CN110361338A - A kind of evaluation method of oil field water silicate scale preventative - Google Patents
A kind of evaluation method of oil field water silicate scale preventative Download PDFInfo
- Publication number
- CN110361338A CN110361338A CN201810249963.3A CN201810249963A CN110361338A CN 110361338 A CN110361338 A CN 110361338A CN 201810249963 A CN201810249963 A CN 201810249963A CN 110361338 A CN110361338 A CN 110361338A
- Authority
- CN
- China
- Prior art keywords
- solution
- filtrate
- concentration
- blank
- dosing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/31—Investigating relative effect of material at wavelengths characteristic of specific elements or molecules, e.g. atomic absorption spectrometry
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/75—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated
- G01N21/77—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator
- G01N21/82—Systems in which material is subjected to a chemical reaction, the progress or the result of the reaction being investigated by observing the effect on a chemical indicator producing a precipitate or turbidity
Abstract
The present invention provides a kind of evaluation methods of silicate scale preventative, it is mixed using two kinds of salt water, wherein Ca, Mg incrustation ion in the first solution analog oil field aqueous solution, second solution analog silicate ion, after scaling cations and anion form dirt precipitating, incrustation ion concentration is remarkably decreased in water；And having the mixed salt of scale preventative, precipitating then is difficult to be formed, because the presence of scale preventative is suppressed the reduction of incrustation ion original concentration.The present invention can make assessment of performance and screening to scale preventative by measurement incrustation ion concentration variation.
Description
Technical field
The present invention relates to oilfield technology field more particularly to a kind of evaluation methods of oil field water silicate scale preventative.
Background technique
Silicate scale is that maximum dirty type is endangered in domestic oilfield process at present.Although reporting the text of silicon dirt inhibitor
It offers very much, but the method that silicon dirt is evaluated in document is different, hardness, basicity including water sample, pH, SiO2When content and test
Between and temperature it is different, therefore be not easy to determine which kind of medicament is more preferable.Static resistance SiO is mostly used in existing literature greatly2Test method
Pharmacy effect is evaluated, this method is to prepare certain density sodium silicate solution, and a certain amount of scale preventative is added, molten with hydrochloric acid and NaOH
Liquid adjusts pH value of solution to 7.0 ± 0.1, is placed in constant temperature at 45 DEG C of water-bath, timing sampling.Pass through colorimetric method for determining solubility SiO2Contain
Amount.This method has the disadvantage in that 1. evaluation repdocutbility is poor in use.In above-mentioned adjusting pH value of solution operating process,
Sodium silicate solution is not a stable system, and existence form of the silicon in system can change, and therefore, it is difficult to anti-to certain
Dirty agent evaluation procedure is reappeared.2. representative poor.This method can only test agents resistance SiO2Ability, and oil field water ion at
Divide complexity, the polyvalent cation and silicate contained forms insoluble silicate scale, and this insoluble silicate is exactly oil
The main component of field silicon dirt.
In the prior art, CN105808904A discloses a kind of physical oil production instrument antiscale applied to oil field produced water process
Effect evaluation method, this method comprises: step 1, by physical oil production instrument, treated that water sample heats, and observes water after the heating
Middle precipitation precipitated form；Step 2, the surface tension of physics dirt instrument water sample before and after the processing is measured, obtains surface tension drop
Low value；Step 3, useful effect of the physical oil production instrument to handled liquid is determined using surface tension method of testing or ion method of testing
The time kept, i.e. validity retention time；And step 4, according to physical oil production instrument treated water after standing, in water
Ca2+Or Ba2+Or Sr2+Ion concentration, which changes, determines antiscaling rate.The physical oil production instrument antiscale for being applied to oil field produced water process is imitated
Fruit evaluation method strong operability, high reliablity, evaluation is high-efficient, can be applied to the effect of the physical oil production instrument in oil field extracted water
Fruit evaluation.However, it still has above-mentioned defect, using effect is unsatisfactory.
Therefore, the drawbacks of prior art is badly in need of for silicate Inhibitor Evaluation at this stage is established a kind of new for silicon
The method of evaluating performance of hydrochlorate scale preventative.
Summary of the invention
The invention solves evaluation repdocutbilities existing for the evaluation method of silicate scale preventative in the prior art poor, generation
The problem of table difference, and then a kind of evaluation method of reproducible, high reliablity silicate scale preventative is provided.
The present invention solves the technical solution that above-mentioned technical problem uses are as follows:
A kind of evaluation method of oil field water silicate scale preventative, comprising the following steps: (1) the first solution is configured, it is described
The concentration of NaCl is 8-12g/L, CaCl in first solution2Concentration be 3-6g/L, MgCl2·2H2The concentration of O is 2-5g/L；Match
The second solution is set, the concentration of NaCl is identical as the first solution in second solution, Na2SiO3·9H2The concentration of O is 9-12g/
L；(2) a certain amount of second solution is taken, distilled water constant volume is added, obtains contrast solution；(3) it the preparation of blank solution: takes
With second solution of isodose in step (2), and first solution is added, obtains blank solution；The system of dosing solution
It is standby: to take second solution with isodose in step (2), scale preventative is added, adds first solution, it is molten to obtain dosing
Liquid；When preparing the blank solution and the dosing solution, distilled water adds in the additional amount of first solution and step (2)
It is identical to enter amount；(5) blank solution filtrate and dosing solution are obtained using blank solution and dosing solution described in membrane filtration respectively
Filtrate；(6) a certain amount of contrast solution, blank solution filtrate and dosing solution filtrate are taken respectively, and hydrochloric acid solution and molybdic acid is added
Ammonium salt solution stands 8-15 minutes after mixing, adds sulfuric acid solution and ascorbic acid solution, after mixing constant volume, stands 20-
30min；Absorbance is measured at 400-900nm, according to absorbance-SiO2Standard curve calculates separately the contrast solution, institute
State SiO in blank solution filtrate and the dosing solution filtrate2Concentration, according to the concentration calculation antiscaling rate.
In step (5), first the blank solution and dosing solution are placed under constant temperature and place 12-48h, thermostat temperature
For the arbitrary value in 30~70 DEG C, the blank solution and dosing solution are taken out after constant temperature, are placed to room temperature；Again respectively using filter
Film filters the blank solution and dosing solution.
The thermostat temperature is 44-46 DEG C, and constant temperature lower standing time is for 24 hours.
In step (6), the contrast solution, blank solution filtrate and dosing solution filtrate are diluted, take one respectively
Hydrochloric acid solution is added in Xiang Suoshu dilution in the dilution of quantitative contrast solution, blank solution filtrate and dosing solution filtrate
And ammonium molybdate solution；The contrast solution, the blank solution filtrate and the dosing solution filtrate dilute same multiple respectively,
The multiple is 2-10 times.
The mass concentration of the hydrochloric acid solution is 20%, and the mass concentration of the ammonium molybdate solution is 10%；The hydrochloric acid
The volume of any one in the dilution of the additional amount of solution and the contrast solution, blank solution filtrate and dosing solution filtrate
Than for 1:1；The dilution of the additional amount of the ammonium molybdate solution and the contrast solution, blank solution filtrate and dosing solution filtrate
The volume ratio of any one in liquid is 1.5:1.
The mass concentration of the sulfuric acid solution is 60-65%, and the mass concentration of the ascorbic acid solution is 2%；It is described
Any one in the dilution of the additional amount of sulfuric acid solution and the contrast solution, blank solution filtrate and dosing solution filtrate
Volume ratio is 1:1；The additional amount of the ascorbic acid solution and the contrast solution, blank solution filtrate and dosing solution filtrate
Dilution in any one volume ratio be 1:1.
In step (6), absorbance is measured at 810nm.
The impedance agent is acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer.
The concentration of NaCl is 10g/L, CaCl in first solution2Concentration be 4.44g/L, MgCl2·2H2The concentration of O
For 3.38g/L；Configure the second solution, Na in second solution2SiO3·9H2The concentration of O is 10.667g/L.
When preparing the contrast solution in step (2), the volume ratio of the distilled water of second solution and addition is 5:95.
The evaluation method of silicate scale preventative of the present invention is mixed using two kinds of salt water, scaling cations and yin from
After son forms dirt precipitating, incrustation ion concentration is remarkably decreased in water；Mixed salt containing scale preventative, precipitating then are difficult to be formed,
Because the presence of scale preventative is suppressed the reduction for simulating water incrustation ion original concentration；Therefore, by measuring incrustation ion
Concentration variation, calculates antiscaling rate, can make assessment of performance and screening to scale preventative.
It is molten to limit the contrast solution, dosing solution and blank for the evaluation method of silicate scale preventative of the present invention
The second solution and distilled water/first solution volume ratio are (90-95) in liquid: 5, with the addition of this ratio, the dosing of configuration is molten
Liquid will not generate floccule precipitating immediately, more stable, to be conducive to improve the precision of experiment.
Under conditions of a large amount of ions coexist, how to realize that the stabilization of aqueous solution is the problem that the prior art faces.This hair
In bright, first solution and the second solution simulate the ion concentration in the water of oil field, the concentration of NaCl in first solution
For 9-11g/L, CaCl2Concentration be 4-5g/L, MgCl2·2H2The concentration of O is 3-4g/L；NaCl's is dense in second solution
Spend, Na identical as the first solution2SiO3·9H2The concentration of O is 10-11g/L；Wherein CaCl2And MgCl2·2H2The addition of O can mould
It can quickly react after Ca, Mg incrustation ion in quasi- oil field aqueous solution, incrustation ion and silicate ion mixing, thus difficult
To control the precision of experiment.For this purpose, the present invention limits the concentration of the first solution and the NaCl in the second solution as 9-11g/L, it can
So that the total salinity of dosing solution and blank solution that the first solution and the second solution are mixed to get is in 13000mg/L or so,
The present inventor has found after long-term further investigation, and under this salinity, the water quality for simulating water is relatively stable, will not
At once quickly occur to react at dirt, scale preventative is added to set apart, so that experimental result is more accurate.
In the present invention, 44-46 DEG C is selected as system reaction temperature, this temperature meets scene temperature and operates with what is tested
Property.The present invention places for 24 hours under constant temperature conditions, and the silica concentration later in system is essentially steady state for 24 hours.
The present invention is developed the color using silicon molybdenum blue method, calculates the silica concentration in solution, silicon by measurement absorbance
Process that molybdenum blue method develops the color the following steps are included:
(1) single silicic acid and ammonium molybdate generate the silicomolybdic acid complex compound of yellow in acid condition:
H2SiO3+12MoO4 2-+24H+→H8[Si(Mo2O7)6Molybdenum yellow (yellow)+9H2O
(2) molybdenum yellow complex compound is reduced to the silicon molybdenum blue complex compound of blue with reducing agent:
H8[Si(Mo2O7)6]→H8[SiMo2O5(Mo2O7)5]
In order to which the technical solution of the evaluation method of silicate scale preventative of the present invention is more clearly understood, tie below
It closes specific embodiment and the technical solution in the present invention is further described in attached drawing.
Detailed description of the invention
It is the standard curve of absorbance A Yu silica quality concentration as shown in Figure 1.
Specific embodiment
Hereinafter, certain exemplary embodiments are simply just described.As one skilled in the art will recognize that
Like that, without departing from the spirit or scope of the present invention, described embodiment can be modified by various different modes.
Therefore, attached drawing and description are considered essentially illustrative rather than restrictive.
It should be mentioned that some exemplary embodiments are described as before exemplary embodiment is discussed in greater detail
The processing or method described as flow chart.Although operations are described as the processing of sequence by flow chart, therein to be permitted
Multioperation can be implemented concurrently, concomitantly or simultaneously.In addition, the sequence of operations can be rearranged.When it
The processing can be terminated when operation completion, it is also possible to have the additional step being not included in attached drawing.The processing
It can correspond to method, function, regulation, subroutine, subprogram etc..
Absorbance-SiO2The drafting of standard curve
0mL, 1.0mL, 2.0mL, 3.0mL, 4.0mL, 5.0mL silicon standard specimen is pipetted with pipette to be placed in 50mL colorimetric cylinder,
The content of silica is 10 μ g/mL in the silicon standard specimen, and soluble silica quality is respectively in the solution being configured to
0.000mg,0.010mg,0.020mg,0.030mg,0.040mg,0.050mg；25mL is diluted with water into solution, respectively according to
The ammonium molybdate solution that the secondary 1+1 hydrochloric acid solution that 1mL is added and mass concentration are 10%, 1+1 hydrochloric acid solution, that is, concentrated hydrochloric acid and pure water
Volume ratio be 1:1, the mass concentration of the 1+1 hydrochloric acid solution is 20%；1+1 hydrochloric acid solution is added and mass concentration is 10%
Ammonium molybdate solution after, stand 10min.Then the mass concentration of the 1+1 sulfuric acid solution and 1.5Ml that sequentially add 1mL is 2%
Ascorbic acid solution adds distilled water to graduation mark, shakes up and stands 25min, the volume of the 1+1 sulfuric acid solution, that is, concentrated sulfuric acid pure water
Than being 63% for the mass concentration of 1:1, the 1+1 sulfuric acid solution.Existed with length, width and height 1cm × 1cm × 5cm quartz colorimetric utensil
Under 810nm, using blank as reference, absorbance A is measured.
Silicone content and corresponding absorbance are drawn into standard curve, standard curve needed origin, and coefficient R is not less than
0.999.The standard curve of absorbance A and silica quality concentration is as shown in Figure 1 in present embodiment.
Silicate Inhibitor Evaluation embodiment
Embodiment 1
A kind of evaluation method of oil field water silicate scale preventative used in the present embodiment, comprising the following steps:
(1) the first solution is configured, the concentration of NaCl is 10g/L, CaCl in first solution2Concentration be 4.44g/L,
MgCl2·2H2The concentration of O is 3.38g/L；The second solution is configured, the concentration of NaCl and the first solution phase in second solution
Together, Na in second solution2SiO3·9H2The concentration of O is 10.667g/L.
(2) the second solution described in 5mL is taken, 95mL distilled water constant volume is added, obtains contrast solution；
(3) preparation of blank solution: taking the second solution described in 5mL, and the first solution described in 95mL is added, it is molten to obtain blank
Liquid；
The preparation of dosing solution: taking the second solution described in 5mL, and 1mL scale preventative is added, and it is molten to add described in 95mL first
Liquid obtains dosing solution；
(5) blank solution and dosing solution are placed under constant temperature and are placed for 24 hours, thermostat temperature is 45 DEG C, constant temperature
After take out the blank solution and dosing solution, place to room temperature；Blank described in the membrane filtration using 0.45 μm is molten respectively again
Liquid and dosing solution.
(6) by the blank solution filtrate, the dosing solution filtrate and the contrast solution, 5 times are diluted respectively, is taken
Blank solution filtrate described in 1ml, the dosing solution filtrate, the contrast solution dilution, be respectively placed in 25ml colorimetric cylinder
In, it is separately added into the hydrochloric acid solution and 1.5ml ammonium molybdate solution of 1ml, is uniformly mixed, 10min is stood, the hydrochloric acid solution is 1+
1 hydrochloric acid solution, the mass concentration of the hydrochloric acid solution are 20%；Then be separately added into again thereto 1ml 1+1 sulfuric acid solution and
The ascorbic acid solution that the mass concentration of 1ml is 2% is uniformly mixed constant volume, stands 25min, measures the extinction at 810nm
Degree, the mass concentration of the 1+1 sulfuric acid solution are 63%.When measuring absorbance, same sample is 3 times parallel, is averaged work
For measurement result.
According to absorbance-SiO2Standard curve calculates the SiO in the blank solution filtrate2Concentration C1, the dosing solution
SiO in filtrate2Concentration C2, SiO in the contrast solution2Concentration C0；
The antiscaling rate of the scale preventative is calculated according to the following formula:
E=(C2-C1/(C0-C1) × 100%.
Embodiment 2
A kind of evaluation method of oil field water silicate scale preventative used in the present embodiment, comprising the following steps:
(1) the first solution is configured, the concentration of NaCl is 8g/L, CaCl in first solution2Concentration be 3g/L,
MgCl2·2H2The concentration of O is 2g/L；The second solution is configured, the concentration of NaCl is identical as the first solution in second solution, institute
State Na in the second solution2SiO3·9H2The concentration of O is 9g/L.
(2) the second solution described in 5mL is taken, 95mL distilled water constant volume is added, obtains contrast solution；
(3) preparation of blank solution: taking the second solution described in 5mL, and the first solution described in 95mL is added, it is molten to obtain blank
Liquid；
The preparation of dosing solution: taking the second solution described in 5mL, and 1mL scale preventative is added, and it is molten to add described in 95mL first
Liquid obtains dosing solution；
(5) blank solution and dosing solution are placed under constant temperature and place 12h, thermostat temperature is 70 DEG C, constant temperature
After take out the blank solution and dosing solution, place to room temperature；Blank described in the membrane filtration using 0.45 μm is molten respectively again
Liquid and dosing solution.
(6) by the blank solution filtrate, the dosing solution filtrate and the contrast solution, 5 times are diluted respectively, is taken
Blank solution filtrate described in 1ml, the dosing solution filtrate, the contrast solution dilution, be respectively placed in 25ml colorimetric cylinder
In, it is separately added into the hydrochloric acid solution and 1.5ml ammonium molybdate solution of 1ml, is uniformly mixed, 10min is stood, the hydrochloric acid solution is 1+
1 hydrochloric acid solution, the mass concentration of the hydrochloric acid solution are 20%；Then be separately added into again thereto 1ml 1+1 sulfuric acid solution and
The ascorbic acid solution that the mass concentration of 1ml is 2% is uniformly mixed constant volume, stands 25min, measures the extinction at 810nm
Degree, the mass concentration of the 1+1 sulfuric acid solution are 63%.When measuring absorbance, same sample is 3 times parallel, is averaged work
For measurement result.
According to absorbance-SiO2Standard curve calculates the SiO in the blank solution filtrate2Concentration C1, the dosing solution
SiO in filtrate2Concentration C2, SiO in the contrast solution2Concentration C0；
The antiscaling rate of the scale preventative is calculated according to the following formula:
E=(C2-C1/(C0-C1) × 100%.
Embodiment 3
A kind of evaluation method of oil field water silicate scale preventative used in the present embodiment, comprising the following steps:
(1) the first solution is configured, the concentration of NaCl is 12g/L, CaCl in first solution2Concentration be 6g/L,
MgCl2·2H2The concentration of O is 5g/L；The second solution is configured, the concentration of NaCl is identical as the first solution in second solution, institute
State Na in the second solution2SiO3·9H2The concentration of O is 12g/L.
(2) the second solution described in 5mL is taken, 95mL distilled water constant volume is added, obtains contrast solution；
(3) preparation of blank solution: taking the second solution described in 5mL, and the first solution described in 95mL is added, it is molten to obtain blank
Liquid；
The preparation of dosing solution: taking the second solution described in 5mL, and 1mL scale preventative is added, and it is molten to add described in 95mL first
Liquid obtains dosing solution；
(5) blank solution and dosing solution are placed under constant temperature and place 48h, thermostat temperature is 30 DEG C, constant temperature
After take out the blank solution and dosing solution, place to room temperature；Blank described in the membrane filtration using 0.45 μm is molten respectively again
Liquid and dosing solution.
(6) by the blank solution filtrate, the dosing solution filtrate and the contrast solution, 5 times are diluted respectively, is taken
Blank solution filtrate described in 1ml, the dosing solution filtrate, the contrast solution dilution, be respectively placed in 25ml colorimetric cylinder
In, it is separately added into the hydrochloric acid solution and 1.5ml ammonium molybdate solution of 1ml, is uniformly mixed, 10min is stood, the hydrochloric acid solution is 1+
1 hydrochloric acid solution, the mass concentration of the hydrochloric acid solution are 20%；Then be separately added into again thereto 1ml 1+1 sulfuric acid solution and
The ascorbic acid solution that the mass concentration of 1ml is 2% is uniformly mixed constant volume, stands 25min, measures the extinction at 810nm
Degree, the mass concentration of the 1+1 sulfuric acid solution are 63%.When measuring absorbance, same sample is 3 times parallel, is averaged work
For measurement result.
According to absorbance-SiO2Standard curve calculates the SiO in the blank solution filtrate2Concentration C1, the dosing solution
SiO in filtrate2Concentration C2, SiO in the contrast solution2Concentration C0；
The antiscaling rate of the scale preventative is calculated according to the following formula:
E=(C2-C1/(C0-C1) × 100%.
Repeatable control experiment
Experimental example 1
The antiscale of scale preventative is calculated using the evaluation method of the water silicate scale preventative of oil field described in embodiment 1-3
Rate, scale preventative described in this experimental example are acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer, and molecular formula is
C10H17NO6S.In triplicate by every kind in embodiment 1-3 of evaluation method, the repeatability of measurement result, as a result such as following table institute
Show:
Experimental example 2
The antiscale of scale preventative is calculated using the evaluation method of the water silicate scale preventative of oil field described in embodiment 1-3
Rate, scale preventative described in this experimental example is the commercially available scale preventative of Nanjing Miller Chemical Co., Ltd., by every kind in embodiment 1-3
Evaluation method in triplicate, the repeatability of measurement result, as a result as shown in the table:
By above-mentioned experimental result it is found that the evaluation method of oil field of the present invention water silicate scale preventative has well
Repeatability, relative average error can reach 3% hereinafter, highly reliable.It is calculated using evaluation method of the present invention
The antiscaling rate of the scale preventative out, can be to the performance of scale preventative as evaluation.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be based on the protection scope of the described claims.
Claims (10)
1. a kind of oil field evaluation method of water silicate scale preventative, which comprises the following steps:
(1) the first solution is configured, the concentration of NaCl is 8-12g/L, CaCl in first solution2Concentration be 3-6g/L,
MgCl2·2H2The concentration of O is 2-5g/L；The second solution is configured, the concentration of NaCl is identical as the first solution in second solution,
Na2SiO3·9H2The concentration of O is 9-12g/L；
(2) a certain amount of second solution is taken, distilled water constant volume is added, obtains contrast solution；
(3) preparation of blank solution: second solution with isodose in step (2) is taken, and first solution is added, is obtained
To blank solution；
The preparation of dosing solution: taking second solution with isodose in step (2), and scale preventative is added, and adds described the
One solution obtains dosing solution；
When preparing the blank solution and the dosing solution, distilled water in the additional amount of first solution and step (2)
Additional amount is identical；
(5) blank solution filtrate and dosing solution filtrate are obtained using blank solution and dosing solution described in membrane filtration respectively；
(6) a certain amount of contrast solution, blank solution filtrate and dosing solution filtrate are taken respectively, and hydrochloric acid solution and ammonium molybdate is added
Solution stands 8-15 minutes after mixing, adds sulfuric acid solution and ascorbic acid solution, after mixing constant volume, stands 20-
30min；Absorbance is measured at 400-900nm, according to absorbance-SiO2Standard curve calculates separately the contrast solution, institute
State SiO in blank solution filtrate and the dosing solution filtrate2Concentration, according to the concentration calculation antiscaling rate.
2. the oil field according to claim 1 evaluation method of water silicate scale preventative, which is characterized in that in step (5),
First the blank solution and dosing solution are placed under constant temperature and place 12-48h, thermostat temperature is any in 30~70 DEG C
It is worth, the blank solution and dosing solution is taken out after constant temperature, places to room temperature；Again respectively using blank solution described in membrane filtration
With dosing solution.
3. the oil field according to claim 2 evaluation method of water silicate scale preventative, which is characterized in that the constant temperature temperature
Degree is 44-46 DEG C, and constant temperature lower standing time is for 24 hours.
4. the oil field according to claim 1 evaluation method of water silicate scale preventative, which is characterized in that in step (6),
The contrast solution, blank solution filtrate and dosing solution filtrate are diluted, take a certain amount of contrast solution, blank respectively
Hydrochloric acid solution and ammonium molybdate solution are added in Xiang Suoshu dilution for the dilution of solution filtrate and dosing solution filtrate；It is described right
Same multiple is diluted respectively according to solution, the blank solution filtrate and the dosing solution filtrate, and the multiple is 2-10 times.
5. the oil field according to claim 3 evaluation method of water silicate scale preventative, which is characterized in that the hydrochloric acid is molten
The mass concentration of liquid is 20%, and the mass concentration of the ammonium molybdate solution is 10%；The additional amount of the hydrochloric acid solution with it is described
The volume ratio of any one in the dilution of contrast solution, blank solution filtrate and dosing solution filtrate is 1:1；The ammonium molybdate
The volume of any one in the dilution of the additional amount of solution and the contrast solution, blank solution filtrate and dosing solution filtrate
Than for 1.5:1.
6. the oil field according to claim 4 evaluation method of water silicate scale preventative, which is characterized in that the sulfuric acid is molten
The mass concentration of liquid is 60-65%, and the mass concentration of the ascorbic acid solution is 2%；The additional amount of the sulfuric acid solution with
The volume ratio of any one in the dilution of the contrast solution, blank solution filtrate and dosing solution filtrate is 1:1；It is described anti-
Any one in the additional amount of bad hematic acid solution and the dilution of the contrast solution, blank solution filtrate and dosing solution filtrate
Volume ratio be 1:1.
7. the oil field according to claim 5 evaluation method of water silicate scale preventative, which is characterized in that in step (6),
Absorbance is measured at 810nm.
8. the oil field according to claim 5 evaluation method of water silicate scale preventative, which is characterized in that the impedance agent
For acrylic acid -2- acrylamide-2-methyl propane sulfonic copolymer.
9. the oil field according to claim 5 evaluation method of water silicate scale preventative, which is characterized in that described first is molten
The concentration of NaCl is 10g/L, CaCl in liquid2Concentration be 4.44g/L, MgCl2·2H2The concentration of O is 3.38g/L；Configuration second
Solution, Na in second solution2SiO3·9H2The concentration of O is 10.667g/L.
10. the oil field according to claim 5 evaluation method of water silicate scale preventative, which is characterized in that in step (2)
When preparing the contrast solution, the volume ratio of the distilled water of second solution and addition is 5:95.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810249963.3A CN110361338A (en) | 2018-03-26 | 2018-03-26 | A kind of evaluation method of oil field water silicate scale preventative |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810249963.3A CN110361338A (en) | 2018-03-26 | 2018-03-26 | A kind of evaluation method of oil field water silicate scale preventative |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110361338A true CN110361338A (en) | 2019-10-22 |
Family
ID=68211919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810249963.3A Pending CN110361338A (en) | 2018-03-26 | 2018-03-26 | A kind of evaluation method of oil field water silicate scale preventative |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110361338A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557318A (en) * | 2020-11-19 | 2021-03-26 | 西安热工研究院有限公司 | Method for rapidly evaluating scale inhibition performance of reverse osmosis scale inhibitor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060035945A (en) * | 2004-10-21 | 2006-04-27 | 유시정 | Antifouling functional ceramic coating composition |
| CN102838215A (en) * | 2012-09-18 | 2012-12-26 | 济南大学 | Preparation method of multiple-effect compound type corrosion and scale inhibitor |
| CN103808875A (en) * | 2012-11-13 | 2014-05-21 | 陈柄宇 | Method for testing influence of sodium chloride content on anti-scale effect |
| CN104458606A (en) * | 2014-11-18 | 2015-03-25 | 中国石油天然气股份有限公司 | Method for measuring silicon concentration in oilfield tri-component complex flooding produced sewage |
| CN205384271U (en) * | 2016-03-08 | 2016-07-13 | 中国石油天然气股份有限公司 | Developments tubular anti -scaling agent rating of merit system |
-
2018
- 2018-03-26 CN CN201810249963.3A patent/CN110361338A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20060035945A (en) * | 2004-10-21 | 2006-04-27 | 유시정 | Antifouling functional ceramic coating composition |
| CN102838215A (en) * | 2012-09-18 | 2012-12-26 | 济南大学 | Preparation method of multiple-effect compound type corrosion and scale inhibitor |
| CN103808875A (en) * | 2012-11-13 | 2014-05-21 | 陈柄宇 | Method for testing influence of sodium chloride content on anti-scale effect |
| CN104458606A (en) * | 2014-11-18 | 2015-03-25 | 中国石油天然气股份有限公司 | Method for measuring silicon concentration in oilfield tri-component complex flooding produced sewage |
| CN205384271U (en) * | 2016-03-08 | 2016-07-13 | 中国石油天然气股份有限公司 | Developments tubular anti -scaling agent rating of merit system |
Non-Patent Citations (2)
| Title |
|---|
| 袁兆祺等: "基于BP神经网络的天然气集输管道结垢预测", 《西安石油大学学报（自然科学版）》 * |
| 郭磊: "油田硅垢缓蚀防垢剂及超声波防垢技术研究", 《中国优秀博硕士学位论文全文数据库(硕士)工程科技Ⅰ辑》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112557318A (en) * | 2020-11-19 | 2021-03-26 | 西安热工研究院有限公司 | Method for rapidly evaluating scale inhibition performance of reverse osmosis scale inhibitor |
| CN112557318B (en) * | 2020-11-19 | 2024-01-23 | 西安热工研究院有限公司 | Method for rapidly evaluating scale inhibition performance of reverse osmosis scale inhibitor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Laroff et al. | Equilibrium and kinetics of the acid dissociation of several hydroxyalkyl radicals | |
| Rabenstein et al. | Determination of microscopic acid dissociation constants by nuclear magnetic resonance spectrometry | |
| Asher et al. | Polymerized crystalline colloidal array chemical-sensing materials for detection of lead in body fluids | |
| JP2010527001A (en) | Method and apparatus for measuring the pH of a low alkalinity solution | |
| CN104483311A (en) | Indicator for simultaneous measurement of calcium, barium and magnesium in silicon-calcium-barium-magnesium by adopting EDTA titration method | |
| CN109596683A (en) | A method of fluorine content in measurement gypsum, silica | |
| Baker | A new approach to soil testing: II. Ionic equilibria involving H, K, Ca, Mg, Mn, Fe, Cu, Zn, Na, P, and S | |
| CN109187395A (en) | The measuring method of total phosphorus content in a kind of detergent | |
| Ulusoy | Determination of trace inorganic mercury species in water samples by cloud point extraction and UV-Vis spectrophotometry | |
| CN110361338A (en) | A kind of evaluation method of oil field water silicate scale preventative | |
| Zhang et al. | Determination of ultra-trace amounts of cobalt in seawater by graphite furnace atomic absorption spectrometry after pre-concentration with Ni/8-quinolinol/1-nitroso-2-naphthol complex | |
| CN107132298B (en) | A method of high hydroscopic resin water absorption rate is measured using tracer Headspace-Gas Chromatography | |
| Amin | Utilization of solid phase spectrophotometry for determination of trace amounts of beryllium in natural water | |
| US20070037289A1 (en) | Method of calibrating the zero point of an apparatus used to determine a quantity of silica using a cororimetric method | |
| CN105223143B (en) | A kind of method of pressure break liquid hold-up in measure oilfield sewage | |
| CN105842388A (en) | Method for measuring sodium carbonate in sintering synergist through acid-base titration | |
| Dyer et al. | An improved method for the determination of phosphate by photoelectric colorimetry | |
| CN110261335A (en) | A method of measurement poly-epoxy succinic acid content | |
| Blaies et al. | A simplified method for staining mast cells with astra blue | |
| CN108802083A (en) | A kind of method of sulphur, chlorinity in measurement triphenylphosphine | |
| Kissel et al. | Sodium ion binding in human serum. | |
| Nichols et al. | Colorimetric determination of fluoride | |
| CN102539357B (en) | Method for testing aluminum element content in aluminum gallium and nitrogen wafer epitaxial layer | |
| CN107656008A (en) | The assay method of calcium oxide content in a kind of calcium stearate | |
| KR102258375B1 (en) | Method of measuring for water soluble chlorine ion having improved precision |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191022 |