Remotely acidizing satellite wells

Eduardo Da Motta, C. C M Branco, F. S. Shecaira

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

Some satellite wells in the Campos Basin, offshore Brazil, have been experiencing productivity/injectivity reductions, which would normally be restored by acid treatments. Thus, remote acidizing was performed in May 2000, producing oil from a carbonate reservoir. The acid selected was acetic acid, with a viscosity controlled system and acid-soluble balls being used for diversion. The treatment was an operational success, with no leaks occurring in the manifold, flowlines, or other parts of the flow path. Analysis of the spent acid returns showed a pH between 5 and 6, confirming laboratory predictions. The diversion technique using a combination of a self-diverting acid and biodegradable ball sealers was very effective.

Original languageEnglish
Title of host publicationSPE International Oilfield Chemistry Symposium Proceedings
Pages1-12
Number of pages12
Publication statusPublished - 2001
Externally publishedYes
EventSPE International Symposium on Oilfield Chemistry - Houston, TX, United States
Duration: 13 Feb 200116 Feb 2001

Other

OtherSPE International Symposium on Oilfield Chemistry
CountryUnited States
CityHouston, TX
Period13/2/0116/2/01

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ASJC Scopus subject areas

  • Chemical Engineering(all)
  • Earth and Planetary Sciences(all)
  • Engineering(all)

Cite this

Da Motta, E., Branco, C. C. M., & Shecaira, F. S. (2001). Remotely acidizing satellite wells. In SPE International Oilfield Chemistry Symposium Proceedings (pp. 1-12)