CN110487992A - The correcting device and method of crude oil water content - Google Patents
The correcting device and method of crude oil water content Download PDFInfo
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- CN110487992A CN110487992A CN201810454332.5A CN201810454332A CN110487992A CN 110487992 A CN110487992 A CN 110487992A CN 201810454332 A CN201810454332 A CN 201810454332A CN 110487992 A CN110487992 A CN 110487992A
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- 239000010779 crude oil Substances 0.000 title claims abstract description 290
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 169
- 238000000034 method Methods 0.000 title abstract description 18
- 238000012545 processing Methods 0.000 claims abstract description 48
- 230000008676 import Effects 0.000 claims abstract description 6
- 238000012360 testing method Methods 0.000 claims description 77
- 239000000523 sample Substances 0.000 claims description 49
- 239000003921 oil Substances 0.000 claims description 30
- 238000012937 correction Methods 0.000 claims description 24
- 239000007788 liquid Substances 0.000 claims description 16
- 238000002715 modification method Methods 0.000 claims description 12
- 238000001739 density measurement Methods 0.000 claims description 5
- 238000004891 communication Methods 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims 1
- 239000007789 gas Substances 0.000 description 77
- 235000019198 oils Nutrition 0.000 description 26
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 16
- 238000010586 diagram Methods 0.000 description 12
- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 description 10
- 229910052757 nitrogen Inorganic materials 0.000 description 8
- 239000003345 natural gas Substances 0.000 description 5
- 230000008569 process Effects 0.000 description 5
- 239000011800 void material Substances 0.000 description 5
- 238000001514 detection method Methods 0.000 description 4
- 239000003350 kerosene Substances 0.000 description 3
- 238000000926 separation method Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 238000000691 measurement method Methods 0.000 description 2
- 235000019476 oil-water mixture Nutrition 0.000 description 2
- 238000004458 analytical method Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000009795 derivation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000002459 sustained effect Effects 0.000 description 1
- 238000010399 three-hybrid screening Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G01D3/00—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups
- G01D3/028—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure
- G01D3/036—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves
- G01D3/0365—Indicating or recording apparatus with provision for the special purposes referred to in the subgroups mitigating undesired influences, e.g. temperature, pressure on measuring arrangements themselves the undesired influence being measured using a separate sensor, which produces an influence related signal
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/26—Oils; Viscous liquids; Paints; Inks
- G01N33/28—Oils, i.e. hydrocarbon liquids
- G01N33/2823—Raw oil, drilling fluid or polyphasic mixtures
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Abstract
The present invention provides the correcting device and method of a kind of crude oil water content, which includes: temperature sensor, pressure sensor, density tester, detector for water content rate and processing equipment；Temperature sensor, pressure sensor, density tester, detector for water content rate are communicated to connect with processing equipment respectively；The one end of crude oil pipeline close to crude oil import is arranged in temperature sensor, pressure sensor；The one end of crude oil pipeline close to crude exports is arranged in detector for water content rate；The middle part of crude oil pipeline is arranged in density tester.The correcting device of crude oil water content provided by the invention, when obtaining the moisture content of crude oil, it is contemplated that the influence of residual gas improves the accuracy of the crude oil water content of acquisition.
Description
Technical field
The present invention relates to oil gas development technology field more particularly to the correcting devices and method of a kind of crude oil water content.
Background technique
In oilfield exploitation procedure, oil gas water while the output from oil/gas well.The effective oily energy is gentle in order to obtain
The oil gas water mixed liquid of the energy, oil/gas well output is typically passed through gas-liquid separator, by the natural gas in oil gas water mixed liquid at
It separates and is used as the energy, and the detection of moisture content is one of oilfield engineering important in the oil-water mixture after separating
Work, moisture content detection it is accurate whether directly affect the sustainable production of oil gas field.
In the prior art, the detection method of crude oil water content is generally divided into manual measurement method and on-line measurement method, is root
Detected according to oil and the difference of water self character, such as according in oil-water mixture oil and water to the ability to accept of electromagnetic wave not
Together, the moisture content in crude oil is detected by the varying strength of the electromagnetic wave received.
But when the natural gas in oil gas water mixed liquid is gone out through gas-liquid separator separates, due to being segregated device performance
Or the influence of other factors, a certain amount of natural gas is more or less contained in crude oil after gas-liquid separation, and it is existing natural
Gas will cause certain influence to the detection accuracy of crude oil water content, so that there are errors for the testing result of crude oil water content.
Summary of the invention
The present invention provides the correcting device and method of a kind of crude oil water content, obtain through gas-liquid separator separates gas it
When the moisture content of crude oil afterwards, it is contemplated that the influence of residual gas improves the accuracy of the crude oil water content of acquisition.
The first aspect of the present invention provides a kind of correcting device of crude oil water content, comprising: temperature sensor, pressure sensing
Device, density tester, detector for water content rate and processing equipment；
The temperature sensor, pressure sensor, density tester, detector for water content rate are logical with the processing equipment respectively
Letter connection；
The one end of crude oil pipeline close to crude oil import is arranged in the temperature sensor, pressure sensor；The moisture content
The crude oil pipeline is arranged in close to one end of crude exports in tester；The density tester is arranged in crude oil pipeline
Portion；
In each moment crude oil that the processing equipment is used to be acquired according to the temperature sensor temperature of residual gas with
And in the crude oil at each moment of the pressure sensor acquisition residual gas pressure, obtain the institute at each moment
State the density of residual gas in crude oil；
The processing equipment be used for the crude oil according to the pre-stored data oil test data, obtain the crude oil density,
The density of the original W/O；
The processing equipment is also used to the density of residual gas in the crude oil according to each moment, the crude oil
The hybrid density of the crude oil mixed liquor at each moment that density, the density of the former W/O, the density tester acquire
With pre-stored correction model, the test volume of the crude oil at each moment of detector for water content rate acquisition is contained
Water rate is modified processing, obtains the amendment volumetric water content of the crude oil at each moment.
Optionally, the crude oil pipeline is turning type pipeline, the temperature sensor, pressure sensor, density tester
It is respectively perpendicular the top for being threaded through the crude oil pipeline；The detector for water content rate the crude oil pipeline corner with it is described
Crude oil pipeline is arranged in parallel.
Optionally, the crude oil pipeline be linear type pipeline, the temperature sensor, pressure sensor, density tester,
Detector for water content rate is respectively perpendicular the top for being threaded through the crude oil pipeline.
Optionally, test probe, the density measurement of the test probe of the temperature sensor, the pressure sensor
The lower section of the liquid level of the crude oil is arranged in the test probe of instrument, the test probe of the detector for water content rate.
Optionally, test probe, the density measurement of the test probe of the temperature sensor, the pressure sensor
The setting direction of the test probe of instrument is vertical with the crude oil flow direction of the crude oil pipeline entrance；
The setting direction of the test probe of the detector for water content rate and the flowing side of crude oil pipeline exit crude oil
To vertical.
Optionally, test probe, the density measurement of the test probe of the temperature sensor, the pressure sensor
The test probe of instrument, the setting height of the test probe of the detector for water content rate are identical.
Optionally, the correcting device further include: modulus a/d transducer, it is the temperature sensor, pressure sensor, close
Degree tester, detector for water content rate are connect with the A/D converter respectively, and the A/D converter is connect with the processing equipment.
Optionally, the processing equipment is intelligence instrument, industrial personal computer or digital selective calling DSC terminal.
The second aspect of the present invention provides a kind of modification method of crude oil water content, comprising:
According to the temperature and pressure of residual gas in each moment crude oil, residual gas in the crude oil at each moment is obtained
The density of body；
According to the oil test data of the crude oil, the density of the crude oil, the density of the former W/O are obtained；
According to the density of residual gas, the density of the crude oil, the former W/O in the crude oil at each moment
Density, the crude oil mixed liquor at each moment hybrid density and pre-stored correction model, to the institute at each moment
The test volume moisture content for stating crude oil is modified processing, obtains the amendment volumetric water content of the crude oil at each moment.
Optionally, before the amendment volumetric water content of the crude oil for obtaining each moment, further includes: obtain institute
State correction model；
It is described to obtain the correction model, comprising:
According to the sum of residual gas described in the crude oil mixed liquor, the crude oil, the volume fraction of the former W/O
For definite value, the function of the volumetric water content of the former W/O is obtained；
Quality sum according to residual gas described in the crude oil mixed liquor, the crude oil, the former W/O is institute
The quality for stating crude oil mixed liquor obtains the density function of the residual gas；
According to the density function of the function of the volumetric water content of the former W/O and the residual gas, the original is obtained
The correction model of the volumetric water content of W/O.
The present invention provides the correcting device and method of a kind of crude oil water content, which includes: temperature sensor, pressure biography
Sensor, density tester, detector for water content rate and processing equipment；It is temperature sensor, pressure sensor, density tester, aqueous
Rate tester is communicated to connect with processing equipment respectively；Temperature sensor, pressure sensor setting crude oil pipeline close to crude oil into
One end of mouth；The one end of crude oil pipeline close to crude exports is arranged in detector for water content rate；Density tester is arranged in crude oil pipe
The middle part in road.The correcting device of crude oil water content provided by the invention, when obtaining the moisture content of crude oil, it is contemplated that residual gas
Influence, improve the accuracy of the crude oil water content of acquisition.
Detailed description of the invention
Fig. 1 is the connection schematic diagram of the correcting device of crude oil water content provided by the invention；
Fig. 2 is the structural schematic diagram one of the correcting device of crude oil water content provided by the invention；
Fig. 3 is the structural schematic diagram two of the correcting device of crude oil water content provided by the invention；
Fig. 4 is the structural schematic diagram three of the correcting device of crude oil water content provided by the invention；
Fig. 5 is the flow diagram one of the modification method of crude oil water content provided by the invention；
Fig. 6 is the flow diagram two of the modification method of crude oil water content provided by the invention；
Fig. 7 is the Application Example of the modification method of crude oil water content provided by the invention.
Description of symbols:
The correcting device of 10- crude oil water content；
11- temperature sensor；
12- pressure sensor；
13- density tester；
14- detector for water content rate；
15- processing equipment；
16- modulus a/d transducer；
20- crude oil pipeline.
Specific embodiment
To make the object, technical solutions and advantages of the present invention clearer, below in conjunction with the embodiment of the present invention, to this
Technical solution in inventive embodiments is clearly and completely described, it is clear that described embodiment is that a part of the invention is real
Example is applied, instead of all the embodiments.Based on the embodiments of the present invention, those of ordinary skill in the art are not making creation
Property labour under the premise of every other embodiment obtained, shall fall within the protection scope of the present invention.
Fig. 1 is the connection schematic diagram of the correcting device of crude oil water content provided by the invention, and Fig. 2 is original provided by the invention
The structural schematic diagram one of the correcting device of oily moisture content；As shown in Figs. 1-2, the amendment dress of crude oil water content provided in this embodiment
Setting 10 includes: temperature sensor 11, pressure sensor 12, density tester 13, detector for water content rate 14 and processing equipment 15.
The correcting device 10 of crude oil water content provided in this embodiment is arranged on crude oil pipeline 20, in the crude oil pipeline 20
Crude oil be crude oil after gas-liquid separator separates gas therein, still have residual gas in the processed crude oil,
And containing the moisture of certain content in the crude oil, the correcting device 10 of crude oil water content provided in this embodiment is to correct this
Moisture content in crude oil.
Wherein, temperature sensor 11, pressure sensor 12, density tester 13, detector for water content rate 14 respectively with processing
Equipment 15 communicates to connect, specifically, the communication connection mode can be wired connection or wireless connection, the present embodiment is to communication link
The concrete mode connect with no restrictions, as long as can be realized temperature sensor 11, pressure sensor 12, density tester 13, aqueous
The relevant parameter of collected crude oil is sent to processing equipment 15 by rate tester 14.
Specifically, temperature sensor 11 provided in this embodiment, pressure sensor 12, density tester 13, moisture content are surveyed
Trying instrument 14 is on-line testing equipment, can be by the way that temperature sensor 11 is arranged, pressure sensor 12, density tester 13, contains
Water rate tester 14 allows each element to acquire the relevant parameter of crude oil in real time or periodically and is sent to processing equipment
15。
Temperature sensor 11 is used to acquire the temperature of residual gas in each moment crude oil, and pressure sensor 12 is each for acquiring
The pressure of residual gas in the crude oil at moment, the residual gas pressure are absolute pressure, and density tester 13 is for when acquiring each
The hybrid density of the crude oil mixed liquor at quarter, i.e., oily, gas and water three hybrid density in crude oil；Detector for water content rate 14 is for adopting
Collect the test volume moisture content of the crude oil at each moment.
As shown in Fig. 2, crude oil pipeline 20 is arranged in close to the one of crude oil import in temperature sensor 11, pressure sensor 12
End；Temperature sensor 11, pressure sensor 12 in the present embodiment are respectively used to the temperature and pressure of residual gas in acquisition crude oil
Power, due to the temperature and pressure of the residual gas be for the density for obtaining residual gas, and by temperature sensor 11, pressure
The upstream of crude oil pipeline 20 is arranged in force snesor 12, and the crude oil flow velocity having just enter into crude oil pipeline 20 is very fast, crude oil mixed liquor
In oil, separation degree of the degree also compared to 20 other positions of crude oil pipeline of gas and water three separation it is big so that is obtained is residual
The density of residual air body is more accurate.
Crude oil pipeline 20 is arranged in close to one end of crude exports in detector for water content rate 14；Based on above-mentioned identical reason,
One end of the crude exports of crude oil pipeline 20 is arranged in detector for water content rate 14, so that the moisture content in the crude oil obtained is more quasi-
Really；The middle part of crude oil pipeline 20 is arranged in density tester 13, compared to the crude oil of crude oil import, exit with that oil-piping
The crude oil flow velocity of flow velocity, 20 middle part of crude oil pipeline is more slow, at this time the oil in crude oil mixed liquor, gas and water three's degree of mixing
It is higher, so that the hybrid density of the crude oil mixed liquor obtained is more accurate.
The original that temperature sensor 11, pressure sensor 12, density tester 13, detector for water content rate 14 acquire each moment
The temperature, pressure of residual gas and the hybrid density of crude oil mixed liquor and the test volume moisture content in crude oil are sent in oil
After processing equipment 15, the temperature of residual gas in each moment crude oil that processing equipment 15 is used to be acquired according to temperature sensor 11
And pressure sensor 12 acquire each moment crude oil in residual gas pressure, obtain residual gas in the crude oil at each moment
Density.
Specifically, the concrete mode for obtaining the density of residual gas can be according to " use according to the temperature and pressure of residual gas
Standard orifice flow meter measure gas discharge (GB/T 21446) " provide natural gas density calculation formula obtain, due to it
Derivation process is complicated, only enumerates to last formula in the present embodiment, as shown in following formula formula one；It specifically can refer to above-mentioned
" measuring gas discharge (GB/T 21446) with standard orifice flow meter ".
Wherein, ρgIndicate the density that gas is participated in crude oil, Kg/m3；MgIndicate the relative molecular mass of residual gas, Kg/
Kg-mol；PgIndicate the absolute pressure of residual gas, MPa；Z indicates the compressibility factor of the residual gas under actual condition；R is indicated
Universal gas constant, usually 0.00831448MPam3/Kg-molK；TgIndicate the thermodynamic temperature of residual gas, K.
Processing equipment 15 is used for the oil test data of crude oil according to the pre-stored data, obtains the density p of crude oilo, former W/O
Density pw；Wherein, it can obtain the relevant parameter of crude oil in the formation testing stage, according to the oil test data in the present embodiment, directly obtain
Take the density of crude oil and the density of former W/O.
Processing equipment 15 is also used to the density p of residual gas in the crude oil according to each momentg, the density of crude oil, in crude oil
The hybrid density and pre-stored correction model of the crude oil mixed liquor at each moment that the density of water, density tester 13 acquire,
Processing is modified to the test volume moisture content of the crude oil at each moment of the acquisition of detector for water content rate 14, obtains the original at each moment
The amendment volumetric water content of oil.
Correction model employed in the present embodiment can be as follows shown in formula two:
Wherein, ρoIndicate the density of crude oil；ρwIndicate the density of former W/O；ρsIndicate the hybrid density of crude oil mixed liquor；
ηwIndicate the test volume moisture content of crude oil；fwIndicate the amendment volumetric water content of crude oil.
Specifically, the principle of the correction model can be by as follows:
It include three kinds of oil, gas and water ingredients in crude oil mixed liquor, therefore the volume fraction of residual gas in crude oil, crude oil
The sum of volume fraction and the volume fraction of former W/O are definite value 1, specifically can be as follows shown in formula three:
ηw+ηo+ηg=1 formula three
Wherein, ηoIndicate the volume fraction of crude oil；ηgIndicate the volume fraction of residual gas in crude oil.
And the quality of crude oil mixed liquor is the quality of the quality of residual gas in crude oil, the quality of crude oil and former W/O
The sum of, it specifically can be as follows shown in formula four:
ρwηw+ρoηo+ρgηg=ρsFormula four
Wherein, ρsIndicate the hybrid density of crude oil mixed liquor.
And the amendment volumetric water content of crude oil can following five institute of formula known to the concept of the volumetric water content of former W/O
Show:
Wherein, the amendment volumetric water content of crude oil is the volume fraction and " crude oil mixed liquor Crude Oil and water of former W/O
The sum of volume fraction " ratio, and according to above-mentioned formula three by " the sum of crude oil mixed liquor Crude Oil and the volume fraction of water "
It is scaled the difference of the volume fraction of definite value 1 and residual gas.
In conjunction with formula four and formula five, by the volume fraction of residual gas in crude oil crude oil mixed liquor Crude Oil and water
Relevant parameter, which is indicated, can obtain shown in the following formula six of amendment volumetric water content of crude oil:
Formula the six channels obtains the correction model for finally obtaining the crude oil water content as shown in formula five after simplifying.
Density, the original of residual gas in the correction model according to the pre-stored data of processing equipment 15 and the crude oil at each moment
The density of oil, the density of former W/O, crude oil mixed liquor hybrid density, to the crude oil at each moment of detector for water content rate acquisition
Test volume moisture content be modified processing, the amendment volumetric water content of the crude oil at available each moment.
The correcting device of crude oil water content provided in this embodiment includes: temperature sensor, pressure sensor, density measurement
Instrument, detector for water content rate and processing equipment；Temperature sensor, pressure sensor, density tester, detector for water content rate respectively with
Processing equipment communication connection；The one end of crude oil pipeline close to crude oil import is arranged in temperature sensor, pressure sensor；Moisture content
The one end of crude oil pipeline close to crude exports is arranged in tester；The middle part of crude oil pipeline is arranged in density tester.The present invention
In the setting position of each component make the crude oil parameter in collection process more accurate so that the amendment volumetric water content obtained
Also more accurate；And the correcting device of crude oil water content provided in this embodiment, when obtaining the moisture content of crude oil, it is contemplated that residual
The influence of residual air body further improves the accuracy of the crude oil water content of acquisition.
It is carried out below with reference to usage scenario and structure of Fig. 3-Fig. 4 to the correcting device of the crude oil water content in the present embodiment
More detailed description, Fig. 3 are the structural schematic diagram two of the correcting device of crude oil water content provided by the invention, and Fig. 4 is this hair
The structural schematic diagram three of the correcting device of the crude oil water content of bright offer；As shown in Figure 3-4, crude oil water containing provided in this embodiment
The correcting device of rate can be applicable to but be not limited in the pipeline that crude oil pipeline is linear type or turning type, wherein the pipe of turning type
Road includes in the turning pipeline of arc line type and the turning pipeline of broken line type.
Scene one:
As shown in figure 3, crude oil pipeline 20 is turning type pipeline, temperature sensor 11, pressure sensor 12, density tester
13 are respectively perpendicular the top for being threaded through crude oil pipeline 20；Corner and crude oil pipeline of the detector for water content rate 14 in crude oil pipeline 20
20 are arranged in parallel.And the setting position of temperature sensor 11, pressure sensor 12, density tester 13, detector for water content rate 14
Identical as the setting position in above-described embodiment, the present embodiment is without limitation.
Specifically, detector for water content rate 14 also wears setting in the corner of crude oil pipeline 20, it is each on crude oil pipeline 20
Seal washer is provided at the position that component is worn, the size of seal washer is identical as the size of each parts probe, in order to enable
Each component can obtain the relevant parameter of more accurate crude oil.
In order to ensure the accuracy of each parameter in each component acquisition crude oil, the test probe of temperature sensor 11, pressure are passed
The test of the test probe, the test probe, detector for water content rate 14 of density tester 13 of sensor 12, which is popped one's head in, is arranged in crude oil
The lower section of liquid level.
The test of the test probe, the test probe, density tester 13 of pressure sensor 12 of temperature sensor 11 is popped one's head in
Setting direction it is vertical with the crude oil flow direction of 20 entrance of crude oil pipeline；And detector for water content rate 14 test probe set
It is vertical with the flow direction of 20 exit crude oil of crude oil pipeline to set direction.By the setting direction that each unit test is popped one's head in be set as with
Crude oil flow direction is vertical, so that each parameter in the crude oil of each unit test probe acquisition has higher accuracy, and
It ensure that convenience of the operator in maintenance.
Further for the applicability of each parameter for the crude oil for ensuring each component acquisition, the test of temperature sensor 11 is visited
Head, pressure sensor 12 test probe, density tester 13 test probe, detector for water content rate 14 test probe set
It is identical to set height.Each parameter i.e. in this implementation in the crude oil at each moment of each component acquisition is the parameter of sustained height liquid level.
Scene two:
As shown in figure 4, crude oil pipeline 20 is linear type pipeline, temperature sensor 11, pressure sensor 12, density tester
13, detector for water content rate 14 is respectively perpendicular the top for being threaded through crude oil pipeline 20.And temperature sensor 11, pressure sensor 12,
Density tester 13, the setting position of detector for water content rate 14 are identical as the setting position in above-described embodiment, the present embodiment pair
This is with no restrictions.
Specifically, the survey of the test probe, density tester 13 of the test probe of temperature sensor 11, pressure sensor 12
Probe header, the setting position of the test probe of detector for water content rate 14, direction and height are identical as in scene one, do not make herein
It repeats.
Further, the correcting device 10 of crude oil water content provided in this embodiment further include: modulus a/d transducer 16；
Wherein, temperature sensor 11, pressure sensor 12, density tester 13, detector for water content rate 14 connect with A/D converter 16 respectively
It connects, A/D converter 16 is connect with processing equipment 15.
In the crude oil acquired due to temperature sensor 11, pressure sensor 12, density tester 13, detector for water content rate 14
Temperature, the hybrid density of pressure and crude oil mixed liquor and the test volume moisture content in crude oil of residual gas be mould
Quasi- data, the analogue data are converted into numerical data via A/D converter 16, carry out processing amendment by processing equipment 15.
Optionally, density tester 13 provided in this embodiment is online densimeter or brother's formula mass flowmenter；Moisture content
Tester 14 is shortwave formula crude oil water containing instrument；Processing equipment 15 is that intelligence instrument, industrial personal computer or digital selective calling DSC are whole
End, wherein processing equipment 15 is preferably industrial personal computer.Each member in the correcting device 10 of crude oil water content provided in this embodiment
Part, the middle water-containing machine (such as gamma-rays formula crude oil water containing instrument and x-ray formula crude oil water containing instrument) used, has compared to the prior art
The higher feature of environmental protection.
Test probe, the pressure sensor of temperature sensor in the correcting device of crude oil water content provided in this embodiment
The lower section of test probe, the test probe of density tester, detector for water content rate tested probe and the liquid level of crude oil is set；And
The test probe of temperature sensor, the test probe of pressure sensor, the setting direction of test probe of density tester and former
The crude oil flow direction of oil-piping entrance is vertical；The setting direction and crude oil pipeline of the test probe of detector for water content rate export
The flow direction for locating crude oil is vertical；And the setting height of test probe is identical, improves the collection accuracy of each parameter in crude oil,
And when obtaining the moisture content of crude oil, it is contemplated that the influence of residual gas improves the accuracy of the crude oil water content of acquisition.
It is illustrated below with reference to modification method of the Fig. 5 to crude oil water content provided in this embodiment, Fig. 5 mentions for the present invention
The flow diagram one of the modification method of the crude oil water content of confession, the executing subject of method shown in Fig. 5 are repairing for crude oil water content
Processing equipment in equipment, the modification method of crude oil water content provided in this embodiment include:
S501 obtains residual gas in the crude oil at each moment according to the temperature and pressure of residual gas in each moment crude oil
Density.
The temperature and pressure sensor of residual gas in each moment crude oil that processing equipment is acquired according to temperature sensor
The pressure of residual gas, obtains the density of residual gas in the crude oil at each moment in the crude oil at each moment of acquisition；Wherein, remaining
The acquisition modes of the density of gas are same with the above-mentioned embodiment, and therefore not to repeat here.
S502, the oil test data of based on crude obtain the density of crude oil, the density of former W/O.
It can be previously stored with the oil test data of crude oil in processing equipment, according to the oil test data, directly acquire the close of crude oil
The density of degree and former W/O.
S503, according to the density of residual gas in the crude oil at each moment, the density of crude oil, the density of former W/O, it is each when
The hybrid density of the crude oil mixed liquor at quarter and pre-stored correction model, to the test volume moisture content of the crude oil at each moment into
Row correcting process obtains the amendment volumetric water content of the crude oil at each moment.
Specifically, the acquisition modes of correction model and obtain each moment crude oil amendment volumetric water content mode with
Acquisition modes in above-described embodiment are identical, and this will not be repeated here.
In the present embodiment, when obtaining the volumetric water content of crude oil, it is contemplated that the influence of the residual gas in crude oil improves
The accuracy of the crude oil water content obtained.
It is illustrated below with reference to modification method of the Fig. 6 to crude oil water content provided in this embodiment, Fig. 6 mentions for the present invention
The flow diagram two of the modification method of the crude oil water content of confession, the modification method packet of crude oil water content provided in this embodiment
It includes:
S601 obtains correction model.
Specifically, obtain correction model specific steps may include: residual gas in based on crude mixed liquor, crude oil,
The sum of volume fraction of former W/O is definite value, obtains the function of the volumetric water content of former W/O；I.e. according to above-described embodiment
In formula three, formula five obtain former W/O volumetric water content function.
Residual gas in based on crude mixed liquor, crude oil, former W/O quality sum be the quality of crude oil mixed liquor, obtain
Take the density function of residual gas；The density function of residual gas is obtained according to the formula four in above-described embodiment.
The density function of the function of the volumetric water content of water and residual gas in based on crude obtains the volume of former W/O
The correction model of moisture content obtains the volumetric water content of former W/O according to formula four, the formula five in above-described embodiment
Correction model.
Obtaining correction model specifically can refer to the associated description in above-described embodiment, and therefore not to repeat here.
S602 obtains residual gas in the crude oil at each moment according to the temperature and pressure of residual gas in each moment crude oil
Density.
S603, the oil test data of based on crude obtain the density of crude oil, the density of former W/O.
S604, according to the density of residual gas in the crude oil at each moment, the density of crude oil, the density of former W/O, it is each when
The hybrid density of the crude oil mixed liquor at quarter and pre-stored correction model, to the test volume moisture content of the crude oil at each moment into
Row correcting process obtains the amendment volumetric water content of the crude oil at each moment.
Wherein, S602-S604 specifically can refer to the associated description in above-described embodiment S501-S503, and this will not be repeated here.
It is applied below with reference to correcting device and method of the Fig. 7 to crude oil water content provided in this embodiment, Fig. 7 is
The correcting device of crude oil water content provided by the invention and the Application Example of method.
Specific application process are as follows: the kerosene of 9 different volumes moisture content of test configurations and the mixed liquor of water, and lead to respectively
Enter in crude oil pipeline；Wherein, in the mixed liquor volumetric water content be respectively 10%, 20%, 30%, 40%, 50%, 60%,
70%, 80% and 90%.
In the entrance of the crude oil pipeline of each volumetric water content, then the nitrogen of different volumes void fraction is mixed respectively,
Wherein, the gas volume fraction of nitrogen is respectively 0%, 5%, 10%, 15%, 20%, 25%, 30%, 35%, 40% and 45%；
10 kinds of different nitrogen are passed through in the mixed liquor sample of i.e. each volumetric water content.90 different bodies are obtained in the application in total
The sample result of product void fraction.
Specifically, temperature sensor acquires the temperature for acquiring nitrogen in each moment mixed liquor, pressure sensor is used for
The pressure of nitrogen in each moment mixed liquor is acquired, processing equipment is used for the temperature and pressure according to nitrogen, obtains the mixed of each moment
Close the density of nitrogen in liquid；And be previously stored in processing equipment this using kerosene, water density and provided in this embodiment repair
Positive model.
Processing equipment be also used to the density according to nitrogen, the density of kerosene, the density of water, density tester acquisition it is each when
The hybrid density and correction model of the crude oil mixed liquor at quarter contain the volume of the mixed liquor at each moment of detector for water content rate acquisition
Water rate (i.e. 10%, 20%, 30%, 40%, 50%, 60%, 70%, 80% and 90%) is modified processing, after obtaining amendment
The crude oil volumetric water content of oil gas water mixed liquid.
Specifically, revised volumetric water content as shown in fig. 7, abscissa be experimental configuration crude oil volumetric water content,
Ordinate is the crude oil volumetric water content of the revised oil gas water mixed liquid under different volumes void fraction.
It can be obtained through analysis, using the correcting device and method of crude oil water content provided in this embodiment, when containing in mixed liquor
When gas rate is less than 15%, the revised volumetric water content of mixed liquor and original volume moisture content deviation are all fallen in 3% error line；
When void fraction is less than 25%, the revised volumetric water content of mixed liquor and original volume moisture content deviation all fall within 5% error
In line；When void fraction is in the range of 25% to 45%, the revised volumetric water content of mixed liquor and original volume moisture content are inclined
Difference is fully fallen in 8% error line.
To sum up, using the correcting device and method of crude oil water content provided in this embodiment, the volume of the mixed liquor of acquisition
Moisture content has smaller error and higher accuracy.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of correcting device of crude oil water content characterized by comprising temperature sensor, pressure sensor, density measurement
Instrument, detector for water content rate and processing equipment；
The temperature sensor, pressure sensor, density tester, detector for water content rate respectively with the processing equipment communication link
It connects；
The one end of crude oil pipeline close to crude oil import is arranged in the temperature sensor, pressure sensor；The water cut test
The crude oil pipeline is arranged in close to one end of crude exports in instrument；The middle part of crude oil pipeline is arranged in the density tester；
The temperature of residual gas and institute in each moment crude oil that the processing equipment is used to be acquired according to the temperature sensor
The pressure for stating residual gas in the crude oil at each moment of pressure sensor acquisition, obtains the original at each moment
The density of residual gas in oil；
The processing equipment is used for the oil test data of the crude oil according to the pre-stored data, obtains the density, described of the crude oil
The density of former W/O；
The processing equipment be also used to the density of residual gas in the crude oil according to each moment, the crude oil it is close
Degree, the density of the former W/O, density tester acquisition each moment crude oil mixed liquor hybrid density and
Pre-stored correction model, it is aqueous to the test volume of the crude oil at each moment of detector for water content rate acquisition
Rate is modified processing, obtains the amendment volumetric water content of the crude oil at each moment.
2. correcting device according to claim 1, which is characterized in that the crude oil pipeline is turning type pipeline, the temperature
Degree sensor, pressure sensor, density tester are respectively perpendicular the top for being threaded through the crude oil pipeline；The water cut test
Instrument is arranged in parallel in the corner of the crude oil pipeline with the crude oil pipeline.
3. correcting device according to claim 1, which is characterized in that the crude oil pipeline is linear type pipeline, the temperature
Degree sensor, pressure sensor, density tester, detector for water content rate are respectively perpendicular the top for being threaded through the crude oil pipeline.
4. correcting device according to claim 2 or 3, which is characterized in that the test of the temperature sensor pops one's head in, is described
The test probe setting of the test probe of pressure sensor, the test probe of the density tester, the detector for water content rate
In the lower section of the liquid level of the crude oil.
5. correcting device according to claim 4, which is characterized in that the test probe of the temperature sensor, the pressure
Test probe, the setting direction of the test probe of the density tester and the original of the crude oil pipeline entrance of force snesor
Oily flow direction is vertical；
The setting direction of test probe of the detector for water content rate and the flow direction of crude oil pipeline exit crude oil are hung down
Directly.
6. correcting device according to claim 5, which is characterized in that the test probe of the temperature sensor, the pressure
The setting for testing probe of the test probe, the test probe, the detector for water content rate of the density tester of force snesor
It is highly identical.
7. correcting device according to claim 1, which is characterized in that the correcting device further include: modulus A/D conversion
Device, the temperature sensor, pressure sensor, density tester, detector for water content rate are connect with the A/D converter respectively,
The A/D converter is connect with the processing equipment.
8. correcting device according to claim 1, which is characterized in that the processing equipment be intelligence instrument, industrial personal computer or
Digital selective calling DSC terminal.
9. a kind of modification method of crude oil water content characterized by comprising
According to the temperature and pressure of residual gas in each moment crude oil, residual gas in the crude oil at each moment is obtained
Density；
According to the oil test data of the crude oil, the density of the crude oil, the density of the former W/O are obtained；
According to the density of residual gas in the crude oil at each moment, the density of the crude oil, the former W/O it is close
The hybrid density and pre-stored correction model of degree, the crude oil mixed liquor at each moment, to the original at each moment
The test volume moisture content of oil is modified processing, obtains the amendment volumetric water content of the crude oil at each moment.
10. modification method according to claim 9, which is characterized in that the crude oil for obtaining each moment
Before amendment volumetric water content, further includes: obtain the correction model；
It is described to obtain the correction model, comprising:
It is fixed according to the sum of residual gas described in the crude oil mixed liquor, the crude oil, the volume fraction of the former W/O
Value obtains the function of the volumetric water content of the former W/O；
Quality sum according to residual gas described in the crude oil mixed liquor, the crude oil, the former W/O is the original
The quality of oily mixed liquor obtains the density function of the residual gas；
According to the density function of the function of the volumetric water content of the former W/O and the residual gas, obtain in the crude oil
The correction model of the volumetric water content of water.
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| CN111024771A (en) * | 2019-11-26 | 2020-04-17 | 中国石油天然气股份有限公司 | Method for measuring water content of oil-water mixed liquid in oil well |
| CN112394163A (en) * | 2020-12-14 | 2021-02-23 | 昆仑数智科技有限责任公司 | Crude oil water content analysis method and device |
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| CN114138033A (en) * | 2021-11-25 | 2022-03-04 | 西安石油大学 | Constant temperature control method and device for quick-opening ball collecting barrel |
| CN116699111A (en) * | 2023-08-07 | 2023-09-05 | 陕西中易泰能源科技有限公司 | Crude oil water content measurement system, device and method |
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