CN103277091B - High temperature well temperature, Pressure behaviour monitoring system - Google Patents
High temperature well temperature, Pressure behaviour monitoring system Download PDFInfo
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- CN103277091B CN103277091B CN201210450225.8A CN201210450225A CN103277091B CN 103277091 B CN103277091 B CN 103277091B CN 201210450225 A CN201210450225 A CN 201210450225A CN 103277091 B CN103277091 B CN 103277091B
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Abstract
The invention provides a kind of high temperature well temperature, Pressure behaviour monitoring system.The software process that the present invention is through central automatic control system (7) calculates corresponding data, be delivered to respectively mechanical electronic dual-display screen (9) and data storage and remote transmitting system (8), the pressure of each layer position of teletransmission, temperature, dynamic liquid level height, steam quality data shown and stored respectively, technical pattern and the method for the dynamic monitoring of high temperature well temperature, pressure or mobile test completed.Fitting operation of the present invention is convenient and swift, and is not subject to other environmental disturbances such as transmission, there is not drift phenomenon without the need to correction, and can run in the hot environment long-term stability of oil well, energy direct-reading, storage, teletransmission total data, test result is directly perceived, accurate.
Description
Technical field
The present invention relates to diaphragm-balanced sensor technical field, especially a kind of high temperature well temperature, Pressure behaviour monitoring system.
Background technology
When running into the thermal recovery technologies such as ultradeep well, note high-temperature steam well, fireflood well when oil extraction, this specific aim of downhole temperature, pressure data formulates the most important foundation improving recovery process, cannot realize dynamic monitoring simultaneously so far.In current domestic and international existing various correlation technique, capillary tube well pressure measuring technology can only obtain pressure data, and volume large waste nitrogen resource; Electronics and optical fiber measuring technology can not meet heat resistant requirements, and there is signal drift repairing problem, truly can not reflect down-hole temperature, pressure value; Vacuum heat-preserving throwing type down-hole temperature and pressure measuring technology, can not realize long-term dynamics monitoring and need the test that stops production, and petroleum industry is needed badly and solved hp-ht well temperature, pressure cannot realize the problem of dynamic monitoring simultaneously.
Summary of the invention
Instant invention overcomes the deficiency of above-mentioned prior art, its object is to provide a kind of and use diaphragm-balanced fluid temperature (F.T.), pressure sensor, Signal transmissions carrier is done with coaxial capillary tube and nitrogen, by the temperature, pressure monitoring system that closed loop micro-gas pressurization cycle device is nitrogen increasing, pressure release promotion source, direct method is utilized to solve high-temperature oil well temperature, pressure dynamic monitoring simultaneously problem.The temperature of this dynamic monitoring system, pressure sensor is thin outer thick transitional barrier film in utilizing special metal material to make, such structure can not be broken because of pressurized and stress, barrier film is arranged on two symmetrically arranged limit body A, microgap is retained between B, barrier film and A limit body and housing keep good conductance and sealing, B insulation limit body keeps good electric insulating state with barrier film and housing, metal diaphragm and housing are by A, B two limit bodies divide and are interposed between in two airtight fluid cavitys, limit body is mainly used in the axial displacement protection barrier film limiting barrier film.A limit body contacts the temperature sensing medium in measured medium or temperature-sensitive capsule.In test process, when measured medium pressure or the temperature sensing medium bulbs of pressure be greater than B insulate the nitrogen pressure of limit body end time, barrier film axial deformation and B insulate the central contact short circuit conducting of limit body; Nitrogen is entered to B insulation limit body side pressure, when with pressure medium or the temperature sensing medium bulbs of pressure reach balance or be greater than equilibrium pressure time, the insulate contact of limit body of barrier film and B disconnects, B insulation limit body and housing electricity are in state of insulation, utilize this switching relation at pressure balance point, trigger central automatic control system record to catch, show this equilibrium pressure force value, obtain by measuring pressure with this; The force value of temperature pick up is pressed temperature and pressure relationship equation by software, converts, demonstrate corresponding temperature value, realize the temperature of particular surroundings, pressure monitoring.Can simultaneously according to recording associated temperature force value and well head pressure value tries to achieve dynamic liquid level height and each layer position steam quality value.Pressure and temperature sensor construction principle is identical, and difference is that temperature pick up arranges a temperature sensing medium capsule.
Above-mentioned purpose of the present invention is realized by following technological means: a kind of high temperature well temperature, Pressure behaviour monitoring system, comprise balanced diaphragm fluid temperature (F.T.), pressure sensor, coaxial capillary tube, capillary tube is outstanding protects card, capillary tube safety pulling device, closed loop micro-gas pressurization cycle device, central automatic control system, data store and remote transmitting system, mechanical electronic dual-display screen and well head pressure transmitter etc.It is characterized in that said high temperature well temperature, Pressure behaviour monitoring system, under the instruction of central automatic control system, closed loop micro-gas pressurization cycle device is utilized to increase to coaxial capillary tube, let out nitrogen, axial deformation is produced when allowing the barrier film of sensor reach pressure balance on both sides, the contact of B insulation limit body produces on-off action, with moment during this break-make different change in resistance for triggering signal, allow central automatic control system catch, different (temperature expansion pressure and real medium pressure) equilibrium pressure surveying layer when distinguishing this; Downhole temperature, force value and well head pressure value measured by systems soft ware utilizes, calculate dynamic liquid level height, each layer position steam quality data according to correlation formula, for display, storage, teletransmission.Barrier film temperature, pressure sensor, as pressure perception body, have high temperature resistant and corrosion resistance.It promotes barrier film by nitrogen makes it produce axial deformation to complete test assignment, when tested end with inflation end pressure balance or overbalance time, insulate limit body and housing of the B of sensor is non-conductive state, in this, as the triggering signal that equilibrium pressure (fill, popping pressure) catches; Coaxial capillary tube is as the carrier of pressure and triggering signal, it is characterized in that a stainless steel capillary tube armored cable to insert in the larger stainless steel capillary of another root diameter and form a coaxial composite capillary, to reduce volume, improve its temperature tolerance, corrosion resistance and intensity, the annular space that armored cable and capillary tube are formed is for conducting nitrogen, and armored cable is for transmitting equilibrium pressure triggering signal; Capillary tube hangs and protects load-bearing and the protective effect that card plays coaxial capillary tube, it is characterized in that it is installed in tubing coupling, in the middle part of it, internal diameter is large, and match with tubing coupling external diameter, two ends internal diameter is little, match with this body diameter of oil pipe, be made up of in two the semi-circular tube pipe nipple hinges fastenings opened radial direction, be axially arranged with capillary tube through passage, for the coaxial capillary tube of segmentation load-bearing in hinge side, protective hair tubule is not extruded by tubing and casing, plays to hang and protects effect; Capillary tube safety pulling device, according to institute's supporting different model wellhead tree tree big four connected mode, is divided into clamp connection and Flange joint two kinds of form of structure, is made up of steel ring sealing flange, safe gate valve and capillary tube connector.It is characterized in that all adopting steel ring hermetically-sealed construction, be provided with manual safety in outside and shear gate valve, in abnormal cases quick closedown, Accident prevention occurs.Its effect is drawn by well head side by coaxial capillary tube, and its wiper seal rank is identical with the pressure rank that supporting wellhead tree is set.Closed loop micro-gas pressurization cycle device is primarily of compositions such as miniature high-low pressure gasholder, pressure meter, high-pressure solenoid valve, high-pressure mini circulation pump, high-precision pressure sensor, capillary tubies.Its effect circulates injection, recovery nitrogen, pressure meter for showing the nitrogen pressure of high-low pressure gasholder by coaxial capillary tube to downhole instrument.It is characterized in that the nitrogen in Miniature low voltage gasholder is squeezed into high-pressure mini gasholder and stored by high-pressure mini circulation pump, by high-pressure solenoid valve by instruction opening and closing, in well, instrument is suppressed and is injected appropriate nitrogen; Low-voltage solenoid valve is by instruction opening and closing, and the nitrogen in the appropriate recovery well of pressure release in instrument enters low pressure gasholder, reciprocating downhole instrument work according to this.Central authorities' automatic control system is made up of microcomputer circuit and professional control software design, it is the commanding agency of monitoring system, it is characterized in that it can be arranged, regulate and control dynamic monitoring speed, control high-pressure mini circulation pump and squeeze into the nitrogen pressure met needed for test to high-pressure mini gasholder, control the corresponding open and close of each high-pressure solenoid valve follow procedure, inject or release recovery nitrogen to downhole instrument, and intelligently according to the resistance value sudden change fuzzy value in the equilibrium pressure triggering signal loop of linear pressure, temperature pick up, distinguish, catch and record pressure, temperature data; When multilayer megadyne temperature degree, pressure monitoring, accurately can distinguish, catch the temperature, the force value that record different layers position, extremely warn.And calculate down-hole producing fluid level and each layer position steam quality data, by the related data that records and calculate together with measured layer bit depth, flow to the two aobvious screen of mechano-electronic direct-reading and data store and remote transmitting system.The two aobvious screen of mechano-electronic direct-reading is formed primarily of mechanical pressure gauge and electronic digital display screen, it is characterized in that mechanical pressure gauge is used to show in real time the pressure in downhole gas loop, electronic digital display screen is for showing the actual data such as each layer megadyne temperature degree, pressure, dynamic liquid level height, each layer position steam quality and corresponding survey layer depth, environment temperature, time and well head pressure value recording and calculate.Data store and remote transmitting system is formed primarily of storage system and Wireless Long-range Transmission System, it is characterized in that it possesses that Large Copacity stores on the spot, flash disk copy and all data wireless remote function, and mutually compatible with the data bank network of user; Well head pressure transmitter for monitoring surface well mouth pressure, and provides data for calculating producing fluid level.
High temperature well temperature provided by the present invention, Pressure behaviour monitoring system, compared with prior art have the following advantages:
The temperature that this monitoring system uses, pressure sensor belong to direct method measuring media pressure, and test environment is without electronic component, and not by other environmental disturbances such as transmission, there is not drift phenomenon without the need to revising, test result is directly perceived, accurate; The sensor adopted and downhole tool temperature tolerance, more than 500 DEG C, can run in the high temperature ring long-term stability of oil well; Only can realize multilayer megadyne temperature degree, pressure test with a coaxial capillary tube, and try to achieve the data such as steam quality, producing fluid level; Adopt micro-gas endless form, whole monitoring periods can be completed with a small amount of nitrogen, do not need supplementary nitrogen; Energy direct-reading, storage, teletransmission total data; Well performance monitoring can be entered with oil pipe, the wire rope coaxial capillary tube winch that interweaves also can be utilized to put into mobile test, the easy strong adaptability of fitting operation.
Accompanying drawing explanation
Fig. 1 is high temperature well, Pressure behaviour monitoring system schematic diagram in the specific embodiment of the invention;
Fig. 2 is the closed loop micro-gas pressurization cycle device schematic diagram in the specific embodiment of the invention;
Fig. 3 is the pressure sensor structure schematic diagram in the specific embodiment of the invention;
Fig. 4 is the arrangement of temperature sensor schematic diagram in the specific embodiment of the invention;
To be that capillary tube in the specific embodiment of the invention is outstanding protect card schematic diagram to Fig. 5;
Fig. 6 is the capillary tube safety pulling device schematic diagram in the specific embodiment of the invention;
Fig. 7 is the capillary tube tee junction schematic diagram in the specific embodiment of the invention.
Detailed description of the invention
The embodiment of the present invention is introduced in detail: a kind of high temperature well temperature below in conjunction with accompanying drawing, Pressure behaviour monitoring system, comprise pressure sensor 1, balanced diaphragm fluid temperature sensor 2, coaxial capillary tube 3, capillary tube is outstanding protects card 4, capillary tube safety pulling device 5, capillary tube threeway 6, central authorities' automatic control system 7, data store and remote transmitting system 8, mechanical electronic dual-display screen 9 and closed loop micro-gas pressurization cycle device 11 etc., pressure sensor 1 and balanced diaphragm fluid temperature sensor 2 are installed or are placed down in each measured position of oil well, connect with a coaxial capillary tube 3, and hang protect in the draw-in groove 25 of card 4 at the capillary tube that tubing and casing annular space is pressed in segmentation load-bearing protection along oil-pipe external wall card, upwards be connected in the interior snap joint 31 of capillary tube safety pulling device 5, by the outer snap joint 32 of capillary tube safety pulling device 5, coaxial capillary tube 3 is connected to central automatic control system 7 again, be connected by capillary tube threeway 6 boost electromagnetic valve 13 of capillary tube 10 and closed loop micro-gas pressurization cycle device 11 and pressure release electromagnetic valve 12.
In closed loop micro-gas pressurization cycle device 11, the exhaust end of low pressure miniature gas storage tank 18 and the inlet end of high-pressure mini circulation pump 17 be connected, inlet end and pressure release electromagnetic valve 12 are connected to capillary tube threeway 6, complete pressure release and reclaim gas storage task; The exhaust end of high-pressure mini circulation pump 17 is connected to the inlet end of high pressure miniature gas storage tank 15 by voltage-controlled electromagnetic valve 16, the exhaust end of high pressure miniature gas storage tank 15 is connected with capillary tube threeway 6 with capillary tube 10 by boost electromagnetic valve 13, completes high pressure nitrogen and injects supercharging task.One of its feature is that high-pressure mini circulation pump 17 and voltage-controlled electromagnetic valve 16 are controlled by the preset pressure value of pressure control device 14 simultaneously, completes the storage pressure task of high pressure miniature gas storage tank 15; Two of its feature is that the boost electromagnetic valve 13 of micro-gas circulating device 11 and pressure release electromagnetic valve 12 are controlled by central automatic control system 7, completes increasing, pressure leak process by instruction, for promoting temperature, pressure transducer diaphragm, and transmission pressure signal;
After central authorities' automatic control system 7 sends timing note, disappointing test instruction under special-purpose software controls, barrier film 21 and the B of each layer position temperature pick up 2, pressure sensor 1 insulate limit body 20 contact make-and-break signal triggering under, pressure signal when catching this, and determine it is the relevant pressure value of which sensor according to the resistance of triggering signal sudden change basic value, be delivered to the two aobvious screen 9 of mechano-electronic direct-reading respectively and data store and remote transmitting system 8 corresponding display and store teletransmission respectively through process.
Balanced diaphragm fluid temperature sensor 2 and pressure sensor 1, it is characterized in that A limit body 19 and B are insulated limit body 20 by certain interval sealed separation in its both sides by metal diaphragm 21 and sensor housing 22, metal diaphragm 21 is by A, B two ends differential pressure action produces axially micro-deformation, B insulate limit body 20 with sensor housing 22 in state of insulation, only its circle centre position is provided with a contact and is connected with the armored cable 33 in coaxial capillary tube 3, when B end pressure balance or when holding a little more than A, the insulate contact of limit body 20 of metal diaphragm 21 and B disconnects, otherwise connect, with this as triggering signal during balance, with the difference of pressure sensor 1, temperature pick up 2 is that metal diaphragm 21 deformation of temperature pick up 2 is controlled by the bulbs of pressure of temperature sensing medium in its temperature-sensitive capsule 23.
Capillary tube hangs and protects card 4 and need to clamp one at the box cupling place of every root oil pipe, it is characterized in that abnormity half tube column 26 that it is separated by two identical radial directions forms, after fastening, its inside is provided with the large footpath hollow out cylindrical cavity 28 matched with tubing coupling, two ends have been symmetrical arranged the spacing half the circumference of the sleeve where it joins the shoulder of path with oil pipe body gentleness, for preventing its upper and lower play.Two abnormity half tube columns 26 complete chain connection with d-axis 24, and its outside axial radiation is provided with the braced wing 27 of multiple symmetry, for keeping the annular space of tubing and casing unobstructed, are convenient to other process implementing.Curved capillary tube draw-in groove 25 is provided with, for the protection of clamping coaxial capillary tube 3 and preventing its upper and lower play in the inner side of d-axis 24.
Capillary tube safety pulling device 5 is made up of flange 29, safe gate valve 30, inner capillary tube joint 31 and outer capillary tube connector 32.It is characterized in that all technical datas of flange 29 must be supporting with well head side flange, safety shearing gate valve 30 will possess can cut short coaxial capillary tube 3 and the ability of closedown sealing fast in abnormal conditions.
Capillary tube tee junction 6, is characterized in that the integrity of the armored cable 33 in the coaxial capillary tube 3 that it can be maintained across wherein, can keep the good gas general character again with the capillary tube 10 be connected.
Claims (4)
1. a high temperature well temperature, Pressure behaviour monitoring system, comprise balanced diaphragm fluid temperature sensor (2), pressure sensor (1), coaxial capillary tube (3), capillary tube is outstanding protects card (4), capillary tube safety pulling device (5), closed loop micro-gas pressurization cycle device (11), central authorities' automatic control system (7), data store and remote transmitting system (8), the two aobvious screen (9) of mechano-electronic direct-reading, capillary tube (10), it is characterized in that described high temperature well temperature, Pressure behaviour monitoring system is under central automatic control system (7) commander, noted to coaxial capillary tube (3) by closed loop micro-gas pressurization cycle device (11), let out nitrogen, by the high pressure nitrogen injected, promote balanced diaphragm fluid temperature sensor (2), the metal diaphragm (21) of pressure sensor (1) does axial deformation, on-off action is being produced balancing the insulate contact of limit body (20) of critical point and B by the nitrogen pressure of measuring pressure and injection, as triggering signal seizure equilibrium pressure signal now, and determine it is the relevant pressure value of which sensor according to the resistance of triggering signal sudden change basic value, the data of surge well mouth pressure transmitter (0), software process through central automatic control system (7) calculates corresponding data, be delivered to the two aobvious screen (9) of mechano-electronic direct-reading and data storage and remote transmitting system (8) respectively, show and store the pressure of each layer position of teletransmission respectively, temperature, dynamic liquid level height, steam quality data, complete technical pattern and the method for the dynamic monitoring of high temperature well temperature, pressure or mobile test.
2. high temperature well temperature according to claim 1, Pressure behaviour monitoring system, it is characterized in that: A limit body (19) and B are insulated limit body (20) by certain interval sealed separation in its both sides by metal diaphragm (21) and sensor housing (22), metal diaphragm (21) is by A, B two ends differential pressure action produces axially micro-deformation, B insulate limit body (20) with sensor housing (22) in state of insulation, only its circle centre position is provided with a contact and is connected with the armored cable (33) in coaxial capillary tube (3), when B end pressure balance or when holding a little more than A, the insulate contact of limit body (20) of metal diaphragm (21) and B disconnects, otherwise connect, with this as triggering signal during balance, balanced diaphragm fluid temperature sensor (2) and the difference of pressure sensor (1) are that metal diaphragm (21) deformation of balanced diaphragm fluid temperature sensor (2) is controlled by the bulbs of pressure of temperature sensing medium in its temperature-sensitive capsule (23).
3. high temperature well temperature according to claim 1 and 2, Pressure behaviour monitoring system, it is characterized in that: closed loop micro-gas pressurization cycle device (11), be connected with the inlet end of high-pressure mini circulation pump (17) by the exhaust end of low pressure miniature gas storage tank (18), inlet end and pressure release electromagnetic valve (12) are connected to capillary tube threeway (6), complete pressure release and reclaim gas storage task; The exhaust end of high-pressure mini circulation pump (17) is connected to the inlet end of high pressure miniature gas storage tank (15) by voltage-controlled electromagnetic valve (16), the exhaust end of high pressure miniature gas storage tank (15) is connected with capillary tube threeway (6) with capillary tube (10) by boost electromagnetic valve (13), complete high pressure nitrogen and inject supercharging task, high-pressure mini circulation pump (17) and voltage-controlled electromagnetic valve (16) are controlled by the preset pressure value of pressure control device (14) simultaneously, complete the storage pressure task of high pressure miniature gas storage tank (15); Boost electromagnetic valve (13) and the pressure release electromagnetic valve (12) of closed loop micro-gas pressurization cycle device (11) are controlled by central automatic control system (7), increasing, pressure leak process is completed by instruction, for promoting temperature, pressure transducer diaphragm, transmission pressure signal.
4. high temperature well temperature according to claim 1 and 2, Pressure behaviour monitoring system, it is characterized in that: central automatic control system (7), under special-purpose software control commander, send timing regularly control boost electromagnetic valve (13) and pressure release electromagnetic valve (12) opening and closing note, lose heart, each layer position balanced diaphragm fluid temperature sensor (2), the barrier film (21) of pressure sensor (1) and B insulate limit body (20) contact make-and-break signal triggering under, catch pressure signal now, and determine it is the relevant pressure value of which sensor according to the resistance of triggering signal sudden change basic value, pass through process and be delivered to corresponding display and the storage teletransmission respectively of mechano-electronic direct-reading pair aobvious screen (9) and data storage and remote transmitting system (8) respectively.
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| CN201210450225.8A CN103277091B (en) | 2012-11-07 | 2012-11-07 | High temperature well temperature, Pressure behaviour monitoring system |
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| CN201210450225.8A CN103277091B (en) | 2012-11-07 | 2012-11-07 | High temperature well temperature, Pressure behaviour monitoring system |
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| CN103277091B true CN103277091B (en) | 2016-04-20 |
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| CN103161448A (en) * | 2013-03-13 | 2013-06-19 | 中国石油大学(华东) | Diaphragm balanced floating body temperature sensor |
| CN103615231B (en) * | 2013-11-18 | 2016-04-27 | 中国科学院西安光学精密机械研究所 | Synchronous on-line measuring device for temperature, pressure and steam dryness of steam injection type oil well |
| CN103726833A (en) * | 2013-12-10 | 2014-04-16 | 中国科学院力学研究所 | Ground data collection system for capillary tube testing |
| CN105443093B (en) * | 2015-12-16 | 2018-07-17 | 中国石油大学(北京) | Well head combined measuring device and its method for injection well |
| CN105569623B (en) * | 2015-12-16 | 2018-07-20 | 中国石油大学(北京) | Well head combined measuring device and its method for water injection well |
| CN107448191A (en) * | 2016-05-30 | 2017-12-08 | 中国石油天然气集团公司 | A kind of temperature and pressure synchronous monitoring system of coal bed gas well |
| CN106223935B (en) * | 2016-09-05 | 2019-08-16 | 深圳市奈士迪技术研发有限公司 | A kind of oil temperature monitoring system for oil exploration |
| CN106437675A (en) * | 2016-09-05 | 2017-02-22 | 广州市中潭空气净化科技有限公司 | Oil well safety monitoring system for oil exploration |
| CN106522888B (en) * | 2016-10-12 | 2018-09-18 | 中国科学院力学研究所 | A kind of biradical driving mining system of aqueous vapor |
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