CN206074475U - Crude oil water content measurement apparatus based on radio frequency method - Google Patents
Crude oil water content measurement apparatus based on radio frequency method Download PDFInfo
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- CN206074475U CN206074475U CN201621071260.9U CN201621071260U CN206074475U CN 206074475 U CN206074475 U CN 206074475U CN 201621071260 U CN201621071260 U CN 201621071260U CN 206074475 U CN206074475 U CN 206074475U
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- 238000005259 measurement Methods 0.000 title claims abstract description 61
- 238000000034 method Methods 0.000 title claims abstract description 47
- 239000010779 crude oil Substances 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 230000001681 protective effect Effects 0.000 claims abstract description 21
- 238000001514 detection method Methods 0.000 claims abstract description 12
- 230000003321 amplification Effects 0.000 claims abstract description 8
- 238000003199 nucleic acid amplification method Methods 0.000 claims abstract description 8
- 238000007789 sealing Methods 0.000 claims abstract description 5
- 235000019476 oil-water mixture Nutrition 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 5
- 229950000845 politef Drugs 0.000 claims description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000013461 design Methods 0.000 abstract description 3
- 241000406668 Loxodonta cyclotis Species 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 8
- 235000019198 oils Nutrition 0.000 description 8
- 239000007788 liquid Substances 0.000 description 5
- 238000000691 measurement method Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000003129 oil well Substances 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 238000004821 distillation Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 241000321369 Cephalopholis fulva Species 0.000 description 1
- XQCFHQBGMWUEMY-ZPUQHVIOSA-N Nitrovin Chemical compound C=1C=C([N+]([O-])=O)OC=1\C=C\C(=NNC(=N)N)\C=C\C1=CC=C([N+]([O-])=O)O1 XQCFHQBGMWUEMY-ZPUQHVIOSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000012736 aqueous medium Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000009096 changqing Substances 0.000 description 1
- 230000003750 conditioning effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000002847 impedance measurement Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
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- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
Crude oil water content measurement apparatus based on radio frequency method, the left end of inner tube is provided with left adapter, right-hand member is provided with right adapter, the antenna protective jacket that one end is extend in right adapter is provided with the tube wall of right adapter, radio-frequency antenna is provided with antenna protective jacket, one end that antenna protective jacket is located in inner tube is provided with plug, sealing ring is provided between the tube wall of antenna protective jacket and right adapter, trocar sheath is provided with outside inner tube, the radio frequency method measurement apparatus for display being provided with trocar sheath and being connected with display by wire, described radio frequency method measurement apparatus include radio-frequency signal generator, signal amplification unit, radio-frequency power detection unit, measurement resistance, signal condition unit, controller, this utility model has reasonable in design, simple structure, certainty of measurement is high, wide ranges, it is adapted to each elephant to use.
Description
Technical field
This utility model belongs to measurement apparatus or equipment technical field, and in particular to the crude oil water content based on radio frequency method
Measurement apparatus.
Background technology
In crude oil production process, be rationally efficiently can estimate oily well capacity, assessment oil well working condition with
And the reasonable distribution of the cost such as required manpower and materials, many measuring parameters have been formulated as evaluating standard.Wherein crude oil water content
It is the important Reservoir Data of oil well, and main manufacturing parameter.Whether the measurement of moisture content data accurately directly influences
The no production status that can timely and accurately grasp, understand each payzone, so as to Instructing manufacture of taking this as a foundation, adopt an effective measure or
Improve technique and carry out the rational exploitation energy, oil well is made in normal or optimum Working, be finally reached raising oil development efficiency
With the purpose for improving oil recovering efficiency.
At present, domestic external pelivimetry crude oil water content is broadly divided into manual measurement method and on-line measurement method.
Traditional Man measurement method mainly by manual sampling, is divided into the de- method of the way of distillation, electricity according to oil-water separation means difference
Deng.However, the de- method of electricity is although simple to operate, but error is larger.Way of distillation off-line measurement method is due to needing sampling, time of measuring
Long, hand labor intensity is big, and randomness is strong, and error is big, it is impossible to be satisfied with real time the accurately engineering demand of measurement, it is impossible to reflect
The practical situation of crude oil water content.
Crude oil in China moisture content Research on on-line-measuring is started late, and on-line measurement method mainly has electrical conductivity method, ray method, close
Degree method, radio frequency method etc..Wherein electrical conductivity method is by the electrode retaining collar being pre-installed in pipeline, by between measuring electrode ring
Mixed phase electrical conductivity reaches measurement purpose.Many researcheres have made extensive work in this respect, and Coney was just described in 1973
Parallel pole property in liquid layer, it is proposed that liquid thickness and fall typical theoretical treatment method；Hewitt then elaborates this
The comprehensive prospect of technology.It is but electrical conductivity method is only suitable for the oil water mixture of High water cut, poor in the accuracy of measurement of low-water-content,
And affected larger by salinity etc..
Determined that the thought of multi-phase mixed liquid voidage be suggested using ray attenuation method in 1964, its principle is to utilize
Oil, aqueous medium are different to the degree of absorption of low-energyγ-ray, the intensity in transmission meter after detecting that ray penetrates oil water mixture
Calculate crude oil water content.The research worker of Mechanical and Electronic Engineering Department of Calgary universities in 1979 measures multiphase flow split-phase with the method
Containing rate, subsequent Asali, Andreussi et al. successively carry out expansion application to the method based on theoretical basiss.But ray method is only
The local message in pipeline can be measured, equipment price is expensive, and ray has inevitable radioactivity to human body.
Densimetry realizes what is measured based on the oil of crude oil, water tow phase model, is according to public after known mixed liquor quality
Formula obtains mixed liquor density, and then using profit density difference calculating crude oil water content.Measurement apparatus based on densimetry are tied
Structure is simple, but due to being affected containing sand, gassiness etc. by oil-water mixture, has high level error to crude oil.
Radio frequency method is the original for causing the RF impedance characteristic is presented by measurand different based on profit dielectric constant difference
Reason, determines the impedance operator change is presented to radiofrequency signal by profit mixed liquor by sensor probe, so as to be converted into telecommunications
Number, measure then the water content of crude oil.It is compared with above several method, low, easy to maintenance with simple structure, equipment cost
Advantage.China National Petroleum company proposes a kind of on-line measurement dress of crude oil water content of wellhead based on radio frequency method within 2015
Put, but be only applicable to Changqing oilfields, and well head measurement can only be carried out, not with popularization.
Therefore design the strong online crude oil water containing of a kind of simple structure, measurement range width, real time and reliability height, popularization
Rate measurement apparatus are extremely urgent.
Utility model content
Technical problem to be solved in the utility model is to overcome that existing crude oil water content method error of measuring is big, measurement
The not high shortcoming of narrow range, popularization, there is provided a kind of reasonable in design, simple structure, certainty of measurement height, wide ranges, be adapted to it is each greatly
The crude oil water content measurement apparatus based on radio frequency method in oil field.
Solving the technical scheme that adopted of above-mentioned technical problem is：The left and right two ends of inner tube are respectively arranged with left adapter, the right side
Adapter, is machined with installing hole on the tube wall of right adapter, the antenna protection that one end is extend in right adapter is provided with installing hole
Set, is provided with radio-frequency antenna in antenna protective jacket, one end that antenna protective jacket is located in inner tube is provided with plug, antenna protective jacket
Sealing ring is provided with and the tube wall of right adapter between, trocar sheath outside inner tube, is provided with, display is provided with trocar sheath and is penetrated
Frequency method measurement apparatus, display are connected by wire with radio frequency method measurement apparatus, and described radio frequency method measurement apparatus include radio frequency
Signal generator, signal amplification unit, radio-frequency power detection unit, measurement resistance, signal condition unit, controller；Above-mentioned
Controller, produces the radiofrequency signal that frequency f is 35～40MHz for controlling described radio-frequency signal generator, and, will be described
The signal of telecommunication that sends of signal condition unit be converted into crude oil water content data and shown by described display；Above-mentioned radio frequency
Signal generator produces radiofrequency signal through signal amplification unit and measurement resistance, is transmitted into by radio-frequency antenna with oil mixing with water
Liquid is in the load of medium；Above-mentioned radio-frequency power detection unit, for detecting the both end voltage of measurement resistance, and will be surveyed
Voltage signal is input to signal condition unit and is filtered processing and amplifying.
Inner tube of the present utility model is non-magnetic stainless steel tube.
Antenna protective jacket of the present utility model is politef set.
Radio-frequency antenna of the present utility model is silver-plated solid copper bar.
A diameter of 6mm of radio-frequency antenna of the present utility model, length are 200mm.
Critesistor is embedded with outer wall of inner tube of the present utility model, critesistor is connected with radio frequency method measurement apparatus 5, is used for
Temperature-compensating.
The beneficial effects of the utility model are as follows：
This crude oil water content measurement apparatus based on radio frequency method of the present utility model are by radio-frequency antenna and oil water mixture
Directly it is fully contacted, improves measurement range, there are politef protective case and plug in outside, convenient to safeguard in the future and reduce radio frequency
The damage of antenna；This utility model simple structure, directly by left adapter and right is connect by bolt and installing hole when mounted
Enter in crude oil main pipeline, while being easy to remove and repair, be adapted to each elephant and measure water content rate of petroleum, with higher popularization, can
Large-scale promotion is used；This utility model is directly to caused because of curent change in the different caused circuit loops of RF impedance
Measurement resistance terminal change in voltage is measured, and measurement resistance two ends are connected with radio-frequency antenna and circuit respectively, are reduced measurement and are missed
Difference, expands measurement range；Radio-frequency power detection unit carries out peak detection to sinusoidal wave form, it is ensured that signal stabilization, reliable；
Radio-frequency signal generator AD9851 kernel application DDS direct digital frequency synthesis technologies, with high precision, good stability, in control
Can accurately and quickly processing frequency and phase place under the control of device processed.
Description of the drawings
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of radio frequency method measurement apparatus 5 in Fig. 1.
Specific embodiment
With reference to the accompanying drawings and examples to this utility model further describe, but this utility model be not limited to it is following
Embodiment.
In FIG, the crude oil water content measurement apparatus based on radio frequency method of the present embodiment are by left adapter 1, trocar sheath 2, interior
Pipe 3, display 4, radio frequency method measurement apparatus 5, sealing ring 6, screw 7, right adapter 8, radio-frequency antenna 9, antenna protective jacket 10, plug
11 connect and compose.
Inner tube 3 is non-magnetic stainless steel tube, at the left and right two ends of inner tube 3 respectively with being threaded with left adapter 1, right adapter 8,
It is machined with the tube wall of right adapter 8 in installing hole, installing hole and the day that one end is extend in right adapter 8 is provided with by screw 7
Line protective jacket 10, antenna protective jacket 10 are politef set, are provided with radio-frequency antenna 9, radio-frequency antenna 9 in antenna protective jacket 10
For silver-plated solid copper bar, a diameter of 6mm of radio-frequency antenna 9, length are 200mm, and antenna protective jacket 10 is located at the one end in inner tube 3
Plug 11 is installed, radio-frequency antenna 9 is sealed in antenna protective jacket 10, between the tube wall of antenna protective jacket 10 and right adapter 8
Sealing ring 6 is provided with, crude oil seepage is prevented, trocar sheath 2 outside inner tube 3, is arranged with, display 4 is installed on trocar sheath 2 and is penetrated
Frequency method measurement apparatus 5, are embedded with critesistor on 3 outer wall of inner tube, critesistor is connected with radio frequency method measurement apparatus 5, for this
Utility model carries out temperature-compensating, and display 4 is connected by wire with radio frequency method measurement apparatus 5.
Radio frequency method measurement apparatus 5 include radio-frequency signal generator, signal amplification unit, radio-frequency power detection unit, measurement
Resistance, signal condition unit, controller；Controller, is 35MHz for control described radio-frequency signal generator to produce frequency f
Radiofrequency signal, and, the signal of telecommunication that described signal condition unit sends is converted into into crude oil water content data by described
Display 4 show；Radio-frequency signal generator produces radiofrequency signal through signal amplification unit and measurement resistance, by radio frequency day
Line 9 is transmitted in the load with oil-water mixture as medium, model AD9851 of radio-frequency signal generator, measures the resistance of resistance
It is worth for 2 Ω；Radio-frequency power detection unit, for detecting the both end voltage of measurement resistance, and the voltage signal surveyed is input to
Signal condition unit is filtered processing and amplifying.
Operation principle of the present utility model is as follows：
Left adapter 1 and right adapter 8 are accessed in crude oil main pipeline, crude oil is flow through from inner tube 3, filled to radio frequency method measurement
Put 5 to switch on power, described controller controls described radio-frequency signal generator and produces the radio frequency letter that frequency is 35MHz
Number, then the radiofrequency signal is transmitted into crude oil for the negative of medium by radio-frequency antenna 9 through signal amplification unit and measurement resistance
In load；Radio-frequency power detection unit detects both end voltage U of measurement resistance RR, and the voltage signal surveyed is input to into signal
Conditioning unit is filtered processing and amplifying, and controller receives the signal of telecommunication sent by signal condition unit as the following formula
Crude oil water content D is obtained, is shown by display 4, in formula, ε1For the dielectric constant of pure water, ε2Dielectric for pure oil is normal
Number, f are radio frequency signal frequency, and U is radio-frequency transmissions voltage, and to measure resistance, K is 6.981 × 10 to R-13, URTo measure resistance two
The voltage at end, j are imaginary unit.
As the dielectric constant of pure oil is about 3.2, and the dielectric constant of water is about 80, because of both greatest differences, is in
Existing RF impedance also has very big difference, and in the presence of additional radiofrequency signal, the RF impedance of the load will be because of oil well output
Different oil-water ratio in liquid and there is respective change, so as to cause electric current in circuit loop to change, curent change will
Cause the change in voltage at detection resistance two ends, the both end voltage of measurement resistance is measured by radio-frequency power detection unit, and will
The voltage signal delivers to controller, and the voltage signal is converted into crude oil water content D and is shown by display 4, reached by controller
To the purpose of measurement crude oil water content, meanwhile, critesistor is that this utility model provides temperature-compensating, raising certainty of measurement and surely
It is fixed to spend.
Claims (6)
1. crude oil water content measurement apparatus based on radio frequency method, it is characterised in that：The left end of inner tube (3) is provided with left adapter
(1), right-hand member is provided with right adapter (8), is provided with the antenna that one end is extend in right adapter (8) on the tube wall of right adapter (8)
Radio-frequency antenna (9), antenna protective jacket (10) in inner tube (3) are provided with protective jacket (10), antenna protective jacket (10)
End is provided with plug (11), and sealing ring, inner tube (3) peripheral hardware are provided between antenna protective jacket (10) and the tube wall of right adapter (8)
Trocar sheath (2) is equipped with, the radio frequency method measurement for display (4) being provided with trocar sheath (2) and being connected with display (4) by wire
Device (5), described radio frequency method measurement apparatus (5) are including radio-frequency signal generator, signal amplification unit, radio-frequency power detection list
Unit, measurement resistance, signal condition unit, controller；
Described controller, produces the radiofrequency signal that frequency f is 35～40MHz for controlling described radio-frequency signal generator,
And, the signal of telecommunication that described signal condition unit sends is converted into into crude oil water content data by described display (4)
Show；
Described radio-frequency signal generator produces radiofrequency signal through signal amplification unit and measurement resistance, by radio-frequency antenna
(9) it is transmitted in the load with oil-water mixture as medium；
Described radio-frequency power detection unit, for detecting the both end voltage of measurement resistance, and the voltage signal surveyed is input into
Processing and amplifying is filtered to signal condition unit.
2. crude oil water content measurement apparatus based on radio frequency method according to claim 1, it is characterised in that：Described inner tube
(3) it is non-magnetic stainless steel tube.
3. crude oil water content measurement apparatus based on radio frequency method according to claim 1, it is characterised in that：Described antenna
Protective jacket (10) is politef set.
4. crude oil water content measurement apparatus based on radio frequency method according to claim 1, it is characterised in that：Described radio frequency
Antenna (9) is silver-plated solid copper bar.
5. crude oil water content measurement apparatus based on radio frequency method according to claim 4, it is characterised in that：Described radio frequency
A diameter of 6mm of antenna (9), length are 200mm.
6. crude oil water content measurement apparatus based on radio frequency method according to claim 1, it is characterised in that：Described inner tube
(3) outer wall is provided with the critesistor for temperature-compensating, and critesistor is connected with radio frequency method measurement apparatus (5).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071260.9U CN206074475U (en) | 2016-09-22 | 2016-09-22 | Crude oil water content measurement apparatus based on radio frequency method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621071260.9U CN206074475U (en) | 2016-09-22 | 2016-09-22 | Crude oil water content measurement apparatus based on radio frequency method |
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| Publication Number | Publication Date |
|---|---|
| CN206074475U true CN206074475U (en) | 2017-04-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621071260.9U Expired - Fee Related CN206074475U (en) | 2016-09-22 | 2016-09-22 | Crude oil water content measurement apparatus based on radio frequency method |
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| CN (1) | CN206074475U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226330A (en) * | 2016-09-22 | 2016-12-14 | 西安石油大学 | Crude oil water content measurement apparatus based on radio frequency method and method |
| CN108535284A (en) * | 2018-06-26 | 2018-09-14 | 西安石油大学 | A kind of double-antenna structure crude oil water content measurement sensor based on radio frequency method |
-
2016
- 2016-09-22 CN CN201621071260.9U patent/CN206074475U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106226330A (en) * | 2016-09-22 | 2016-12-14 | 西安石油大学 | Crude oil water content measurement apparatus based on radio frequency method and method |
| CN108535284A (en) * | 2018-06-26 | 2018-09-14 | 西安石油大学 | A kind of double-antenna structure crude oil water content measurement sensor based on radio frequency method |
| CN108535284B (en) * | 2018-06-26 | 2023-08-22 | 西安石油大学 | Dual-antenna structure crude oil water content measuring sensor based on radio frequency method |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170405 |