Method and system for evaluating emulsification stability of high pour-point oil

Abstract

The embodiment of the invention provides a method and system for evaluating the emulsification stability of high pour-point oil, and the method comprises the steps: carrying out the constant temperature of an initial emulsion according to a preset temperature, the initial emulsion containing the high pour-point oil and a target surfactant; when the constant temperature reaches a preset duration, controlling the initial emulsion to be mixed under a rotation condition to obtain a target emulsion; according to a preset time interval, obtaining an average particle size of a dispersed phase in the target emulsion and a stability index of the target emulsion to obtain a plurality of average particle sizes and a plurality of stability indexes; and evaluating the stability of the target emulsion according to the plurality of average particle sizes and the plurality of stability indexes. According to the technical scheme provided by the embodiment of the invention, the emulsification stability of the high pour-point oil can be accurately evaluated, so that the screening of the surfactant can be guided.

Description

Technical Field

[0001] The present application relates to the field of emulsification technology, and in particular to a method and system for evaluating the emulsification stability of high-gelatin oil. Background Art

[0002] The high-condensate oil geological reserves of Liaohe Oilfield reach 217 million tons, and it has entered the middle and late stages of development. In the process of exploitation, chemical flooding is an important development method to improve the recovery rate. With the continuous deepening of research and field effect analysis, it is gradually recognized that emulsification has become one of the important mechanisms for chemical flooding to improve the recovery rate. Academician Yuan Shiyi and others established a heterogeneous positive rhythm reservoir model and believed that the emulsification effect in ternary composite flooding can improve the oil recovery efficiency by 3.17%; Daqing Oilfield conducted a large number of physical model core flooding and found that after the injection of ASP plugs, the core outlet effluent was emulsified in the core experiment, and the recovery rate was 5%-6% higher than that of the non-emulsified one. However, emulsification is a double-edged sword. Although it improves the oil recovery efficiency of the reservoir, it increases the difficulty of demulsification and dehydration of crude oil, especially for the severely emulsified produced fluid, which has a complex emulsification state and is extremely difficult to handle. Therefore, the emulsification ability and stability design in the formulation design have become the key research issues.

[0003] At present, the methods for evaluating the stability of emulsions include the method of calculating the stability by static observation of water absorption readings and the method of observing the instantaneous particle size distribution under a microscope. These methods mainly rely on naked eye observation readings and are more adaptable to thin oil reservoirs. However, due to the special properties of high-condensation oil products, which are characterized by "high freezing point, high wax content, and high wax precipitation temperature", the above methods are greatly affected by temperature changes, resulting in wax precipitation and wall hanging, which affect the observation readings. In addition, the difference in readings by personnel is also an important factor affecting the stability evaluation, which leads to the inability to correctly evaluate the emulsification stability of surfactants and affects the development of chemical flooding formulas.

[0004] Based on this, how to provide a method that can accurately evaluate the emulsification stability of high-gelatin oil is a technical problem that needs to be solved urgently. Summary of the invention

[0005] The embodiments of the present application provide a method and system for evaluating the emulsification stability of high-gelatin oil. Based on the technical solution provided in the present application, the emulsification stability of high-gelatin oil can be accurately evaluated, which is helpful to guide technical personnel to screen surfactants.

[0006] Other features and advantages of the present application will become apparent from the following detailed description, or may be learned in part by the practice of the present application.

[0007] According to the first aspect of an embodiment of the present application, a method for evaluating the emulsification stability of a high-gelatin oil is provided, the method comprising: maintaining a constant temperature of an initial emulsion at a preset temperature, the initial emulsion containing a high-gelatin oil and a target surfactant; when the constant temperature reaches a preset time length, controlling the initial emulsion to be mixed under a rotating condition to obtain a target emulsion; obtaining the average particle size of the dispersed phase in the target emulsion and the stability index of the target emulsion at preset time intervals to obtain multiple average particle sizes and multiple stability indices; and evaluating the stability of the target emulsion according to the multiple average particle sizes and the multiple stability indices.

[0008] In some embodiments of the present application, based on the aforementioned scheme, the method further includes: collecting high-gelatin oil and a pre-configured target surfactant; mixing the high-gelatin oil and the target surfactant in a preset ratio to obtain an initial emulsion.

[0009] In some embodiments of the present application, based on the aforementioned scheme, the mixing of the initial emulsion at a preset speed to obtain a target emulsion includes: within a first time period, controlling the initial emulsion to be mixed at a preset speed to obtain a target emulsion.

[0010] In some embodiments of the present application, based on the aforementioned scheme, the obtaining of the average particle size of the dispersed phase in the target emulsion and the stability index of the target emulsion at preset time intervals includes: obtaining the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals; determining the average particle size of the dispersed phase based on the refractive index, and determining the stability index of the target emulsion based on the transmitted light intensity.

[0011] In some embodiments of the present application, based on the aforementioned scheme, the refractive index of the dispersed phase and the continuous phase in the target emulsion, and the transmitted light intensity of the continuous phase are obtained at preset time intervals, including: maintaining a constant temperature of the detection system at the preset temperature; when the constant temperature reaches a second time period, using the detection system to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion, and the transmitted light intensity of the continuous phase at preset time intervals.

[0012] In some embodiments of the present application, based on the aforementioned scheme, determining the stability index of the target emulsion based on the transmitted light intensity includes: obtaining the volume concentration of the target surfactant in the target emulsion; and determining the stability index of the target emulsion based on the volume concentration and the transmitted light intensity.

[0013] In some embodiments of the present application, based on the aforementioned scheme, evaluating the stability of the target emulsion according to the multiple average particle sizes and the multiple stability indices includes: respectively drawing curves for the multiple average particle sizes and the multiple stability indices to obtain an average particle size curve and a stability index curve; and evaluating the stability of the target emulsion according to the average particle size curve and the stability index curve.

[0014] According to a second aspect of the embodiment of the present application, a system for evaluating the emulsification stability of high-gelatin oil is provided, the system comprising: a constant temperature system, a high-speed shear instrument, a detection system, and a computing system; the constant temperature system is used to maintain a constant temperature of an initial emulsion according to a preset temperature, wherein the initial emulsion contains a high-gelatin oil and a target surfactant; the high-speed shear instrument is used to control the initial emulsion to be mixed under a rotating condition to obtain a target emulsion when the constant temperature reaches a preset time;

[0015] In some embodiments of the present application, based on the aforementioned scheme, the detection system includes a refractometer and a stability analyzer; the refractometer is used to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion at preset time intervals; the stability analyzer is used to obtain the transmitted light intensity of the continuous phase at preset time intervals.

[0016] In some embodiments of the present application, based on the aforementioned solution, the detection system includes a constant temperature device, and the constant temperature device is used to maintain a constant temperature of the detection system according to the preset temperature.

[0017] The technical solution of the present application is to firstly keep the initial emulsion constant at a preset temperature, wherein the initial emulsion contains a high-gelatinization oil and a target surfactant; then, when the constant temperature reaches a preset time, the initial emulsion is controlled to be mixed under a rotating condition to obtain a target emulsion; then, the average particle size of the dispersed phase in the target emulsion and the stability index of the target emulsion are obtained at preset time intervals to obtain multiple average particle sizes and multiple stability indexes; finally, the stability of the target emulsion is evaluated according to the multiple average particle sizes and the multiple stability indexes. It can be understood that the technical solution of the present application does not rely on manual readings to evaluate the emulsification stability of high-gelatinization oil, and the technical solution of the present application can avoid the influence of the physical properties of "high freezing point, high wax content, and high wax precipitation temperature" of high-gelatinization oil in the process of evaluating the emulsification stability of high-gelatinization oil, so as to accurately evaluate the emulsification stability of high-gelatinization oil, and then guide relevant technical personnel to screen surfactants.

[0018] It should be understood that the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings herein are incorporated into the specification and constitute a part of the specification, showing embodiments consistent with the present application, and together with the specification, are used to explain the principles of the present application. Obviously, the drawings described below are only some embodiments of the present application, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. In the drawings:

[0020] Figure 1 A schematic flow chart of a method for evaluating the emulsification stability of high-condensate oil according to an embodiment of the present application is shown;

[0021] Figure 2 A detailed flow chart of obtaining the average particle size of the dispersed phase in the target emulsion and the stability index of the target emulsion according to a preset time interval according to one embodiment of the present application is shown;

[0022] Figure 3 A schematic diagram of a backscattering spectrum according to an embodiment of the present application is shown;

[0023] Figure 4 A schematic diagram of a backscattering spectrum diagram according to an embodiment of the present application is shown;

[0024] Figure 5 A schematic diagram of a backscattering spectrum according to an embodiment of the present application is shown;

[0025] Figure 6 A schematic diagram of an average particle size curve according to an embodiment of the present application is shown;

[0026] Figure 7 A schematic diagram of the architecture of a system for evaluating the emulsification stability of high-gelatin oil according to an embodiment of the present application is shown. DETAILED DESCRIPTION

[0027] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this application will be more comprehensive and complete and fully convey the concept of the example embodiments to those skilled in the art.

[0028] In addition, described feature, structure or characteristic can be combined in one or more embodiments in any suitable manner. In the following description, many specific details are provided to provide a full understanding of the embodiments of the present application. However, those skilled in the art will appreciate that the technical scheme of the present application can be put into practice without one or more of the specific details, or other methods, components, devices, steps, etc. can be adopted. In other cases, known methods, devices, realizations or operations are not shown or described in detail to avoid blurring the various aspects of the application.

[0029] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities may be implemented in software form, or in one or more hardware modules or integrated circuits, or in different networks and / or processor devices and / or microcontroller devices.

[0030] The flowcharts shown in the accompanying drawings are only exemplary and do not necessarily include all the contents and operations / steps, nor must they be executed in the order described. For example, some operations / steps can be decomposed, and some operations / steps can be combined or partially combined, so the actual execution order may change according to actual conditions.

[0031] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the objects used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those shown or described.

[0032] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution in the embodiment of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiment of the present invention. Obviously, the described embodiment is only a part of the embodiment of the present invention, not all the embodiments. Based on the embodiment of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] According to a first aspect of an embodiment of the present application, a method for evaluating the emulsification stability of high-gelatin oil is provided.

[0034] Some implementation methods of the evaluation method of the present application will be described in detail below in conjunction with the accompanying drawings. In the absence of conflict, the following embodiments and features in the embodiments can be combined with each other.

[0035] In order to enable those skilled in the art to better understand the technical solution of the present application, the relevant properties of high pour point oil will be described below in conjunction with Table 1.

[0036] See Table 1 below, which shows the relevant physical properties of high-pour point oil in some well numbers of Shen 84 block. Shen 84 block is a typical block of Liaohe Oilfield. Combined with the data presented in Table 1, it is not difficult to understand that the wax content of its oil products is concentrated between 36.2-39.6%, the freezing point is concentrated between 46-49°C, and the wax precipitation point is concentrated between 62.4-68.2°C. It is a typical high-pour point oil reservoir.

[0037] Because of the physical properties of high freezing point, high wax content and high wax precipitation temperature of high freezing point oil, if the traditional evaluation method of crude oil emulsification stability is still used to evaluate the emulsification stability of high freezing point oil, the traditional evaluation method will be greatly affected by temperature changes, resulting in wax precipitation, wall hanging and other phenomena during the evaluation process, resulting in inaccurate evaluation results. Therefore, the main purpose of this application is to provide an evaluation method that can overcome the "three highs" characteristics of high freezing point oil and can accurately evaluate the emulsification stability of high freezing point oil.

[0038]

[0039]

[0040] Table 1

[0041] See also Figure 1 , shows a schematic flow chart of a method for evaluating the emulsification stability of high-gelatin oil according to an embodiment of the present application, specifically including S110 to S140.

[0042] S110, maintaining a constant temperature of the initial emulsion according to a preset temperature, wherein the initial emulsion contains a high-gelling oil and a target surfactant.

[0043] In some embodiments, a constant temperature system may be used to maintain a constant temperature for the initial emulsion, wherein the constant temperature system may be required to have a temperature range of room temperature to 90° C., and the temperature change during the constant temperature process may not exceed 0.5° C.

[0044] In some embodiments, the preset temperature should be consistent with the formation temperature where the collected high-pour point oil is located (ie, the reservoir temperature). For example, if the reservoir temperature of the collected high-pour point oil is 70°C, the preset temperature can be set to 70°C.

[0045] It should be noted that in the process of maintaining a constant temperature for the initial emulsion, a sealed constant temperature should be maintained to avoid external interference and increase evaluation errors.

[0046] In this embodiment, the initial emulsion is kept at a constant temperature to a preset temperature, so that the initial emulsion can be fully heated, thereby facilitating an emulsification reaction between the high-gelatinizing oil and the target surfactant.

[0047] In some embodiments, the initial emulsion may be obtained according to the following steps S10 to S20.

[0048] S10, collecting high-gelatin oil and pre-configured target surfactant.

[0049] It is understandable that the experimenter needs to evaluate the emulsification performance of a certain surfactant, and then the surfactant can be selected as the target surfactant. Thus, the configured target surfactant can be used as an emulsifier to emulsify high-gelatin oil.

[0050] S20, mixing the high-gelatin oil and the target surfactant according to a preset ratio to obtain an initial emulsion.

[0051] It is understood that different mixing ratios of surfactant and high-gelatin oil will have different effects on the emulsification stability of high-gelatin oil, so the emulsification properties of surfactants in different ratios can be studied. Among them, the preset ratio is the volume ratio of the target surfactant and the high-gelatin oil.

[0052] Continue to see Figure 1 , S120, when the constant temperature reaches a preset time, the initial emulsion is controlled to be mixed under a rotation condition to obtain a target emulsion.

[0053] In some implementations, the preset duration can be set to 1.5, 2h, 2.5h, etc., preferably set to 2h.

[0054] In some embodiments, a high-speed shearing device may be used to control the mixing of the initial emulsion under rotational conditions to obtain a target emulsion.

[0055] In some embodiments, the controlling the initial emulsion to be mixed under a rotating condition to obtain the target emulsion may be controlling the initial emulsion to be mixed at a preset speed within a first time period to obtain the target emulsion. The first time period may be 1 min, 2 min, 3 min, etc., preferably 1 min, and the preset speed may be 10000 r / min, 11000 r / min, 12000 r / min, etc., preferably 11000 r / min.

[0056] In this embodiment, the target surfactant and the high-gelatinizing oil are mixed under rotation conditions, so that the target surfactant and the high-gelatinizing oil can be more fully emulsified, thereby forming a more stable target emulsion.

[0057] Continue to see Figure 1 , S130, obtaining an average particle size of the dispersed phase in the target emulsion and a stability index of the target emulsion at preset time intervals to obtain multiple average particle sizes and multiple stability indexes.

[0058] It should be noted that in the target emulsion formed by sufficient emulsification reaction between the target surfactant and the high-gelatinizing oil, since the target surfactant disperses the high-gelatinizing oil, the dispersed phase finally obtained is formed by the dispersion of the high-gelatinizing oil, and the continuous phase is the target surfactant.

[0059] It should also be noted that the stability index obtained each time can reflect the stability of the target emulsion at the current moment, that is, it can be understood as the instantaneous stability of the target emulsion, but a single stability index cannot reflect the stability of the target emulsion. Multiple stability indices are needed to evaluate the stability of the target emulsion as a whole.

[0060] In some embodiments, the preset time interval can be set to 1 minute, 2 minutes, 3 minutes, etc., preferably 1 minute.

[0061] In some embodiments, the specific implementation of obtaining the average particle size of the dispersed phase in the target emulsion and the stability index of the target emulsion at preset time intervals to obtain multiple average particle sizes and multiple stability indexes can be as follows: Figure 2 The steps shown are executed, specifically including S131 to S132.

[0062] S131, obtaining the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals.

[0063] A preferred implementation manner may be to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at a time interval of 1 time / min within 2 hours.

[0064] In some embodiments, the specific implementation of acquiring the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals can be performed according to the following S1311 to S1312.

[0065] S1311, maintaining a constant temperature of the detection system according to the preset temperature.

[0066] In some embodiments, the detection system includes a stability analyzer and a refractometer.

[0067] It should be noted that the temperature for isothermalizing the detection system is consistent with the temperature for isothermalizing the initial emulsion, that is, consistent with the reservoir temperature of the high-condensation oil.

[0068] S1312, when the constant temperature reaches the second time period, using the detection system to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals.

[0069] In some embodiments, the second duration may be 30 minutes, 40 minutes, 50 minutes, etc., and is preferably set to 30 minutes.

[0070] In some embodiments, a refractometer can be used to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion at preset time intervals; a stability analyzer can be used to obtain the transmitted light intensity of the continuous phase at preset time intervals. The stability analyzer includes a pulsed near-infrared light source (λ=880nm) and a synchronous sensor.

[0071] It should be noted that in the present application, by subjecting the initial emulsion and the detection system to constant temperature treatment, the characteristics of high coagulation point oil, such as "high coagulation point, high wax content and high wax precipitation temperature", which are greatly affected by temperature, can be effectively avoided, thereby improving the accuracy of evaluating the emulsification stability of high coagulation oil.

[0072] Continue to see Figure 2 , S132, determining the average particle size of the dispersed phase based on the refractive index, and determining the stability index of the target emulsion based on the transmitted light intensity.

[0073] It should be noted that each time the refractometer measures the target emulsion, it will obtain the refractive index of the continuous phase and the refractive index of the dispersed phase of the target emulsion, so that the average particle size of the dispersed phase in the target emulsion at the current moment can be automatically calculated based on the refractive index of the continuous phase and the refractive index of the dispersed phase.

[0074] In some embodiments, the specific implementation of determining the stability index of the target emulsion based on the transmitted light intensity can be performed as follows S1321 to S1322.

[0075] S1321, obtaining the volume concentration of the target surfactant in the target emulsion.

[0076] In some embodiments, the volume concentration can be based on the initial emulsion configured in S20.

[0077] The preset ratio is used to determine the concentration. For example, if the high-gelatin oil and the target surfactant are mixed at a volume ratio of 3:7, the volume concentration of the target surfactant in the obtained target emulsion is 0.3.

[0078] S1322, determining a stability index of the target emulsion based on the volume concentration and the transmitted light intensity.

[0079] In some embodiments, a stability analyzer is used to detect the transmitted light intensity of the continuous phase in the target emulsion at preset time intervals, so that the stability index of the target emulsion can be automatically calculated based on the volume concentration of the target surfactant and the detected transmitted light intensity of the continuous phase.

[0080] Continue to see Figure 1 , S140, evaluating the stability of the target emulsion according to the multiple average particle sizes and the multiple stability indexes.

[0081] In some embodiments, the specific implementation of evaluating the stability of the target emulsion according to the multiple average particle sizes and the multiple stability indexes can be performed according to the following S141 to S142.

[0082] S141, respectively plotting the multiple average particle sizes and the multiple stability indexes to obtain an average particle size curve and a stability index curve.

[0083] It can be understood that, since the refractive indices of the continuous phase and the dispersed phase in the target emulsion are detected at preset time intervals, the average particle sizes of multiple dispersed phases can correspond; similarly, since the transmitted light intensity of the continuous phase of the target emulsion is detected at preset time intervals, the stability indexes of multiple target emulsions can correspond.

[0084] Therefore, by plotting all the average particle sizes obtained, an average particle size curve reflecting the change in the average particle size of the dispersed phase of the target emulsion within a certain period of time can be obtained.

[0085] All the obtained stability indexes are plotted to obtain a stability index curve reflecting the stability change of the target emulsion within a certain period of time.

[0086] S142, evaluating the stability of the target emulsion according to the average particle size curve and the stability index curve.

[0087] It should be noted that the conclusions obtained through the technical solution of the present application can guide relevant technical personnel to screen surfactants. Generally speaking, if the emulsion formed after the surfactant emulsifies the high-gelatin oil is more stable, it can be more conducive to the flow of the high-gelatin oil, and thus more conducive to the exploitation of the high-gelatin oil. However, the more stable the emulsion formed also means that it is more difficult to demulsify and dehydrate the high-gelatin oil in the future. Therefore, it can be understood that the surfactant used in chemical flooding is equivalent to a double-edged sword, with advantages and disadvantages, and relevant technical personnel need to screen the most suitable surfactant for the exploitation of high-gelatin oil according to actual needs.

[0088] Based on this, the technical solution of the present application can obtain average particle size curves and stability index curves for different surfactants, thereby providing accurate reference data for relevant technical personnel to screen surfactants. For example, if it is necessary to be more conducive to the exploitation of high-condensation oil, a surfactant with a higher emulsification stability can be selected; if it is necessary to facilitate demulsification and dehydration in the later stage, a surfactant with a lower emulsification stability can be selected.

[0089] In order to enable those skilled in the art to better understand the technical solution of the present application, Figures 3 to 6 Some embodiments of the present application are described by way of example, specifically including the following S1 to S5.

[0090] S1, first prepare the target surfactant;

[0091] S2, mixing the target surfactant with the degassed crude oil (high pour point oil) of the target oil field well 64-18 in three ratios of 5:5; 3:7; and 7:3 to obtain three initial emulsions;

[0092] S3, the three initial emulsions were placed in a sealed container at 70°C for 2 h;

[0093] S4, using a high-speed shearing apparatus at a rotation speed of 11000 r / min, the three initial emulsions were mixed for 1 min respectively to obtain three target emulsions;

[0094] S5, after setting the temperature of the detection system to 70°C for 30 minutes, within the detection time of 2 hours, the three target emulsions are scanned and measured at a detection frequency of 1 time / min, so as to obtain the average particle size curves and stability index curves of the three emulsions.

[0095] When the stability analyzer is used to scan and measure the three target emulsions, the backscattering spectra obtained are as follows: Figures 3 to 5 ,in, Figure 3 The backscattering spectrum of the target emulsion obtained by mixing in a ratio of 5:5; Figure 4 The backscattering spectrum of the target emulsion obtained by mixing in a ratio of 3:7;

[0096] Figure 5 The backscattering spectrum of the target emulsion obtained by mixing in a ratio of 7:3. Based on the backscattering spectrum, the transmitted light intensity of the continuous phase in the target emulsion can be obtained, and finally the stability index can be obtained based on the transmitted light intensity and the volume concentration of the surfactant.

[0097] After using a refractometer to detect the refractive index of the continuous phase and the dispersed phase in the three target emulsions, the average particle size curves of the three target emulsions are obtained as follows: Figure 6 shown.

[0098] According to a second aspect of an embodiment of the present application, a system for evaluating the emulsification stability of high-gelatin oil is provided.

[0099] See also Figure 7 , showing a schematic diagram of the architecture of a system for evaluating the emulsification stability of high-gelatin oil according to an embodiment of the present application.

[0100] In some embodiments, the evaluation system for the emulsification stability of high-gelatin oil includes a constant temperature system 100 , a high-speed shear instrument 200 , a detection system 300 , and a computing system 400 .

[0101] The constant temperature system 100 is used to keep the initial emulsion constant temperature according to a preset temperature, wherein the initial emulsion contains a high-gelatinization oil and a target surfactant. It can be understood that the constant temperature system 100 enables the target surfactant and the high-gelatinization oil to undergo a sufficient emulsification reaction, thereby facilitating the accuracy of the evaluation of the stability of the high-gelatinization oil emulsion.

[0102] In this embodiment, the relevant parameter settings may refer to the settings in the above step S110, and this application will not elaborate on them here.

[0103] Continue to see Figure 7 , wherein the high-speed shearing instrument 200 is used to control the initial emulsion to be mixed under a rotating condition to obtain a target emulsion when the constant temperature reaches a preset time. In this embodiment, the relevant parameter settings can refer to the settings in the above step S120, and this application will not repeat them here.

[0104] Continue to see Figure 7 , wherein the detection system 300 is used to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion, and the transmitted light intensity of the continuous phase at preset time intervals.

[0105] In this embodiment, the relevant parameter settings can refer to the settings in the above-mentioned step S130, and this application will not go into details here.

[0106] In some embodiments, the detection system 300 includes a refractometer 320 and a stability analyzer 310; the refractometer 320 is used to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion at preset time intervals; the stability analyzer 310 is used to obtain the transmitted light intensity of the continuous phase at preset time intervals.

[0107] In some embodiments, the detection system 300 includes a constant temperature device 330, and the constant temperature device 330 is used to maintain a constant temperature of the detection system 300 according to the preset temperature.

[0108] Continue to see Figure 7 , wherein the computing system 400 is used to determine the average particle size of the dispersed phase based on the refractive index, and to determine the stability index of the target emulsion based on the transmitted light intensity. It can be understood that the computing system 400 can output the stability index and the average particle size of the target emulsion, thereby providing relevant reference data for technicians to screen surfactants.

[0109] In the technical solutions provided in some embodiments of the present application, the initial emulsion is first kept at a constant temperature according to a preset temperature, wherein the initial emulsion contains a high-coagulation oil and a target surfactant; when the constant temperature reaches a preset time, the initial emulsion is controlled to be mixed under a rotating condition to obtain a target emulsion; then, the average particle size of the dispersed phase in the target emulsion and the stability index of the target emulsion are obtained at preset time intervals to obtain multiple average particle sizes and multiple stability indexes; finally, the stability of the target emulsion is evaluated according to the multiple average particle sizes and the multiple stability indexes. Through the technical solution of the present application, at least the following technical effects can be achieved:

[0110] 1) It does not rely on manual reading to evaluate the emulsification stability of high-gelatin oil, which can reduce the error of manual reading;

[0111] 2) In the process of evaluating the emulsification stability of high-gelatin oil, the influence of the physical properties of high-gelatin oil, such as "high freezing point, high wax content, and high wax precipitation temperature", can be avoided, so that the emulsification stability of high-gelatin oil can be accurately evaluated, and then the relevant technical personnel can be guided to screen surfactants;

[0112] 3) A method and system for evaluating the emulsion stability of high-gelatin oil was found;

[0113] 4) Compared with the traditional method, this method can effectively overcome the "three highs" characteristics of high-condensation oil and can continuously measure and evaluate the state of the emulsion;

[0114] 5) The technical solution of the present application can objectively reflect the changes and laws of a series of emulsion systems through the average particle size change curve.

[0115] Those skilled in the art will readily appreciate other embodiments of the present application after considering the specification and practicing the embodiments disclosed herein. The present application is intended to cover any variations, uses or adaptations of the present application, which follow the general principles of the present application and include common knowledge or customary techniques in the art that are not disclosed in the present application. It should be understood that the present application is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from the scope thereof. The scope of the present application is limited only by the appended claims.

Claims

1. A method for evaluating the emulsification stability of high-gelatin oil, characterized in that: The method comprises: Keeping the initial emulsion constant temperature according to a preset temperature, wherein the initial emulsion contains a high-gelling oil and a target surfactant; When the constant temperature reaches a preset time, the initial emulsion is controlled to be mixed under a rotation condition to obtain a target emulsion; Obtaining an average particle size of a dispersed phase in the target emulsion and a stability index of the target emulsion at preset time intervals to obtain a plurality of average particle sizes and a plurality of stability indexes; The stability of the target emulsion is evaluated based on the multiple average particle sizes and the multiple stability indexes.

2. The method according to claim 1, characterized in that The method further comprises: Collect high-gelatin oil and pre-formulated target surfactant; The high-gelatin oil and the target surfactant are mixed in a preset ratio to obtain an initial emulsion.

3. The method according to claim 1, characterized in that The initial emulsion is mixed at a preset speed to obtain a target emulsion, comprising: During the first time period, the initial emulsion is controlled to be mixed at a preset rotation speed to obtain a target emulsion.

4. The method according to claim 1, characterized in that: The step of obtaining the average particle size of the dispersed phase in the target emulsion and the stability index of the target emulsion at preset time intervals includes: Acquiring the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals; An average particle size of the dispersed phase is determined based on the refractive index, and a stability index of the target emulsion is determined based on the transmitted light intensity.

5. The method according to claim 4, characterized in that The step of obtaining the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals comprises: Maintaining a constant temperature of the detection system according to the preset temperature; When the constant temperature reaches the second time period, the detection system is used to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals.

6. The method according to claim 4, characterized in that Determining the stability index of the target emulsion based on the transmitted light intensity comprises: Obtaining the volume concentration of a target surfactant in the target emulsion; A stability index of the target emulsion is determined based on the volume concentration and the transmitted light intensity.

7. The method according to claim 1, characterized in that The step of evaluating the stability of the target emulsion according to the multiple average particle sizes and the multiple stability indexes comprises: Plotting the multiple average particle sizes and the multiple stability indexes respectively to obtain an average particle size curve and a stability index curve; The stability of the target emulsion is evaluated based on the average particle size curve and the stability index curve.

8. An evaluation system for the emulsification stability of high-gelatin oil, characterized in that: The system includes: a constant temperature system, a high-speed shearing instrument, a detection system, and a computing system; The constant temperature system is used to keep the initial emulsion at a constant temperature according to a preset temperature, wherein the initial emulsion contains a high-gelling oil and a target surfactant; The high-speed shearing instrument is used to control the initial emulsion to be mixed under a rotation condition to obtain a target emulsion when the constant temperature reaches a preset time; The detection system is used to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion and the transmitted light intensity of the continuous phase at preset time intervals; The computing system is used to determine an average particle size of the dispersed phase based on the refractive index, and to determine a stability index of the target emulsion based on the transmitted light intensity.

9. The system according to claim 8, characterized in that The detection system includes a refractometer and a stability analyzer; The refractometer is used to obtain the refractive index of the dispersed phase and the continuous phase in the target emulsion at preset time intervals; The stability analyzer is used to obtain the transmitted light intensity of the continuous phase at preset time intervals.

10. The system according to claim 8, characterized in that The detection system includes a constant temperature device, and the constant temperature device is used to maintain a constant temperature of the detection system according to the preset temperature.

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