CN113049786A - Method for determining emulsifying property of additive - Google Patents
Method for determining emulsifying property of additive Download PDFInfo
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- CN113049786A CN113049786A CN201911367024.XA CN201911367024A CN113049786A CN 113049786 A CN113049786 A CN 113049786A CN 201911367024 A CN201911367024 A CN 201911367024A CN 113049786 A CN113049786 A CN 113049786A
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- 239000000654 additive Substances 0.000 title claims abstract description 231
- 230000000996 additive effect Effects 0.000 title claims abstract description 212
- 238000000034 method Methods 0.000 title claims abstract description 57
- 230000001804 emulsifying effect Effects 0.000 title claims abstract description 37
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 258
- 239000007762 w/o emulsion Substances 0.000 claims abstract description 134
- 238000004945 emulsification Methods 0.000 claims abstract description 64
- 239000008367 deionised water Substances 0.000 claims abstract description 63
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 63
- 239000002245 particle Substances 0.000 claims description 57
- 238000003756 stirring Methods 0.000 claims description 13
- 238000002156 mixing Methods 0.000 claims description 12
- 230000000694 effects Effects 0.000 claims description 8
- 238000012216 screening Methods 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 2
- 238000001514 detection method Methods 0.000 abstract description 4
- 238000000926 separation method Methods 0.000 description 14
- 239000003795 chemical substances by application Substances 0.000 description 12
- 230000008569 process Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 7
- 239000007788 liquid Substances 0.000 description 4
- 238000005259 measurement Methods 0.000 description 4
- 239000000839 emulsion Substances 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000007764 o/w emulsion Substances 0.000 description 2
- 230000000284 resting effect Effects 0.000 description 2
- 230000000007 visual effect 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
- 230000007547 defect Effects 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 150000002500 ions Chemical class 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000013517 stratification Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
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Abstract
The application discloses an additive emulsifying property determining method, belongs to the technical field of detection, and is used for determining the influence of an additive on the emulsifying property of pipe oil transportation, and the method comprises the following steps: adding a specified amount of deionized water into the first dosed oil and the second dosed oil; emulsifying the first additive oil and the second additive-free oil added with a specified amount of deionized water to obtain first additive oil containing water-in-oil emulsion and second additive-free oil containing water-in-oil emulsion; standing a first dosed oil containing a water-in-oil emulsion and a second unapplied oil containing a water-in-oil emulsion for a preset time; obtaining the mass water content of the upper oil of first additive oil containing water-in-oil emulsion after standing and the mass water content of the upper oil of second non-additive oil containing water-in-oil emulsion; and determining the influence degree of the additive on the oil transportation emulsification performance of the pipe according to the difference of the mass water content, wherein the difference of the mass water content is in positive correlation with the influence degree of the additive on the oil transportation emulsification performance of the pipe.
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 oil pipeline is put into production, the whole pipeline of the pipeline can be subjected to water delivery, so that the safety performance, equipment debugging and engineering quality of the pipeline are detected in the whole pipeline water delivery process, oil is injected into the pipeline after the detection and debugging are normal, the oil injected into the pipeline usually contains additives, and the performance of the oil can be improved by the additives of different types. When the additive oil is transported, water and oil remained in the pipeline form a water-in-oil emulsion under the action of the additive in the flowing process, and the flowing pressure of the water-in-oil emulsion is increased in the process of flowing through the pipeline, so that the conveying capacity of the pipeline is reduced. Therefore, it is important to select proper additives by analyzing the influence of different additives on the oil emulsification characteristics.
The method for determining the emulsifying property of the additive in the related art comprises the following steps: adding different additives into a plurality of portions of unblended oil in a one-to-one correspondence manner to form a plurality of portions of added oil, wherein the unblended oil is oil without any additives, and the added oil is oil with additives. Wherein each portion of additive is metered in the same predetermined amount; the emulsion breaking refers to the process that small liquid beads of dispersed phases of the emulsion are gathered to form large liquid drops, and finally oil and water phases are separated out in a layered mode.
In the process of implementing the present application, the inventors found that the above manner has at least the following defects: in the related art, the method for determining the oil emulsification characteristic of the additive is low in accuracy by visually observing the oil-water separation 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 the additive. The technical scheme is as follows:
according to a first aspect of the present application, there is provided an additive emulsification performance determination method for determining an effect of an additive on a pipe oil transportation emulsification performance, the method comprising:
obtaining two parts of unblended oil, wherein the two parts of unblended oil comprise first unblended oil and second unblended oil;
adding a preset dosage of the additive to the first unblended oil to form a first additivated oil;
adding a specified amount of deionized water into the first additivated oil and the second unadditized oil;
emulsifying the first dosed oil and the second unblended oil with the specified amount of deionized water to obtain a first dosed oil containing a water-in-oil emulsion and a second unblended oil containing a water-in-oil emulsion;
allowing the first dosed oil comprising a water-in-oil emulsion and the second unapplied oil comprising a water-in-oil emulsion to stand for a preset period of time;
obtaining the mass water content of the upper oil of first additive oil containing water-in-oil emulsion after standing and the mass water content of the upper oil of second non-additive oil containing water-in-oil emulsion;
determining the influence degree of the additive on the emulsification performance of the oil transportation pipe according to the difference of the mass water content, wherein the difference of the mass water content is in positive correlation with the influence degree of the additive on the emulsification performance of the oil transportation pipe, and the difference of the mass water content satisfies c1 ═ a1-b1, 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 additive-free oil containing the water-in-oil emulsion.
Optionally, the method further includes:
obtaining a particle size value of a water droplet of the first additivated oil containing water-in-oil emulsion and a particle size value of a water droplet of the second unadditivated oil containing water-in-oil emulsion;
determining the influence degree of the additive on the emulsification performance of the oil transportation pipe according to the difference of the water drop particle size values, wherein the difference of the water drop particle size values is in negative correlation with the influence degree of the additive on the emulsification performance of the oil transportation pipe, and the difference of the water drop particle size values satisfies the condition that c2 is a2-b2, wherein c2 is the difference of the water drop particle sizes, a2 is the water drop particle size value of the upper layer oil of the first additive oil containing water-in-oil emulsion, and b2 is the water drop particle size value of the upper layer oil of the second non-additive oil containing water-in-oil emulsion.
Optionally, before adding the preset dosage of the additive to the unblended oil, the method further comprises:
adding additives with different dosages into a plurality of portions of unblended oil with the same dosage to form a plurality of portions of unblended oil with different dosages, wherein the unblended oil is oil obtained by mixing oil and deionized water;
measuring the interfacial tension of oil and deionized water in the additive oil under different dosages;
and determining the dosage of the additive in the additized oil with the highest interfacial tension value as the preset dosage.
Optionally, the adding a specified amount of deionized water into the first dosed oil and the second unformulated oil includes:
and adding the deionized water into the first additive oil and the second non-additive oil according to the proportion that the volume water content is 1-3%.
Optionally, the emulsifying the first dosed oil and the second unformulated oil added with the specified amount of deionized water includes:
and stirring the first additive oil and the second additive-free oil added with the specified amount of deionized water by using a stirrer for emulsification, wherein the stirring speed is 1500-2000 r/min, and the stirring time is 5 min.
Optionally, the temperature of the deionized water is 20 ℃, and the resistivity is greater than 15M omega cm.
Optionally, the adding different dosages of additives into a plurality of portions of unblended oil with the same dosage to form a plurality of portions of additivated oil with different dosages, includes:
the additive was added in increments of 50 parts per million in a concentration range of 0 to 1000 parts per million to a plurality of portions of unblended oil of the same dosage.
According to a second aspect of the present application, there is provided an additive emulsification performance determining apparatus for determining an effect of an additive on a pipe oil transportation emulsification performance, 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 unblended oil, and the two parts of unblended oil comprise first unblended oil and second unblended oil;
the proportioning module is used for adding a preset dosage of the additive into the first non-dosed oil to form first dosed oil, and adding a specified amount of deionized water into the first dosed oil and the second non-dosed oil;
the emulsification module is used for emulsifying the first additive oil added with the specified amount of deionized water and the second non-additive oil to obtain first additive oil containing water-in-oil emulsion and second non-additive oil containing water-in-oil emulsion;
a standing module for standing the first dosed oil containing water-in-oil emulsion and the second unapplied oil containing water-in-oil emulsion for a preset time;
the mass water content acquisition module is used for acquiring the mass water content of the upper oil of first additive oil containing water-in-oil emulsion and the mass water content of the upper oil of second non-additive oil containing water-in-oil emulsion after standing;
the first determination module is used for determining the influence degree of the additive on the emulsification performance of the oil transportation pipe according to the difference of the mass water content, the difference of the mass water content is in positive correlation with the influence degree of the additive on the emulsification performance of the oil transportation pipe, and the difference of the mass water content satisfies c1 ═ a1-b1, 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.
Optionally, the apparatus further comprises:
a water droplet size value obtaining module for obtaining a water droplet size value of the first dosed oil containing water-in-oil emulsion and a water droplet size value of the second non-dosed oil containing water-in-oil emulsion;
a second determining module, configured to determine a degree of influence of the additive on the emulsification performance of the oil transportation pipe according to a difference between water droplet particle size values, where the difference between the water droplet particle size values is inversely related to the degree of influence of the additive on the emulsification performance of the oil transportation pipe, and the difference between the water droplet particle size values satisfies c2 ═ a2-b2, where c2 is the difference between the water droplet particle size values, 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 comprises:
the screening module is used for adding additives with different dosages into a plurality of portions of unblended oil with the same dosage to form a plurality of portions of unblended oil with different dosages, wherein the unblended oil is oil obtained by mixing oil and deionized water;
measuring the interfacial tension of oil and deionized water in the additive oil under different dosages;
and determining the dosage of the additive in the additized oil with the highest interfacial tension value as the preset dosage.
The technical scheme provided by the embodiment of the application can have the following beneficial effects:
the method comprises the steps of obtaining the mass water content of the upper oil of first additive oil containing water-in-oil emulsion after standing and the mass water content of the upper oil of second non-additive oil containing water-in-oil emulsion, determining the influence degree of the additive on the oil transportation emulsifying performance according to the difference of the mass water contents, wherein the difference of the mass water contents is in positive correlation with the influence degree of the additive on the oil transportation emulsifying performance, and comparing the difference through accurate specific values of the mass water contents to obtain a more accurate data result. The method solves the problem of lower accuracy of a method for determining the oil emulsification characteristic of the additive by visually observing the oil-water separation degree in the related technology, and achieves the effect of improving the accuracy of determining the emulsification performance of the additive.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present 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 emulsification properties of an additive provided in an embodiment of the present application;
FIG. 2 is a flow chart of another method for determining the emulsifying property of an additive provided in the examples of the present application;
FIG. 3 is a flow chart of a specific experiment of the process of FIG. 2;
fig. 4 is a schematic structural diagram of an additive emulsifying property determining apparatus provided in an embodiment of the present application.
With the above figures, there are shown specific embodiments of the present application, which will be described in more detail below. These drawings and written description are not intended to limit the scope of the inventive concepts in any manner, but rather to illustrate the inventive concepts to those skilled in the art by reference to specific embodiments.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in detail with reference to the accompanying drawings.
At present, the whole-line water filling combined transportation is carried out before the pipeline is put into production, namely, after the water transportation carried out in the whole line of the pipeline is finished, a small amount of water is remained in a low-lying area in the pipeline and a turning part of the pipeline, after oil containing additives such as an antiwear agent and the like is injected into the pipeline, the oil and the water are mixed in the flowing process of the pipeline to form a water-in-oil type emulsion.
In the method for determining the emulsifying performance of the additive in the related technology, the final result is judged by an intuitive observation method, namely the influence of the current additive on the pipe oil transportation is judged by observing the mixing degree of oil and water after standing for a preset time by naked eyes. However, when the oil-water mixing degree is small, the difference is difficult to distinguish by visual observation, the observation result is not accurate enough, and the influence of human subjective factors is large when the evaluation is carried out by visual observation, so that 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 emulsification performance of an additive provided in an embodiment of the present application. The method comprises the following steps:
102, adding a preset dosage of additive into the first unblended oil to form first added oil.
And 104, emulsifying the first additive oil and the second non-additive oil added with the specified amount of deionized water to obtain the first additive oil containing the water-in-oil emulsion and the second non-additive oil containing the water-in-oil emulsion.
And 106, acquiring the mass water content of the upper oil of the first additive oil containing the water-in-oil emulsion and the mass water content of the upper oil of the second non-additive oil containing the water-in-oil emulsion after standing.
To sum up, the embodiment of the present application provides an additive emulsification performance determining method, which includes obtaining a mass water content of an upper oil of a first additive oil containing a water-in-oil emulsion after standing and a mass water content of an upper oil of a second non-additive oil containing the water-in-oil emulsion, determining an influence degree of an additive on a pipe oil transportation emulsification performance according to a difference of the mass water contents, wherein the difference of the mass water contents is positively correlated with the influence degree of the additive on the pipe oil transportation emulsification performance, and comparing the difference through a specific numerical value of an accurate mass water content to obtain a more accurate data result. The method solves the problem of lower accuracy of a method for determining the oil emulsification characteristic of the additive by visually observing the oil-water separation degree in the related technology, and achieves the effect of improving the accuracy of determining the emulsification performance of the additive.
Please refer to fig. 2, which shows a flowchart of another method for determining emulsification performance of an additive provided in the embodiments of the present application, the method includes:
Mixing deionized water with the unadditized oil, and adding additives into the mixed unadditized oil. The additive dosage may be in increments of units over a range of values, and illustratively may be in increments of 50 parts per million concentration (ppm) over a range of 0 to 1000 parts per million concentration (ppm), i.e., a first portion of the additive is dosed at 50, a second portion of the additive is dosed at 100, and so on to provide 21 different doses of the additive, and the 21 different doses of the additive are added to 21 portions of unblended oil obtained after mixing with deionized water. Wherein the deionized water means pure water from which impurities in the form of ions are removed. Deionized water is added into the oil without the additive, so that the subsequent detection result is not interfered. The deionized water added may be deionized water having a temperature of 20 c and a resistivity of 18.2M Ω · cm. The deionized water may also have different resistivities at other temperatures, and the embodiments of the present application are not limited herein.
When the interfacial tension of the oil and the deionized water is lower, the water-in-oil emulsion is more stable, so that the difficulty of oil-water separation is higher, namely the additive in the dosage enables the water-in-oil emulsion in the pipeline oil to be more stable, and the pipeline oil and the water remained in the pipeline are difficult to separate, so that the safe transportation of the pipeline is influenced. When the interfacial tension of the oil and the deionized water is higher, the water-in-oil emulsion is more unstable, so that the difficulty of oil-water separation is lower, namely the additive in the dosage enables the water-in-oil emulsion in the pipeline oil to be more unstable, the pipeline oil and the water remained in the pipeline are easily separated, and the safe transportation of the pipeline cannot be influenced. The specific method for measuring the interfacial tension may refer to related technologies, and is not described herein in detail in this embodiment of the present application.
And step 203, determining the dosage of the additive in the additized oil with the highest interfacial tension value as a preset dosage.
The additive oil with the highest interfacial tension value indicates that the water-in-oil emulsion of the additive oil added with the additive is unstable, oil and water are easily separated, and the safe transportation of a pipeline cannot be influenced. The dosage of the additive with the highest interfacial tension value is selected from a plurality of groups of different dosages of additives as the preset dosage in the subsequent step.
After the predetermined amount of the additive is obtained from the above steps 201 to 203, the predetermined amount is used to perform the second part of the experiment from the subsequent step 204 to step 2093.
And 204, obtaining two parts of unadditized oil, wherein the two parts of unadditized oil comprise first unadditized oil and second unadditized oil.
The first unformulated oil and the second unformulated oil are equal in mass and weight and are two parts of the same unformulated oil. The first unblended oil and the second unblended oil may also be a pipe oil to which no additive has been added.
And 205, adding a preset dosage of additive into the first unblended oil to form first added oil.
The preset dosage is the preset dosage value obtained in the above steps 201 to 203, and the added additives may be different kinds of anti-wear agents, or other additives capable of improving the performance of the pipe oil transportation, and the embodiment of the present 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 that the volume water content is 1-3%.
Because the residual water in the pipeline is less, the deionized water added in the experimental process is not too much easily, and the real situation in the pipeline can be closer. Deionized water is injected into the first additive oil and the second non-additive oil, the proportion of the deionized water can be 1-3% of the volume water content, and deionized water with other proportions can also be added. The deionized water added may be deionized water having a temperature of 20 ℃ and a resistivity of >15M Ω · cm. The deionized water may also have different resistivities at other temperatures, and the embodiments of the present application are not limited herein. The temperature and resistivity of the deionized water added in this step are the same as those of the deionized water added in step 201, so as to ensure that the test result is more accurate.
And step 207, stirring the first additive oil and the second non-additive oil added with the specified amount of deionized water by using a stirrer for emulsification, wherein the stirring speed is 1500-2000 r/min, and the stirring time is 5min, so as to obtain the first additive oil containing the water-in-oil emulsion and the second non-additive oil containing the water-in-oil emulsion.
Emulsification is an interfacial phenomenon between liquids, and two incompatible liquids (oil and deionized water) are separated into two layers in a vessel, with less dense oil in the upper layer and more dense water in the lower layer, under vigorous 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 parameter of the stirrer is set to be 1500-2000 rpm, and the stirring time is 5 min. The parameter setting of the stirrer can be other time lengths and rotating speeds, and the embodiment of the application is not limited herein.
In the stirred water-in-oil emulsion, the deionized water exists in the form of water drops, and the influence degree of the additive on the oil transportation emulsification performance of the pipe can be judged by measuring the particle size value of the water drops of the deionized water. In the examples of the present application, an online particle analyzer may be used to measure the particle size value of a water droplet containing a first additivated oil of a water-in-oil emulsion and the particle size value of a water droplet containing a second unadditized oil of a water-in-oil emulsion. The specific use method of the online particle analyzer can refer to related technologies, and details are not repeated herein in this application embodiment.
The smaller the particle size value of the water drop is, the more sufficient the oil-water mixing is, and the more stable the water-in-oil emulsion is, the more difficult the oil-water separation is, thereby affecting the safe transportation of the pipeline. The larger the particle size value of the water droplet is, the less sufficient the oil-water mixing is, and at this time, the more unstable the water-in-oil emulsion is, the more easily the oil and water are separated, and the less influence on the safe transportation of the pipeline is. The difference in the particle size values of the water droplets is therefore inversely related to the degree of influence of the additive on the emulsifying performance of the pipeline oil.
Because the stability of the water-in-oil emulsion depends on the combined action of various factors, such as interfacial tension, temperature, water content, water droplet particle size value and the like, when the emulsifying performance of the additive is determined, a plurality of influencing factors can be simultaneously referred to, so that the determination result is more comprehensive. The above measurement results are substituted into the formula c 2-a 2-b2 to obtain the difference of the particle size values of the water droplets, and the difference can be used as one of the results for determining the emulsifying performance of the additive.
The method comprises the steps of standing the water-in-oil emulsion stirred by a stirrer for a preset time to separate oil from water, and recording the oil-water separation state after standing, namely visually observing the layered oil phase turbidity of the water-in-oil emulsion, wherein when the oil and water are layered obviously, namely the layered oil phase turbidity is smaller, the water-in-oil emulsion is more unstable, and the influence on the safe transportation of a pipeline is smaller. When the oil-water stratification is less obvious, namely the turbidity of the stratified 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 present application, the oil-water separation state is observed after standing for 2 hours, the standing time may also vary according to the experimental process, and the embodiment of the present application is not limited herein.
The influence degree of the additive on the oil transportation emulsification performance can be determined according to 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 non-additive oil containing the water-in-oil emulsion.
The more the mass water content is, the more water mixed in the oil is, and at the moment, the more stable the water-in-oil emulsion is, the more difficult the oil-water separation is, thereby affecting the safe transportation of the pipeline. The smaller the mass water content is, the less water is mixed in the oil, and the more unstable the water-in-oil emulsion at this time is, the more easily the oil and water are separated, and the less influence on the safe transportation of the pipeline is. Therefore, the difference of the mass water content is in positive correlation with the influence degree of the additive on the oil transportation emulsifying performance. The difference of the mass water content can be obtained by the formula c 1-a 1-b1, and the difference can be used as one result for determining the emulsifying performance of the additive.
In the experimental process in the flow, the preparation temperature and the measurement temperature are the same and are the annual average ground temperature of the pipeline.
To sum up, the embodiment of the present application provides an additive emulsification performance determining method, which includes obtaining a mass water content of an upper oil of a first additive oil containing a water-in-oil emulsion after standing and a mass water content of an upper oil of a second non-additive oil containing the water-in-oil emulsion, determining an influence degree of an additive on a pipe oil transportation emulsification performance according to a difference of the mass water contents, wherein the difference of the mass water contents is positively correlated with the influence degree of the additive on the pipe oil transportation emulsification performance, and comparing the difference through a specific numerical value of an accurate mass water content to obtain a more accurate data result. The method solves the problem of lower accuracy of a method for determining the oil emulsification characteristic of the additive by visually observing the oil-water separation degree in the related technology, and achieves the effect of improving the accuracy of determining the emulsification performance of the additive.
According to the above embodiment, an experimental process is illustrated, and a specific process is shown in fig. 3:
And 304, obtaining two parts of pipe transportation oil with the same mass and weight, namely first additive oil and second additive-free oil, wherein an antiwear agent with the concentration of 150 million parts is added into one part of the additive-free oil to form the first additive oil.
And 305, adding deionized water into the second unblended oil and the first added oil according to the proportion that the volume water content is 1% at the temperature of 20 ℃.
And step 306, stirring the first additive oil added with 1% of deionized water and the second non-additive oil by using a stirrer to emulsify, wherein the stirring speed is 1800 rpm, and the stirring time is 5 min. A first additivated oil comprising a water-in-oil emulsion and a second unadditized oil comprising a water-in-oil emulsion are obtained.
The first oil-in-water emulsion-containing water droplets have a particle size value of 24 μm and the second non-oil-in-water emulsion-containing water droplets have a particle size value of 28 μm.
The oil-water separation state of the first additivated oil containing a water-in-oil emulsion and the second unadditized oil containing a water-in-oil emulsion after standing was observed.
3091, analyzing the above measurement results to determine the influence of the antiwear agent on the emulsifying performance of the pipe oil transportation.
The particle size of water drops of the first additive oil containing the water-in-oil emulsion is smaller than that of the second non-additive oil containing the water-in-oil emulsion, so that compared with the second non-additive oil containing the water-in-oil emulsion, the first additive oil formed by adding the antiwear agent at a concentration of 150 million parts is more unfavorable for oil-water separation, has a larger influence on the safe transportation of a pipeline and has a larger influence on the safe transportation of the pipeline.
Compared with the second unblended oil containing the water-in-oil emulsion, the first additivated oil containing the water-in-oil emulsion has higher turbidity of the stratified oil phase and is more stable, namely the first additivated oil formed by adding the antiwear agent with the concentration of 150 million parts has larger influence on the safe transportation of pipelines;
the mass water content of the first additive oil containing the water-in-oil emulsion is greater than that of the second non-additive oil containing the water-in-oil emulsion, namely more water is mixed in the first additive oil formed by adding 150 million parts 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 greater;
in conclusion, the addition of the antiwear agent at a concentration of 150 parts per million promotes the emulsification of the pipeline oil, thereby affecting the safety of pipeline transportation, so that the addition of the antiwear agent to the pipeline oil and pipeline transportation is not recommended.
Referring to fig. 4, a schematic structural diagram of an additive emulsifying performance determining apparatus provided in an embodiment of the present application is shown, where the additive emulsifying performance determining apparatus includes:
the obtaining module 401 is configured to obtain two portions of unblended oil, where the two portions of unblended oil include a first unblended oil and a second unblended oil.
The proportioning module 402 is configured to add a preset amount of additive to the first unblended oil to form a first blended oil, and add a specified amount of deionized water to the first blended oil and the second unblended oil.
And an emulsifying module 403, configured to emulsify the first dosed oil and the second unformulated oil with a specified amount of deionized water, to obtain a first dosed oil containing a water-in-oil emulsion and a second unformulated oil containing a water-in-oil emulsion.
A resting module 404 for resting a first dosed oil comprising a water-in-oil emulsion and a second unapplied oil comprising a water-in-oil emulsion for a preset length of time.
And a mass water content obtaining module 405, configured to obtain a mass water content of the upper oil layer of the first dosed oil containing the water-in-oil emulsion after standing and a mass water content of the upper oil layer of the second non-dosed oil containing the water-in-oil emulsion.
The first determining module 406 is configured to determine a degree of influence of the additive on the emulsification performance of the pipe oil transportation according to a difference between the mass water content and the influence of the additive on the emulsification performance of the pipe oil transportation, where the difference between the mass water content and the influence of the additive on the emulsification performance of the pipe oil transportation is directly related, and the difference between the mass water content satisfies c1 ═ a1-b1, where c1 is the difference between 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 performance determining apparatus 400 further includes:
a water droplet size value obtaining module 407, configured to obtain a water droplet size value of a first additive oil containing a water-in-oil emulsion and a water droplet size value of a second non-additive oil containing a water-in-oil emulsion.
A second determining module 408, configured to determine the influence degree of the additive on the emulsification performance of the pipeline oil transportation according to the difference between the particle size values of the water droplets, where the difference between the particle size values of the water droplets is inversely related to the influence degree of the additive on the emulsification performance of the pipeline oil transportation, and the difference between the particle size values of the water droplets satisfies c2 ═ a2-b2, where c2 is the difference between the particle size values of the water droplets, a2 is the particle size value of the water droplet of the upper layer oil containing the first additive oil of the water-in-oil emulsion, and b2 is the particle size value of the upper layer oil containing the second non-additive oil of the water-in-oil emulsion.
Optionally, the additive emulsifying performance determining apparatus 400 further includes:
the screening module 409 is configured to add additives with different dosages into a plurality of portions of unblended oil with the same dosage to form a plurality of portions of unblended oil with different dosages, where the unblended oil is oil obtained by mixing oil and deionized water, measure interfacial tension between the oil and the deionized water in the unblended oil with different dosages, and determine the dosage of the additive in the unblended oil with the highest interfacial tension value as a preset dosage.
To sum up, this application embodiment provides an additive emulsifying property determining device, through the quality moisture content of the upper oil that contains the first oiling of water-in-oil emulsion after obtaining the stand with the quality moisture content of the upper oil that contains the second oiling of water-in-oil emulsion, and confirm the influence degree of adding the agent to defeated oil emulsifying property according to the difference of quality moisture content, the difference of quality moisture content is positive-phase relation with the influence degree of adding the agent to defeated oil emulsifying property, carry out the difference through the concrete numerical value of accurate quality moisture content and compare, in order to obtain more accurate data result. The method solves the problem of lower accuracy of a method for determining the oil emulsification characteristic of the additive by visually observing the oil-water separation degree in the related technology, and achieves the effect of improving the accuracy of determining the emulsification performance of the additive.
The above description is intended to be exemplary only, and not to limit the present application, and any modifications, equivalents, improvements, etc. made within the spirit and scope of the present application are intended to be included therein.
Claims (10)
1. An additive emulsification performance determination method for determining an effect of an additive on a pipeline oil emulsification performance, the method comprising:
obtaining two parts of unblended oil, wherein the two parts of unblended oil comprise first unblended oil and second unblended oil;
adding a preset dosage of the additive to the first unblended oil to form a first additivated oil;
adding a specified amount of deionized water into the first additivated oil and the second unadditized oil;
emulsifying the first dosed oil and the second unblended oil with the specified amount of deionized water to obtain a first dosed oil containing a water-in-oil emulsion and a second unblended oil containing a water-in-oil emulsion;
allowing the first dosed oil comprising a water-in-oil emulsion and the second unapplied oil comprising a water-in-oil emulsion to stand for a preset period of time;
obtaining the mass water content of the upper oil of first additive oil containing water-in-oil emulsion after standing and the mass water content of the upper oil of second non-additive oil containing water-in-oil emulsion;
determining the influence degree of the additive on the emulsification performance of the oil transportation pipe according to the difference of the mass water content, wherein the difference of the mass water content is in positive correlation with the influence degree of the additive on the emulsification performance of the oil transportation pipe, and the difference of the mass water content satisfies c1 ═ a1-b1, 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 additive-free oil containing the water-in-oil emulsion.
2. The method of claim 1, further comprising:
obtaining a particle size value of a water droplet of the first additivated oil containing water-in-oil emulsion and a particle size value of a water droplet of the second unadditivated oil containing water-in-oil emulsion;
determining the influence degree of the additive on the emulsification performance of the oil transportation pipe according to the difference of the water drop particle size values, wherein the difference of the water drop particle size values is in negative correlation with the influence degree of the additive on the emulsification performance of the oil transportation pipe, and the difference of the water drop particle size values satisfies the condition that c2 is a2-b2, wherein c2 is the difference of the water drop particle size values, a2 is the water drop particle size value of the upper layer oil of the first additive oil containing the water-in-oil emulsion, and b2 is the water drop particle size value of the upper layer oil of the second non-additive oil containing the water-in-oil emulsion.
3. The method of claim 1, wherein prior to adding the predetermined amount of the additive to the first unblended oil, the method further comprises:
adding additives with different dosages into a plurality of portions of unblended oil with the same dosage to form a plurality of portions of unblended oil with different dosages, wherein the unblended oil is oil obtained by mixing oil and deionized water;
measuring the interfacial tension of oil and deionized water in the additive oil under different dosages;
and determining the dosage of the additive in the additized oil with the highest interfacial tension value as the preset dosage.
4. The method of claim 1, wherein adding a specified amount of deionized water to the first additized oil and the second unapplied oil comprises:
and adding the deionized water into the first additive oil and the second non-additive oil according to the proportion that the volume water content is 1-3%.
5. The method of claim 1, wherein said emulsifying the first additized oil and the second unadditized oil to which the specified amount of deionized water is added comprises:
and stirring the first additive oil and the second additive-free oil added with the specified amount of deionized water by using a stirrer for emulsification, wherein the stirring speed is 1500-2000 r/min, and the stirring time is 5 min.
6. The method of claims 3-5, wherein the deionized water has a temperature of 20 ℃ and a resistivity of >15M Ω -cm.
7. The method of claim 3, wherein adding different dosages of the additive to a plurality of portions of the same dosage of unblended oil to form a plurality of portions of different dosages of added oil comprises:
the additive was added in increments of 50 parts per million in a concentration range of 0 to 1000 parts per million to a plurality of portions of unblended oil of the same dosage.
8. An additive emulsification performance determining apparatus for determining an effect of an additive on a pipeline oil emulsification performance, 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 unblended oil, and the two parts of unblended oil comprise first unblended oil and second unblended oil;
the proportioning module is used for adding a preset dosage of the additive into the first non-dosed oil to form first dosed oil, and adding a specified amount of deionized water into the first dosed oil and the second non-dosed oil;
the emulsification module is used for emulsifying the first additive oil added with the specified amount of deionized water and the second non-additive oil to obtain first additive oil containing water-in-oil emulsion and second non-additive oil containing water-in-oil emulsion;
a standing module for standing the first dosed oil containing water-in-oil emulsion and the second unapplied oil containing water-in-oil emulsion for a preset time;
the mass water content acquisition module is used for acquiring the mass water content of the upper oil of first additive oil containing water-in-oil emulsion and the mass water content of the upper oil of second non-additive oil containing water-in-oil emulsion after standing;
the first determination module is used for determining the influence degree of the additive on the emulsification performance of the oil transportation pipe according to the difference of the mass water content, the difference of the mass water content is in positive correlation with the influence degree of the additive on the emulsification performance of the oil transportation pipe, and the difference of the mass water content satisfies c1 ═ a1-b1, 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.
9. The apparatus of claim 8, further comprising:
a water droplet size value obtaining module for obtaining a water droplet size value of the first dosed oil containing water-in-oil emulsion and a water droplet size value of the second non-dosed oil containing water-in-oil emulsion;
a second determining module, configured to determine a degree of influence of the additive on the emulsification performance of the oil transportation pipe according to a difference between water droplet particle size values, where the difference between the water droplet particle size values is inversely related to the degree of influence of the additive on the emulsification performance of the oil transportation pipe, and the difference between the water droplet particle size values satisfies c2 ═ a2-b2, where c2 is the difference between the water droplet particle size values, 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.
10. The apparatus of claim 8, further comprising:
the screening module is used for adding additives with different dosages into a plurality of portions of unblended oil with the same dosage to form a plurality of portions of unblended oil with different dosages, wherein the unblended oil is oil obtained by mixing oil and deionized water;
measuring the interfacial tension of oil and deionized water in the additive oil under different dosages;
and determining the dosage of the additive in the additized oil with the highest interfacial tension value as the preset dosage.
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