Mechanical methods of flow-diverting agents during acid treatment


  • А.Е. Zhamasheva al-Farabi Kazakh National University
  • D.G. Idrisova al-Farabi Kazakh National University
  • Z.Zh. Rakhmashev al-Farabi Kazakh National University
  • I.M. Karim al-Farabi Kazakh National University
  • ZH.E. Ermuratova Atyrau University of Oil and Gas named after Safi Utebayev



acid, acid treatment, flow-diverting agents, heterogeneous layers, wormholes, diversion, permeability, coil tubing.


An effective diversion technique is a crucial component in all acid stimulation jobs, which allows us to achieve full zonal coverage and thereby achieve the treatment objectives. In the process of acidizing heterogeneous formations, it is necessary to change the direction of the fluid to the target interval, i.e., the interval with low permeability, to ensure an even distribution of pumped fluids throughout the formation. This is because in heterogeneous formations, due to the different permeability of the layers, highly permeable wormholes can be treated with acid, and wormholes with low permeability can remain untreated. The article describes the technological features of methods of flow-diverting agents (diversion methods) used to change the flow distribution to prevent this problem, i.e. methods of optimal acid placement. In the article, one of the mechanical methods of flow-diverting agents, the Coil tubing technology, is considered and its effectiveness is determined by conducting quantitative experimental studies.



How to Cite

Жамашева, А., Идрисова, Д., Рахмашев, З., Карим, И., & Ермуратова, Ж. (2021). Mechanical methods of flow-diverting agents during acid treatment. Engineering Journal of Satbayev University, 143(6), 34–43.



Earth Science