CN113049786B - Additive emulsifying property determining method - Google Patents
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- CN113049786B CN113049786B CN201911367024.XA CN201911367024A CN113049786B CN 113049786 B CN113049786 B CN 113049786B CN 201911367024 A CN201911367024 A CN 201911367024A CN 113049786 B CN113049786 B CN 113049786B
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- 239000000654 additive Substances 0.000 title claims abstract description 288
- 230000000996 additive effect Effects 0.000 title claims abstract description 275
- 230000001804 emulsifying effect Effects 0.000 title claims abstract description 95
- 238000000034 method Methods 0.000 title claims abstract description 45
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 268
- 239000007762 w/o emulsion Substances 0.000 claims abstract description 138
- 239000008367 deionised water Substances 0.000 claims abstract description 67
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 67
- 230000002596 correlated effect Effects 0.000 claims abstract description 11
- 239000002245 particle Substances 0.000 claims description 62
- 238000003756 stirring Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 10
- 238000004945 emulsification Methods 0.000 claims description 5
- 238000012216 screening Methods 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 4
- 239000003921 oil Substances 0.000 description 320
- 235000019198 oils Nutrition 0.000 description 320
- 238000000926 separation method Methods 0.000 description 11
- 239000003795 chemical substances by application Substances 0.000 description 10
- 230000008569 process Effects 0.000 description 10
- 239000007788 liquid Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 230000000007 visual effect Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- 238000013019 agitation Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000000691 measurement method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 235000019476 oil-water mixture Nutrition 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A90/00—Technologies having an indirect contribution to adaptation to climate change
- Y02A90/30—Assessment of water resources
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Abstract
The application discloses an additive emulsifying property determining method, which belongs to the technical field of detection and is used for determining the influence of an additive on the emulsifying property of oil transportation by a pipeline, and the method comprises the following steps: adding a specified amount of deionized water to the first additive oil and the second non-additive oil; emulsifying the first additive oil and the second unaddressed oil added with the specified amount of deionized water to obtain the first additive oil containing the water-in-oil emulsion and the second unaddressed oil containing the water-in-oil emulsion; standing a first additive oil containing a water-in-oil emulsion and a second unadditized oil containing a water-in-oil emulsion for a preset period of time; obtaining the mass water content of the upper layer oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the upper layer oil of the second additive oil containing the water-in-oil emulsion after standing; and determining the influence degree of the additive on the emulsifying property of the oil transportation by the pipeline according to the difference value of the mass water content, wherein the difference value of the mass water content is positively correlated with the influence degree of the additive on the emulsifying property of the oil transportation by the pipeline.
Description
Technical Field
The application relates to the technical field of detection, in particular to a method for determining the emulsifying property of an additive.
Background
At present, before the delivery of the oil pipeline, the pipeline can be firstly subjected to water delivery on the whole line, so that the safety performance, equipment debugging and engineering quality of the pipeline are detected in the whole line water delivery process, oil is injected into the pipeline after normal detection and debugging, the oil in the injection pipeline usually contains additives, and the performance of the oil can be improved by different types of additives. When the additive oil is transported, water and oil remained in the pipeline form water-in-oil emulsion under the action of the additive in the flowing process, the flowing pressure of the water-in-oil emulsion can be increased in the process of flowing through the pipeline, and the conveying capacity of the pipeline is reduced. It is therefore particularly important to select suitable additives by analysing the effect of different additives on the emulsifying properties of the oil.
The method for determining the emulsifying property of the additive in the related art comprises the following steps: and adding different types of additives into the multiple parts of unaddressed oil in a one-to-one correspondence manner to form multiple parts of additive oil, wherein the unaddressed oil is oil without any additive, and the additive oil is oil with the additive. Wherein the metering of each additive is the same preset dose; and (3) standing a plurality of additive oil parts, observing the oil-water mixing condition of the additive oil parts before and after the standing process, wherein the additive oil with more obvious oil-water layering is unstable, and the emulsion is more fully demulsified, so that the influence on the pipeline oil transportation is less, and the emulsion breaking is a more proper additive, wherein the demulsification refers to the process that dispersed phase small liquid beads of the emulsion are aggregated to form large liquid drops, and finally the oil-water two phases are layered and separated out.
The inventors have found that in the process of implementing the present application, at least the following drawbacks exist in the above manner: in the related art, the accuracy of the method for determining the oil emulsifying property of the additive is low by visually observing the oil-water layering degree.
Disclosure of Invention
In order to solve the problem of low accuracy of the method in the related art, the embodiment of the application provides a method for determining the emulsifying property of an additive. The technical scheme is as follows:
according to a first aspect of the present application, there is provided a method of determining the emulsifying properties of an additive for determining the effect of the additive on the emulsifying properties of a tubular oil, the method comprising:
obtaining two parts of unadditized oil, wherein the two parts of unadditized oil comprise a first unadditized oil and a second unadditized oil;
adding a preset dose of the additive to the first unaddressed oil to form a first adulterated oil;
adding a specified amount of deionized water to the first additive oil and the second unaddressed oil;
emulsifying the first additive oil added with the specified amount of deionized water and the second unaddressed oil to obtain a first additive oil containing a water-in-oil emulsion and a second unaddressed oil containing a water-in-oil emulsion;
standing the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion for a preset period of time;
obtaining the mass water content of the upper layer oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the upper layer oil of the second additive oil containing the water-in-oil emulsion after standing;
determining the influence degree of the additive on the oil transportation emulsifying property of the pipe according to the difference value of the mass water content, wherein the difference value of the mass water content is positively correlated with the influence degree of the additive on the oil transportation emulsifying property of the pipe, and the difference value of the mass water content meets c1=a1-b 1, wherein c1 is the difference value of the mass water content, a1 is the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion, and b1 is the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
Optionally, the method further comprises:
acquiring the particle size of water drops of the first additive oil containing the water-in-oil emulsion and the particle size of water drops of the second unadditized oil containing the water-in-oil emulsion;
determining the influence degree of the additive on the oil transportation emulsifying property of the pipe according to the difference value of the particle size values of the water drops, wherein the difference value of the particle size values of the water drops is inversely related to the influence degree of the additive on the oil transportation emulsifying property of the pipe, the difference value of the particle size values of the water drops meets c2=a2-b 2, c2 is the difference value of the particle size of the water drops, a2 is the particle size value of the water drops of the upper oil of the first additive oil containing the water-in-oil emulsion, and b2 is the particle size value of the water drops of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
Optionally, before the adding the additive in the preset dose to the unaddressed oil, the method further includes:
adding different doses of additives into a plurality of parts of unadditized oil with the same dose to form a plurality of parts of additive oil with different doses, wherein the unadditized oil is oil obtained by mixing oil with deionized water;
measuring interfacial tension between oil in the additive oil and deionized water at different dosages;
and determining the dosage of the additive in the additive oil with the highest interfacial tension value as the preset dosage.
Optionally, the adding deionized water to the first additive oil and the second unadditized oil in a specified amount includes:
and adding the deionized water into the first additive oil and the second unadditized oil according to the proportion of 1-3% of volume water content.
Optionally, emulsifying the first additive oil added with the specified amount of deionized water and the second unaddressed oil comprises:
and (3) stirring the first additive oil and the second unadditized oil added with the specified amount of deionized water by using a stirrer to emulsify, wherein the stirring speed is 1500-2000 revolutions per minute, and the stirring time is 5 minutes.
Optionally, the deionized water has a temperature of 20 ℃ and a resistivity of >15mΩ·cm.
Optionally, the adding different doses of the additive to multiple parts of the same dose of unaddressed oil to form multiple parts of different doses of the additive oil includes:
the additive in the concentration range of 0-1000 parts per million is added to multiple parts of the same dose of unaddressed oil in 21 parts increments of 50 parts per million concentration.
According to a second aspect of the present application, there is provided an additive emulsifying property determination apparatus for determining the effect of an additive on the emulsifying properties of a pipe oil, the apparatus comprising:
the device comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring two parts of unadditized oil, and the two parts of unadditized oil comprise a first unadditized oil and a second unadditized oil;
the proportioning module is used for adding a preset dose of the additive into the first unadditized oil to form first additive oil, and adding a specified amount of deionized water into the first additive oil and the second unadditized oil;
an emulsifying module for emulsifying the first additive oil added with the specified amount of deionized water and the second unadditized oil to obtain a first additive oil containing a water-in-oil emulsion and a second unadditized oil containing a water-in-oil emulsion;
a standing module for standing the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion for a preset period of time;
the mass water content acquisition module is used for acquiring the mass water content of the upper layer oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the upper layer oil of the second additive oil containing the water-in-oil emulsion after standing;
the first determining module is configured to determine an influence degree of the additive on the oil transportation emulsifying property of the pipe according to a difference value of a mass water content, wherein the difference value of the mass water content is positively correlated with the influence degree of the additive on the oil transportation emulsifying property of the pipe, and the difference value of the mass water content satisfies c1=a1-b 1, wherein c1 is the difference value of the mass water content, a1 is the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion, and b1 is the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
Optionally, the apparatus further includes:
a water drop particle size value acquisition module, configured to acquire a water drop particle size value of the first additive oil containing the water-in-oil emulsion and a water drop particle size value of the second unadditized oil containing the water-in-oil emulsion;
and a second determining module, configured to determine an influence degree of the additive on the oil transportation emulsifying property of the pipe according to a difference value of a water droplet particle size value, where the difference value of the water droplet particle size value is inversely related to the influence degree of the additive on the oil transportation emulsifying property of the pipe, and the difference value of the water droplet particle size value satisfies c2=a2-b 2, where c2 is the difference value of the water droplet particle size value, a2 is the water droplet particle size value of the upper oil of the first additive oil containing the water-in-oil emulsion, and b2 is the water droplet particle size value of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
Optionally, the apparatus further includes:
the screening module is used for adding different doses of additives into a plurality of parts of unadditized oil with the same dose to form a plurality of parts of additive oil with different doses, wherein the unadditized oil is oil obtained by mixing oil with deionized water;
measuring interfacial tension between oil in the additive oil and deionized water at different dosages;
and determining the dosage of the additive in the additive oil with the highest interfacial tension value as the preset dosage.
The technical scheme provided by the embodiment of the application can comprise the following beneficial effects:
the method comprises the steps of obtaining the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion after standing and the mass water content of the upper oil of the second additive oil containing the water-in-oil emulsion after standing, determining the influence degree of the additive on the oil transportation emulsifying property of the pipeline according to the difference value of the mass water content, positively correlating the difference value of the mass water content with the influence degree of the additive on the oil transportation emulsifying property of the pipeline, and comparing the difference value with a specific value of the accurate mass water content to obtain more accurate data results. The problem of the method of determining the oil emulsifying property of the additive by visually observing the oil-water layering degree in the related art is solved, and the effect of improving the accuracy of determining the emulsifying property of the additive is achieved.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the application and together with the description, serve to explain the principles of the application.
FIG. 1 is a flow chart of a method for determining emulsifying properties of an additive provided in an embodiment of the present application;
FIG. 2 is a flow chart of another additive emulsifying property determination method provided in an embodiment of the present application;
FIG. 3 is a flow chart of a specific experiment of the flow chart in FIG. 2;
fig. 4 is a schematic structural view of an additive emulsifying property determining apparatus according to an embodiment of the present application.
Specific embodiments thereof have been shown by way of example in the drawings and will herein be described in more detail. These drawings and the written description are not intended to limit the scope of the inventive concepts in any way, but to illustrate the concepts of the present application to those skilled in the art by reference to specific embodiments.
Detailed Description
For the purpose of making the objects, technical solutions and advantages of the present invention more apparent, the embodiments of the present invention will be described in further detail with reference to the accompanying drawings.
At present, the full-line water filling intermodal transportation is carried out before pipeline delivery, namely, after the water delivery carried out by the full line of the pipeline is finished, a low-lying area inside the pipeline and a small amount of water remained at the turning part of the pipeline are mixed in the flowing process of the oil and the water in the pipeline after the oil containing additives such as antiwear agent and the like is injected into the pipeline, so as to form the water-in-oil emulsion.
In the method for determining the emulsifying property of the additive in the related art, the final result is judged by an visual observation method, namely the influence of the current additive on the oil transportation by visually observing the mixing degree of oil and water after standing for a preset period of time. However, when the oil-water mixing degree is smaller, visual observation is difficult to distinguish, the observation result is not accurate enough, and when visual observation is carried out for evaluation, the influence of human subjective factors is larger, and the obtained result is not fair.
The embodiment of the application provides a method for determining the emulsifying property of an additive, which can solve the problems in the related art.
Fig. 1 is a flowchart of a method for determining emulsifying properties of an additive according to an embodiment of the present application. The method comprises the following steps:
step 101, obtaining two parts of unadditized oil, wherein the two parts of unadditized oil comprise a first unadditized oil and a second unadditized oil.
Step 102, adding a preset dosage of additive into the first additive-free oil to form first additive oil.
Step 103, adding a designated amount of deionized water to the first additive oil and the second non-additive oil.
Step 104, emulsifying the first additive oil and the second unaddressed oil added with the designated amount of deionized water to obtain the first additive oil containing the water-in-oil emulsion and the second unaddressed oil containing the water-in-oil emulsion.
Step 105, standing the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion for a preset period of time.
And 106, obtaining the mass water content of the standing upper layer oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the upper layer oil of the second additive oil containing the water-in-oil emulsion.
Step 107, determining the influence degree of the additive on the oil transportation emulsifying property according to the difference of the mass water content, wherein the difference of the mass water content is positively correlated with the influence degree of the additive on the oil transportation emulsifying property, and the difference of the mass water content satisfies c1=a1-b 1, wherein c1 is the difference of the mass water content, a1 is the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion, and b1 is the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
In summary, the embodiment of the application provides a method for determining the emulsifying performance of an additive, which includes obtaining the mass water content of a first additive oil of a water-in-oil emulsion after standing and the mass water content of a second additive oil of the water-in-oil emulsion, determining the influence degree of the additive on the emulsifying performance of oil transportation according to the difference value of the mass water content, wherein the difference value of the mass water content and the influence degree of the additive on the emulsifying performance of oil transportation are positively correlated, and comparing the difference value with a specific numerical value of the precise mass water content to obtain a more precise data result. The problem of the method of determining the oil emulsifying property of the additive by visually observing the oil-water layering degree in the related art is solved, and the effect of improving the accuracy of determining the emulsifying property of the additive is achieved.
Referring to fig. 2, a flowchart of another method for determining emulsifying properties of an additive according to an embodiment of the present application is shown, where the method includes:
step 201, adding different doses of additives into a plurality of parts of unadditized oil with the same dose to form a plurality of parts of additive oil with different doses, wherein the unadditized oil is oil obtained by mixing oil with deionized water.
Mixing deionized water with unadditized oil, and adding additives into the mixed unadditized oil. The dosage of the additive may be a number that increases in units over a range of values, and may be, for example, increased in units of 50 parts per million (ppm) over a range of 0 to 1000 ppm, i.e., 50 for the first portion of additive, 100 for the second portion of additive, and so on to obtain 21 different doses of additive, which 21 different doses of additive are added to 21 portions of unaddressed oil that is obtained by mixing with deionized water. Wherein deionized water refers to pure water from which impurities in the form of ions have been removed. Deionized water is added into the unadditized oil, so that subsequent detection results are not interfered. The deionized water added may be deionized water having a temperature of 20 c and a resistivity of 18.2mΩ·cm. Deionized water with different resistivity at other temperatures is also possible, and the embodiments of the present application are not limited herein.
Step 202, measuring interfacial tension between oil and deionized water in the additive oil under different dosages.
When the interfacial tension of oil and deionized water is low, the water-in-oil emulsion is stable, so that the difficulty of oil-water separation is high, namely the dosage of the additive ensures that the water-in-oil emulsion in the pipeline oil transportation is stable, and the pipeline oil transportation is difficult to separate from the water remained in the pipeline, so that the safe transportation of the pipeline is affected. When the interfacial tension of the oil and the deionized water is higher, the water-in-oil emulsion is unstable, so that the difficulty of oil-water separation is low, namely the dosage of the additive makes the water-in-oil emulsion in the oil transportation of the pipe unstable, the oil transportation of the pipe is easy to separate from the water remained in the pipe, and the safe transportation of the pipe is not influenced. The specific measurement method of the interfacial tension can refer to the related art, and the embodiments of the present application are not described herein.
And 203, determining the dosage of the additive in the additive oil with the highest interfacial tension value as a preset dosage.
The additive oil with the highest interfacial tension value is the water-in-oil emulsion of the additive oil added with the additive with the dosage, is unstable, and oil-water separation is easy, so that the safe transportation of the pipeline is not affected. The dose of the additive that gives the highest interfacial tension value is thus selected among the plurality of sets of different doses of additive as the preset dose in the subsequent step.
After the preset dose of the additive is obtained in the above steps 201-203, the second part of the experiments from step 204 to step 2093 is performed using the preset dose.
Step 204, obtaining two parts of unaddressed oil, wherein the two parts of unaddressed oil comprise a first unaddressed oil and a second unaddressed oil.
The first unadditized oil and the second unadditized oil are two identical unadditized oils of equal mass and weight. The first unadditized oil and the second unadditized oil may also be pipe oil with no additive added.
Step 205, adding a preset dose of additive to the first unaddressed oil to form a first adulterated oil.
The preset dosage is the preset dosage value obtained in the steps 201-203, and the added additives can be different types of antiwear agents or other additives capable of improving the oil transportation performance of the pipe, and the embodiment of the application is not limited herein.
And 206, adding deionized water into the first additive oil and the second non-additive oil according to the proportion of 1-3% of volume water content.
Because the residual water in the pipeline is less, the deionized water added in the experimental process is not too much, so that the experimental device is more close to the real situation in the pipeline. Deionized water is injected into both the first additive oil and the second non-additive oil, and the proportion of the deionized water can be 1-3% of the volume water content, and other proportions of the deionized water can also be added. The deionized water added may be deionized water having a temperature of 20 ℃ and a resistivity of >15mΩ·cm. Deionized water with different resistivity at other temperatures is also possible, and the embodiments of the present application are not limited herein. The temperature and resistivity of the deionized water added in the step are the same as those of the deionized water added in the step 201, so that the test result is more accurate.
Step 207, stirring the first additive oil and the second unaddressed oil added with the designated amount of deionized water by using a stirrer to emulsify, wherein the stirring speed is 1500-2000 rpm, and the stirring time is 5min, so as to obtain the first additive oil containing the water-in-oil emulsion and the second unaddressed oil containing the water-in-oil emulsion.
Emulsification is an interfacial phenomenon between liquids, two incompatible liquids (oil and deionized water) are separated into two layers in a vessel, with a small density oil in the upper layer and a large density water in the lower layer, under intense agitation. Deionized water is dispersed in the oil to form a water-in-oil emulsion. In the embodiment of the application, the stirrer is used for emulsification, the parameters of the stirrer are set to 1500-2000 rpm, and the stirring time is 5min. Other durations and rotational speeds of the agitator are also possible, and the embodiments of the present application are not limited in this regard.
Step 208, measuring the water droplet size of the first additive oil comprising the water-in-oil emulsion and the water droplet size of the second unadditized oil comprising the water-in-oil emulsion.
In the stirred water-in-oil emulsion, deionized water exists in the form of water drops, and the influence degree of the additive on the oil transportation emulsifying property of the pipe can be judged by measuring the particle size value of the water drops of the deionized water. The particle size of the water droplets of the first additive oil containing the water-in-oil emulsion and the particle size of the water droplets of the second unadditized oil containing the water-in-oil emulsion may be measured using an in-line particle analyzer in the examples of the present application. The specific use method of the online particle analyzer can refer to the related technology, and the embodiments of the present application are not described herein.
Step 209, determining the influence degree of the additive on the oil transportation emulsifying property according to the difference value of the particle size values of the water drops, wherein the difference value of the particle size values of the water drops is inversely related to the influence degree of the additive on the oil transportation emulsifying property, the difference value of the particle size values of the water drops satisfies c2=a2-b 2, c2 is the difference value of the particle size values of the water drops, a2 is the particle size value of the water drops of the upper oil of the first additive oil containing the water-in-oil emulsion, and b2 is the particle size value of the water drops of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
The smaller the particle size of the water drops is, the more sufficient the oil-water mixture is, the more stable the water-in-oil emulsion is, the more difficult the oil-water separation is, and therefore the safe transportation of the pipeline is affected. The larger the water droplet size value is, the less the oil-water mixing is, the more unstable the water-in-oil emulsion is, the more easily the oil-water is separated, and the less the influence on the safe transportation of the pipeline is. The difference in the particle size values of the water droplets is inversely related to the extent to which the additive affects the emulsifying properties of the oil transportation pipe.
Since the stability of the water-in-oil emulsion depends on the combined action of various factors such as interfacial tension, temperature, water content, particle size value of water droplets, etc., a plurality of influencing factors can be referred to at the same time in determining the emulsifying property of the additive, thus making the determination result more comprehensive. The above measurement result is taken into the formula c2=a2-b 2, and a difference in the particle diameter value of the water droplets is obtained, which can be one of the results of determining the emulsifying property of the additive.
Step 2091, standing the first additive oil containing the water-in-oil emulsion and the second unaddressed oil containing the water-in-oil emulsion for a preset period of time.
The water-in-oil emulsion stirred by the stirrer is kept stand for a preset period of time, so that oil-water separation can be carried out, meanwhile, the oil-water separation state after standing can be recorded, namely, the turbidity of the layered oil phase of the water-in-oil emulsion is visually observed, and when oil-water delamination is obvious, namely, the turbidity of the layered oil phase is smaller, the water-in-oil emulsion is unstable, and the influence on safe transportation of a pipeline is smaller. When the oil-water delamination is less obvious, namely the turbidity of the layered oil phase is larger, the water-in-oil emulsion is more stable, and the influence on the safe transportation of the pipeline is larger. In the embodiment of the application, the oil-water separation state is observed after standing for 2 hours, the standing time length can also be changed according to the experimental process, and the embodiment of the application is not limited herein.
Step 2092, measuring the mass water content of the top oil of the first additive oil containing the water-in-oil emulsion after standing and the mass water content of the top oil of the second unadditized oil containing the water-in-oil emulsion.
The degree of influence of the additive on the emulsifying property of the oil transportation can be determined according to the mass water content of the upper layer oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the upper layer oil of the second unadditized oil containing the water-in-oil emulsion after standing.
Step 2093, determining the influence degree of the additive on the oil transportation emulsifying property according to the difference of the mass water content, wherein the difference of the mass water content is positively correlated with the influence degree of the additive on the oil transportation emulsifying property, and the difference of the mass water content satisfies c1=a1-b 1, wherein c1 is the difference of the mass water content, a1 is the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion, and b1 is the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
The more the mass water content is, the more water is mixed in the oil, and at the moment, the more stable the water-in-oil emulsion is, the more difficult the oil-water separation is, so that the safe transportation of the pipeline is affected. The lower the mass water content, the less water mixed in the oil, and the more unstable the water-in-oil emulsion, the more easily the oil-water is separated, and the less the effect on the safe transportation of the pipeline is. Therefore, the difference of the mass water content is positively correlated with the influence degree of the additive on the oil transportation emulsifying property. The difference in mass water content can be obtained by the above formula c1=a1-b 1, and the difference can be used as one of the results of determining the emulsifying property of the additive.
The preparation temperature and the measurement temperature in the experimental process in the flow are the same, and the average earth temperature of the pipeline along the line is the annual average earth temperature.
In summary, the embodiment of the application provides a method for determining the emulsifying performance of an additive, which includes obtaining the mass water content of a first additive oil of a water-in-oil emulsion after standing and the mass water content of a second additive oil of the water-in-oil emulsion, determining the influence degree of the additive on the emulsifying performance of oil transportation according to the difference value of the mass water content, wherein the difference value of the mass water content and the influence degree of the additive on the emulsifying performance of oil transportation are positively correlated, and comparing the difference value with a specific numerical value of the precise mass water content to obtain a more precise data result. The problem of the method of determining the oil emulsifying property of the additive by visually observing the oil-water layering degree in the related art is solved, and the effect of improving the accuracy of determining the emulsifying property of the additive is achieved.
According to the above embodiment, an experimental procedure is illustrated, and the specific procedure is shown in fig. 3:
step 301, adding antiwear agent in the concentration range of 0 to 1000 parts per million at 20 ℃ into a plurality of parts of unaddressed oil with the same dosage in units of 50 parts per million increment.
Step 302, measuring interfacial tension between the oil in the additive oil and deionized water at different dosages at 20 ℃.
Step 303, obtaining the optimal dosage of 150 million percent concentration according to the measurement result.
And 304, obtaining two oil pipes with the same mass and weight, namely first additive oil and second additive-free oil respectively, wherein 150 million percent of antiwear agent is added into one part of the additive-free oil to form the first additive oil.
Step 305, adding deionized water into the second non-additive oil and the first additive oil according to the proportion of 1% of volume water content at 20 ℃.
Step 306, stirring the first additive oil and the second additive oil added with 1% of deionized water by using a stirrer to emulsify, wherein the stirring speed is 1800 rpm, and the stirring time is 5min. A first additive oil comprising a water-in-oil emulsion and a second unadditized oil comprising a water-in-oil emulsion are obtained.
Step 307, measuring the particle size of the water droplets of the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion by using an online particle analyzer.
The water droplets of the first additive oil containing the water-in-oil emulsion had a particle size of 24. Mu.m, and the water droplets of the second unadditized oil containing the water-in-oil emulsion had a particle size of 28. Mu.m.
Step 308, standing the first additive oil containing the water-in-oil emulsion and the second unaddressed oil containing the water-in-oil emulsion at 20 ℃ for 2 hours.
The state of oil-water separation of the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion after standing was observed.
Step 309, measuring the mass water content of the upper oil phase of the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion after standing by using a moisture meter.
And 3091, analyzing the measurement results to determine the influence of the antiwear agent on the emulsifying property of the oil transportation.
The first additive oil containing the water-in-oil emulsion has a smaller water droplet size than the second unaddressed oil containing the water-in-oil emulsion, so that the first additive oil formed by adding the antiwear agent at a concentration of 150 million is more unfavorable for oil-water separation than the second unaddressed oil containing the water-in-oil emulsion, and has a larger influence on the safe transportation of the pipeline and a larger influence on the safe transportation of the pipeline.
The first additive oil containing the water-in-oil emulsion has higher turbidity of the layered oil phase than the second unadditized oil containing the water-in-oil emulsion, and the water-in-oil emulsion is more stable, namely, the first additive oil formed by adding the antiwear agent with the concentration of 150 million percent has larger influence on the safe transportation of the pipeline;
the mass water content of the first additive oil containing the water-in-oil emulsion is larger than that of the second unadditized oil containing the water-in-oil emulsion, namely more water is mixed in the first additive oil formed by adding 150 million percent of antiwear agent, at the moment, the water-in-oil emulsion is more stable, the oil-water separation is more difficult, and the influence on the safe transportation of a pipeline is larger;
in summary, the addition of 150 parts per million concentration of antiwear agent can promote emulsification of pipeline transportation, thereby affecting pipeline transportation safety, and therefore, the addition of antiwear agent during pipeline transportation is not recommended.
Referring to fig. 4, a schematic structural diagram of an additive emulsifying property determining apparatus according to an embodiment of the present application is shown, where the additive emulsifying property determining apparatus includes:
the obtaining module 401 is configured to obtain two parts of unaddressed oil, where the two parts of unaddressed oil include a first unaddressed oil and a second unaddressed oil.
The proportioning module 402 is configured to add a predetermined amount of additive to the first non-additive oil to form a first additive oil, and add a specified amount of deionized water to the first additive oil and the second non-additive oil.
An emulsifying module 403 for emulsifying the first additive oil and the second unaddressed oil added with the specified amount of deionized water to obtain a first additive oil comprising a water-in-oil emulsion and a second unaddressed oil comprising a water-in-oil emulsion.
A rest module 404 for standing the first additive oil containing the water-in-oil emulsion and the second unaddressed oil containing the water-in-oil emulsion for a preset period of time.
And the mass water content acquisition module 405 is used for acquiring the mass water content of the standing upper layer oil containing the first additive oil of the water-in-oil emulsion and the mass water content of the upper layer oil containing the second additive oil of the water-in-oil emulsion.
A first determining module 406, configured to determine a degree of influence of the additive on the emulsifying performance of the oil transportation by the additive according to a difference of the mass water content, where the difference of the mass water content is positively correlated with the degree of influence of the additive on the emulsifying performance of the oil transportation by the additive, and the difference of the mass water content satisfies c1=a1-b 1, where c1 is the difference of the mass water content, a1 is the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion, and b1 is the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
Optionally, the additive emulsifying property determining apparatus 400 further includes:
the water droplet particle size value obtaining module 407 is configured to obtain a water droplet particle size value of a first additive oil containing a water-in-oil emulsion and a water droplet particle size value of a second unadditized oil containing a water-in-oil emulsion.
A second determining module 408, configured to determine an influence degree of the additive on the emulsifying property of the oil pipe according to a difference value of particle size values of water droplets, where the difference value of particle size values of water droplets is inversely related to the influence degree of the additive on the emulsifying property of the oil pipe, and the difference value of particle size values of water droplets satisfies c2=a2-b 2, where c2 is the difference value of particle size values of water droplets, a2 is the particle size value of water droplets of the upper oil of the first additive oil containing the water-in-oil emulsion, and b2 is the particle size value of water droplets of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
Optionally, the additive emulsifying property determining apparatus 400 further includes:
and a screening module 409, configured to add different doses of additives to a plurality of non-additive oils with the same dose to form a plurality of additive oils with different doses, where the non-additive oils are oils obtained by mixing oil with deionized water, measure interfacial tension between the oil in the additive oil with different doses and deionized water, and determine the dose of the additive in the additive oil with the highest interfacial tension value as a preset dose.
In summary, the embodiment of the application provides an additive emulsifying property determining device, by obtaining the mass water content of the top oil of the first additive oil containing the water-in-oil emulsion after standing and the mass water content of the top oil of the second non-additive oil containing the water-in-oil emulsion, and determining the influence degree of the additive on the oil conveying emulsifying property according to the difference value of the mass water content, the difference value of the mass water content and the influence degree of the additive on the oil conveying emulsifying property are positively correlated, and by comparing the difference value with the specific numerical value of the precise mass water content, more accurate data results are obtained. The problem of the method of determining the oil emulsifying property of the additive by visually observing the oil-water layering degree in the related art is solved, and the effect of improving the accuracy of determining the emulsifying property of the additive is achieved.
The foregoing description of the preferred embodiments is merely exemplary in nature and is in no way intended to limit the invention, since it is intended that all modifications, equivalents, improvements, etc. that fall within the spirit and scope of the invention.
Claims (4)
1. A method for determining the emulsifying properties of an additive, for determining the effect of the additive on the emulsifying properties of a tubular oil, the method comprising:
adding the additive in the concentration range of 0-1000 parts by weight into 21 parts of unadditized oil with the same dosage in a unit increment of 50 parts by weight, wherein the unadditized oil is oil obtained by mixing oil with deionized water;
measuring interfacial tension of oil in additive oil and deionized water under different dosages, wherein the degree of influence of the interfacial tension of the oil in the additive oil and the deionized water on the oil transportation emulsifying property of the pipe is inversely related;
determining the dosage of the additive in the additive oil with the highest interfacial tension value as a preset dosage;
obtaining two parts of unadditized oil, wherein the two parts of unadditized oil comprise a first unadditized oil and a second unadditized oil;
adding the preset dose of the additive to the first unadditized oil to form a first additivated oil;
adding deionized water into the first additive oil and the second non-additive oil according to the proportion of 1-3% of volume water content;
emulsifying the first additive oil added with the specified amount of deionized water and the second unaddressed oil to obtain a first additive oil containing a water-in-oil emulsion and a second unaddressed oil containing a water-in-oil emulsion;
measuring the particle size of the deionized water in the first additive oil containing the water-in-oil emulsion and the particle size of the deionized water in the second unadditized oil containing the water-in-oil emulsion;
determining the influence degree of the additive on the oil transportation emulsifying property of the pipe according to the difference value of the particle size values of the water drops, wherein the difference value of the particle size values of the water drops is inversely related to the influence degree of the additive on the oil transportation emulsifying property of the pipe, the difference value of the particle size values of the water drops meets c2=a2-b 2, c2 is the difference value of the particle size values of the water drops, a2 is the particle size value of the water drops of the upper oil of the first additive oil containing the water-in-oil emulsion, and b2 is the particle size value of the water drops of the upper oil of the second non-additive oil containing the water-in-oil emulsion;
standing the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion for a preset period of time;
measuring the mass water content of the standing top oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the top oil of the second additive oil containing the water-in-oil emulsion by using a moisture meter;
determining the influence degree of the additive on the oil transportation emulsifying property of the pipe according to the difference value of the mass water content, wherein the difference value of the mass water content is positively correlated with the influence degree of the additive on the oil transportation emulsifying property of the pipe, and the difference value of the mass water content meets c1=a1-b 1, wherein c1 is the difference value of the mass water content, a1 is the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion, and b1 is the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
2. The method of claim 1, wherein emulsifying the first additive oil and the second unaddressed oil added to the specified amount of deionized water comprises:
and stirring the first additive oil and the second additive oil added with the specified amount of deionized water by using a stirrer to emulsify, wherein the stirring speed is 1500-2000 revolutions per minute, and the stirring time is 5 minutes.
3. The method of claim 1, wherein the deionized water has a temperature of 20 ℃ and a resistivity of >15mΩ -cm.
4. An additive emulsifying property determination apparatus for determining the effect of an additive on the emulsifying property of a tubular oil, the apparatus comprising:
the screening module is used for adding the additive in the concentration range of 0-1000 parts by weight into a plurality of parts of unadditized oil with the same dosage in 21 parts by weight in a unit increment of 50 parts by weight, wherein the unadditized oil is oil obtained by mixing oil with deionized water;
measuring interfacial tension of oil in additive oil and deionized water under different dosages, wherein the degree of influence of the interfacial tension of the oil in the additive oil and the deionized water on the oil transportation emulsifying property of the pipe is inversely related;
determining the dosage of the additive in the additive oil with the highest interfacial tension value as a preset dosage;
the device comprises an acquisition module, a storage module and a control module, wherein the acquisition module is used for acquiring two parts of unadditized oil, and the two parts of unadditized oil comprise a first unadditized oil and a second unadditized oil;
the proportioning module is used for adding a preset dose of the additive into the first unadditized oil to form first additive oil, and adding deionized water into the first additive oil and the second unadditized oil according to the proportion of 1-3% of volume water content;
an emulsifying module for emulsifying the first additive oil added with the deionized water with a specified amount and the second unadditized oil to obtain a first additive oil containing water-in-oil emulsion and a second unadditized oil containing water-in-oil emulsion;
a standing module for standing the first additive oil containing the water-in-oil emulsion and the second unadditized oil containing the water-in-oil emulsion for a preset period of time;
the mass water content acquisition module is used for measuring the mass water content of the upper layer oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the upper layer oil of the second additive oil containing the water-in-oil emulsion after standing by using a moisture meter;
a first determining module, configured to determine an influence degree of the additive on the oil transportation emulsification performance of the pipe according to a difference value of a mass water content, where the difference value of the mass water content is positively related to the influence degree of the additive on the oil transportation emulsification performance of the pipe, and the difference value of the mass water content satisfies c1=a1-b 1, where c1 is the difference value of the mass water content, a1 is the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion, and b1 is the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion;
the water drop particle size value acquisition module is used for measuring the water drop particle size value of deionized water in the first additive oil containing the water-in-oil emulsion and the water drop particle size value of deionized water in the second unadditized oil containing the water-in-oil emulsion;
and a second determining module, configured to determine an influence degree of the additive on the oil transportation emulsifying property of the pipe according to a difference value of a water droplet particle size value, where the difference value of the water droplet particle size value is inversely related to the influence degree of the additive on the oil transportation emulsifying property of the pipe, and the difference value of the water droplet particle size value satisfies c2=a2-b 2, where c2 is the difference value of the water droplet particle size value, a2 is the water droplet particle size value of the upper oil of the first additive oil containing the water-in-oil emulsion, and b2 is the water droplet particle size value of the upper oil of the second non-additive oil containing the water-in-oil emulsion.
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