THE LOC-FREE SURFACTANTS COMPOSITION AS A GELLING AGENT FOR FRACTURING FLUIDS
Rubrics: 2. CHEMICAL TECHNOLOGY
Authors:
1.
Gubkin Russian State University of Oil and Gas
Russian Federation
Russian Federation
2.
Gubkin Russian State University of Oil and Gas
Russian Federation
Russian Federation
3.
Gubkin Russian State University of Oil and Gas
(Kafedra tehnologii himicheskih veschestv dlya neftyanoy i gazovoy promyshlennosti, Docent)
employee
Moscow, Russian Federation
employee
Moscow, Russian Federation
4.
Gubkin Russian State University of Oil and Gas
Russian Federation
Russian Federation
5.
Gubkin Russian State University of Oil and Gas
6.
National Research University Higher School of Economics
Type:
Article
Pages:
from 73
to 79
Status:
Published
Received:
31.01.2026
Accepted:
31.01.2026
Published:
31.01.2026
Language:
Russian
Keywords:
SURFACTANTS, RHEOLOGY, MICELLIZATION, VISCOELASTIC FLUIDS, HYDRAULIC FRACTURING, VOLATILE ORGANOCHLORIDE COMPOUNDS
Abstract:
The article presents a work on the creation of a new chlorine-free gelling agent based on a mixture of zwitterionic and anionic surfactants for hydraulic fracturing fluids. A zwitterionic surfactant was synthesized based on domestic raw materials - alkylamidodimethylamine oxide (AlADAO). The work presents studies of the properties of surfactant compositions, which are a mixture of zwitterionic AlADAO and anionic surfactant - sulfonol. The purpose of the work is to study the synergistic effect of increasing the rheological properties in aqueous solutions of these surfactants and to substantiate the possibility of their use in hydraulic fracturing technologies. The relevance of these studies is due to the need to develop environmentally friendly industrial reagents for oil and gas production technologies, the production of which does not involve the use of volatile organochloride compounds (VOCs). It is shown that mixtures of AlADAO and sulfonol demonstrate a significant increase in viscosity and stability of rheological characteristics in comparison with aqueous solutions of individual AlADAO. As a result of the studies, the optimal mass ratio of the mixture was established (75% AlADAO: 25% sulfonol), providing maximum values of the effective viscosity of the system. A decrease in the interfacial tension and critical micelle concentration (CMC) in the surfactant mixture was revealed, which confirms the presence of intermolecular interactions between the components. The process of formation of mixed micellar structures of surfactants was analyzed and the existence of regions of different rheological behavior of solutions was confirmed. The assumptions put forward in the work on the formation of mixed micellar structures of AlADAO:sulfonol in the composition under study are confirmed by molecular modeling methods. The results open up prospects for using the developed system in hydraulic fracturing technologies to replace traditional polymer fluids.
The article presents a work on the creation of a new chlorine-free gelling agent based on a mixture of zwitterionic and anionic surfactants for hydraulic fracturing fluids. A zwitterionic surfactant was synthesized based on domestic raw materials - alkylamidodimethylamine oxide (AlADAO). The work presents studies of the properties of surfactant compositions, which are a mixture of zwitterionic AlADAO and anionic surfactant - sulfonol. The purpose of the work is to study the synergistic effect of increasing the rheological properties in aqueous solutions of these surfactants and to substantiate the possibility of their use in hydraulic fracturing technologies. The relevance of these studies is due to the need to develop environmentally friendly industrial reagents for oil and gas production technologies, the production of which does not involve the use of volatile organochloride compounds (VOCs). It is shown that mixtures of AlADAO and sulfonol demonstrate a significant increase in viscosity and stability of rheological characteristics in comparison with aqueous solutions of individual AlADAO. As a result of the studies, the optimal mass ratio of the mixture was established (75% AlADAO: 25% sulfonol), providing maximum values of the effective viscosity of the system. A decrease in the interfacial tension and critical micelle concentration (CMC) in the surfactant mixture was revealed, which confirms the presence of intermolecular interactions between the components. The process of formation of mixed micellar structures of surfactants was analyzed and the existence of regions of different rheological behavior of solutions was confirmed. The assumptions put forward in the work on the formation of mixed micellar structures of AlADAO:sulfonol in the composition under study are confirmed by molecular modeling methods. The results open up prospects for using the developed system in hydraulic fracturing technologies to replace traditional polymer fluids.
Keywords:
SURFACTANTS, RHEOLOGY, MICELLIZATION, VISCOELASTIC FLUIDS, HYDRAULIC FRACTURING, VOLATILE ORGANOCHLORIDE COMPOUNDS
SURFACTANTS, RHEOLOGY, MICELLIZATION, VISCOELASTIC FLUIDS, HYDRAULIC FRACTURING, VOLATILE ORGANOCHLORIDE COMPOUNDS
