CN2840073Y - Plugging electrical resistivity conductivity sensor - Google Patents
Plugging electrical resistivity conductivity sensor Download PDFInfo
- Publication number
- CN2840073Y CN2840073Y CNU200520133499XU CN200520133499U CN2840073Y CN 2840073 Y CN2840073 Y CN 2840073Y CN U200520133499X U CNU200520133499X U CN U200520133499XU CN 200520133499 U CN200520133499 U CN 200520133499U CN 2840073 Y CN2840073 Y CN 2840073Y
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- resistivity
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- lower sealing
- sealing cover
- plug
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Abstract
The utility model is a kind of resistivity and conductivity sensor of plug-in, comprise shell, this shell at least by be threaded or engage on, lower sealing cover two parts constitute, the lower sealing cover sidewall is an insulator, on in the space of lower sealing cover, following grafting is provided with resistivity test device and conductivity measuring apparatus, this shell is provided with fluid intake and the fluid egress point for fluid flow, wherein, resistivity test device, form first cavity that communicates with fluid intake between lower sealing cover sidewall and the top cover labyrinth, the inside of resistivity test device and conductivity measuring apparatus has second cavity with the first cavity conducting, conductivity measuring apparatus, be formed with the 3rd cavity that is connected with second cavity and fluid egress point between lower sealing cover sidewall and the lower sealing cover.The utlity model has the advantage that structure is tight, easy for installation, measurement is accurate and be applicable to the environment of High Temperature High Pressure.
Description
Technical field
The utility model relates to a kind of resistivity and conductivity sensor, in particular for the resistivity and conductivity sensor of a kind of plug-in of high temperature and high pressure environment.
Background technology
Sensor is widely used in commercial production, type is various, especially the application of resistivity and/or conductivity sensor is the most general, their ultimate principle all is that it is inserted in the middle of the fluid, the power of the signal of sensing fluid realizes the measurement to resistivity or conductivity, and then judge the parameter of needs according to environment for use, reach the purpose that the device of using this sensor is realized.
When carrying out oil exploitation, being most widely used of this sensor, well logging in the petroleum drilling operation (collecting and write down the process of geological information from earth depths) process is very necessary, general all is to adopt plug-in resistance rate or the conductivity sensor signal under inductively, which kind of material is size by resistivity or conductivity exist definitely down, is example with the oil, if the content of oil is higher, then resistivity is higher, and conductivity is less.In the parameter measurement pipe nipple, the resistivity sensor that adopts, generally comprise six electrodes, i.e. two emitting electrodes, two receiving electrodes and two equipotential electrodes, sensor is put into after the well by drill bit, obtain the information of mud resistivity by measurement receiving electrode voltage, and then determined whether that oil exists, determine next step production program again.And because mining environment is comparatively abominable, require the structure processing more complicated of electrode system, insulativity requires very high, and temperature sensor is set simultaneously generally, so that at any time to the temperature monitoring of detection system, the safe operation of assurance system, this temperature sensor is to constitute the test bridge by platinum-membrane resistor and super high precision resistance, obtain the temperature of mud by the resistance of measuring thermistor, because thermistor bearing requirements height, mounting structure is compact, and difficulty of processing is very big, and this has just increased cost of winning to a great extent.And generally just resistivity or conductivity are measured, can not be made judgement by very accurate material underground existence.
And existing conductivity sensor generally is to be made of the glass conductance cell of an inside with three platinum electrodes, put it in the time of use to measure conductivity of fluid in the solution, and then the composition that contains of convection cell judges.
Above-mentioned resistivity and conductivity sensor all can not adapt to the working environment of High Temperature High Pressure, thus a kind of working environment that can adapt to the harshness of High Temperature High Pressure, and can be accurately to underground contained material carry out measured sensor real for industry required.
Summary of the invention
The utility model solves resistivity of the prior art and conductivity sensor damages under high temperature and high pressure environment easily, and measure coarse technical matters, its goal of the invention provides a kind of resistivity and conductivity sensor of plug-in, has the environment that structure is tight, measurement is accurate and be applicable to High Temperature High Pressure.
The technical solution of the utility model is such:
A kind of resistivity and conductivity sensor of plug-in, be inserted in the body of pick-up unit, comprise shell, this shell by be spirally connected or engage on, lower sealing cover two parts constitute, the lower sealing cover sidewall is an insulator, on in the space of lower sealing cover, following grafting is provided with resistivity test device and conductivity measuring apparatus, the sidewall of the top cover labyrinth of this shell is provided with the fluid intake for fluid flow, the sidewall of lower sealing cover is provided with the fluid egress point of circulation for liquid, wherein, resistivity test device, form first cavity that communicates with fluid intake between lower sealing cover sidewall and the top cover labyrinth, fluid flows into first cavity by the top cover labyrinth through hole, the inside of resistivity test device and conductivity measuring apparatus has second cavity with the first cavity conducting, conductivity measuring apparatus, be formed with the 3rd cavity that is connected with second cavity and fluid egress point between lower sealing cover sidewall and the lower sealing cover.
Described resistivity test device comprises insulation inner core, transmitting coil, receiving coil, shading ring and interior pressure-bearing cover, should be set in insulation inner core outside by interior pressure-bearing cover, described transmitting coil and receiving coil are set on the insulation inner core, and two coils are located at respectively in the space that is made of shading ring and interior pressure-bearing pipe.
Described insulation inner core is a hollow tubular; The pressure-bearing pipe is a metal material in described; Described shading ring is made up of cylindrical shape shielding plate and the inside toroidal membrane that forms, and described receiving coil and transmitting coil are located at respectively in two cells that are made of shading ring and interior pressure-bearing pipe.
Described shading ring is arranged with the pressure-bearing cover outward, and this pressure-bearing puts and has an axial groove, is used to place the cabling that emission and receiving coil are connected with external circuit.
The sealing ring that described pressure-bearing cover and shading ring are combined closely with frictionally between insulation inner core and lower sealing cover sidewall towards the one side of top cover labyrinth is pushed down fixing.
Described conductivity measuring apparatus comprises interior insulation sleeve, metal inner core and seal, the second interior cavity of second cavity that forms between insulation sleeve and the seal in described and resistivity test device is communicated with, described metal inner core and seal constitute the two poles of the earth of electric capacity, the coupling of fluid through between the 3rd cavity between the two.
Described metal inner core is fixed by the insulated enclosure seat.
Described lower sealing cover is provided with cable hole, and this cable hole adopts the sealing-plug sealing.
By above technical scheme as can be known, technique effect of the present utility model is significant, this scheme is integrated at one with the sensor of resistance and conductivity, structure is tight, volume is little, and adopt metal material and good seal performance, can high temperature high voltage resistant, be specially adapted to the test of convection cell resistivity and conductivity under the high temperature hyperbaric environment such as petroleum drilling.
Description of drawings
Fig. 1 is the structure cut-open view of the preferred embodiment of resistivity and conductivity sensor described in the utility model.
Embodiment
The utility model proposes a kind of resistivity and conductivity sensor of plug-in, be illustrated in figure 1 as the structure cut-open view of sensor described in the utility model, this sensor comprises shell 1, resistivity test device 2 and conductivity measuring apparatus 3, wherein shell 1 includes top cover labyrinth 5 and the lower sealing cover 20 that is spirally connected or engages at least, and the sidewall of lower sealing cover 20 is an insulator.In embodiment of the present utility model, the sidewall of lower sealing cover 20 also can be made of the external insulation sleeve 12 that is inserted in lower sealing cover 20 inwalls.
The utility model in use, it need be inserted into that (this body is the parts in the pick-up unit in the body 11, be used for installing the utility model), respectively being provided with one group of four through hole on the wherein upper and lower gland bonnet is connected fluid intake 31, the fluid egress point 31 of internal cavity and body 11, be formed with the circular passage on the body 11 outside fluid intake 31 and fluid egress point 32, the O-ring seal of an annular is all arranged on the both sides up and down of two groups of through holes and the lid between them, structure of the present utility model is played sealing function.In the present embodiment, be formed with cable hole on the lower sealing cover 20, be used to place the cabling that sensor leads to external circuit, this cable hole can be blocked with sealing-plug 16, to avoid circuit the being damaged assurance line security under rigorous environment.
The upper and lower part of external insulation sleeve 12 inside of formation lower sealing cover 20 sidewalls in the shell 1 of the present utility model is equiped with resistivity test device 2 and conductivity measuring apparatus 3 respectively, wherein is formed with first a cavity a who is connected with fluid intake 31 between resistivity test device 2, external insulation sleeve 12 (sidewall of lower sealing cover 20) and the top cover labyrinth 5; The inside of resistivity test device 2 and conductivity measuring apparatus 3 is formed with the second cavity b that is communicated with the first cavity a; Be formed with the 3rd cavity c that is connected with the second cavity b and fluid egress point 32 between conductivity measuring apparatus 3, external insulation sleeve 12 (sidewall of lower sealing cover 20) and the lower sealing cover 20.After the utility model is installed on the pick-up unit, be placed in the well, fluid can be flowed among the described first cavity a, the second cavity b and the 3rd cavity c by fluid intake 31, flow out by fluid egress point 32 again, resistivity test device 2 and conductivity measuring apparatus can be sent to external circuit with the data of measuring by lead according to the situation of fluid, by external circuit it are handled again.
Resistivity test device 2 described in the utility model comprises the insulation inner core 6 of tubulose, these insulation inner core 6 outer interior pressure-bearing pipes 31 that are arranged with nonmetallic materials, be used for the auxiliary pressure that bears insulation inner core 6 inner fluids, the shading ring 30 that the toroidal membrane that is inwardly formed by cylindrical shape shielding plate and its middle part that interior pressure-bearing pipe 31 is outer to be arranged with also that metal material makes is formed, in two cells that between by this shading ring 30 and interior pressure-bearing pipe 31, form transmitting coil 9 and receiving coil 10 are set respectively, the shading ring 30 outer pressure-bearing covers 8 that put again, have an axial groove on this pressure-bearing cover 8, be used to place two coils and be connected to outside cabling.The sealing ring 7 that pressure-bearing cover 8 and shading ring 30 are combined closely with frictionally between insulation inner core 6 and external insulation sleeve 12 (sidewall of lower sealing cover) towards the one side of top cover labyrinth 5 is pushed down, thereby is fixed.During work, the electromagnetic wave of transmitting coil 9 emissions is received by receiving coil 10 after the fluid coupling of 6 of insulation inner cores, and via line is delivered to external circuit again, and external circuit is judged to the received signal, realizes the measurement to resistivity.
Conductivity measuring apparatus 3 in the utility model comprises interior insulation sleeve 15, should be arranged with interior seal 17 outside the interior insulation sleeve 15, sealing body 17 is to be made by metal material, seal 17 is provided with metal inner core 21, when the cavity of fluid in this conductivity measuring apparatus 3 flows, metal inner core 21 and seal 17 constitute the two poles of the earth of electric capacity, are coupled by fluid between the 3rd cavity between two electrodes of electric capacity, and then determine the size of detected conductivity of fluid according to the value of resultant electric capacity.In concrete installation process, adopt 19 pairs of metal inner cores of insulated enclosure seat to fix.
In the well logging process, adopt the utility model to carry out sensing, transmitting coil 9 launching electromagnetic waves in the resistivity test device 2 of the present utility model, electromagnetic wave is through after the coupling of liquid, receive by receiving coil 10, and this signal sent, outside treatment circuit can calculate the resistivity of fluid by analyzing the power of received signal.And conductivity measuring apparatus 3 is the two poles of the earth that the metal inner core 21 that separated by insulating material and seal 17 have formed electric capacity in the middle of the utility model structure, two interpolars have fluid to flow through, the conductivity of fluid size directly has influence on the size of electric capacity, with this capacitance series in oscillatory circuit, can measure electric capacity according to oscillation frequency, thereby derive conductivity of fluid.
Sensor of the present utility model can use in a plurality of technical fields, has very strong usability, when the utility model uses at high temperature and high pressure environment, need between the shell of sensor and body seal element be set, to guarantee the normal circulation of fluid.
Sensor described in the utility model gets final product its grafting when installing in regular turn in the enclosure, and is easy for installation, and compact conformation is easy to use in measuring process; In addition, because the resistivity that employing resistivity sensor and conductivity sensor are measured and the scope of conductivity are inequality, so the utility model combines both, structure integrates, just can when measuring, measure two parameters simultaneously,, especially be applied in the oil exploitation process to obtain accurate measurement result, measure simultaneously, improve very much the precision of measuring on the large program; Of the present utility model in addition simple in structure, compactness, easy for installation, have very strong practicality.
Claims (8)
1, a kind of resistivity and conductivity sensor of plug-in, be inserted in the body of pick-up unit, comprise shell, it is characterized in that, this shell by be spirally connected or engage on, lower sealing cover two parts constitute, the lower sealing cover sidewall is an insulator, on in the space of lower sealing cover, following grafting is provided with resistivity test device and conductivity measuring apparatus, the sidewall of the top cover labyrinth of this shell is provided with the fluid intake for fluid flow, the sidewall of lower sealing cover is provided with the fluid egress point of circulation for liquid, wherein, resistivity test device, form first cavity that communicates with fluid intake between lower sealing cover sidewall and the top cover labyrinth, fluid flows into first cavity by the top cover labyrinth through hole, the inside of resistivity test device and conductivity measuring apparatus has second cavity with the first cavity conducting, conductivity measuring apparatus, be formed with the 3rd cavity that is connected with second cavity and fluid egress point between lower sealing cover sidewall and the lower sealing cover.
2, the resistivity and conductivity sensor of a kind of plug-in according to claim 1, it is characterized in that, described resistivity test device comprises insulation inner core, transmitting coil, receiving coil, shading ring and interior pressure-bearing cover, should be set in insulation inner core outside by interior pressure-bearing cover, described transmitting coil and receiving coil are set on the insulation inner core, and two coils are located at respectively in the space that is made of shading ring and interior pressure-bearing pipe.
3, the resistivity and conductivity sensor of a kind of plug-in according to claim 2 is characterized in that, described insulation inner core is a hollow tubular; The pressure-bearing pipe is a metal material in described; Described shading ring is made up of cylindrical shape shielding plate and the inside toroidal membrane that forms, and described receiving coil and transmitting coil are located at respectively in two cells that are made of shading ring and interior pressure-bearing pipe.
4, the resistivity and conductivity sensor of a kind of plug-in according to claim 3 is characterized in that, described shading ring is arranged with the pressure-bearing cover outward, and this pressure-bearing puts and has an axial groove, places the cabling that emission and receiving coil are connected with external circuit.
5, the resistivity and conductivity sensor of a kind of plug-in according to claim 4 is characterized in that, described pressure-bearing cover and shading ring are pushed down fixing towards the one side of top cover labyrinth by the sealing ring that is combined between insulation inner core and the lower sealing cover sidewall.
6, the resistivity and conductivity sensor of a kind of plug-in according to claim 1, it is characterized in that, described conductivity measuring apparatus comprises interior insulation sleeve, metal inner core and seal, the second interior cavity of second cavity that forms between insulation sleeve and the seal in described and resistivity test device is communicated with, described metal inner core and seal constitute the two poles of the earth of electric capacity, the coupling of fluid through between the 3rd cavity between the two.
7, the resistivity and conductivity sensor of a kind of plug-in according to claim 6 is characterized in that, described metal inner core is fixed by the insulated enclosure seat.
8, the resistivity and conductivity sensor of a kind of plug-in according to claim 1 is characterized in that, described lower sealing cover is provided with cable hole, and this cable hole adopts the sealing-plug sealing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520133499XU CN2840073Y (en) | 2005-11-24 | 2005-11-24 | Plugging electrical resistivity conductivity sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU200520133499XU CN2840073Y (en) | 2005-11-24 | 2005-11-24 | Plugging electrical resistivity conductivity sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2840073Y true CN2840073Y (en) | 2006-11-22 |
Family
ID=37428054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU200520133499XU Expired - Fee Related CN2840073Y (en) | 2005-11-24 | 2005-11-24 | Plugging electrical resistivity conductivity sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2840073Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101685115B (en) * | 2008-09-28 | 2011-11-09 | 上海比亚迪有限公司 | Method for testing electrical conductivity of powdered material |
| CN101251007B (en) * | 2008-03-27 | 2012-04-18 | 中国海洋石油总公司 | Inserting-mounting type electrohydraulic integration device |
| CN102520247A (en) * | 2011-10-26 | 2012-06-27 | 中国石油集团西部钻探工程有限公司 | Slurry resistivity measuring device |
| CN104265285A (en) * | 2014-09-23 | 2015-01-07 | 中国海洋石油总公司 | Device for measuring resistivity of oil-base mud |
-
2005
- 2005-11-24 CN CNU200520133499XU patent/CN2840073Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101251007B (en) * | 2008-03-27 | 2012-04-18 | 中国海洋石油总公司 | Inserting-mounting type electrohydraulic integration device |
| CN101685115B (en) * | 2008-09-28 | 2011-11-09 | 上海比亚迪有限公司 | Method for testing electrical conductivity of powdered material |
| CN102520247A (en) * | 2011-10-26 | 2012-06-27 | 中国石油集团西部钻探工程有限公司 | Slurry resistivity measuring device |
| CN102520247B (en) * | 2011-10-26 | 2014-04-02 | 中国石油集团西部钻探工程有限公司 | Slurry resistivity measuring device |
| CN104265285A (en) * | 2014-09-23 | 2015-01-07 | 中国海洋石油总公司 | Device for measuring resistivity of oil-base mud |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20061122 Termination date: 20131124 |