CN204373734U - Votage control switch controls series and parallel compensated resistance device formula underground oil-water interface detection systems - Google Patents
Votage control switch controls series and parallel compensated resistance device formula underground oil-water interface detection systems Download PDFInfo
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- CN204373734U CN204373734U CN201420858268.4U CN201420858268U CN204373734U CN 204373734 U CN204373734 U CN 204373734U CN 201420858268 U CN201420858268 U CN 201420858268U CN 204373734 U CN204373734 U CN 204373734U
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Abstract
The utility model provides a kind of votage control switch to control series and parallel compensated resistance device formula underground oil-water interface detection systems, and described votage control switch controls series and parallel compensated resistance device formula underground oil-water interface detection systems and comprises: a ground detector; One oil-water interface detection sensor group, is connected with described ground detector by combination sheathed cable; Described oil-water interface detection sensor group is made up of 20 oil-water interface detection sensors.The votage control switch that is made up of 20 oil-water interface detection sensors and ground detector controls series and parallel compensated resistance device formula underground oil-water interface detection systems can water-oil interface under measuring well, realize the continuous coverage at underground oil-water interface.
Description
Technical field
The utility model makes chamber field of engineering technology about salt hole air reserved storeroom; particularly about the detection technique at the protective seam interface for controlling underground salt cave cavity geometry, be that a kind of votage control switch controls series and parallel compensated resistance device formula underground oil-water interface detection systems votage control switch control series and parallel compensated resistance device formula 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 range 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.Therefore, 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 water-oil interface, 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, and according to the depth location of testing result by water-oil interface under oiling or continuous adjust well of draining the oil, ensure that making chamber process is undertaken by planned design.
The water-oil interface detection scheme of current employing is water-oil interface sensor to be arranged on to be made on the outer tube outer wall of chamber, with making chamber outer tube RIH.Water-oil interface 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.
The salt hole air reserved storeroom of China's deep-well, ultra deep well makes chamber, and general salt deposit is thicker, and down-hole cavity increases, and the water-oil interface of needs detect the corresponding increase of depth range, and scope can reach hundred meters.The downhole detection number of sensors that existing detector for oil-water interface uses still is not enough to meet China's deep-well, ultra deep well salt hole air reserved storeroom is made in the process of chamber the requirement that the whole process of water-oil interface detects.At present for realizing deep-well, ultra deep well salt hole air reserved storeroom is made in the process of chamber and is detected the whole process of water-oil interface, can only after underground oil-water interface upwards exceeds the sensing range of topmost downhole detection sensor of installation, by arranging drilling team's construction, use rig making on the outer tube of chamber of detecting sensor of installation to be carried, make to be arranged on the underground oil-water Interface detection sensor made on the outer tube outer wall of chamber and enter top water-oil interface depth range to be measured.For meeting the needs of underground oil-water Interface detection, make in the overall process of chamber at gas storage, use rig carries make chamber outer tube tubing string often, engineering is large, the time is long, costly, reduce the construction speed of down-hole salt hole air reserved storeroom, adds the construction cost of down-hole salt hole air reserved storeroom.
The salt hole air reserved storeroom well depth of China's deep-well, ultra deep well is at 2000 meters to 3000 meters, and downhole temperature can reach 100 DEG C, and down-hole pressure can reach 30MPa.For realizing deep-well, the water-oil interface of ultra deep well measure, and propose requirements at the higher level to the temperature performance of detector for oil-water interface and withstand voltage properties.
All there is a common problem in the tandem type of current use, parallel connection type underground oil-water Interface detection device, the i.e. stand-by detecting sensor in the below of long period of soaking in bittern, these detecting sensors and stube cable between the coupling arrangement of cable and sensor, after normal work about 1 year, there is slight electric leakage in various degree, detecting sensor top normally being detected to water-oil interface impacts, and causes the water-oil interface measuring ability of underground oil-water Interface detection device temporarily to decline and even temporarily loses measuring ability.Down-hole salt hole air reserved storeroom is made the chamber cycle and is generally 5 to 6 years, during this period, does not allow that carry out Important Project operation proposes make chamber outer tube maintenance, maintenance or change downhole detection sensor in well.Therefore, make non-fault in the cycle of chamber at the down-hole salt hole air reserved storeroom of 5 to 6 years normally measure for realizing downhole detection sensor, effectively feasible technical scheme must be provided to be solved.
Utility model content
In order to the detector for oil-water interface solving water-oil interface detection scheme in prior art cannot meet the difficult problem that underground oil-water Interface detection depth range requires, the utility model provides a kind of votage control switch and controls series and parallel compensated resistance device formula 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 100 DEG C and the hyperbaric environment of 30Mpa, 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 water-oil interface proposes, the votage control switch that is made up of 20 oil-water interface detection sensors and ground detector controls series and parallel compensated resistance device formula underground oil-water interface detection systems can water-oil interface under measuring well, realize the continuous coverage at underground oil-water interface.
The purpose of this utility model is, provides a kind of votage control switch and controls series and parallel compensated resistance device formula underground oil-water interface detection systems, comprising: a ground detector; One oil-water interface detection sensor group, is connected with described ground detector by combination sheathed cable; Described oil-water interface detection sensor group is made up of 20 oil-water interface detection sensors.
Preferably, described oil-water interface detection sensor group is made up of 4 groups of oil-water interface detection sensor groups of parallel connection, and each oil-water interface detection sensor group is made up of the oil-water interface detection sensor of 5 series connection.
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 resistor and multiple diode, and each described resistor 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 on described base plate, each described stainless steel contact is connected with the anode of diode described in.
Preferably, the quantity of described resistor is identical with the quantity of the quantity of described diode, described stainless steel contact.
Preferably, the quantity of described resistor is 5.
Preferably, described oil-water interface detection sensor also comprises the cable seal web member being arranged on upper end.
Preferably, described oil-water interface detection sensor also comprises the cable seal web member being arranged on upper end, the cable seal web member being arranged on bottom.
Preferably, described oil-water interface detection sensor also comprises the votage control switch between parallel wire and the cable seal web member of described bottom being arranged on described resistor.
Preferably, the thickness of described oil-water interface detection sensor is less than 20 millimeters, and most high sealing is withstand voltage is 30Mpa, and it is 3000 meters that maximum oil water termination detects the degree of depth, and maximum operating temperature is 100 DEG C.
Preferably, described base plate is made up of resin-based insulating material.
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, described combination sheathed cable forms by 4 single core sheathed cables are stranded.
Preferably, described ground detector comprises voltage stabilizing and detects power supply, detects the detection reometer that power supply is connected and the detector switch be connected with described detection reometer with described voltage stabilizing.
The beneficial effects of the utility model are, provide a kind of votage control switch and control series and parallel compensated resistance device formula 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 100 DEG C and the hyperbaric environment of 30Mpa, 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 water-oil interface proposes, the votage control switch that is made up of 20 oil-water interface detection sensors and ground detector controls series and parallel compensated resistance device formula underground oil-water interface detection systems can water-oil interface under measuring well, realize the continuous coverage at underground oil-water interface, improve underground oil-water Interface detection depth range and measuring accuracy, 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 utility model, 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 utility model embodiment 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 embodiments more of the present utility model, 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 series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 1 provides for the utility model embodiment;
The structured flowchart of the embodiment two of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 2 provides for the utility model embodiment;
The outside drawing of the embodiment two of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 3 provides for the utility model;
The cut-open view of the embodiment two of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 4 provides for the utility model;
The structured flowchart of the embodiment three of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 5 provides for the utility model embodiment;
The outside drawing of the embodiment three of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 6 provides for the utility model;
The cut-open view of the embodiment three of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 7 provides for the utility model;
The structured flowchart of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 8 provides for the utility model embodiment;
The schematic diagram of the specific embodiment of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 9 provides for the utility model;
Figure 10 controls the concrete structure schematic diagram of ground detector in series and parallel compensated resistance device formula underground oil-water interface detection systems for a kind of votage control switch that the utility model provides;
The circuit theory diagrams of the specific embodiment of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Figure 11 provides for the utility model;
Figure 12 is the detection schematic diagram that salt hole air reserved storeroom makes chamber process water-oil interface.
Embodiment
Below in conjunction with the accompanying drawing in the utility model embodiment, be clearly and completely described the technical scheme in the utility model embodiment, obviously, described embodiment is only the utility model part embodiment, instead of whole embodiments.Based on the embodiment in the utility model, those of ordinary skill in the art are not making the every other embodiment obtained under creative work prerequisite, all belong to the scope of the utility model protection.
The utility model belongs to gas storage cavern and makes chamber field of engineering technology, particularly a kind of protective seam Interface detection equipment for controlling salt cave cavity geometry.
Figure 12 is that salt hole air reserved storeroom makes chamber process water-oil interface 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 water-oil interface, and 9 is row's bittern, and 10 is detecting sensor, and 11 is open hole section, and 12 is single core sheathed 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 predetermined 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 reservation shape in the design of chamber thus in salt deposit.In order to diesel oil is injected into predetermined depth position, must makes on the outer tube outer wall of chamber in predetermined depth position and oil-water interface detection sensor is installed, detect injection diesel oil and whether arrive predetermined depth, to adjust in time, ensure that safety makes chamber.
Water-oil interface detection system of the prior art is made up of ground detector 1 and downhole detection sensor 10, is connected by single core sheathed cable.It makes on the outer tube outer wall of chamber, with making chamber outer tube RIH 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 water-oil interface 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 range.
The purpose of this utility model is:
First object is by using 20 underground oil-water Interface detection sensors, China's deep-well can be covered, depth range that the salt hole air reserved storeroom of ultra deep well makes the housing depth in chamber, meet China's deep-well, ultra deep well salt hole air reserved storeroom make chamber and to fathom the requirement in space, realize deep-well, the omnidistance continuous coverage that chamber process water-oil interface made by ultra deep well.
20 underground oil-water Interface detection sensors of the utility model use, are connected by the combination sheathed cable be made up of 4 single core sheathed cables, and wherein every root list core armouring is connected in series 5 downhole detection sensors, form 5 strings 4 detection mode also.On the installing space of detecting sensor, 5 meters of detecting sensor spacing of allowing are detected with water-oil interface, from casing shoe upwards, equidistantly install with 5 meters, it is 100 meters that 20 detecting sensors detect depth range, cover the depth range that China's salt hole air reserved storeroom makes chamber housing depth, meet salt hole air reserved storeroom and make the requirement that length space is measured in chamber.Owing to no longer needing to install tubing string to adapt to detect the requirement of water-oil interface by repeatedly engineer operation being put forward detecting sensor, accelerating the construction speed of down-hole salt hole air reserved storeroom, reducing the construction cost of down-hole salt hole air reserved storeroom.
Second object is for the salt hole air reserved storeroom of adaptation China deep-well, ultra deep well makes long term high temperature, the high pressure working environment that in the process of chamber, oil-water interface detection sensor faces, the electron device that main detecting element in detecting sensor no longer adopts performance to be subject to temperatures involved larger, and adopt hot operation characteristic good electronic parts design testing circuit, meet the performance requirement of detecting sensor at long-term 100 DEG C of high temperature, high pressure 30MPa working environment.
3rd object is by having installed 1 votage control switch in 4 detecting sensors often organizing above in 5 Series detectors sensors, make in water-oil interface testing process, the detection voltage from low to high sent by ground detection instrument controls the break-make of 4 votage control switches from top to bottom respectively, the sensor that can realize being in oil-water interface position is independently measured, eliminate and be in below detecting sensor in bittern due to detecting sensor cable connectors and stube cable and leak electricity impact top normally being detected to the detecting sensor of water-oil interface caused, all the time normal operating conditions can be in by effective guarantee detector for oil-water interface making in space cycle length, chamber of down-hole salt hole air reserved storeroom 5 to 6 years, adapt to making in space cycle length, chamber of down-hole salt hole air reserved storeroom 5 to 6 years and do not allowed that the chamber outer tube of making by installing detecting sensor proposes to carry out the maintenance of downhole detection sensor, maintenance and the real engine request changed.
The structured flowchart of the embodiment one of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 1 provides for the utility model embodiment, 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 resistor 203 and multiple diode 204, and each described resistor 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 resistor described in the oil-water interface detection sensor that the utility model provides 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 resistor, the quantity of diode, stainless steel contact is identical, is 5.Described base plate is made up of resin-based insulating material.
The structured flowchart of the embodiment two of the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 2 provides for the utility model embodiment, 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 resistor 203 and multiple diode 204, and each described resistor 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 web member 206 of upper end, for detecting being tightly connected between oil-water interface detection sensor and single core sheathed cable.
Fig. 3 is when the quantity of resistor, the quantity of diode, the quantity of stainless steel contact are 5, the outside drawing of the embodiment two of a kind of oil-water interface detection sensor that the utility model provides, as shown in Figure 3, the base plate 201 that the oil-water interface detection sensor that the utility model provides is made up of polymer matrix composites 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 web member 206 to be connected with sheathed cable.Long 1 meter of oil-water interface detection sensor, wide 4 centimetres, thick 16 millimeters.Stainless steel contact diameter is 10 millimeters.Spacing 200 millimeters between two stainless steel contacts.Every detecting sensor has 5 stainless steel contacts.
Fig. 4 is when the quantity of resistor, the quantity of diode, the quantity of stainless steel contact are 5, the cut-open view of the embodiment two of a kind of oil-water interface detection sensor that the utility model provides, 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; The resistor 203 of testing circuit, diode 204, detect resistor coupled in parallel line 207 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 resistors connects the negative terminal of diode, and the anode of diode connects stainless steel contact.The other end of resistor 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 the oil-water interface detection sensor of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 5 provides for the utility model embodiment, 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 resistor 203 and multiple diode 204, and each described resistor 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 web member 206 of upper end, be arranged on a cable seal web member 206 of bottom, for detecting being tightly connected between oil-water interface detection sensor and single core sheathed cable.
Be arranged on the votage control switch 207 between the parallel wire of described resistor and the cable seal web member of described bottom.
Fig. 6 is when the quantity of resistor, the quantity of diode, the quantity of stainless steel contact are 5, the outside drawing of the embodiment two of a kind of oil-water interface detection sensor that the utility model provides, as shown in Figure 6, the oil-water interface detection sensor that provides of the utility model 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.Long 1 meter of detecting sensor, wide 4 centimetres, thick 16 millimeters.Stainless steel contact diameter 10 millimeters.Spacing 200 millimeters between two stainless steel contacts.Every detecting sensor has 5 stainless steel contacts.
Fig. 7 is when the quantity of resistor, the quantity of diode, the quantity of stainless steel contact are 5, the cut-open view of the embodiment two of a kind of oil-water interface detection sensor that the utility model provides, 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; Resistor 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 resistors connects the negative terminal of diode, and the anode of diode connects stainless steel contact.The other end of resistor 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.The parallel wire detecting resistor in parallel connection is connected between packoff with the cable of detecting sensor lower end, series connection access 1 12V votage control switch Kv.When detecting sensor carry out water-oil interface detect time, protection diode d provides protection for stainless steel contact C.The voltage-controlled Kv switch of 12V is in order to gating detecting sensor.
Detecting sensor of the present utility model is by polymer matrix composites base plate and inlay the stainless steel contact being solidificated in its upper surface and form.All there is cable seal web member at detecting sensor D12, D13, D14, D15, D22, D23, D24, D25, D32, D33, D34, D35, D42, D43, D44, D45 two ends, are connected with sheathed cable.Detecting sensor D41, D42, D43, D44, D45 only have single-endedly has cable seal web member to be connected with sheathed cable.Long 1 meter of detecting sensor D, wide 40 millimeters, thick 16 millimeters.Stainless steel contact C diameter 10 millimeters.Spacing 200 millimeters between two stainless steel contact C.Every detecting sensor has 5 stainless steel contact C.
The round bar portion of stainless steel contact C, cable connectors base are all inlayed and are solidificated in the utility model polymer matrix composites base plate; Detect resistor R, protection diode d, 12V votage control switch, detect resistor coupled in parallel line and be connected wire between all devices by the landfill covering of the polymer matrix composites similar with base plate institute.The protection diode d of its correspondence of termination of all detection resistor R on circuit, another termination stainless steel contact of protection diode d.Detect the resistor R other end to be all connected with detection resistor coupled in parallel line.In 20 detecting sensors, the upper and lower two ends of D12, D13, D14, D15, D22, D23, D24, D25, D32, D33, D34, D35, D42, D43, D44, D45 all have cable to connect packoff, and detecting sensor D11, D21, D31, D41, only top are single-ended has cable to connect packoff.Cable connects packoff and is used for being tightly connected between detecting sensor and single core sheathed cable.At detecting sensor D12, D13, D14, D15, D22, D23, D24, D25, D32, D33, D34, D35, D42, D43, D44, D45 lower inside, be connected between packoff at 20 parallel wires detecting resistor R in parallel with the cable below detecting sensor, series connection access 1 12V votage control switch Kv.When detecting sensor carry out water-oil interface detect time, protection diode d provides protection for stainless steel contact C.The voltage-controlled Kv switch of 12V is in order to gating detecting sensor.
A kind of oil-water interface detection sensor that the utility model provides, 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 100 DEG C and the hyperbaric environment of 30Mpa, the construction adapting to China's salt hole air reserved storeroom has started, to deep-well development, to use the more high performance requirements that the checkout equipment of water-oil interface proposes.The thickness of described oil-water interface detection sensor is less than 20 millimeters, seals withstand voltagely to be greater than 30Mpa, and the underground work degree of depth is not less than 3000 meters, and working temperature is not more than 100 DEG C.China's gas storage cavern can be met make water-oil interface in the engineering of chamber and detect the requirement of 3 parameters.
The structured flowchart of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 8 provides for the utility model embodiment, as shown in Figure 8, described votage control switch controls series and parallel compensated resistance device formula 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 combination sheathed cable;
Described oil-water interface detection sensor group 2 is made up of the oil-water interface detection sensor 200 described in 20.
In a particular embodiment, described oil-water interface detection sensor group 2 is made up of 4 groups of oil-water interface detection sensor groups of parallel connection, and each oil-water interface detection sensor group is made up of the oil-water interface detection sensor of 5 series connection.
The schematic diagram of the specific embodiment of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Fig. 9 provides for the utility model, in fig .9, described oil-water interface detection sensor group is made up of 4 groups of oil-water interface detection sensor groups of parallel connection, and each oil-water interface detection sensor group is made up of the oil-water interface detection sensor of 5 series connection.I.e. 20 underground oil-water Interface detection sensors of the utility model use, are connected by the combination sheathed cable be made up of 4 single core sheathed cables, and wherein every root list core armouring is connected in series 5 downhole detection sensors.Ground detector in Fig. 9, uses 4 single core sheathed cable L1, L2, L3, L4 stranded composition combination sheathed cable L, connects 1 group of 5 detecting sensor respectively, add up to 4 groups of 20 detecting sensors.4 groups of 20 detecting sensors are respectively D11, D12, D13, D14, D15, D21, D22, D23, D24, D25, D31, D32, D33, D34, D35, D41, D42, D43, D44, D45.
As shown in Figure 9, the system that this embodiment provides combines sheathed cable by ground detector 1,4 core, 20 oil-water interface detection sensors form.4 cores combination sheathed cables form by 4 single core sheathed cable L1, L2, L3, L4 are stranded.Ground detector is connected by 4 core sheathed cable L with the oil-water interface detection sensor being positioned at down-hole.20 detecting sensors are divided into 4 groups, often organize 5.4 single core sheathed cable L1, L2, L3, L4 of 4 core combination sheathed cable L are connected respectively to 1 group of sensor from bottom to top.Often organizing between 5 sensors uses single core sheathed cable to be connected in series.Single core sheathed cable connects L1 and connects D11, D12, D13, D14, D15, single core sheathed cable connects L2 and connects D21, D22, D23, D24, D25, single core sheathed cable connects L3 and connects D31, D32, D33, D34, D35, and single core sheathed cable connects L4 and connects D41, D42, D43, D44, D45.Often organizing between 5 detecting sensors uses single core sheathed cable to be connected in series.
20 oil-water interface detection sensor length in this embodiment are 1 meter, are manufactured, long semi-cylindrical by resin-based insulating material, are fixedly mounted on this sensor and detect making outside the outer tube of chamber of the degree of depth.Often propping up detecting sensor inside has 5 resistances to be the detection resistor R of 2k Ω, one end parallel connection.All detection resistor R 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.The stainless steel contact C of protection diode protection detecting sensor D11, D12, D13, D14, D15, D21, D22, D23, D24, D25, D31, D32, D33, D34, D35, D41, D42, D43, D44, D45 avoids detecting the electrolytic reaction corrosion that electric current causes.Stainless steel contact C is disc, diameter 10 millimeters, is embedded in the survey sensor be made up of resin-based insulating material on the surface, directly can contacts with measured medium diesel oil or bittern.In 20 detecting sensors, the upper and lower two ends of D12, D13, D14, D15, D22, D23, D24, D25, D32, D33, D34, D35, D42, D43, D44, D45 all have cable to connect packoff, and detecting sensor D11, D21, D31, D41, only top are single-ended has cable to connect packoff.Cable connects packoff and is used for being tightly connected between detecting sensor and single core sheathed cable.At detecting sensor D12, D13, D14, D15, D22, D23, D24, D25, D32, D33, D34, D35, D42, D43, D44, D45 lower inside, the parallel wire detecting resistor R in parallel connection is connected between packoff with the cable below detecting sensor, series connection access 1 12V votage control switch Kv.12V votage control switch Kv disconnects when its both end voltage is less than or equal to 12V, is greater than 12V conducting.When 12V votage control switch Kv is used in water-oil interface detection, 5 detecting sensors that the 1 single core sheathed cable selected single core sheathed cable selector switch K3 connects, application detects voltage-selected switch K1, select respectively to detect voltage Vc1-Vc5, individually water-oil interface measurement is carried out to 5 detecting sensors.
20 detecting sensor D thickness are 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 30MPa.Detecting sensor detects the underground work degree of depth and is greater than 3000 meters.
Ground checkout equipment M of the present utility model uses 4 core combinations sheathed cable L and 20 detecting sensor connection layout.Ground checkout equipment M is connected by 4 single core sheathed cable L1, L2, L3, L4 of combination sheathed cable L with 20 the detecting sensor D being positioned at down-hole.Every root list core sheathed cable connects 5 detecting sensors.Single core sheathed cable connects L1 and connects D11, D12, D13, D14, D15, single core sheathed cable connects L2 and connects D21, D22, D23, D24, D25, single core sheathed cable connects L3 and connects D31, D32, D33, D34, D35, and single core sheathed cable connects L4 and connects D41, D42, D43, D44, D45.Often organizing between 5 detecting sensors uses single core sheathed cable to be connected in series.
When carrying out water-oil interface detection, 5 detecting sensors connected separately 4 single core sheathed cable L4, L3, L2, L1 successively from top to bottom use-12V ,-24V ,-36V ,-48V ,-60V five to detect power supply gating measurement from top to bottom, determine profit position until detect.
Figure 10 controls the concrete structure schematic diagram of ground detector in series and parallel compensated resistance device formula underground oil-water interface detection systems for a kind of votage control switch that the utility model provides, as shown in Figure 10, described ground detector 1 comprises voltage stabilizing and detects power supply 11, detects the detection reometer 12 that power supply is connected and the detector switch 13 be connected with described detection reometer with described voltage stabilizing.
The circuit theory diagrams of the specific embodiment of a kind of votage control switch control series and parallel compensated resistance device formula underground oil-water interface detection systems that Figure 11 provides for the utility model, as shown in Figure 11, in this specific embodiment, described ground detector detects power supply Vc1-Vc5, detection reometer A, detection voltage-selected switch K1, test button K switch 2 and single core sheathed cable selector switch K3 by M by the-12V voltage stabilizing of 5 series connection and forms.Detecting voltage-selected switch K1 has 5 to select shelves ,-12V measuring voltage Vc1 ,-24V measuring voltage Vc2 in the-12V voltage stabilizing that 5 can be selected respectively to connect detection power supply ,-36V measuring voltage Vc3 ,-48V measuring voltage Vc4 ,-60V voltage Vc5.Single core sheathed cable selector switch K3 can respectively in gating 4 single core sheathed cable L1, L2, L3, L4 1 measure.Test button K switch 2 is in order to connect water-oil interface sense channel.Single core sheathed cable selector switch K3, in order to gating 4 single core sheathed cable one of L1, L2, L3, L4, detects the water-oil interface height on 5 sensors of this single core sheathed cable connection.
Below in conjunction with Fig. 9, Figure 11, introduce the course of work that votage control switch of the present utility model controls series and parallel compensated resistance device formula underground oil-water interface detection systems.
Downhole detection sensor is installed and is gone into the well in process, according to making chamber engineering design requirements, 4 groups of 20 detecting sensors being arranged on respectively from bottom to top and different making chamber height and position.Series connection in 4 groups of 20 detecting sensor groups, being installed in parallel after going into the well between group, 20 detecting sensors is measured medium between stainless steel contact C and open hole section.Measured medium type depends on that diesel oil injects the degree of depth, or is the diesel oil of insulator, or is the bittern of conductor.
The detection power supply Vc positive pole of ground checkout equipment is connected to sheathed cable L outer armor (greatly).-12V ,-24V ,-36V ,-48V ,-60V five detects power supply and uses detection voltage-selected switch K1 to select one, reometer A, button switch K 2 after testing, be connected to 1 single core sheathed cable heart yearn that single core sheathed cable selector switch K3 selects, form a water-oil interface measure loop.
When carrying out water-oil interface detection, from top to bottom successively to 5 detecting sensors gating measurement from top to bottom that 4 single core sheathed cable L4, L3, L2, L1 connect separately, determine profit position until detect.
First use single core sheathed cable L4 that single core sheathed cable selector switch K3 selects, water-oil interface detection is carried out to detecting sensor D41, D42, D43, D44, D45.
In the process that detecting sensor is gone into the well, on use cable fixing clamp/clip to be fixed on by 4 cores combination sheathed cable L column that every root goes into the well.Due to 4 cores combination sheathed cable L outer armors 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.
C stake resistance Rd=ρ/2, stainless steel contact π α (ρ: bittern resistivity, α: the radius of semisphere stainless steel contact).Because bittern electricalresistivityρ is not easy to detect, the direct calibrated and calculated of method of demarcating is adopted the On current of a stainless steel contact C in bittern.Detailed process is as follows.
Go into the well in installation process, when 5 detecting sensor D41 that single core sheathed cable connection L4 connects, 25 stainless steel contact C of D42, D43, D44, D45 are all in bittern, use and detect voltage-selected switch K1 selection-12V measuring voltage Vc1, use single core sheathed cable selector switch K3 to select single core sheathed cable to connect L4, water-oil interface detection is carried out to detecting sensor D45.5 stainless steel contact C on detecting sensor D45 all have detection electric current to pass through.Detect electric current I c=5 (Vc1-Vd)/(Rl+R+Rd).Calculate (Vc-Vd)/(Rl+R+Rd) value, be the current value of 1 stainless steel point contact C in bittern, complete the staking-out work of the turn on current value of 1 stainless steel contact C in bittern.This Calibrated current value is measured for the water-oil interface of 20 sensors in down-hole.
20 detecting sensor D and 4 cores combination sheathed cable L go into the well after installation, on ground, 4 single core sheathed cables of 4 core combination sheathed cable L are connected L1, L2, L3, L4 and are connected with the ground checkout equipment M of detector for oil-water interface respectively.After salt hole air reserved storeroom makes chamber commencement of works, make and inject diesel oil the sixth of the twelve Earthly Branches between chamber outer tube and the bore hole borehole wall.When needs detect water-oil interface, first use and detect voltage-selected switch K1 selection-12V measuring voltage Vc1, use single core sheathed cable selector switch K3 to select single core sheathed cable to connect L4, the D45 in 5 the detecting sensor D41 connected single core sheathed cable L4, D42, D43, D44, D45 carries out water-oil interface detection.When D45 is in diesel oil, uses and detect voltage-selected switch K1 selection-24V measuring voltage Vc2, connect the 12V votage control switch Kv in detecting sensor D45, water-oil interface detection is carried out to detecting sensor D44.When D44 is in diesel oil, uses and detect voltage-selected switch K1 selection-36V measuring voltage Vc43, connect the 12V votage control switch Kv in detecting sensor D45, D44, water-oil interface detection is carried out to detecting sensor D43.When D43 is in diesel oil, uses and detect voltage-selected switch K1 selection-48V measuring voltage Vc4, connect the 12V votage control switch Kv in detecting sensor D45, D44, D43, water-oil interface detection is carried out to detecting sensor D42.When D42 is in diesel oil, uses and detect voltage-selected switch K1 selection-60V measuring voltage Vc5, connect the 12V votage control switch Kv in detecting sensor D45, D44, D43, D42, water-oil interface detection is carried out to detecting sensor D41.
When water-oil interface are not in 5 detecting sensor D41 that single core sheathed cable L4 connects, D42, D43, D44, D45, use single core sheathed cable selector switch K3 to select single core sheathed cable to connect L3,5 the detecting sensor D31 connected single core sheathed cable L3, D32, D33, D34, D35 carry out water-oil interface detection by said process.
When water-oil interface are not in 5 detecting sensor D31 that single core sheathed cable L3 connects, D32, D33, D34, D35, use single core sheathed cable selector switch K3 to select single core sheathed cable to connect L2,5 the detecting sensor D21 connected single core sheathed cable L2, D22, D23, D24, D25 carry out water-oil interface detection by said process.
When water-oil interface are not in 5 detecting sensor D31 that single core sheathed cable L3 connects, D32, D33, D34, D35, use single core sheathed cable selector switch K3 to select single core sheathed cable to connect L1,5 the detecting sensor D11 connected single core sheathed cable L1, D12, D13, D14, D15 carry out water-oil interface detection by said process.
Till above-mentioned testing process proceeds to measure water-oil interface.
Use and detect voltage-selected switch K1 selection-12V measuring voltage Vc1, Pen-down detection button switch K 2 connects measure loop.Because measuring voltage Vc1 is not more than 12V, the 12V votage control switch Kv of detecting sensor D42, D43, D44, D45 interior lower end is all in off-state, and-12V measuring voltage Vc1 can only detect detecting sensor D45.5 stainless steel contact C on detecting sensor D45 and between open hole section (greatly), measured medium is diesel oil time, to the sensor internal of stainless steel contact C should detecting resistor R no current and pass through, measure current value Ic=0, measure detecting sensor D45 and be in diesel oil.
When between 5 stainless steel contact C and open hole section (greatly) of detecting sensor D45, measured medium is bittern, 5 sensor internals detect resistor R has electric current to pass through.This measurement current value equals the 0.7V voltage drop Vd that 12V measuring voltage Vc deducts protection diode d, is worth sum divided by cable resistance value Rl is in parallel with the stake resistance Rd of 5 detection resistor R and stainless steel contact C.Cable length of going into the well is given value, can calculate cable resistance value Rl from every meter, cable length resistance value.Stainless steel contact is semisphere, radius 5 millimeters, stake resistance Rd=ρ/2 π α (ρ: bittern resistivity, α: the radius of semisphere stainless steel contact).The radius α of bittern electricalresistivityρ and semisphere stainless steel contact is definite value, so stake resistance Rd is also definite value.When the upper part stainless steel contact C of 5 stainless steel contact C of detecting sensor D45 is in diesel oil, when low portion stainless steel contact C is in bittern, upper part stainless steel contact C passes through without detection electric current, and low portion stainless steel contact C has detection electric current to pass through.Detect electric current I c=n (Vc-Vd)/(Rl+R+Rd), n is the quantity of detecting sensor D45 low portion stainless steel contact C in bittern.(Vc-Vd)/(Rl+R+Rd) is the turn on current value of 1 stainless steel contact C in bittern, because Vc, Vd, Rl, R, Rd are given value, (Vc-Vd)/(Rl+R+Rd) is also given value, and the detection electric current I c of acquisition is also given value.The quantity n=Ic/ of stainless steel contact, detecting sensor D45 bottom C in bittern [(Vc-Vd)/(Rl+R+Rd)] can be calculated thus.Measuring voltage Vc=Vc1=-12V.Because detecting sensor D45 fitting depth position is determined, 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 water-oil interface.N is 0,1,2,3,4,5.
Use and detect voltage-selected switch K1 and select-12V measuring voltage Vc1, as measurement current value Ic=0, measure detecting sensor D45 when being in diesel oil, use and detect voltage-selected switch K1 and select-24V measuring voltage Vc2 to measure.12V votage control switch Kv now in detecting sensor D45 connects, and the 12V votage control switch Kv in D42, D43, D44 is still in off-state, and-24V measuring voltage Vc2 can only water-oil interface on detecting sensor D44.Because the 12V votage control switch Kv in detecting sensor D45 has 12V voltage drop, the measuring voltage on detecting sensor D4 is also Vc=Vc2-Vc1=-12V.Detecting sensor D44 measuring process is identical with detecting sensor D45 measuring process.
When detecting sensor D44 measures current value Ic=0, measure detecting sensor D44 when being in diesel oil, use and detect voltage-selected switch K1 and select-36V measuring voltage Vc3 to measure.12V votage control switch Kv now in detecting sensor D44, D55 connects, and the 12V votage control switch Kv in D42, D43 is still in off-state, and-36V measuring voltage Vc3 can only water-oil interface on detecting sensor D43.Because the 12V votage control switch Kv in detecting sensor D44, D45 all has 12V voltage drop, the measuring voltage on detecting sensor D43 is also Vc=Vc3-Vc2=-12V.Detecting sensor D43 measuring process and detecting sensor D44, D45 measuring process are identical.
When detecting sensor D43 measures current value Ic=0, measure detecting sensor D43 when being in diesel oil, use and detect voltage-selected switch K1 and select-48V measuring voltage Vc4 to measure.12V votage control switch Kv now in detecting sensor D43, D44, D45 connects, and the 12V votage control switch Kv in D42 is still in off-state, and-48 measuring voltage Vc3 can only water-oil interface on detecting sensor D42.Because the 12V votage control switch Kv in detecting sensor D43, D44, D45 all has 12V voltage drop, the measuring voltage on detecting sensor D42 is also Vc=Vc4-Vc3=-12V.Detecting sensor D42 measuring process and detecting sensor D43, D44, D45 measuring process are identical.
When detecting sensor D43 measures current value Ic=0, measure detecting sensor D42 when being in diesel oil, use and detect voltage-selected switch K1 and select-60V measuring voltage Vc5 to measure.12V votage control switch Kv now in detecting sensor D42, D43, D44, D45 connects, and-60V measuring voltage Vc3 can only water-oil interface on detecting sensor D41.Because the 12V votage control switch Kv in detecting sensor D42, D43, D44, D45 all has 12V voltage drop, the measuring voltage on detecting sensor D1 is also Vc=Vc5-Vc4=-12V.Detecting sensor D1 measuring process and detecting sensor D42, D43, D44, D45 measuring process are identical.
If water-oil interface detect determine 5 detecting sensor D41 that single core sheathed cable L4 connects, D42, D43, D44, D45 be in diesel oil, use single core sheathed cable L3 that single core sheathed cable selector switch K3 selects, water-oil interface detection is carried out to detecting sensor D31, D32, D33, D34, D35.
If water-oil interface detect determine 5 detecting sensor D31 that single core sheathed cable L3 connects, D32, D33, D34, D35 be in diesel oil, use single core sheathed cable L2 that single core sheathed cable selector switch K3 selects, water-oil interface detection is carried out to detecting sensor D21, D22, D23, D24, D25.
If water-oil interface detect determine 5 detecting sensor D21 that single core sheathed cable L3 connects, D22, D23, D24, D25 be in diesel oil, use single core sheathed cable L2 that single core sheathed cable selector switch K3 selects, water-oil interface detection is carried out to detecting sensor D11, D12, D13, D14, D15.
Carry out above-mentioned testing process until measure water-oil interface.
In sum, the utility model provides a kind of votage control switch and controls series and parallel compensated resistance device formula 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 100 DEG C and the hyperbaric environment of 30Mpa, 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 water-oil interface proposes, the votage control switch that is made up of multiple oil-water interface detection sensor and ground detector controls series and parallel compensated resistance device formula underground oil-water interface detection systems can water-oil interface under measuring well, realize the continuous coverage at underground oil-water interface, improve underground oil-water Interface detection depth range and measuring accuracy, 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.
The beneficial effects of the utility model are:
The utility model uses 4 single core sheathed cable L1, L2, L3, L4 stranded composition 4 core armouring combination cable L, 4 every roots of single core sheathed cable L1, L2, L3, L4 connect 5 downhole detection sensors, apply 20 detecting sensor D altogether and carry out underground oil-water Interface detection.Every downhole detection sensor D grows 1 meter, and the detection depth range of 20 detecting sensor D reaches 20 meters.20 detecting sensor D configure with 5 meters of intervals, and the scope of fathoming reaches 100 meters, can meet salt hole air reserved storeroom deep-well and make in the process of chamber the water-oil interface whole process detection of housing depth and the requirement of continuous detecting.
Detecting sensor D of the present utility model uses and detects resistor R as main circuit device, there are 3 effects: in (1) sensor D, there is no thermally sensitive electron device, reduce the impact of down-hole high temperature on sensor internal circuit, improve the underground work life-span of sensor D and install and measure well depth.(2) circuit devcie quantity is reduced to corresponding each stainless steel contact C only has a detection resistor R and to protect diode d, and sensor internal circuit devcie quantity is few, reduces the failure 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 30MPa of high sealing of detecting sensor D of the present utility model, maximum operating temperature 100 DEG C, maximum oil water termination detects the degree of depth 3000 meters, can meet China's gas storage cavern and make water-oil interface in the engineering of chamber and detect the requirement of above-mentioned 3 parameters.
-12V the voltage stabilizing that the utility model ground detection instrument M adopts 5 to connect detects power supply Vc1-Vc5 composition and detects power supply Vc, the positive termination the earth of Vc.The negative terminal of-12V voltage stabilizing detection power supply Vc1-the Vc5 of 5 series connection only has 1 to connect 1 single core sheathed cable heart yearn respectively in testing process; in conjunction with the polarity protection diode d in detecting sensor D, can not corroded by electrolytic reaction by the stainless steel contact C on available protecting detecting sensor D.
In the utility model ground detection instrument M testing process, use detecting sensor D built-in-12V votage control switch Kv,-12V voltage stabilizing detection power supply Vc1-the Vc5 that 4 groups 5 can be used to connect independently detects the water-oil interface situation in 1 detecting sensor from top to bottom, effective impact getting rid of below detecting sensor cable connectors and stube cable electric leakage, ensure that the normal measurement of water-oil interface, improve the measuring accuracy of water-oil interface.
In the difference testing process of 4 groups of 20 detecting sensor D11, D12, D13, D14, D15, D21, D22, D23, D24, D25, D31, D32, D33, D34, D35, D41, D42, D43, D44, D45, every detecting sensor actual measurement voltage Vc=-12V.By measuring current value Ic, according to known parameters, application n=Ic/ [(Vc-Vd)/(Rl+R+Rd)] measure equation calculates n value, and can calculate the depth location of water-oil interface in this detecting sensor, error is less than 20 centimetres.Because every detecting sensor fitting depth position is determined, 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 water-oil interface, error is less than 20 centimetres.N is 0,1,2,3,4,5.The utility model uses 4 groups of 20 detecting sensors with 5 strings 4 and mode carries out water-oil interface detection, and the scope of fathoming can reach 20 meters.
Detecting sensor D of the present utility model uses and detects resistor R as main circuit device, there are 3 effects: not to responsive to temperature electron device in (1) sensor D, 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 detection resistor R and to protect diode d, and sensor internal circuit devcie quantity is few, reduces the failure 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 utility model uses 4 single core sheathed cable L1, L2, L3, L4 stranded composition 4 core armouring combination cable L, 4 every roots of single core sheathed cable L1, L2, L3, L4 connect 5 downhole detection sensors, apply 20 detecting sensor D altogether and carry out underground oil-water Interface detection.Every downhole detection sensor D grows 1 meter, and the detection depth range of 20 detecting sensor D reaches 20 meters.20 detecting sensor D configure with 5 meters of intervals, and measurement range reaches 100 meters, can meet salt hole air reserved storeroom and make in the process of chamber the water-oil interface whole process detection of housing depth and the requirement of continuous detecting.
Detecting sensor uses resistor as main Detection theory device, because resistor has higher serviceability temperature compared with electron device, detecting sensor of the present utility model normally can work in the environment of 100 DEG C, down-hole, normally water-oil interface can be measured at the well depth of 3000 meters, can fully meet China deep-well salt hole air reserved storeroom build in water-oil interface detect needs, what meet deep-well down-hole salt hole air reserved storeroom 5 to 6 years makes non-fault testing requirement in the cycle of chamber.
Those skilled in the art can also recognize that the various functions that the utility model embodiment 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 the protection of the utility model embodiment.
Apply specific embodiment in the utility model to set forth principle of the present utility model and embodiment, the explanation of above embodiment just understands method of the present utility model and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present utility model, all will change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (13)
1. votage control switch controls a series and parallel compensated resistance device formula underground oil-water interface detection systems, it is characterized in that, described votage control switch controls series and parallel compensated resistance device formula 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 combination sheathed cable;
Described oil-water interface detection sensor group is made up of 20 oil-water interface detection sensors.
2. votage control switch according to claim 1 controls series and parallel compensated resistance device formula underground oil-water interface detection systems, it is characterized in that, described oil-water interface detection sensor group is made up of 4 groups of oil-water interface detection sensor groups of parallel connection, and each oil-water interface detection sensor group is made up of the oil-water interface detection sensor of 5 series connection.
3. votage control switch according to claim 2 controls series and parallel compensated resistance device formula 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 resistor and multiple diode, and each described resistor 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 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 series and parallel compensated resistance device formula underground oil-water interface detection systems, and it is characterized in that, the quantity of described resistor is identical with the quantity of the quantity of described diode, described stainless steel contact.
5. votage control switch according to claim 4 controls series and parallel compensated resistance device formula underground oil-water interface detection systems, and it is characterized in that, the quantity of described resistor is 5.
6. votage control switch according to claim 5 controls series and parallel compensated resistance device formula underground oil-water interface detection systems, and it is characterized in that, described oil-water interface detection sensor also comprises the cable seal web member being arranged on upper end.
7. votage control switch according to claim 5 controls series and parallel compensated resistance device formula underground oil-water interface detection systems, it is characterized in that, described oil-water interface detection sensor also comprises the cable seal web member being arranged on upper end, the cable seal web member being arranged on bottom.
8. votage control switch according to claim 7 controls series and parallel compensated resistance device formula 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 web member of described bottom being arranged on described resistor.
9. the votage control switch according to claim 6 or 8 controls series and parallel compensated resistance device formula 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 sealing is withstand voltage is 30Mpa, it is 3000 meters that maximum oil water termination detects the degree of depth, and maximum operating temperature is 100 DEG C.
10. votage control switch according to claim 8 controls series and parallel compensated resistance device formula underground oil-water interface detection systems, and it is characterized in that, described base plate is made up of resin-based insulating material.
11. votage control switches according to claim 8 control series and parallel compensated resistance device formula 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.
12. votage control switches according to claim 8 control series and parallel compensated resistance device formula underground oil-water interface detection systems, it is characterized in that, described combination sheathed cable forms by 4 single core sheathed cables are stranded.
13. votage control switches according to claim 1 or 8 control series and parallel compensated resistance device formula underground oil-water interface detection systems, it is characterized in that, described ground detector comprises voltage stabilizing and detects power supply, detects the detection reometer that power supply is connected and the detector switch be connected with described detection reometer with described voltage stabilizing.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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2014
- 2014-12-30 CN CN201420858268.4U patent/CN204373734U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
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| C14 | Grant of patent or utility model | ||
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150603 |