CN1067738C - Underground electromagnetic flowmeter - Google Patents
Underground electromagnetic flowmeter Download PDFInfo
- Publication number
- CN1067738C CN1067738C CN 96117840 CN96117840A CN1067738C CN 1067738 C CN1067738 C CN 1067738C CN 96117840 CN96117840 CN 96117840 CN 96117840 A CN96117840 A CN 96117840A CN 1067738 C CN1067738 C CN 1067738C
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- Prior art keywords
- electrode
- ballasting
- cabin
- flow meter
- underground electromagnetic
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- Expired - Fee Related
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 19
- 239000000523 sample Substances 0.000 claims description 20
- 239000010720 hydraulic oil Substances 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 238000007789 sealing Methods 0.000 claims description 6
- 239000000463 material Substances 0.000 claims description 3
- 239000002184 metal Substances 0.000 claims description 3
- 229910052751 metal Inorganic materials 0.000 claims description 3
- 239000012528 membrane Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 2
- 238000005259 measurement Methods 0.000 abstract description 7
- 238000000034 method Methods 0.000 abstract description 3
- 230000035945 sensitivity Effects 0.000 abstract description 2
- 229910000831 Steel Inorganic materials 0.000 abstract 1
- 239000010959 steel Substances 0.000 abstract 1
- 238000010586 diagram Methods 0.000 description 5
- 238000002347 injection Methods 0.000 description 4
- 239000007924 injection Substances 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000006353 environmental stress Effects 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000005674 electromagnetic induction Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000005055 memory storage Effects 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
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Abstract
The invention relates to a device for measuring underground water flow by an electromagnetic method, in particular to an underground electromagnetic flowmeter. The device can be powered by a cable and used for recording on the well, and can also be designed to be additionally provided with a downhole power supply and downhole storage recording circuit and used for descending the well by using a steel wire rope. The device has the advantages of simple structure, convenient use, high measurement precision and high sensitivity.
Description
The present invention relates to a kind of downhole flow electromagnetic method determinator of water injection well in oil fields.
The zonal flow rate of water injection well in oil fields down-hole is measured both at home and abroad at present, all adopts suspended body flowmeter or turbine flowmeter, and these two kinds of flow meters all are to obtain flow signal by injecting water impulsion mechanical movable part.In order to make mechanical movable part not stuck by impurity such as silt particles, water quality and the downhole conditions of injecting water proposed high requirement, this can't adapt to the technological requirement of the produced-water reinjection of doing one's utmost at present to promote and extensively adopting, and the application life of mechanical flow meter is short, and certainty of measurement is lower.
Being seen electromagnetic flowmeter on the market though have no mechanical movable part, characteristics that certainty of measurement is high, all adopts the current straight-through type flow passage, can't use under small size space, down-hole and hyperbaric environment, only is applicable to that ground uses.
The patented technology (utility model patent notification number CN2098009U) that name is called " a kind of electromagnetic flowmeter " discloses a kind of electromagnetic flowmeter that is used to measure the volume flow of acid, alkali, salt conducting solution and media such as ore pulp, mud, it is characterized in that guard shield and measuring tube are to pour into a mould with uniting two into one or be injection molded into a straight-through pipe with non-magnet material, though have advantages such as manufacturing process is simple, good seal performance, but straight-through type flow passage can't cooperate with underground power supply used part, thereby is difficult to realize underground data measuring and record.
Purpose of the present invention just is to provide a kind of can be applicable to High Voltage, small size space and any water quality environment, and can add aboveground power supply, directly reads or mine water flow electromagnetic method determinator---" underground electromagnetic flow meter " of underground power supply used, data-storing record.
The invention is characterized in the probe and the non-direct current channel structure that adopt isobaric cabin structure form.
The present invention is achieved in that
Electromagnetic flowmeter of the present invention, monnolithic case as shown in Figure 1, integral body is one cylindric, comprising: probe 1, circuit 2, power supply 3, rope socket 4 several sections.Probe 1 adopts isobaric cabin structure form, and promptly by inside and outside one or several elastic diaphragm cofferdam, detector operation part (coil, iron core) places in the cabin, and the electrode sealing is installed on the interior protection tube barrel.The flow signal receiving terminal exposes out of my cabin, the contact conductor end is in the cabin, flow signal is transferred to circuit 2 by sealing-plug, be full of hydraulic oil in the cabin, when this device was put into the down-hole, environmental stress increased, the elastic diaphragm distortion, compressing hydraulic oil makes the inside and outside pressure in cabin keep equating, thereby has simplified the conditional request of hyperbaric environment bottom electrode sealing.On probe, be provided with non-single flow water inlet flow channel, i.e. side opening runner, the quantity of side opening runner is two or more; The side opening runner can be a straight hole, also inclined hole; Circuit 2 is low consumption circuit designs, can realize the power supply of battery or power supply; Circuit 2 comprises measuring circuit and data storage system, and measuring circuit is amplified processing to the alternate electrical signal of introducing from probe 1 and changed dc signal into, changes survey data again into, the line data of going forward side by side storage.Power supply 3 is powered to circuit 2 with battery or voltage-stabilized power supply; Rope socket 4 connects the go into the well cable or the wire rope of going into the well, and plays simultaneously just in case device falls into the fishing head effect of well.
Above-mentioned probe 1 etc. the elastic diaphragm that adopts of ballasting can make by metal, rubber or other material, shape can be sheet or tubular.
The present invention does not have mechanical movable part, is applicable to produced-water reinjection or contains the sand drain water filling, and the present invention adopts side opening water inlet flow channel and low consumption circuit design, precision and highly sensitive.The single-core cable of both available aboveground power supply and the record mode of going into the well also can adopt underground power supply used, downhole data is handled, the wire rope of down-hole storage record is gone into the well mode (go into the well with wire rope, just save cable and aboveground corresponding corollary equipment thereof).This apparatus structure is simple, and is cheap, easy to use, is applicable to the measurement of discharge under High Voltage, small size space environment and any condition of water quality, the mensuration of suitable especially downhole flow.
The present invention is described in further detail with reference to the accompanying drawings below.
Fig. 1 is the monnolithic case schematic diagram of underground electromagnetic flow meter of the present invention;
Fig. 2 is the generalized section of the probe of underground electromagnetic flow meter of the present invention;
Fig. 3 is the circuit block diagram of embodiment 1;
Fig. 4 is the overall schematic of the embodiment 2 of underground electromagnetic flow meter;
Fig. 5 is the circuit block diagram of embodiment 2.
Embodiment 1:
Fig. 1 is a monnolithic case schematic diagram of the present invention.
This device is a drum, is generally metal cylinder, comprising: probe 1, circuit 2, power supply 3, rope socket 4 etc.Probe 1, circuit 2 and power supply 3 are installed in the outer protection tube of circular cylinder successively, and rope socket 4 is at an end of cylinder.
Fig. 2 is the generalized section of probe 1, probe 1 by etc. ballasting 31, side opening water inlet flow channel 12, delivery port 13 form.Form by several sections such as outer protection tube 5, coil 6, iron core 7, electrode 8, elastic diaphragm 9, hydraulic oil 10, interior protection tubes 11 etc. ballasting 31.
It is that inside and outside protection tube adopts the reliable assurance that realizes high pressure sealing than the thick form of thin-walled that probe of the present invention adopts isobaric cabin structure form.Because down-hole pressure is very high, adopt isobaric cabin structure just may make the protection barrel do enough thinly.Apparatus of the present invention etc. the structure of ballasting 31 be such; inside and outside a tubular elastic membrane cofferdam; coil 6, iron core 7 place in the cabin; protection tube 11 barrels in pair of electrodes 8 sealings that are used to obtain signal are installed in; flow signal receiving terminal (electrode tip of electrode 8) stretches out out of my cabin, and electrode 8 lead ends are transferred to circuit 2 with flow signal by sealing-plug in the cabin; means of press seals such as (electrode 8 itself) being sealed into is full of hydraulic oil 10 in the cabin.When this device was put into the down-hole, environmental stress increased, and etc. elastic diaphragm 9 distortion of ballasting, compressing hydraulic oil 10 makes the inside and outside pressure in cabin keep equating.Designed two (or more than two) inclined holes (or straight hole) inlet channel 12 on probe 1 barrel, delivery port 13 is located at the top of probe 1.The two ends of circuit 2 in succession respectively probe 1 and power supply 3 place in the flow meter cylinder.
Fig. 3 is the composition frame chart of present embodiment circuit 2, and circuit 2 comprises: field drives circuit 15, operational amplifier group 16, phase-sensitive detector 17, voltage- frequency converter 18,19,8 latch 20 of processor of single chip computer, RAM memory 21, RS232 special purpose interface 22, power supply stabilization circuit 23.
When using under this device well measurements, with wire rope this device is connect at the rope socket place earlier and hang up properly, put into the down-hole, current are flow to by side opening runner inlet 12, flow out by delivery port 13, at this moment, in probe 1, utilize the conversion of electromagnetic induction realization from the flow velocity to the signal of telecommunication, measuring circuit operational amplifier group 16 in the circuit 2 is amplified processing to the alternate electrical signal of introducing from probe 1, change direct current signal into by phase-sensitive detector 17, change the pulse frequency value into through voltage-frequency changer 18 again, send into the data memory storage again.After measuring end, this device is pulled on ground, connect ground-based computer, adopt the standard output data of RS232 interface 22, the data on flows that can obtain recording with wire rope.
This device has following advantage:
1. do not have mechanical movable part, be suitable for the flow measurement under any condition of water quality.
2. the injection flow that can be used under the strong condition of down-hole high pressure is measured, and its certainty of measurement reaches ± and 1%.
3. have higher sensitivity, under the low flow velocity of flow velocity 1 mm/second, just can start measuring system.
Embodiment 2:
Electromagnetic flowmeter of the present invention can also save power supply 3 and downhole data storage system under the identical situation of other condition and embodiment 1, realize reading in real time of survey data and show by the electricity cable of going into the well.As shown in Figure 4, this device comprises four parts, promptly single core transmission cable, probe 1, circuit 30 and rope socket 4.Panel detector structure is fully with probe 1 among the embodiment 1.Connect rope socket 4 with single-core cable and go into the well,, and the downhole flow signal is drawn, on the table of ground, read in real time by cable by the aboveground power supply of single-core cable.
Fig. 5 is the built-up circuit block diagram of present embodiment circuit 30, is made up of operational amplifier 24, phase-sensitive detector 25, Voltage-to-frequency Converter 26, field drives circuit 27, power supply stabilization circuit 28, single core transmission cable, aboveground ground table 29 etc.
This device characteristic is can realize reading in real time.
Claims (6)
1. underground electromagnetic flow meter, comprise parts such as detection system, power-supply system, Circuits System, rope socket, inlet and outlet channel, it is characterized in that: the probe of detection system (1) form of structure of ballasting (31) such as is designed to and adopts non-single flow water inlet flow channel (12); Comprise outer protection tube (5), interior protection tube (11), coil (6), iron core (7), elastic diaphragm (9), electrode (8), hydraulic oil (10) etc. ballasting (31); Structure etc. ballasting (31) is by inside and outside the tubular elastic membrane cofferdam; coil (6), iron core (7) place in the cabin; pair of electrodes (8) sealing that is used to obtain signal is installed in interior protection tube (11) barrel; the electrode tip of electrode (8) stretches out out of my cabin; electrode (8) lead end is in the cabin; flow signal is transferred to circuit (2) by sealing-plug, is full of hydraulic oil (10) in the cabin.
2. underground electromagnetic flow meter according to claim 1 is characterized in that etc. can be the used elastic diaphragm (9) of ballasting metal, rubber or other material to make, and is shaped as tubular or sheet.
3. underground electromagnetic flow meter according to claim 2 such as is characterized in that forming at the used elastic diaphragm (9) of ballasting, and quantity can be one or several.
4. underground electromagnetic flow meter according to claim 1 is characterized in that electrode (8) sealing is installed on the barrel of interior protection tube (11), and the protection barrel was arranged in water inlet flow channel in the electrode tip of electrode (8) passed.
5. underground electromagnetic flow meter according to claim 1 is characterized in that non-single flow water inlet flow channel (12) adopts the side opening runner.
6. underground electromagnetic flow meter according to claim 5 is characterized in that the side opening runner can be two or more inclined holes or straight hole passage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117840 CN1067738C (en) | 1996-12-19 | 1996-12-19 | Underground electromagnetic flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 96117840 CN1067738C (en) | 1996-12-19 | 1996-12-19 | Underground electromagnetic flowmeter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1185582A CN1185582A (en) | 1998-06-24 |
| CN1067738C true CN1067738C (en) | 2001-06-27 |
Family
ID=5124657
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 96117840 Expired - Fee Related CN1067738C (en) | 1996-12-19 | 1996-12-19 | Underground electromagnetic flowmeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1067738C (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900649B (en) * | 2014-04-04 | 2016-10-05 | 四川省科学城久利电子有限责任公司 | Electromagnetic flow transducer for downhole water flow regulator |
| ES2796124T3 (en) * | 2015-07-28 | 2020-11-25 | Sentec Ltd | Electromagnetic flow sensor |
-
1996
- 1996-12-19 CN CN 96117840 patent/CN1067738C/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN1185582A (en) | 1998-06-24 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| AR01 | Abandonment of patent right to avoid double patenting |
According to article 9 of the patent law and article 12 of the detailed rules for the implementation of the patent law: The invention patent of 96117840.X is authorized in this issue. At the same time, the 96224226.8 utility model patent shall be given up, and the patent right abandonment announcement shall be made on the 17 edition of the 26 edition of the utility model. |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20010627 Termination date: 20100119 |