西南石油大学学报(自然科学版)

Previous Articles    

Network Simulation of Formation Damage Due to Suspended Particles
in Injection Water

Feng Qihong1, Han Xiaodong1,2, Wang Shoulei3, Zhang Xin1, Zhou Wensheng3   

  1. 1. College of Petroleum Engineering,China University of Petroleum(East China),Qingdao,Shandong 266555,China
    2. Tianjin Branch,CNOOC,Tanggu,Tianjin 300452,China
    3. CNOOC Research Institute,Dongcheng,Beijing 100027,China
  • Online:2014-06-01 Published:2014-06-01

Abstract:

Abstract:Particles suspended in injection water could damage the formation and decrease the permeability. And it’s of great
importance to study the impact of various factors on the formation impairment for its prevention and treatment. In our study
here,pore scale network modeling method is applied to the study of the formation damage patterns and the change of the porethroat
radius under various conditions. In network models,different microcosmic particle variation mechanisms are taken into
consideration. The results indicate that the pore-throat radius will decrease with the process of waterflooding and pore-throats
that are closer to the inlet face will have a much higher decrease of their radius. Besides,the lower the flow rate is,the higher
the particle concentration in injection water is,the lower the fluid viscosity and bigger particle size,it will be beneficial for the
formation damage.

Key words: Key words:waterflooding reservoir, suspended particle, formation damage, particle capture, network modeling