Research and Application of Fluorine Complex Acid Plug Removal and Sand Consolidation Agent

摘要

Fluorine complex acid plug removal and sand consolidation agent is composed of trifluoroacetic acid, corrosion inhibitor, complexing agent, surface active agent. In this paper, the reaction mechanism, clay dissolution quantity, change of formation permeability, resistance to erosion intensity of fluorine complex acid plug removal and sand consolidation agent were studied, the experimental results showed that the fluorine complex acid plug removal and sand consolidation agent agent can not only relieve the mud pollution, but also firm sand when enhance the permeability. This new agent will be applied to the mud plugging and fine sand wells.