›› 2010, Vol. 18 ›› Issue (3): 511-514.

• PRODUCT ENGINEERING AND CHEMICAL TECHNOLOGY • Previous Articles     Next Articles

Visco-elastic Properties of VES Diverting Acid for Carbonate Reservoirs

ZHAO Zengying, LÜ Guocheng   

  1. China University of Geosciences (Beijing), Beijing 100083, China
  • Received:2009-09-30 Revised:2010-02-03 Online:2010-06-28 Published:2010-06-28
  • Supported by:
    Supported by the Acidification for Heterogeneous Carbonate Reservoirs Program of Petro China Company Limited

Visco-elastic Properties of VES Diverting Acid for Carbonate Reservoirs

赵增迎, 吕国诚   

  1. China University of Geosciences (Beijing), Beijing 100083, China
  • 通讯作者: ZHAO Zengying,E-mail:zhaozy@cugb.edu.cn
  • 基金资助:
    Supported by the Acidification for Heterogeneous Carbonate Reservoirs Program of Petro China Company Limited

Abstract: Storage modulus and loss modulus is the main performance index of visco-elastic properties.In this paper the storage modulus and loss modulus of a new diverting acid and their influencing factors were systematically investigated.Besides,the constitutive equations of the diverting acid at different temperatures were elicited from shearing experiments,which show that the visco-elastic surfactant(VES)acid system is a non-Newtonian power law fluid at low temperature and a Newtonian fluid at high temperature.The storage modulus and loss modulus at different temperatures,pH,and VES content in the acid are critical for the design of acid stimulation for oil well,especially when the VES acid is used in this field only on trial and the basic data are in urgent needed for the design and construction of the acidification stimulation.

Key words: storage modulus, loss modulus, visco-elastic surfactant, oil field acidification, diverting acid

摘要: Storage modulus and loss modulus is the main performance index of visco-elastic properties.In this paper the storage modulus and loss modulus of a new diverting acid and their influencing factors were systematically investigated.Besides,the constitutive equations of the diverting acid at different temperatures were elicited from shearing experiments,which show that the visco-elastic surfactant(VES)acid system is a non-Newtonian power law fluid at low temperature and a Newtonian fluid at high temperature.The storage modulus and loss modulus at different temperatures,pH,and VES content in the acid are critical for the design of acid stimulation for oil well,especially when the VES acid is used in this field only on trial and the basic data are in urgent needed for the design and construction of the acidification stimulation.

关键词: storage modulus, loss modulus, visco-elastic surfactant, oil field acidification, diverting acid