellite communication module, and to low-orbit satellite, low-orbit satellite forwards the data to another satellite communication module to the satellite communication module in real time with data transmission; This satellite communication module will receive the R232 port of data by R232 port transmission to host computer, and host computer is handled the back to data analysis and exported display to by the VGA port.
Fiber grating water content sensor signal through photoswitch 13 one by one conducting transfer to fiber Bragg grating (FBG) demodulator 14; The centre wavelength that fiber Bragg grating (FBG) demodulator 14 demodulates each fiber-optic grating sensor transfers to slave computer 15, and the cycle of photoswitch 13 Continuity signals is by slave computer 15 controls.15 pairs of data of slave computer are carried out pre-service; And the data after will handling are defeated by satellite communication module 16; To low-orbit satellite 17, low-orbit satellite 17 forwards the data to satellite communication module 18 to satellite communication module 16 in real time with data transmission, and satellite communication module 18 will receive data transmission to host computer; Host computer carries out analyzing and processing through self-programmed software to data, is shown by display.
Wherein:
Fiber grating water content sensor: select the water content sensor of designing packaging voluntarily for use;
Optical cable: day scientific and technological GYTA-12B1 in selecting for use;
Photoswitch: select for use light to swell scientific and technological SUM-FSW;
Fiber Bragg grating (FBG) demodulator: select SM130 for use;
Slave computer and program: select for use and grind magnificent IPC-610, program is self-editing;
Telstar module: the ST2500 of STELLAR company;
Host computer and program: select for use and grind magnificent IPC-610, program is self-editing;
The formation of permafrost region fiber grating water content sensor group is as shown in Figure 2.In the left side of pipeline 36 fiber grating water content sensor group 37 is installed, fiber grating water content sensor group 38 is installed, fiber grating water content sensor group 39 is installed at the downside of pipeline 36 on the right side of pipeline 36.Water content sensor group 37 is made up of several fiber grating water content sensors 40, and the quantity of fiber grating water content sensor 40 can be according to the demand setting with the interval.Connect through single core armouring optical cable 41 between water content sensor group 38 and the water content sensor group 39.Fiber grating water content sensor group a37, fiber grating water content sensor group b38, fiber grating water content sensor group c39 are connected with data collector through cable junction box 42, realize the pipeline monitoring of water cut on every side.
Native system is when monitoring, and moisture needs long term monitoring, according to the analysis to long term monitoring data, sums up change of soil water content state and trend, is used for pipe-soil effect analysis-by-synthesis and pipeline potential risk and judges.
Through monitoring for a long time, this example is easy to make up monitoring system, is easy to realize the real-time automatic collecting analysis and the long-range issue of permafrost region and pipeline Monitoring Data, and remote live is reported to the police automatically.Avoided loaded down with trivial details artificial image data, improved the precision of early warning, reduced time of fire alarming, can also accurately locate simultaneously place of alarm, this to the pipeline emergency measure take most important.
Claims (5)
1. water cut monitoring system around the permafrost region oil and gas pipes is characterized in that this system is divided into on-site data gathering transmission subsystem and data analysis display subsystem, specifically comprises fiber grating water content sensor group, field monitoring station, remote monitoring center;
The permafrost region oil and gas pipes is totally constituting of water cut monitoring system on every side: the water content sensor group that a plurality of fiber grating water content sensor a (6), fiber grating water content sensor b (7), fiber grating water content sensor c (8), fiber grating water content sensor d (9) composition are installed at oil and gas pipes (2) on every side; The all the sensors series welding; Guide in the monitoring station through optical cable (12) then; Optical cable (12) is connected with photoswitch (13); Photoswitch (13) is connected with fiber Bragg grating (FBG) demodulator (14); Fiber Bragg grating (FBG) demodulator (14) is connected with slave computer (15), and the pretreated data of slave computer (15) communication module (16) via satellite transfer to low-orbit satellite (17), and low-orbit satellite (17) forwards the data to satellite communication module (18) after receiving data; Satellite communication module (18) is analyzed the data transmission that receives and handle to host computer (19), thereby realizes the safety monitoring to the permafrost region oil and gas pipes;
A plurality of fiber grating water content sensor a (6), fiber grating water content sensor b (7), fiber grating water content sensor c (8), fiber grating water content sensor d (9) pass to photoswitch (13) with the moisture signal around the pipeline through optical cable (12) respectively; Reach slave computer (15) through fiber Bragg grating (FBG) demodulator (14) demodulation; Slave computer (15) calls self-editing program; Control photoswitch (13) and fiber Bragg grating (FBG) demodulator (14) are realized the collection of data and data are carried out pre-service; Pretreated data communication module (16) via satellite transfer to low-orbit satellite (17); Low-orbit satellite (17) forwards the data to satellite communication module (18) after receiving data; Satellite communication module (18) is analyzed the data transmission that receives and handle to host computer (19), judges the safe condition of permafrost region pipeline.
2. water cut monitoring system around a kind of permafrost region oil and gas pipes according to claim 1, it is characterized in that its theory diagram is: it is divided into on-site data gathering transmission subsystem and data analysis display subsystem; The composition of on-site data gathering transmission subsystem is: the output of fiber grating water content sensor connects the input of photoswitch; The output of photoswitch connects the input of fiber Bragg grating (FBG) demodulator; Fiber Bragg grating (FBG) demodulator output connects the input of slave computer, and slave computer output connects the satellite communication module; The on-site data gathering transmission subsystem links through low-orbit satellite and data analysis display subsystem; The composition of data analysis display subsystem is: the output of satellite communication module connects the input of host computer, and host computer output has permafrost region moisture field dynamically to show.
3. water cut monitoring system around a kind of permafrost region oil and gas pipes according to claim 1 and 2; The electric principle that it is characterized in that this system is: the FC joint of fiber grating water content sensor group is connected with FC input port 1, FC input port 2, the FC input port 3 of photoswitch respectively; The R232 port of photoswitch connects the R232 port one of slave computer; The FC output port of photoswitch connects the FC input port of fiber Bragg grating (FBG) demodulator; The LAN port of fiber Bragg grating (FBG) demodulator connects the LAN port of slave computer, and the VGA of slave computer is connected with the VGA of display, and the R232 port 2 of slave computer connects the R232 port of satellite communication module; The satellite communication module arrives low-orbit satellite with data transmission; Low-orbit satellite forwards the data to another satellite communication module in real time, and this satellite communication module will receive the R232 port of data by R232 port transmission to host computer, and host computer is handled the back to data analysis and exported display to by the VGA port;
Fiber grating water content sensor signal through photoswitch (13) one by one conducting transfer to fiber Bragg grating (FBG) demodulator (14); The centre wavelength that fiber Bragg grating (FBG) demodulator (14) demodulates each fiber-optic grating sensor transfers to slave computer (15), and the cycle of photoswitch (13) Continuity signal is controlled by slave computer (15); Slave computer (15) carries out pre-service to data; And the data after will handling are defeated by satellite communication module (16); To low-orbit satellite (17), low-orbit satellite (17) forwards the data to satellite communication module (18) to satellite communication module (16) in real time with data transmission, and satellite communication module (18) will receive data transmission to host computer (19); Host computer (19) carries out analyzing and processing through self-programmed software to data, is shown by display.
4. water cut monitoring system around a kind of permafrost region oil and gas pipes according to claim 1 and 2 is characterized in that said fiber grating water content sensor is made up of vitrified-clay pipe and vacuum box, and vitrified-clay pipe is a sensitive element.
5. water cut monitoring system around a kind of permafrost region oil and gas pipes according to claim 1; The formation that it is characterized in that said permafrost region fiber grating water content sensor group is: fiber grating water content sensor group (37) is installed in the left side at pipeline d (36); Fiber grating water content sensor group (38) is installed on right side at pipeline d (36), at the downside of pipeline d (36) fiber grating water content sensor group (39) is installed; Water content sensor group (37) is made up of several fiber grating water content sensors (40), and the quantity of fiber grating water content sensor (40) and interval are according to the demand setting; Connect through single core armouring optical cable (41) between water content sensor group (38) and the water content sensor group (39); Fiber grating water content sensor group a (37), fiber grating water content sensor group b (38), fiber grating water content sensor group c (39) are connected with data collector through cable junction box (42).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201220197101 CN202599815U (en) | 2012-05-04 | 2012-05-04 | System for monitoring water content around oil and gas pipeline in frozen soil area |
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| CN 201220197101 CN202599815U (en) | 2012-05-04 | 2012-05-04 | System for monitoring water content around oil and gas pipeline in frozen soil area |
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| CN202599815U true CN202599815U (en) | 2012-12-12 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383345A (en) * | 2012-05-04 | 2013-11-06 | 中国石油天然气股份有限公司 | System for monitoring water content around oil and gas pipeline in frozen soil area |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103383345A (en) * | 2012-05-04 | 2013-11-06 | 中国石油天然气股份有限公司 | System for monitoring water content around oil and gas pipeline in frozen soil area |
| CN103383345B (en) * | 2012-05-04 | 2017-01-25 | 中国石油天然气股份有限公司 | System for monitoring water content around oil and gas pipeline in frozen soil area |
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Granted publication date: 20121212 Termination date: 20210504 |