CN104500041A - Series-type underground oil-water interface detection system controlled by pressure-controlled switch - Google Patents
Series-type underground oil-water interface detection system controlled by pressure-controlled switch Download PDFInfo
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- CN104500041A CN104500041A CN201410841174.0A CN201410841174A CN104500041A CN 104500041 A CN104500041 A CN 104500041A CN 201410841174 A CN201410841174 A CN 201410841174A CN 104500041 A CN104500041 A CN 104500041A
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- oil
- water interface
- interface detection
- control switch
- detecting sensor
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- E—FIXED CONSTRUCTIONS
- E21—EARTH DRILLING; MINING
- E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B47/00—Survey of boreholes or wells
- E21B47/04—Measuring depth or liquid level
- E21B47/047—Liquid level
Abstract
The invention provides a series-type underground oil-water interface detection system controlled by a pressure-controlled switch. The series-type underground oil-water interface detection system controlled by the pressure-controlled switch comprises a ground detector and an oil-water interface detection sensor group, wherein the oil-water interface detection sensor group is connected with the ground detector through an armor cable, and is composed of four oil-water interface detection sensors. By virtue of the series-type underground oil-water interface detection system controlled by the pressure-controlled switch, which is composed of the four oil-water interface detection sensors and the ground detector, an underground oil-water interface can be measured; continuous measurement of the underground oil-water interface is achieved; the detection depth and the measurement accuracy of the underground oil-water interface are improved; the lifting frequency of a cavity-building outer pipe is reduced; the cavity-building cost is reduced; the measurement requirements of a novel cavity-building engineering technology for building cavities in reverse circulation on the underground oil-water interface are met.
Description
Technical field
The present invention makes chamber field of engineering technology about salt hole air reserved storeroom, particularly about the detection technique at the topping interface for controlling underground salt cave cavity geometry, is that a kind of votage control switch controls tandem underground oil-water interface detection systems concretely.
Background technology
Salt hole air reserved storeroom make chamber engineering be used to complete the work of creeping into make chamber well, in the salt deposit of down-hole, fresh water is injected continuously pipe from making in chamber, bittern is transformed into by dissolving rock salt, again by bittern by making in chamber pipe and the annular space made between the outer tube of chamber is expelled to ground continuously, thus the storage area forming certain volume specific modality in the salt deposit of down-hole is as gas storage.Making in the process of chamber; in order to ensure that this storage area reaches designing requirement; the diesel oil injected in the annular space making chamber outer tube and production casing and the borehole wall as protective layer material is needed to arrive the depth location of engineering design; effectively to control the depth bounds of fresh water dissolution rock salt; what control salt hole air reserved storeroom makes chamber process, until complete salt hole air reserved storeroom to make chamber engineering.In order to the chamber process of making at salt hole air reserved storeroom is made chamber according to schedule and prevents the major accidents such as roof fall, in the process that constantly must expand at down-hole cavity, the strict position controlling oil-water interfaces, makes chamber safe construction to ensure.For realizing this purpose, underground oil-water interface detector need be used to detect underground oil-water interface making chamber overall process.
The oil-water interfaces detection method of current employing is oil-water interfaces sensor to be arranged on to be made on the outer tube outer wall of chamber, with making chamber outer tube G.I.H.Oil-water interfaces sensor is connected with ground checkout equipment by cable, can detect injection diesel oil and whether arrive projected depth, to adjust in time, ensures that safety makes chamber.
Making in the process of chamber, along with cavity increases, the projected depth of oil-water interfaces needs constantly to adjust upward, and scope can reach nearly hundred meters.Existing detector for oil-water interface is generally that use cable connects 1 detecting sensor and carries out oil-water interfaces detection.For meet up to tens of meters of salt hole air reserved storerooms make that chamber process oil-water interfaces detect needs, must pass through in engineer operation constantly and carry installation tubing string, adjustment detecting sensor depth location, to meet the requirement of underground oil-water Interface detection depth bounds.This situation significantly increases the use cost of detector for oil-water interface, is unfavorable for applying of detector for oil-water interface.For expanding the detection range of detector for oil-water interface, a cable series connection can be adopted to connect 3 detecting sensors, being separated by according to requirement of engineering between 3 detecting sensors, certain length is interval to be installed, expand oil-water interfaces detection range, decrease to carry and tubing string engineer operation number of times is installed, reduce salt hole air reserved storeroom and make chamber engineering cost.But 3 detecting sensor detection oil-water interfaces are still on the low side, should increase the quantity of downhole detection sensor when development new technologies as far as possible.Meanwhile, downhole detection sensor long period of soaking is in bittern, and the stube cable between the connector of sensor and cable and sensor exists and slightly leaks electricity, and affects the normal measurement of oil-water interfaces, must seek the technical scheme eliminating effect of leakage.
Above-mentioned detector for oil-water interface adopts a cable series connection to connect 3 downhole detection sensors, expands oil-water interfaces detection range, decreases to carry to install tubing string engineer operation number of times, reduces salt hole air reserved storeroom and makes chamber engineering cost.But in actual applications, generally application is installed after 1 year at detector for oil-water interface, because the stube cable between downhole detection sensor is in the bittern of HTHP for a long time, occurs aging, there is slight electric leakage in various degree.And the connector be in for a long time with cable in the detecting sensor in HTHP bittern, also because aging appearance is slightly leaked electricity.The impact of two aspect electric leakages, will cause detector for oil-water interface normally to work.
Two aspects electric leakages to affect detailed process as follows: carry out oil-water interfaces when detecting, when first using the 1st, bottom detecting sensor to carry out oil-water interfaces detection, the stube cable between measurement cable, all detecting sensors and the connector of all detecting sensors and cable are all in diesel oil.Due to the insulating effect of diesel oil, the slight electric leakage of above-mentioned existence all disappears, and normally detecting oil-water interfaces to the 1st, bottom detecting sensor does not affect.When using the 2nd detecting sensor above the detecting sensor of the 1st, bottom to carry out oil-water interfaces detection, cable connectors in the detecting sensor of the 1st, bottom and stube cable are in bittern all slight electric leakage, normally detects oil-water interfaces have an impact to the 2nd detecting sensor.When using the 3rd detecting sensor above the detecting sensor of the 2nd, bottom to carry out oil-water interfaces detection, cable connectors in the 1st, bottom detecting sensor and the 2nd detecting sensor and stube cable are in bittern all slight electric leakage, normally detects oil-water interfaces produce larger impact to the 3rd detecting sensor.The chamber engineering in general of making of a salt hole air reserved storeroom needs can complete for 5 to 6 years, and underground oil-water interface detector must ensure normally can detect oil-water interfaces all the time during this period.When these electrical leakage quantities exceed admissible value, detector for oil-water interface will be caused cannot to carry out the normal detection of oil-water interfaces.
Summary of the invention
In order to the detector for oil-water interface solving oil-water interfaces detection scheme in prior art cannot meet the difficult problem that underground oil-water Interface detection depth bounds requires, the invention provides a kind of votage control switch and control tandem underground oil-water interface detection systems, by arranging testing circuit and stainless steel contact on base plate, achieve and normally can complete testing for a long time in the hot environment of 90 DEG C and the hyperbaric environment of 25Mpa, the construction adapting to China's salt hole air reserved storeroom has started to develop to deep-well, to the oil-water interface detection sensor of the more high performance requirements use that the checkout equipment of oil-water interfaces proposes, the votage control switch that is made up of 4 oil-water interface detection sensors and ground detector controls tandem underground oil-water interface detection systems can oil-water interfaces under measuring well, realize the continuous measurement at underground oil-water interface.
The object of the invention is, provide a kind of votage control switch to control tandem underground oil-water interface detection systems, comprise a ground detector; One oil-water interface detection sensor group, is connected with described ground detector by armored cable; Described oil-water interface detection sensor group is made up of 4 oil-water interface detection sensors.
Preferably, 4 described oil-water interface detection sensors are connected mutually.
Preferably, described oil-water interface detection sensor comprises: base plate; Be arranged on the testing circuit on described base plate, described testing circuit comprises multiple constant-current source circuit and multiple diode, and each described constant-current source circuit one end is in parallel, the other end is connected with the negative terminal of diode described in; Be embedded in the multiple stainless steel contacts on described base plate, each described stainless steel contact is connected with the anode of diode described in.
Preferably, the quantity of described constant-current source circuit is identical with the quantity of the quantity of described diode, described stainless steel contact.
Preferably, the quantity of described constant-current source circuit is 5.
Preferably, described oil-water interface detection sensor also comprises the cable seal connector being arranged on upper end.
Preferably, described oil-water interface detection sensor also comprises the cable seal connector being arranged on upper end, the cable seal connector being arranged on bottom.
Preferably, described oil-water interface detection sensor also comprises the votage control switch between parallel wire and the cable seal connector of described bottom being arranged on described constant-current source circuit.
Preferably, described base plate is made up of resin-based insulation materials.
Preferably, described stainless steel contact is wafer type, forms by inlaying the contact that is solidificated on described backplate surface and inlaying the round bar portion be solidificated in described base plate.
Preferably, the thickness of described oil-water interface detection sensor is less than 20 millimeters, and most high sealability is withstand voltage is 25Mpa, and it is 2500 meters that maximum oil water termination detects the degree of depth, and maximum operating temperature is 90 DEG C.
Preferably, described armored cable is single core armored cable.
Preferably, described ground detector comprises voltage stabilizing and detects power supply, detects the detection ammeter that power supply is connected and the sense switch be connected with described detection ammeter with described voltage stabilizing.
Beneficial effect of the present invention is, provide a kind of votage control switch and control tandem underground oil-water interface detection systems, by arranging testing circuit and stainless steel contact on base plate, achieve and normally can complete testing for a long time in the hot environment of 90 DEG C and the hyperbaric environment of 25Mpa, the construction adapting to China's salt hole air reserved storeroom has started to develop to deep-well, to the oil-water interface detection sensor of the more high performance requirements use that the checkout equipment of oil-water interfaces proposes, the votage control switch that is made up of 4 oil-water interface detection sensors and ground detector controls tandem underground oil-water interface detection systems can oil-water interfaces under measuring well, realize the continuous measurement at underground oil-water interface, improve underground oil-water Interface detection depth bounds and certainty of measurement, reduce to make on the outer tube of chamber and carry number of times, reduce and make chamber cost, meet reacting cycle make chamber new make the measurement requirement of chamber engineering to underground oil-water interface.
For above and other object of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and coordinate institute's accompanying drawings, be described in detail below.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
The structured flowchart of the embodiment one of the oil-water interface detection sensor of a kind of votage control switch control tandem underground oil-water interface detection systems that Fig. 1 provides for the embodiment of the present invention;
The structured flowchart of the embodiment two of the oil-water interface detection sensor of a kind of votage control switch control tandem underground oil-water interface detection systems that Fig. 2 provides for the embodiment of the present invention;
Fig. 3 is the outline drawing that a kind of votage control switch provided by the invention controls the embodiment two of the oil-water interface detection sensor of tandem underground oil-water interface detection systems;
Fig. 4 is the sectional view that a kind of votage control switch provided by the invention controls the embodiment two of the oil-water interface detection sensor of tandem underground oil-water interface detection systems;
The structured flowchart of the embodiment three of the oil-water interface detection sensor of a kind of votage control switch control tandem underground oil-water interface detection systems that Fig. 5 provides for the embodiment of the present invention;
Fig. 6 is the outline drawing that a kind of votage control switch provided by the invention controls the embodiment three of the oil-water interface detection sensor of tandem underground oil-water interface detection systems;
Fig. 7 is the sectional view that a kind of votage control switch provided by the invention controls the embodiment three of the oil-water interface detection sensor of tandem underground oil-water interface detection systems;
The structured flowchart of a kind of votage control switch control tandem underground oil-water interface detection systems that Fig. 8 provides for the embodiment of the present invention;
Fig. 9 is the schematic diagram that a kind of votage control switch provided by the invention controls the specific embodiment of tandem underground oil-water interface detection systems;
Figure 10 is the concrete structure schematic diagram that a kind of votage control switch provided by the invention controls ground detector in tandem underground oil-water interface detection systems;
Figure 11 is the circuit theory diagrams that a kind of votage control switch provided by the invention controls the specific embodiment of tandem underground oil-water interface detection systems;
Figure 12 is the detection schematic diagram that salt hole air reserved storeroom makes chamber process oil-water interfaces.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.
The invention belongs to gas storage cavern and make chamber field of engineering technology, particularly a kind of topping Interface detection equipment for controlling salt cave cavity geometry.
Figure 12 is that salt hole air reserved storeroom makes chamber process oil-water interfaces detection schematic diagram.As shown in Figure 12,1 is ground detector, and 2 is water filling, and 3 is note diesel oil, and 4 manage for making in chamber, and 5 is sleeve pipe, and 6 is diesel oil, and 7 for making chamber outer tube, and 8 is oil-water interfaces, and 9 is row's bittern, and 10 is detecting sensor, and 11 is barefoot interval, and 12 is single core armored cable.Continuously to salt deposit water filling, dissolve salt deposit by making pipe in chamber, then the bittern of saliferous is expelled to ground continuously by making pipe and the annular space made between the outer tube of chamber in chamber, reach the object making chamber in salt deposit.In order to control to dissolve in salt deposit the cavity geometry that salt deposit is formed, diesel oil need be injected arrive desired depth in salt deposit in the annular space making chamber outer tube and the borehole wall.Salt deposit solubilized under this degree of depth, salt deposit more than this degree of depth then can not dissolve, and forms the cavity making predetermined shape in the design of chamber thus in salt deposit.In order to diesel oil is injected into desired depth position, must makes on the outer tube outer wall of chamber in desired depth position and oil-water interface detection sensor is installed, detect injection diesel oil and whether arrive desired depth, to adjust in time, ensure that safety makes chamber.
Oil-water interfaces detection system of the prior art is made up of ground detector 1 and downhole detection sensor 10, is connected by single core armored cable.It makes on the outer tube outer wall of chamber, with making chamber outer tube G.I.H for being arranged on by oil-water interface detection sensor.Oil-water interface detection sensor is connected with ground checkout equipment by cable, can detect injection diesel oil and whether arrive projected depth, to adjust in time, ensures that safety makes chamber.But making the increase along with cavity in the process of chamber, the projected depth of oil-water interfaces needs constantly to adjust upward, and scope can reach tens of rice.Existing detector for oil-water interface uses a cable only can connect a detecting sensor, cannot meet the requirement of underground oil-water Interface detection depth bounds.
When the present invention uses 4 detecting sensor series connection to carry out oil-water interfaces detection, 4 detecting sensors are arranged on each predetermined detection depth location respectively, then with single core armored cable, detecting sensor are connected in series.
The structured flowchart of a kind of votage control switch control tandem underground oil-water interface detection systems that Fig. 8 provides for the embodiment of the present invention, as shown in Figure 8, described votage control switch controls tandem underground oil-water interface detection systems and comprises:
One ground detector 1;
One oil-water interface detection sensor group 2, is connected with described ground detector 1 by armored cable;
Described oil-water interface detection sensor group 2 is made up of the oil-water interface detection sensor 200 described in 4.
In a particular embodiment, described oil-water interface detection sensor group 2 is made up of the oil-water interface detection sensor of 4 series connection.Therefore, underground oil-water interface detection systems of the present invention is the series and parallel compensated resistance formula underground oil-water interface detector that votage control switch controls.Also namely the present invention is made up of ground checkout equipment M, single core armored cable L, 4 downhole detection sensors D1, D2, D3, D4, D5.Ground checkout equipment M is connected by single core armored cable L with the detecting sensor D being positioned at down-hole.Detecting sensor D1, single core armored cable between D2, D3, D4, D5, is used to be connected in series.
A kind of votage control switch provided by the invention controls the structured flowchart of the embodiment one of the oil-water interface detection sensor of tandem underground oil-water interface detection systems as shown in Figure 1, and as shown in Figure 1, described oil-water interface detection sensor 200 comprises:
Base plate 201;
Be arranged on the testing circuit 202 on described base plate, described testing circuit comprises multiple constant-current source circuit 203 and multiple diode 204, and each described constant-current source circuit one end is in parallel, the other end is connected with the negative terminal of the diode described in;
Be embedded in the multiple stainless steel contacts 205 on described base plate, each described stainless steel contact is connected with the anode of diode described in.
The quantity of constant-current source circuit described in oil-water interface detection sensor provided by the invention is identical with the quantity of the quantity of diode, stainless steel contact respectively.As in the embodiment as shown in fig .4, the quantity of the quantity of constant-current source circuit, the quantity of diode, stainless steel contact is identical, is 5.Described base plate is made up of resin-based insulation materials.
Also be, the present invention is a kind of switch control rule tandem detector for oil-water interface, adopt constant-current source circuit as testing circuit device main in downhole detection sensor, oil-water interfaces under 4 detecting sensor series connection measuring wells, expand underground oil-water Interface detection depth bounds, reduce to make on the outer tube of chamber and carry number of times, reduce and make chamber cost, meet the needs of underground rock salt gas storage solution mining engineering.
The structured flowchart of the embodiment two of the oil-water interface detection sensor of a kind of votage control switch control tandem underground oil-water interface detection systems that Fig. 2 provides for the embodiment of the present invention, as shown in Figure 2, in embodiment two, described oil-water interface detection sensor 200 comprises:
Base plate 201;
Be arranged on the testing circuit 202 on described base plate, described testing circuit comprises multiple constant-current source circuit 203 and multiple diode 204, and each described constant-current source circuit one end is in parallel, the other end is connected with the negative terminal of the diode described in;
Be embedded in the multiple stainless steel contacts 205 on described base plate, each described stainless steel contact is connected with the anode of diode described in;
Be arranged on a cable seal connector 206 of upper end, for detecting being tightly connected between oil-water interface detection sensor and single core armored cable.
Fig. 3 is when the quantity of constant-current source circuit, the quantity of diode, the quantity of stainless steel contact are 5, the outline drawing of the embodiment two of oil-water interface detection sensor of the present invention, as shown in Figure 3, the base plate 201 be made up of polymer matrix composites of oil-water interface detection sensor provided by the invention and inlay the stainless steel contact 205 being solidificated in its upper surface and form.Oil-water interface detection sensor in this embodiment only has upper end to have cable seal connector 206 to be connected with armored cable.Long 1 meter of oil-water interface detection sensor.Stainless steel contact diameter is 10 millimeters.Spacing 200 millimeters between two stainless steel contacts.Every detecting sensor has 4 stainless steel contacts.Detecting sensor D1 only has single-endedly has cable seal connector to be connected with armored cable.
Fig. 4 is when the quantity of constant-current source circuit, the quantity of diode, the quantity of stainless steel contact are 5, the sectional view of the embodiment two of a kind of oil-water interface detection sensor of the present invention, as shown in Figure 4, described stainless steel contact 205 is wafer type, form by inlaying the contact 2051 that is solidificated on described backplate surface and inlaying the round bar portion 2052 be solidificated in described base plate, the round bar portion of stainless steel contact C, cable connectors base are all inlayed and are solidificated in the base plate of polymer matrix composites; Constant-current source circuit 203, the diode 204 of testing circuit, be connected wire between constant-current source circuit parallel wire 208 with all devices and cover by the polymer matrix composites similar with base plate institute landfill.On circuit, one end of all constant-current source circuits connects the negative terminal of diode, and the anode of diode connects stainless steel contact.The other end of constant-current source circuit is all connected with detection resistor coupled in parallel line.Oil-water interface detection sensor in the present embodiment is only single-ended cable connectors.
The structured flowchart of the embodiment three of a kind of oil-water interface detection sensor that Fig. 5 provides for the embodiment of the present invention, as shown in Figure 3, in embodiment three, described oil-water interface detection sensor 200 comprises:
Base plate 201;
Be arranged on the testing circuit 202 on described base plate, described testing circuit comprises multiple constant-current source circuit 203 and multiple diode 204, and each described constant-current source circuit one end is in parallel, the other end is connected with the negative terminal of the diode described in;
Be embedded in the multiple stainless steel contacts 205 on described base plate, each described stainless steel contact is connected with the anode of diode described in;
Be arranged on a cable seal connector 206 of upper end, be arranged on a cable seal connector 206 of bottom, for detecting being tightly connected between oil-water interface detection sensor and single core armored cable.
Be arranged on the votage control switch 207 between the parallel wire of described constant-current source circuit and the cable seal connector of described bottom.
Fig. 6 is when the quantity of constant-current source circuit, the quantity of diode, the quantity of stainless steel contact are 5, the outline drawing of the embodiment two of a kind of oil-water interface detection sensor provided by the invention, as shown in Figure 6, oil-water interface detection sensor provided by the invention is by polymer matrix composites base plate 201 and inlay the stainless steel contact 205 being solidificated in its upper surface and form.All there is cable connectors 206 at oil-water interface detection sensor two ends in the present embodiment.The cable seal connector at detecting sensor two ends is connected with armored cable.Long 1 meter of detecting sensor.Stainless steel contact diameter 10 millimeters.Spacing 200 millimeters between two stainless steel contacts.Every detecting sensor has 4 stainless steel contacts.All there is cable seal connector at detecting sensor D2, D3, D4 two ends, are connected with armored cable.
Fig. 7 is when the quantity of constant-current source circuit, the quantity of diode, the quantity of stainless steel contact are 5, the sectional view of the embodiment two of a kind of oil-water interface detection sensor provided by the invention, as shown in Figure 7, stainless steel contact 205 is wafer type, form by inlaying the contact 2051 that is solidificated on described backplate surface and inlaying the round bar portion 2052 be solidificated in described base plate, the round bar portion of stainless steel contact C, cable connectors 206 base are all inlayed and are solidificated in polymer matrix composites base plate 201; Constant-current source circuit 203, diode 204, detect resistor coupled in parallel line 208 and between all devices, be connected wire and cover by the polymer matrix composites similar with base plate institute landfill.On circuit, one end of all constant-current source circuits connects the negative terminal of diode, and the anode of diode connects stainless steel contact.The other end of constant-current source circuit is all connected with detection resistor coupled in parallel line.All there is cable connectors at oil-water interface detection sensor two ends in the present embodiment.Cable connects sealing device and is used for being tightly connected between detecting sensor and single core armored cable.The parallel wire detecting constant-current source circuit H in parallel connection is connected between sealing device with the cable of detecting sensor lower end, series connection access 1 8V votage control switch Kv.When detecting sensor D1, D2, D3, D4 be connected in series carry out oil-water interfaces detect time, protection diode d provides protection for stainless steel contact C.The voltage-controlled Kv switch of 8V is in order to gating detecting sensor.
Detecting sensor of the present invention is by polymer matrix composites base plate and inlay the stainless steel contact being solidificated in its upper surface and form.The two ends up and down of detecting sensor D1, D2, D3, D4 all have cable to connect sealing device, and only top is single-ended has cable to connect sealing device for detecting sensor D1.
Cause the factors such as electric leakage on the impact of measuring oil-water interfaces for reducing and eliminating the below detecting sensor be in bittern because bittern pollutes, in 4 detecting sensors, in 3 detecting sensors above being arranged on, 1 votage control switch is installed respectively separately, the break-make that different voltage controls 3 votage control switches is respectively exported respectively by ground detection instrument, in order to the duty of respectively lower 4 detecting sensors of control well, eliminate the impact that oil-water interfaces are detected that the stube cable of the below detecting sensor be in bittern and cable connectors electric leakage cause.
4 detecting sensor D1, D2, D3, D4, manufacture by resin-based insulation materials, long 1 meter, long semi-cylindrical, is fixedly mounted on this sensor and detects making outside the outer tube of chamber of the degree of depth.Often propping up detecting sensor inside has 5 constant current values to be 5 milliamperes, the constant-current source circuit H of one end parallel connection.All constant-current source circuit H other ends then connect the negative terminal of a protection diode d respectively, and the anode of all protection diode d is then mounted on the bottom of the circular stainless steel contact C being equidistantly 20 centimetres in detecting sensor, each other respectively.Protection diode avoids cell reaction corrosion for the protection of the stainless steel contact C of detecting sensor D1, D2, D3, D4.Stainless steel contact C is disc, diameter 10 millimeters, is embedded in the measuring transducer be made up of resin-based insulation materials on the surface, directly can contacts with measured medium diesel oil or bittern.The upper and lower two ends of sensor D2, D3, D4,3, top of 4 detecting sensors all have cable to connect sealing device, and 1 detecting sensor D1 of bottom is only single-ended has cable to connect sealing device.Cable connects sealing device and is used for being tightly connected between detecting sensor and single core armored cable.
At 3, the top of 4 detecting sensors detecting sensor D2, D3, D4 lower inside, be connected between sealing device at the parallel wire of 5 constant-current source circuit H in parallel with the cable below detecting sensor, series connection access 1 8V votage control switch Kv.Votage control switch Kv disconnects when its both end voltage is less than 8V, conducting when being more than or equal to 8V.
Detecting sensor D thickness is less than 20 millimeters, can smoothly under enter in the annular space of between intervalve and sleeve pipe 20 millimeters.The sealing of resin-based detecting sensor D is withstand voltage is greater than 25MPa.Detecting sensor detects the underground work degree of depth and is greater than 2500 meters.
Fig. 9 is the schematic diagram that a kind of votage control switch provided by the invention controls the specific embodiment of tandem underground oil-water interface detection systems, and in fig .9, described oil-water interface detection sensor group is made up of the oil-water interface detection sensor of 4 series connection.I.e. 5 underground oil-water Interface detection sensors of the present invention's use, by being connected by single core armored cable group, wherein single core armouring is connected in series 5 downhole detection sensors.Ground detector in Fig. 9, uses single core armored cable L, connects 5 detecting sensors respectively.5 detecting sensors are respectively D1, D2, D3, D4.
As shown in Figure 9, the system that this embodiment provides is by ground checkout equipment M, and single core armored cable L, 4 downhole detection sensors D1, D2, D3, D4 form.Ground checkout equipment M is connected by single core armored cable L with the detecting sensor D being positioned at down-hole.Detecting sensor D1, single core armored cable between D2, D3, D4, is used to be connected in series.The upper and lower two ends of sensor D2, D3, D4,4, top of 5 detecting sensors all have cable to connect sealing device, and 1 detecting sensor D1 of bottom is only single-ended has cable to connect sealing device.Cable connects sealing device and is used for being tightly connected between detecting sensor and single core armored cable L.
Also namely the present invention is specifically by ground checkout equipment M, and single core armored cable L, 4 downhole detection sensors D1, D2, D3, D4 form.Ground checkout equipment M and the detecting sensor D being positioned at down-hole, is connected by single core armored cable L.Detecting sensor D1, single core armored cable between D2, D3, D4, is used to be connected in series.
Figure 10 is the concrete structure schematic diagram that a kind of votage control switch provided by the invention controls ground detector in tandem underground oil-water interface detection systems, as shown in Figure 10, described ground detector 1 comprises voltage stabilizing and detects power supply 11, detects the detection ammeter 12 that power supply is connected and the sense switch 13 be connected with described detection ammeter with described voltage stabilizing.
Figure 11 is the circuit theory diagrams that a kind of votage control switch provided by the invention controls the specific embodiment of tandem underground oil-water interface detection systems, as shown in Figure 11, in this specific embodiment, detection power supply Vc1, Vc2, Vc3, Vc4 that described ground detector M is made up of the 8V voltage stabilizing of 4 series connection, detect ammeter A, detection voltage-selected switch K1 and test button K switch 2 form.Detecting voltage-selected switch K1 has 4 to select shelves, can select-8V measuring voltage the Vc1 ,-16V measuring voltage Vc2 ,-24V measuring voltage the Vc3 ,-32V measuring voltage Vc4 that are detected by the 8V voltage stabilizing of 4 series connection in power supply respectively.
The present invention is made up of ground checkout equipment M, single core armored cable L, 4 downhole detection sensors D1, D2, D3, D4.Ground checkout equipment M is connected by single core armored cable L with the detecting sensor D being positioned at down-hole.Detecting sensor D1, single core armored cable between D2, D3, D4, is used to be connected in series.In detecting sensor D2, D3, D4,8V votage control switch Kv is all arranged at bottom, and the connection between bottom detecting sensor and upper detection sensor is all by 8V votage control switch Kv.Detection power supply Vc1, Vc2, Vc3, Vc4 of being made up of the-8V voltage-stabilized power supply of 4 series connection in ground checkout equipment M, detect ammeter A, and detection voltage-selected switch K1 and test button K switch 2 form.Detecting voltage-selected switch K1 has 4 to select shelves, and-8V the voltage stabilizing that 4 can be selected respectively to connect detects-8V measuring voltage Vc1 ,-16V measuring voltage Vc2 ,-24V measuring voltage Vc3 ,-32V measuring voltage Vc4 in power supply.The measuring voltage selected after testing button switch K 2 outputs to single core armored cable L heart yearn.The detection power supply Vc positive pole of ground checkout equipment is connected to armored cable L outer armor (greatly).
4 detecting sensors inside has 5 constant currents to be 5 milliamperes, the constant-current source circuit H of one end parallel connection.All constant-current source circuit H other ends then connect the negative terminal of a protection diode d respectively, and the anode of all protection diode d is then mounted on the bottom of the circular stainless steel contact C being equidistantly 20 centimetres in detecting sensor, each other respectively.4, the top detecting sensor D2 of 5 detecting sensors, D3, D4 lower inside, be connected between sealing device at the parallel wire of 5 constant-current source circuit H with the cable below detecting sensor, series connection access 1 8V votage control switch Kv.Votage control switch Kv disconnects when its both end voltage is less than or equal to 8V, is greater than 8V conducting.
Downhole detection sensor is installed and is gone into the well in process, according to making chamber engineering design requirements, 4 detecting sensor D1, D2, D3, D4 being arranged on respectively from bottom to top and different making chamber height and position.4 detecting sensors are connected in series after installation goes into the well, and 4 detecting sensors are measured medium between stainless steel contact C and barefoot interval.Measured medium type depends on that diesel oil injects the degree of depth, or is the diesel oil of isolator, or is the bittern of conductor.
The 8V voltage stabilizing that ground checkout equipment M has 4 to connect detects power supply, and output voltage is respectively Vc1=-8V, Vc2=-16V, Vc3=-24V, Vc4=-32V.Detecting voltage-selected switch K1 has 4 to select shelves, selects-8V measuring voltage Vc1 ,-16V measuring voltage Vc2 ,-24V measuring voltage Vc3 ,-32V measuring voltage Vc4 in the 8V voltage stabilizing detection power supply of 4 series connection respectively.
The detection power supply Vc positive pole of ground checkout equipment is connected to armored cable L outer armor (greatly),-8V ,-16V ,-24V ,-32V four detects power supply and uses detection voltage-selected switch K1 to select one, single core armored cable heart yearn is switched to through ammeter, button switch K 2, be connected with 4, the down-hole detecting sensor of connecting, form oil-water interfaces measure loop with the earth.
When carrying out oil-water interfaces detection, first use and detect voltage-selected switch K1 selection-8V measuring voltage Vc1, Pen-down detection button switch K 2 connects measure loop.Because measuring voltage Vc1 is not more than-8V, the 8V votage control switch Kv of detecting sensor D2, D3, D4 interior lower end is all in off-state, and-8V measuring voltage Vc1 can only detect detecting sensor D4.5 stainless steel contact C on detecting sensor D4 and between barefoot interval (greatly), measured medium is diesel oil time, to passing through 5 constant-current source circuit H no currents of sensor internal of stainless steel contact C, measure current value Ic=0, measure detecting sensor D4 and be in diesel oil.
When between 5 stainless steel contact C and barefoot interval (greatly) of detecting sensor D4, measured medium is bittern, 5 constant-current source circuit H of 5 sensor internals have electric current to pass through.This measurement current value equals 5 times 25 milliamperes of 5 milliamperes.Measure detecting sensor D4 to be in bittern.
Use and detect voltage-selected switch K1 and select-8V measuring voltage Vc1, as measurement current value Ic=0, measure detecting sensor D4 when being in diesel oil, use and detect voltage-selected switch K1 and select-16V measuring voltage Vc2 to measure.8V votage control switch Kv now in detecting sensor D4 connects, and the 8V votage control switch Kv in D2, D3 is still in off-state, and-16V measuring voltage Vc2 can only oil-water interfaces on detecting sensor D3.Because the 8V votage control switch Kv in detecting sensor D4 has 8V voltage drop, the measuring voltage on detecting sensor D3 is also Vc=Vc2-Vc1=-8V.Detecting sensor D3 measuring process is identical with detecting sensor D4 measuring process.
When detecting sensor D3 measures current value Ic=0, measure detecting sensor D3 when being in diesel oil, use and detect voltage-selected switch K1 and select-24V measuring voltage Vc3 to measure.8V votage control switch Kv now in detecting sensor D3, D4 connects, and the 8V votage control switch Kv in D2 is still in off-state, and-24V measuring voltage Vc3 can only oil-water interfaces on detecting sensor D2.Because the 8V votage control switch Kv in detecting sensor D3, D4 all has 8V voltage drop, the measuring voltage on detecting sensor D2 is also Vc=Vc3-Vc2=-8V.Detecting sensor D2 measuring process and detecting sensor D3, D4 measuring process are identical.
When detecting sensor D2 measures current value Ic=0, measure detecting sensor D2 when being in diesel oil, use and detect voltage-selected switch K1 and select-32V measuring voltage Vc4 to measure.8V votage control switch Kv now in detecting sensor D2, D3, D4 connects, and detects detecting sensor D1.Because the 8V votage control switch Kv in detecting sensor D2, D3, D4 all has 8V voltage drop, the measuring voltage on detecting sensor D1 is also Vc=Vc4-Vc3=-8V.Detecting sensor D1 measuring process and detecting sensor D2, D3, D4 measuring process are identical.Till above-mentioned testing process proceeds to measure oil-water interfaces.
Below in conjunction with Fig. 9, Figure 11, introduce the course of work that votage control switch of the present invention controls tandem underground oil-water interface detection systems.
Go into the well in process making chamber outer tube, 4 detecting sensor D1, D2, D3, D4 are arranged on from bottom to top according to detection design depth requirements and make outside chamber on tube column accordingly.Single core armored cable L heart yearn is connected with detecting sensor D4.Single core armored cable is used to be connected between D1, D2, D3, D4.
In the process that detecting sensor is gone into the well, on use cable fixing clamp/clip to be fixed on by single core armored cable L column that every root goes into the well.Due to single core armored cable L outer armor with make chamber outer tube and be connected, make chamber outer tube and the earth and be connected and make greatly to become a part for interface detector measure loop passage.
Detecting sensor D1, D2, D, D4 and single core armored cable L go into the well after installation, are connected by single core armored cable L on ground with the ground checkout equipment M of detector for oil-water interface.After salt hole air reserved storeroom makes chamber commencement of works, make chamber outer tube and between sleeve pipe and the bore hole borehole wall, the sixth of the twelve Earthly Branches injects diesel oil.When needs detect oil-water interfaces, first use and detect voltage-selected switch K1 selection-8V measuring voltage Vc1, oil-water interfaces detection is carried out to detecting sensor D4.When D4 is in diesel oil, detect electric current I c=0.Use and detect voltage-selected switch K1 selection-16V measuring voltage Vc2, connect-12V votage control switch the Kv in detecting sensor D4, oil-water interfaces detection is carried out to detecting sensor D3.When D3 is in diesel oil, detect electric current I c=0.Use and detect voltage-selected switch K1 selection-24V measuring voltage Vc3, connect two 8V votage control switch Kv in detecting sensor D4, D3, oil-water interfaces detection is carried out to detecting sensor D2.When D2 is in diesel oil, detect electric current I c=0.Use and detect voltage-selected switch K1 selection-32V measuring voltage Vc4, connect 3 8V votage control switch Kv in detecting sensor D4, D3, D2, oil-water interfaces detection is carried out to detecting sensor D1.Above-mentioned testing process proceeds to detect electric current I c and is greater than zero, is less than within the scope of 25 milliamperes, can determines that oil-water interfaces are in this detecting sensor.By Ic divided by 5mA gained integer, can determine that upper 5 of this detecting sensor D has in the C of stainless steel contact to have and severally has stainless steel contact C in bittern.Every detecting sensor D and 5 stainless steel contact C all has the depth location determined in process is gone into the well in installation.Measure the detecting sensor D at oil-water interfaces place and be in the number of the stainless steel contact C in bittern, the position of oil-water interfaces can be determined.
Also namely, the present invention is by ground checkout equipment M, and single core armored cable L, 4 downhole detection sensors D1, D2, D3, D4 form.Ground checkout equipment M and the detecting sensor D being positioned at down-hole, is connected by single core armored cable L.Detecting sensor D1, single core armored cable between D2, D3, D4, is used to be connected in series.
Detection power supply Vc1, Vc2, Vc3, Vc4 that ground checkout equipment M is made up of the 8V voltage stabilizing of 4 series connection, detect ammeter A, detection voltage-selected switch K1 and test button K switch 2 form.Detecting voltage-selected switch K1 has 4 to select shelves, can select-8V measuring voltage the Vc1 ,-16V measuring voltage Vc2 ,-24V measuring voltage the Vc3 ,-32V measuring voltage Vc4 that are detected by the 8V voltage stabilizing of 4 series connection in power supply respectively.
4 detecting sensor D1, D2, D3, D4, manufacture by resin-based insulation materials, long 1 meter, long semi-cylindrical, is fixedly mounted on this sensor and detects making outside the outer tube of chamber of the degree of depth.Often propping up detecting sensor inside has 5 constant current values to be 5 milliamperes, the constant-current source circuit H of one end parallel connection.All constant-current source circuit H other ends then connect the negative terminal of a protection diode d respectively, and the anode of all protection diode d is then mounted on the bottom of the circular stainless steel contact C being equidistantly 20 centimetres in detecting sensor, each other respectively.Protection diode avoids cell reaction corrosion for the protection of the stainless steel contact C of detecting sensor D1, D2, D3, D4.Stainless steel contact C is disc, diameter 10 millimeters, is embedded in the measuring transducer be made up of resin-based insulation materials on the surface, directly can contacts with measured medium diesel oil or bittern.The upper and lower two ends of sensor D2, D3, D4,3, top of 4 detecting sensors all have cable to connect sealing device, and 1 detecting sensor D1 of bottom is only single-ended has cable to connect sealing device.Cable connects sealing device and is used for being tightly connected between detecting sensor and single core armored cable.At 3, the top of 4 detecting sensors detecting sensor D2, D3, D4 lower inside, be connected between sealing device at the parallel wire of 5 constant-current source circuit H in parallel with the cable below detecting sensor, series connection access 1 8V votage control switch Kv.Votage control switch Kv disconnects when its both end voltage is less than 8V, conducting when being more than or equal to 8V.
Detecting sensor D thickness is less than 20 millimeters, can smoothly under enter in the annular space of between intervalve and sleeve pipe 20 millimeters.The sealing of resin-based detecting sensor D is withstand voltage is greater than 25MPa.Detecting sensor detects the underground work degree of depth and is greater than 2500 meters.
Downhole detection sensor is installed and is gone into the well in process, according to making chamber engineering design requirements, 4 detecting sensor D1, D2, D3, D4 being arranged on respectively from bottom to top and different making chamber height and position.4 detecting sensors are connected in series after installation goes into the well, and 4 detecting sensors are measured medium between stainless steel contact C and barefoot interval.Measured medium type depends on that diesel oil injects the degree of depth, or is the diesel oil of isolator, or is the bittern of conductor.
The invention is characterized in that detection system is made up of above-mentioned ground checkout equipment M, single core armored cable L, 4 downhole detection sensors D1, D2, D3, D4.Ground checkout equipment M is connected by single core armored cable L with the detecting sensor D being positioned at down-hole.Detecting sensor D1, single core armored cable between D2, D3, D4, is used to be connected in series.
4 detecting sensor D1 of the present invention, D2, D3, D4, manufacture by resin-based insulation materials, long 1 meter, long semi-cylindrical, is fixedly mounted on this sensor and detects making outside the outer tube of chamber of the degree of depth.Often propping up detecting sensor inside has 5 constant current values to be 5 milliamperes, the constant-current source circuit H of one end parallel connection.All constant-current source circuit H other ends then connect the negative terminal of a protection diode d respectively, and the anode of all protection diode d is then mounted on the bottom of the circular stainless steel contact C being equidistantly 20 centimetres in detecting sensor, each other respectively.Protection diode avoids cell reaction corrosion for the protection of the stainless steel contact C of detecting sensor D1, D2, D3, D4.Stainless steel contact C is disc, diameter 10 millimeters, is embedded in the measuring transducer be made up of resin-based insulation materials on the surface, directly can contacts, carry out oil-water interfaces measurement with measured medium diesel oil or bittern.
In the present invention 4 detecting sensor D1, D2, D3, D4, the upper and lower two ends of sensor D2, D3, D4,3, top all have cable to connect sealing device, and 1 detecting sensor D1 of bottom only has cable to connect sealing device in upper end.Cable connects sealing device and is used for being tightly connected between 4 detecting sensors and single core armored cable L
The present invention, at 3, the top of 4 detecting sensors detecting sensor D2, D3, D4 lower inside, is connected between sealing device at the parallel wire of 5 constant-current source circuit H in parallel with the cable below detecting sensor, series connection access 1 8V votage control switch Kv.Votage control switch Kv disconnects when its both end voltage is less than 8V, conducting when being more than or equal to 8V.Under the output voltage control of ground checkout equipment M, for 1 in gating detecting sensor D1, D2, D3, D4 from top to bottom under the output voltage control of ground checkout equipment M, every detecting sensor is measured separately, until detect the depth location of oil-water interfaces.This metering system effectively can get rid of the impact of stube cable electric leakage between cable connectors in the detecting sensor below tested detecting sensor and sensor, meets more than 6 years salt hole air reserved storerooms and makes in the process of chamber the requirement that oil-water interfaces whole process detects.
Detecting sensor D thickness is less than 20 millimeters, can smoothly under enter in the annular space of between intervalve and sleeve pipe 20 millimeters.The sealing of resin-based detecting sensor D is withstand voltage is greater than 25MPa.Detecting sensor detects the underground work degree of depth and is greater than 2500 meters.
Vc1, Vc2, Vc3, Vc4 that ground checkout equipment M is made up of the-8V voltage-stabilized power supply of 4 series connection measure power supply, detect ammeter A, and detection voltage-selected switch K1 and test button K switch 2 form.Detecting voltage-selected switch K1 has 4 to select shelves, and-8V measuring voltage Vc1 ,-16V measuring voltage Vc2 ,-24V measuring voltage Vc3 ,-32V measuring voltage Vc4 can be selected respectively to measure 4, down-hole detecting sensor gating.The detection power supply Vc positive pole of ground checkout equipment is connected to armored cable L outer armor (greatly), Vc1, Vc2, Vc3, Vc4 measure power supply and use and detect voltage-selected switch K1 and select it after 1, be switched to single core armored cable L heart yearn through ammeter, button switch K 2, detect the oil-water interfaces height on 4, the down-hole detecting sensor D of single core armored cable connection.
In sum, the invention provides a kind of votage control switch and control tandem underground oil-water interface detection systems, by arranging testing circuit and stainless steel contact on base plate, achieve and normally can complete testing for a long time in the hot environment of 90 DEG C and the hyperbaric environment of 25Mpa, the construction adapting to China's salt hole air reserved storeroom has started to develop to deep-well, to the oil-water interface detection sensor of the more high performance requirements use that the checkout equipment of oil-water interfaces proposes, the votage control switch that is made up of multiple oil-water interface detection sensor and ground detector controls tandem underground oil-water interface detection systems can oil-water interfaces under measuring well, realize the continuous measurement at underground oil-water interface, improve underground oil-water Interface detection depth bounds and certainty of measurement, reduce to make on the outer tube of chamber and carry number of times, reduce and make chamber cost, meet reacting cycle make chamber new make the measurement requirement of chamber engineering to underground oil-water interface.When the present invention uses 5 detecting sensors to carry out oil-water interfaces detection, 5 detecting sensors are arranged on each predetermined detection depth location respectively, then are connected in series by a single core armored cable detecting sensor.
Beneficial effect of the present invention is:
The present invention is that a kind of votage control switch controls tandem underground oil-water interface detector, adopts constant-current source circuit as testing circuit device main in downhole detection sensor.Owing to adopting oil-water interfaces under 4 detecting sensors series connection measuring wells, expand underground oil-water Interface detection depth bounds, reduce to make on the outer tube of chamber and carry number of times, reduce and make chamber cost, meet the needs that in the rock salt gas storage solution mining construction process of underground, oil-water interfaces detect.
Detecting sensor D of the present invention uses constant-current source circuit H as main circuit device, there are 3 effects: in (1) sensor D, constant-current source circuit H adopts work product device to improve serviceability temperature, reduce the impact of down-hole high temperature on sensor internal circuit, improve the underground work life-span of sensor D.(2) circuit devcie quantity is reduced to corresponding each stainless steel contact C only has a constant-current source circuit H and to protect diode d, and sensor internal circuit devcie quantity is few, reduces the fault rate of sensor D.(3) sensor internal circuit devcie quantity is few, is conducive to improving the sealing reliability in sensor processing and manufacturing process.
The most withstand voltage 25MPa of high sealability of detecting sensor D of the present invention, maximum operating temperature 90 DEG C, maximum oil water termination detects the degree of depth 2500 meters, can meet China's gas storage cavern and make oil-water interfaces in the engineering of chamber and detect the requirement of above-mentioned 3 parameters.
Ground detection instrument M of the present invention adopts 4-8V voltage stabilizings to detect power sources in series, form 4 and detect power supply Vc1, Vc2, Vc3 and Vc4,4 are detected power supply Vc1, Vc2, Vc3 and Vc4 negative terminal and are selected by detection voltage-selected switch K1 in testing process respectively, export one of them to measuring cable L heart yearn.The positive termination the earth of 4 series-connection power supplies, in conjunction with the polarity protection diode d in detecting sensor D1, D2, D3, D4, can not corroded by cell reaction by the stainless steel contact C on available protecting detecting sensor D.
Key effect of the present invention is, due to the 8V votage control switch Kv using detecting sensor D2, D3, D4 built-in, under using-8V the voltage stabilizing of 4 series connection in ground detection instrument M to detect the cooperation of power supply Vc1, Vc2, Vc3, Vc4, achieve the oil-water interfaces independently detected in 1 detecting sensor from top to bottom, eliminate the impact that between the cable connectors of the bottom detecting sensor be in bittern and detecting sensor, stube cable electric leakage detects oil-water interfaces, achieve the normal detection that salt hole air reserved storeroom makes chamber overall process oil-water interfaces for 5 to 6 years.
In oil-water interfaces testing process, by measurement current value Ic can be calculated the quantity 1 tested detecting sensor D of oil-water interfaces place being in stainless steel contact C in bittern divided by 5mA.Because detecting sensor D fitting depth position is determined, on sensor, the fitting depth position of each stainless steel contact C is also determined.Calculate the quantity n of stainless steel contact C in bittern, also just determine the position of oil-water interfaces, error is less than 20 centimetres.N is 0,1,2,3,4,5.
Votage control switch of the present invention controls tandem detector for oil-water interface and first to utilize in system the highest of electronic device in downhole sensor to allow operating voltage, adopt oil-water interfaces under 4 downhole detection sensor series measuring wells, expand the detection range at underground oil-water interface.
Key technology of the present invention is to utilize stube cable between downhole sensor cable connectors and downhole sensor to be in bittern slight electric leakage and the feature that can disappear of slightly leaking electricity in the diesel oil being in isolator, each installation 1 voltage cut-out in the sensor of 3, top in 4 detecting sensor detection systems, be called for short votage control switch, detector for oil-water interface can be realized to the gating measurement from top to bottom of 4, down-hole detecting sensor, effectively prevent the impact that stube cable between downhole detection sensor and detecting sensor detect oil-water interfaces with the connector tracking of cable, what realize salt hole air reserved storeroom makes the normal detection that chamber engineering makes the underground oil-water interface of chamber overall process for 5 to 6 years.
Those skilled in the art can also recognize that the various functions that the embodiment of the present invention is listed are the designing requirements realizing depending on specific application and whole system by hardware or software.Those skilled in the art for often kind of specifically application, can use the function described in the realization of various method, but this realization can should not be understood to the scope exceeding embodiment of the present invention protection.
Apply specific embodiment in the present invention to set forth principle of the present invention and embodiment, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (13)
1. votage control switch controls a tandem underground oil-water interface detection systems, it is characterized in that, described votage control switch controls tandem underground oil-water interface detection systems and comprises:
One ground detector;
One oil-water interface detection sensor group, is connected with described ground detector by armored cable;
Described oil-water interface detection sensor group is made up of 4 oil-water interface detection sensors.
2. votage control switch according to claim 1 controls tandem underground oil-water interface detection systems, and it is characterized in that, 4 described oil-water interface detection sensors are connected mutually.
3. votage control switch according to claim 1 and 2 controls tandem underground oil-water interface detection systems, and it is characterized in that, described oil-water interface detection sensor comprises:
Base plate;
Be arranged on the testing circuit on described base plate, described testing circuit comprises multiple constant-current source circuit and multiple diode, and each described constant-current source circuit one end is in parallel, the other end is connected with the negative terminal of diode described in;
Be embedded in the multiple stainless steel contacts on described base plate, each described stainless steel contact is connected with the anode of diode described in.
4. votage control switch according to claim 3 controls tandem underground oil-water interface detection systems, and it is characterized in that, the quantity of described constant-current source circuit is identical with the quantity of the quantity of described diode, described stainless steel contact.
5. votage control switch according to claim 4 controls tandem underground oil-water interface detection systems, and it is characterized in that, the quantity of described constant-current source circuit is 5.
6. votage control switch according to claim 5 controls tandem underground oil-water interface detection systems, and it is characterized in that, described oil-water interface detection sensor also comprises the cable seal connector being arranged on upper end.
7. votage control switch according to claim 5 controls tandem underground oil-water interface detection systems, it is characterized in that, described oil-water interface detection sensor also comprises the cable seal connector being arranged on upper end, the cable seal connector being arranged on bottom.
8. votage control switch according to claim 7 controls tandem underground oil-water interface detection systems, it is characterized in that, described oil-water interface detection sensor also comprises the votage control switch between parallel wire and the cable seal connector of described bottom being arranged on described constant-current source circuit.
9. votage control switch according to claim 3 controls tandem underground oil-water interface detection systems, and it is characterized in that, described base plate is made up of resin-based insulation materials.
10. votage control switch according to claim 3 controls tandem underground oil-water interface detection systems, it is characterized in that, described stainless steel contact is wafer type, forms by inlaying the contact that is solidificated on described backplate surface and inlaying the round bar portion be solidificated in described base plate.
11. votage control switches according to claim 8 control tandem underground oil-water interface detection systems, it is characterized in that, the thickness of described oil-water interface detection sensor is less than 20 millimeters, most high sealability is withstand voltage is 25Mpa, it is 2500 meters that maximum oil water termination detects the degree of depth, and maximum operating temperature is 90 DEG C.
12. votage control switches according to claim 3 control tandem underground oil-water interface detection systems, and it is characterized in that, described armored cable is single core armored cable.
13. votage control switches according to claim 1 or 8 control tandem underground oil-water interface detection systems, it is characterized in that, described ground detector comprises voltage stabilizing and detects power supply, detects the detection ammeter that power supply is connected and the sense switch be connected with described detection ammeter with described voltage stabilizing.
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Application publication date: 20150408 |