CN201188092Y - Multi-channel resistance type detector for oil-water interface - Google Patents
Multi-channel resistance type detector for oil-water interface Download PDFInfo
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- CN201188092Y CN201188092Y CNU2008200800223U CN200820080022U CN201188092Y CN 201188092 Y CN201188092 Y CN 201188092Y CN U2008200800223 U CNU2008200800223 U CN U2008200800223U CN 200820080022 U CN200820080022 U CN 200820080022U CN 201188092 Y CN201188092 Y CN 201188092Y
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Abstract
The utility model relates to a multi-channel resistance type oil-water interface detector which is applied to the downhole oil-water interface detection during the construction of the salt cavern gas storage. The multi-channel resistance type oil-water interface detector is characterized in that ground test equipment is connected with a testing sensor through a three-five core armored cable. The armored cable is fixed on an intermedium tube by using a cable fixing clamp. The quantity of downhole testing sensors is three to five. Each switch in a detecting button switch group is respectively and correspondingly connected with the downhole testing sensors connected with one core wire of the armored cable. The testing sensor adopts the structure that 10-20 sense resistors are fixed inside a casing body, one end of the sense resistors is respectively connected with a stainless steel contact, and the other end is respectively connected to a bus inside the sensor. The multi-channel resistance type oil-water interface detector has the advantages that the influence of the downhole high temperature to the internal circuit of the sensor is reduced, and the underground working life of the sensor is improved; the quantity of the circuit devices inside the sensor is reduced, and the enhanced sealing reliability during the processing and manufacturing process of the sensor is favorable.
Description
Technical field
The utility model belongs to the underground oil-water interface checkout equipment of using in the salt hole air reserved storeroom construction
Prior art
Consult Fig. 1.In the salt hole air reserved storeroom process of construction, be by the down-hole pipe core continuously to the salt deposit water filling, the dissolving salt deposit, the bittern with saliferous is expelled to ground continuously by the annular space between pipe core and the intervalve again, reaches the purpose of making the chamber in salt deposit.In order to control the cavity geometry that the dissolving salt deposit forms in the salt deposit, need in the annular space of the intervalve and the borehole wall, to inject predetermined depth as in the diesel oil arrival salt deposit of resistance solvent.Salt deposit solubilized under this degree of depth, the above salt deposit of this degree of depth then can not dissolve, and forms the cavity of making reservation shape in the design of chamber thus in salt deposit.For diesel oil being injected into the predetermined depth position, the water-oil interface detecting sensor must be installed on the intervalve outer wall of predetermined depth position, detect injection diesel oil and whether arrive predetermined depth, so that in time adjust, assurance safety is made the chamber.
Existing water-oil interface detector is made up of ground checkout equipment and downhole detection sensor, links to each other by single core sheathed cable.There is weak point both ways in existing water-oil interface detector.The one, in making the chamber process, along with cavity increases, it is that the water-oil interface position need constantly adjust upward that diesel oil injects the predetermined depth position, and scope can reach tens of rice.And existing water-oil interface detector generally only uses a detecting sensor to be fixedly mounted on the intervalve, can't adjust upward to satisfy water-oil interface and detect requirement.Adopt a plurality of sensors to be installed in each predetermined oil water termination depth location, connect with single core cable again, can satisfy the requirement of sensing range, but will make cable connectors quantity between detecting sensor and the used single core cable be about two times of used number of sensors.Because the shared same single core cable of multisensor, this will cause arbitrary web member fault that all sensors was lost efficacy.Under present down-hole high-temperature and high-pressure conditions, web member connects into power and is about 70% between detecting sensor and the used single core cable.The two times of numbers 70% that power is about used number of sensors that connect into of multisensor series system multiply each other, and this value crosses low so that in fact the multisensor series system can't be applied to the underground oil-water interface detects.On the other hand, on the downhole detection sensor of existing water-oil interface detector 20 left and right sides check points are arranged, the testing circuit that corresponding each check point sensor internal mainly is made up of integrated circuit.Under the high-temperature and high-pressure conditions of down-hole, water-oil interface detecting sensor internal electronic device is many more, and the probability that breaks down is big more.Because the electronic circuit of inner all corresponding each check points of detecting sensor is parallel connection, so inner any one electron device of detecting sensor short circuit occurs or leak current fault will cause whole detecting sensors to lose efficacy.
The utility model content
The purpose of this utility model is: a kind of hyperchannel resistance-type water-oil interface detector is provided, adopts multichannel technology can realize that FUSION WITH MULTISENSOR DETECTION builds the chamber requirement to satisfy salt hole air reserved storeroom.On the other hand, the utility model adopts resistor as the unique testing circuit device in the downhole detection sensor, simplified the detecting sensor circuit, reduced detecting sensor fault probability, can satisfy the engine request of the continuous operate as normal in detecting sensor down-hole more than 3 years, overcome the deficiency that existing water-oil interface detector is difficult to realize FUSION WITH MULTISENSOR DETECTION.
The utility model hyperchannel resistance-type water-oil interface detector is made up of ground checkout equipment, sheathed cable and downhole detection sensor.Ground checkout equipment links to each other by 3～5 core sheathed cables with detecting sensor.The quantity of downhole detection sensor is 3～5.
Comprise in the ground checkout equipment and detect power supply, voltage table, reometer and 3～5 test button switches.3～5 corresponding respectively downhole detection sensors that heart yearn connected of sheathed cable that connect of test button switch.
The structure of detecting sensor is: housing is made by the resin-based insulating material, and hull shape is half-cylindrical.Be fixed with 10～20 detection resistance that resistance value is identical in enclosure interior, each end that detects resistance connects a stainless steel contact respectively, and each other end that detects resistance all is connected on the sensor internal bus.The stainless steel contact is fixed on hull outside, and distance equates between adjacent two stainless steel contacts, and the spacing of stainless steel contact is between 10-20 centimetre.
For 3～5 core sheathed cables and detecting sensor are realized being connected, adopt cable converter to convert 3～5 core sheathed cables to 3～5 steel pipe cables, every steel pipe cable links to each other with a detecting sensor.
End at the detecting sensor housing is fixed with cable connector, in order to realize being tightly connected between steel pipe cable and detecting sensor.
In order to adapt to the well site power supply, the detection power supply of ground checkout equipment can be AC power or direct supply, uses the well site in well site that AC power is arranged or AC-less power respectively.
It on the detecting sensor measured medium.The measured medium type depends on the notes diesel oil deep, or is the diesel oil of insulator, or is the bittern (salt solution) of conductor.Detection power supply one end in the ground checkout equipment connects a heart yearn in the sheathed cable, another termination sheathed cable outer armor (the earth) through reometer, pushbutton switch.Connect voltage table between two detection end points.By the earth conductivity theory as can be known, therefore the earth conductive resistance can not consider the influence of the earth conductive resistance near zero in testing process.Because the salt hole air reserved storeroom degree of depth generally is no more than two kms, every heart yearn resistance of 3 core sheathed cables is in tens of ohm of scopes.All detect the resistance in parallel of resistor greater than three orders of magnitude of cable core resistance in every sensor, when promptly reaching tens of kilohms, then because resistances in parallel of interior all the detection resistors of sensor are thousands of ohms, much larger than the cable core resistance, thereby when carrying out the water-oil interface detection, the cable core resistance can be ignored for the influence of measuring accuracy.Because can not consider the influence of ground resistance and cable core resistance, the detection computations process is simplified.When carrying out the water-oil interface detection, press the button switch connection and detect the loop, when measured medium is diesel oil between stainless steel contact on the detecting sensor and the open hole section (the earth), sensor internal that should the stainless steel contact is detected the resistor no current pass through; When measured medium was bittern (salt solution) between stainless steel contact and the open hole section (the earth), sensor internal that should the stainless steel contact is detected resistor had electric current to pass through.The measuring voltage value that reads by voltage table from ground checkout equipment can calculate and detect the loop resistance value divided by the detection current value that reads from reometer.Divided by the detection loop resistance value that calculates, can obtain a round values with the resistance of a detection resistor in the known sensor, this round values is the resistance circuit number of conducting in the sensor.The resistance circuit number of conducting be multiply by the spacing between the stainless steel contact, the depth value of sensor base stainless steel contact correspondence can obtain the oil pad interface height value when adding upper sensor and installing, and realizes the measurement of oil pad interface again.
The rock gas salt hole air reserved storeroom is made in the process of chamber, and the utility model is for adapting to the requirement that measurement range changes, and detecting sensor adopts multiple spot continuous coverage mode to measure.The gap is generally 10-20 centimetre between two measurement points, can set according to the needs of measuring accuracy.The downhole detection sensor length is generally two meters, and 10-20 measurement point arranged.Install in the process of going into the well at the downhole detection sensor, according to making chamber engineering design requirement, three detecting sensors are installed in the different chamber height and positions of making respectively, link to each other with a single core steel pipe cable respectively.Three detecting sensors generally are separated by tens of meters, to satisfy the constantly upwards detection requirement of expansion of several years inner chamber body.Survey sensor all uses the resin-based insulating material to make, and the survey sensor of making is long semicylinder, and thickness generally is not more than 20 millimeters, only to guarantee to be lowered to smoothly between intervalve and the sleeve pipe in more than 20 millimeter the annular space.Each measurement point on the detecting sensor is made of a detection resistor and a stainless steel contact.Detect resistor and be sealed in the resin-based insulating material, seal withstand voltage reaching more than the 25MPa, make in the process of chamber at salt hole air reserved storeroom, work that can be reliably and with long-term in high temperature, hyperbaric environment above 1500 meters well depths to guarantee detecting sensor.The stainless steel contact is a disc, diameter 8--10 millimeter is embedded on the survey sensor surface of being made by the resin-based insulating material, and the inboard is linked to each other with the relevant detection resistor by lead, the outside is in the surface of detecting sensor, can directly contact with measured medium lubricating pad or bittern.
Effect of the present utility model is: only use the detection resistor can reduce the influence of down-hole high temperature to the sensor internal circuit in the utility model hyperchannel resistance-type water-oil interface detector, improved the sensor underground work life-span; Sensor internal circuit devcie quantity reduces, and helps improving the sealing reliability in the sensor processing and manufacturing process.
Cable converter in the utility model has been realized one three core sheathed cable is changed into three single core steel pipe cables at down-hole proximity transducer place, every single core steel pipe cable connects a sensor, realized that each sensor has own independent detection passage, be independent of each other, can avoid using single core sheathed cable, arbitrary the sensor that occurs during the multisensor series connection breaks down and causes all sensors to be subjected to it to influence the situation of cisco unity malfunction, make to connect into power and be 90%, but detect the detection means that water-oil interface provide practical application for using multisensor to be applied to the down-hole multistage.
Description of drawings
Fig. 1 is that salt hole air reserved storeroom is built chamber process water-oil interface detection synoptic diagram.
Fig. 2 is a detecting sensor profile synoptic diagram.
Fig. 3 is a detecting sensor structural profile synoptic diagram.
Fig. 4 is the utility model hyperchannel resistance-type water-oil interface detector syndeton synoptic diagram.
Fig. 5 is the utility model hyperchannel resistance-type water-oil interface detector principle schematic.
Embodiment
Embodiment 1: to connect 3 detecting sensors 2 is example, and the utility model is described in further detail.
Consult Fig. 1.Hyperchannel resistance-type water-oil interface detector is made up of ground checkout equipment, sheathed cable 8 and downhole detection sensor 2.Ground checkout equipment links to each other by 3 core sheathed cables 8 with detecting sensor 2.Sheathed cable 8 uses cable fixing clamp/clip to be fixed on the intervalve 1.The quantity of downhole detection sensor 2 is 3.
Comprise in the ground checkout equipment and detect power supply 4, a voltage table, a reometer and 3 test button switches 7.Voltage table is connected in parallel on the two ends of power supply 4 and switch 5.Detecting power supply 4, reometer and 3 test button switches 7 is connected in series; One group of corresponding respectively heart yearn that connects 3 core sheathed cables 8 of 3 test button switches 7.3 core sheathed cables 8 adopt cable converter 14 to convert 3 core sheathed cables to 3 steel pipe cables 15 in the upper end of 3 detecting sensors 2, and every steel pipe cable 15 links to each other with a detecting sensor 2.
The structure of detecting sensor 2 is: housing 9 is made by the resin-based insulating material, and housing 9 is shaped as semicylinder.The length of semicylinder is generally two meters.In housing 9 internal fixation 10 detection resistance 10 that resistance value is identical are arranged, each end that detects resistance 10 connects a stainless steel contact 11 respectively, and each other end that detects resistance 10 all is connected to detecting sensor internal bus 12.Internal bus 12 is connected by the heart yearn of cable connectors with steel pipe cable 15.Stainless steel contact 11 is fixed on housing 9 outsides, and distance all equates between adjacent two stainless steel contacts 11, and the spacing of stainless steel contact 11 is 10--20 centimetre.Being fixed with cable connector 13 in housing 9 ends is used for connecting between steel pipe cable and the detecting sensor.
The power supply of ground checkout equipment is AC power or direct supply, supply voltage at tens of volts between hundreds of volts.
The utility model requires three detecting sensors 2 to be installed on the corresponding intervalve 1 corresponding column according to the detection design degree of depth in intervalve 1 is gone into the well process.Three steel pipe cables 15 are linked to each other respectively with three detecting sensors 2.With cable converter 14 protective cradle of packing into.In the process of going into the well, use fixation clamp that three core sheathed cables 8 are fixed on the every column of going into the well.Because three core sheathed cables, 8 outer armors link to each other with intervalve 1, intervalve 1 becomes the part that oil pad interface detector detects the loop.After detecting sensor 2 and three core sheathed cables 8 are gone into the well and finished, three core sheathed cables 8 are linked to each other with the uphole equipment of water-oil interface detector on ground.
After the rock gas salt hole air reserved storeroom was made the chamber commencement of works, injected oily diesel oil the sixth of the twelve Earthly Branches between intervalve and sleeve pipe.When need detect the interphase of diesel oil and bittern, open uphole equipment power switch 5, voltage table 3 display power supply magnitudes of voltage, press three pushbutton switches 7 any, the current value to downhole detection sensor 2 that should pushbutton switch 5 is flow through in reometer 6 demonstrations.With supply voltage value divided by detecting current value, conduction resistance value that can this downhole detection sensor 2.Interior one of detecting sensor 2 is detected resistance 10 rated value of resistance divided by this conduction resistance value, can obtain to detect in this detecting sensor 2 the conducting number of resistance, the conducting number that will detect resistor 2 again multiply by the distance values of 11 of stainless steel contacts, add the bottom starting point depth value that this detecting sensor is installed, can calculate the interfacial degree of depth of lubricating pad and bittern.
Claims (5)
1, a kind of hyperchannel resistance-type water-oil interface detector, mainly form by ground checkout equipment, sheathed cable (8) and downhole detection sensor (2), it is characterized in that: ground checkout equipment links to each other by 3～5 core sheathed cables (8) with detecting sensor (2), and the quantity of downhole detection sensor (2) is 3～5;
Comprise in the ground checkout equipment and detect power supply (4), voltage table, reometer and 3～5 test button switches (7), the corresponding respectively downhole detection sensor (2) that heart yearn connected that connects sheathed cable (8) of 3～5 test button switches (7);
The structure of detecting sensor (2) is: housing (9) is made by the resin-based insulating material, housing (9) is shaped as half round post, in housing (9) internal fixation 10～20 detection resistance (10) that resistance value is identical are arranged, each end that detects resistance (10) connects stainless steel contact (11) respectively, each other end that detects resistance (10) connects sensor internal bus (12) respectively, stainless steel contact (11) is fixed on housing (9) outside, distance equates between adjacent two stainless steel contacts (11), and the spacing of stainless steel contact (11) is between 10-20 centimetre.
2, according to claims 1 described hyperchannel resistance-type water-oil interface detector, it is characterized in that: adopt cable converter (14) to convert 3～5 core sheathed cables (8) to 3～5 steel pipe cables (15), every steel pipe cable (15) links to each other with a detecting sensor 2.
3, it is characterized in that according to claims 1 described hyperchannel resistance-type water-oil interface detector: the power supply of ground checkout equipment (4) is AC power or direct supply.
4, it is characterized in that according to claims 1 described hyperchannel resistance-type water-oil interface detector: be fixed with cable connector (13) in an end of housing (9).
5, it is characterized in that according to claims 1 described hyperchannel resistance-type water-oil interface detector: stainless steel contact (11) are disc, 8～15 millimeters of diameters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200800223U CN201188092Y (en) | 2008-04-17 | 2008-04-17 | Multi-channel resistance type detector for oil-water interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200800223U CN201188092Y (en) | 2008-04-17 | 2008-04-17 | Multi-channel resistance type detector for oil-water interface |
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| Publication Number | Publication Date |
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| CN201188092Y true CN201188092Y (en) | 2009-01-28 |
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| Application Number | Title | Priority Date | Filing Date |
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| CNU2008200800223U Expired - Lifetime CN201188092Y (en) | 2008-04-17 | 2008-04-17 | Multi-channel resistance type detector for oil-water interface |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477862A (en) * | 2010-11-23 | 2012-05-30 | 中国石油天然气股份有限公司 | Application of detector (for acquiring underground oil-water interfaces) controlled by portable computer |
| CN104501906A (en) * | 2014-12-30 | 2015-04-08 | 中国石油天然气集团公司 | Series resistance type underground oil-water interface detection system controlled by pressure-controlled switch |
| CN104500041A (en) * | 2014-12-30 | 2015-04-08 | 中国石油天然气集团公司 | Series-type underground oil-water interface detection system controlled by pressure-controlled switch |
| CN104515569A (en) * | 2014-12-30 | 2015-04-15 | 中国石油天然气集团公司 | Underground oil and water interface detection system with series-parallel resistor controlled by pressure-controlled switch |
| CN104614041A (en) * | 2014-12-30 | 2015-05-13 | 中国石油天然气集团公司 | Series-parallel connection type underground oil-water interface detecting system controlled by pressure control switch |
| CN106092256A (en) * | 2015-05-01 | 2016-11-09 | 中国石油天然气集团公司 | Underground oil-water interface detector |
| CN106197605A (en) * | 2015-05-04 | 2016-12-07 | 中国石油天然气集团公司 | Oil-water interfaces detecting system and the method in chamber is made for salt hole air reserved storeroom |
-
2008
- 2008-04-17 CN CNU2008200800223U patent/CN201188092Y/en not_active Expired - Lifetime
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102477862A (en) * | 2010-11-23 | 2012-05-30 | 中国石油天然气股份有限公司 | Application of detector (for acquiring underground oil-water interfaces) controlled by portable computer |
| CN102477862B (en) * | 2010-11-23 | 2014-08-06 | 中国石油天然气股份有限公司 | Application of detector (for acquiring underground oil-water interfaces) controlled by portable computer |
| CN104501906A (en) * | 2014-12-30 | 2015-04-08 | 中国石油天然气集团公司 | Series resistance type underground oil-water interface detection system controlled by pressure-controlled switch |
| CN104500041A (en) * | 2014-12-30 | 2015-04-08 | 中国石油天然气集团公司 | Series-type underground oil-water interface detection system controlled by pressure-controlled switch |
| CN104515569A (en) * | 2014-12-30 | 2015-04-15 | 中国石油天然气集团公司 | Underground oil and water interface detection system with series-parallel resistor controlled by pressure-controlled switch |
| CN104614041A (en) * | 2014-12-30 | 2015-05-13 | 中国石油天然气集团公司 | Series-parallel connection type underground oil-water interface detecting system controlled by pressure control switch |
| CN106092256A (en) * | 2015-05-01 | 2016-11-09 | 中国石油天然气集团公司 | Underground oil-water interface detector |
| CN106092256B (en) * | 2015-05-01 | 2020-03-10 | 中国石油天然气集团公司 | Underground oil-water interface detector |
| CN106197605A (en) * | 2015-05-04 | 2016-12-07 | 中国石油天然气集团公司 | Oil-water interfaces detecting system and the method in chamber is made for salt hole air reserved storeroom |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090128 |