Synthesis and Performance Evaluation of Phosphate-modified Furan Resin Aqueous Sand Consolidation

doi:10.11885/j.issn.1674-5086.2019.04.29.01

Abstract

Abstract: The study aimed at the contradiction between the strength of sand consolidation and the retention rate of formation permeability. Phosphate modified furan resin sand consolidation agent was prepared by hydroxyl polycondensation with phosphate, polyether (L35) and furan resin as main raw materials, and it was used as sand consolidation agent after dilution with water on ratio 1： 3. On the one hand, water was used as natural pore increasing agent, on the other hand, sand consolidation agent film was formed and solidified in water environment, which guaranteed compressive strength and high formation permeability. It effectively solves the difficult problem that puzzles the sand consolidation effect of chemical method for a long time. The results show that the phosphate modified furan resin can be consolidated at 60 ℃ for 48 h after dilute with water for 3 times. The compressive strength is above 4 MPa. It is suitable for sand consolidation in underwater environment of oil field. By March 2019, phosphate modified furan resin sand consolidation agent had been used in 10 wells in oilfield, with a 100% success rate of sand control and acumulative oil increase of 13 000 t. It has obtained the good effect in the practical application.

Key words: sand control, phosphate ester, furan resin, water-base sand consolidation agent, permeability

CLC Number:

TE254

SONG Jinbo, ZHAO Yizhong, JIA Peifeng, ZHANG Yuchen, CHEN Xue. Synthesis and Performance Evaluation of Phosphate-modified Furan Resin Aqueous Sand Consolidation[J]. 西南石油大学学报(自然科学版), 2020, 42(4): 173-180.

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