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Self-Assembled Viscoelastic Surfactant Micelles with pH-Responsive Behavior: A New Fracturing-Displacement Integrated Working Fluid for Unconventional Reservoirs.
Li, Xiaochen; Zhang, Xianbin; Wang, Leilei; Wen, Fei; Chen, Yurong; Lv, Qichao; Ma, Hong; Chen, Anliang; Wang, Ruxue; Chen, Leixu; Wang, Qian; Dong, Dianbin; Xu, Shaoying; Niu, Qiqi.
Afiliación
  • Li X; CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, People's Republic of China.
  • Zhang X; Tianjin Enterprise Key Laboratory of Complex Conditions Drilling Fluid, Tianjin 300280, People's Republic of China.
  • Wang L; Unconventional Petroleum Research Institute, China University of Petroleum (Beijing), Beijing 102249, People's Republic of China.
  • Wen F; CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, People's Republic of China.
  • Chen Y; Tianjin Enterprise Key Laboratory of Complex Conditions Drilling Fluid, Tianjin 300280, People's Republic of China.
  • Lv Q; CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, People's Republic of China.
  • Ma H; Tianjin Enterprise Key Laboratory of Complex Conditions Drilling Fluid, Tianjin 300280, People's Republic of China.
  • Chen A; CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, People's Republic of China.
  • Wang R; Tianjin Enterprise Key Laboratory of Complex Conditions Drilling Fluid, Tianjin 300280, People's Republic of China.
  • Chen L; CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, People's Republic of China.
  • Wang Q; Unconventional Petroleum Research Institute, China University of Petroleum (Beijing), Beijing 102249, People's Republic of China.
  • Dong D; Unconventional Petroleum Research Institute, China University of Petroleum (Beijing), Beijing 102249, People's Republic of China.
  • Xu S; CNPC Bohai Drilling Engineering Company Limited, Tianjin 300280, People's Republic of China.
  • Niu Q; Tianjin Enterprise Key Laboratory of Complex Conditions Drilling Fluid, Tianjin 300280, People's Republic of China.
ACS Omega ; 9(21): 22691-22702, 2024 May 28.
Article en En | MEDLINE | ID: mdl-38826515
ABSTRACT
The integrated fracturing and oil recovery strategy is a new paradigm for achieving sustainable and cost-effective development of unconventional reservoirs. However, a single type of working fluid cannot simultaneously meet the different needs of fracturing and oil displacement processes. Here, we develop a pH-responsive fracturing-displacement integrated working fluid based on the self-assembled micelles of N,N-dimethyl oleoamine propylamine (DOAPA) and succinic acid (SA). By adjusting the pH of the working fluid, the DOAPA and SA molecules can be switched repeatedly between highly viscoelastic wormlike micelles and aqueous low-viscosity spherical micelles. The zero-shear viscosity of the working fluid enriched the wormlike micelles can reach more than 93,100 mPa·s, showing excellent viscoelasticity and sand-carrying properties. The working fluid is easy to gel-break when it encounters oil, generating a low-viscosity liquid without residue. In addition, the system has strong interfacial activity, which can greatly reduce the oil-water interfacial tension to form emulsions and can achieve reversible demulsification and re-emulsification by adjusting pH. Through the designed and fabricated microfluidic chip, it can be visualized that under the synergistic effect of viscoelasticity and interfacial activity DOAPA/SA can effectively expand the swept volume of tight fractured formations, promote pore wetting reversal and crude oil emulsification, and improve the displacement efficiency. The DOAPA/SA meets the design requirements of the fracturing-displacement integrated working fluids and provides a novel method and idea for constructing the integrated working fluids suitable for fracturing and displacement in unconventional reservoirs.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Omega Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Idioma: En Revista: ACS Omega Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos