CN-122024915-A - Surfactant compounding system selection method, system and storage medium

CN122024915ACN 122024915 ACN122024915 ACN 122024915ACN-122024915-A

Abstract

The embodiment of the disclosure provides a method and a system for selecting a surfactant compound system and a storage medium, belonging to the technical field of preparation of surfactants. The method comprises the steps of obtaining first parameters of a compound system, wherein the first parameters comprise critical micelle concentration and saturated adsorption concentration, determining second parameters of the compound system based on the first parameters of the compound system, wherein the second parameters comprise interaction parameters among molecules of a mixed micelle layer and interaction parameters among molecules of a mixed adsorption layer, and selecting a target compound system from a plurality of compound systems based on the first parameters and the second parameters of the compound system. The surfactant compound system with synergistic effect, ultralow interfacial tension and excellent temperature resistance can be rapidly screened out by the surfactant compound system selection method provided by the embodiment of the disclosure.

Inventors

SUN HUANQUAN
ZHU YANGWEN
LIU PING
XU TING
WANG YOUQI
ZHANG LI

Assignees

中国石油化工股份有限公司
中国石油化工股份有限公司石油勘探开发研究院

Dates

Publication Date: 20260512
Application Date: 20241111

Claims (12)

1. A method of selecting a surfactant formulation system, the method comprising: Acquiring a first parameter of a compound system, wherein the first parameter comprises critical micelle concentration and saturated adsorption concentration; Determining a second parameter of the compound system based on the first parameter of the compound system, wherein the second parameter comprises an interaction parameter between molecules of a mixed micelle layer and an interaction parameter between molecules of a mixed adsorption layer; And selecting a target compound system from a plurality of compound systems based on the first parameter and the second parameter of the compound system.
2. The selection method according to claim 1, wherein the determining the second parameter of the compounding system based on the first parameter of the compounding system comprises: determining the mole fraction in the mixed micelle layer of the compound system based on the critical micelle concentration of the compound system; And determining interaction parameters among molecules of the mixed micelle layer of the compound system based on the critical micelle concentration of the compound system and the mole fraction of the mixed micelle layer of the compound system.
3. The selection method according to claim 2, characterized in that the mole fraction in the mixed micelle layer of the complex system is determined according to the following formula: , Wherein, the Is the mole fraction of the mixed micelle layer, alpha 1 is the mole content of the components of each compound system, Critical micelle concentration of each compound system, And The component concentrations corresponding to the critical micelle concentration of each compound system are respectively.
4. The selection method according to claim 2, characterized in that the interaction parameters between the mixed micelle layer molecules of the complex system are determined according to the following formula: , Wherein, the Is the interaction parameter among the molecules of the mixed micelle layer, alpha 1 is the component mole content of each compound system, x 1 m is the mole fraction in the mixed micelle layer, Critical micelle concentration of each compound system, And The component concentrations corresponding to the critical micelle concentration of each compound system are respectively.
5. The selection method according to claim 1, wherein the determining the second parameter of the compounding system based on the first parameter of the compounding system comprises: determining the mole fraction in the mixed adsorption layer of the compound system based on the saturated adsorption concentration of the compound system; and determining interaction parameters among molecules of the mixed adsorption layer of the compound system based on the saturated adsorption concentration of the compound system and the mole fraction of the mixed adsorption layer of the compound system.
6. The selection method according to claim 5, wherein the mole fraction in the mixed adsorption layer of the complex system is determined according to the following formula: , Wherein, the Is the mole fraction of the mixed adsorption layer, alpha 1 is the mole content of the components in each compound system, The saturated adsorption concentration of each compound system, And The component concentrations corresponding to the saturated adsorption concentration of each compound system are respectively obtained.
7. The method of claim 5, wherein the interaction parameters between the mixed adsorption layer molecules of the complex system are determined according to the following formula: , Wherein, the Is the interaction parameter between molecules of the mixed adsorption layer, alpha 1 is the component mole content of each compound system, Is the mole fraction in the mixed adsorption layer, The saturated adsorption concentration of each compound system, And The component concentrations corresponding to the saturated adsorption concentration of each compound system are respectively obtained.
8. The selection method according to claim 1, wherein the determining a target compounding system from a plurality of the compounding systems based on the first parameter and the second parameter of the compounding system includes: determining a first compound system interval meeting a synergistic effect condition from a plurality of compound systems based on a second parameter of the compound system; Determining the saturated adsorption quantity of the compound system based on the first parameter of the compound system; Determining a second complex system interval from the first complex system interval based on the first parameter and the saturated adsorption amount of the complex system; Determining the interfacial tension of each compound system in the second compound system interval, and selecting a compound system with the lowest interfacial tension value as a target compound system when the interfacial tension of at least one compound system reaches the ultralow interfacial tension; The synergistic effect condition comprises that the interaction parameter between molecules of the mixed adsorption layer is negative, the difference value of the interaction parameter between molecules of the mixed adsorption layer and the interaction parameter between molecules of the mixed micelle layer is negative, and the absolute value of the difference value of the interaction parameter between molecules of the mixed adsorption layer and the interaction parameter between molecules of the mixed micelle layer is larger than the absolute value of the logarithm of the ratio between the ratio of saturated adsorption concentration of each component and the ratio of micelle concentration of each component.
9. The selection method according to claim 8, wherein the saturated adsorption amount of the complex system is determined according to the following formula: , Wherein, the Saturated adsorption amount, n is molar amount, gamma is critical micelle concentration, c is surfactant concentration, and T is temperature.
10. The selection method according to any one of claims 1 to 9, wherein the components of the compound system comprise anionic surfactant and zwitterionic surfactant, and wherein a plurality of the compound systems comprise compound systems in a plurality of compound ratios, the compound ratio being a molar ratio of anionic surfactant to zwitterionic surfactant.
11. A selection system for a surfactant complex, the selection system comprising: A memory for storing parameter information of a plurality of complex systems, and A processor configured to perform the operations of: Acquiring a first parameter of a compound system, wherein the first parameter comprises critical micelle concentration and saturated adsorption concentration; Determining a second parameter of the compound system based on the first parameter of the compound system, wherein the second parameter comprises an interaction parameter between molecules of a mixed micelle layer and an interaction parameter between molecules of a mixed adsorption layer; And determining a target compound system from a plurality of compound systems based on the first parameter and the second parameter of the compound system.
12. A machine-readable storage medium having stored thereon instructions for causing a machine to perform the selection method of any of the preceding claims 1-10.

Description

Surfactant compounding system selection method, system and storage medium Technical Field The disclosure relates to the technical field of preparation of surfactants, in particular to a method, a system and a storage medium for selecting a surfactant compound system. Background On the basis of conventional primary and secondary oil recovery, tertiary oil recovery is used as an enhanced oil recovery (Enhanced Oil Recovery, EOR) means, so that the recovery rate of crude oil can be greatly improved. The chemical flooding (c eor) has the advantages of low cost, high efficiency, easy implementation and the like, wherein the surfactant flooding has wide application. With the continuous and deep development of oil fields, the development of new oil displacement systems has become a hot trend. In order to develop a surfactant system for efficient oil displacement, a novel surfactant is synthesized, and the surfactant is compounded. The synthesis of the surfactant has the problems of long production period, high operation difficulty, high cost and the like, so the compounding of the surfactant has become the first choice for research. However, the existing method for screening the surfactant complex system still has limitations, and the surfactant complex system with synergistic effect, ultralow interfacial tension and excellent temperature resistance cannot be rapidly screened. Disclosure of Invention The embodiment of the disclosure aims to provide a method, a device, equipment and a storage medium, which aim to quickly screen out a surfactant compound system with a synergistic effect, ultralow interfacial tension and excellent temperature resistance. In order to achieve the above objective, in a first aspect, an embodiment of the present disclosure provides a method for selecting a surfactant complex system, the method comprising obtaining a first parameter of the complex system, the first parameter including a critical micelle concentration and a saturated adsorption concentration, determining a second parameter of the complex system based on the first parameter of the complex system, the second parameter including an interaction parameter between molecules of a mixed micelle layer and an interaction parameter between molecules of a mixed adsorption layer, and selecting a target complex system from a plurality of complex systems based on the first parameter and the second parameter of the complex system. In some embodiments, the second parameter of the complex system is determined based on the first parameter of the complex system, including determining a mole fraction in a mixed micelle layer of the complex system based on a critical micelle concentration of the complex system, and determining an interaction parameter between molecules of the mixed micelle layer of the complex system based on the critical micelle concentration of the complex system and the mole fraction in the mixed micelle layer of the complex system. In some embodiments, the mole fraction in the mixed micelle layer of the compounded system is determined according to the following formula: , wherein, Is the mole fraction of the mixed micelle layer, alpha 1 is the mole content of the components of each compound system,Critical micelle concentration of each compound system,AndThe component concentrations corresponding to the critical micelle concentration of each compound system are respectively. In some embodiments, the interaction parameters between the mixed micelle layer molecules of the complex system are determined according to the following formula: , wherein, Is the interaction parameter among the molecules of the mixed micelle layer, alpha 1 is the component mole content of each compound system, x 1m is the mole fraction in the mixed micelle layer,Critical micelle concentration of each compound system,AndThe component concentrations corresponding to the critical micelle concentration of each compound system are respectively. In some embodiments, determining the second parameter of the composite system based on the first parameter of the composite system includes determining a mole fraction in a mixed adsorption layer of the composite system based on a saturated adsorption concentration of the composite system, and determining an interaction parameter between molecules of the mixed adsorption layer of the composite system based on the saturated adsorption concentration of the composite system and the mole fraction in the mixed adsorption layer of the composite system. In some embodiments, the mole fraction in the mixed adsorption layer of the formulated system is determined according to the following formula: , wherein, Is the mole fraction of the mixed adsorption layer, alpha 1 is the mole content of the components in each compound system,The saturated adsorption concentration of each compound system,AndThe component concentrations corresponding to the saturated adsorption concentration of each compound system are respectively obtained.