Volume 39 Issue 3
May  2022
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LIU Fanghui, ZHANG Shikun, CAO Nai.Study and evaluation of highly permeable retarded acids[J]. Drilling Fluid & Completion Fluid,2022, 39(3):365-372 doi: 10.12358/j.issn.1001-5620.2022.03.016
Citation: LIU Fanghui, ZHANG Shikun, CAO Nai.Study and evaluation of highly permeable retarded acids[J]. Drilling Fluid & Completion Fluid,2022, 39(3):365-372 doi: 10.12358/j.issn.1001-5620.2022.03.016

Study and Evaluation of Highly Permeable Retarded Acids

doi: 10.12358/j.issn.1001-5620.2022.03.016
  • Received Date: 2022-01-10
  • Rev Recd Date: 2022-03-05
  • Publish Date: 2022-05-30
  • In acid fracturing carbonate reservoirs, the quality of the acid directly affects the quality of the stimulation. Problems with the acids presently used in fracturing operation include low permeability, high corrosion rate and poor retarding performance. To solve these problems, an acid used as the main component of a compound organic retarded acids, a drag reducer for acidizing operation, a corrosion inhibitor and an iron ion stabilizer were selected to formulate a new high permeability retarded acid suitable for use in acidizing carbonate reservoirs. Laboratory experimental results showed that this new retarded acid has good retarding performance, low corrosion rate and better permeating ability. This study is of theoretical guiding significance and practical application value for fully and efficiently developing carbonate reservoirs.

     

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