1. A high temperature resistant crosslinking acid system for carbonate reservoir.
- Author
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Chen Fu, Xiao Chengchuan, Huang Leiguang, Zeng Ke, and Yao Jun
- Subjects
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CROSSLINKING (Polymerization) , *CARBONATE reservoirs , *MATERIALS at high temperatures , *GAS engineering , *CHEMICAL engineering - Abstract
In this paper, a high temperature resistant crosslinking acid for high temperature acid fracturing operation in the carbonate reservoir is developed through screening the crosslinking acid thickener and crosslinker and remixing with acid additives. Acid thickener and crosslink-er are crucial to the comprehensive performances of the crosslinking acid under high temperature. DM3802 and JL-10 were screened as the best thickener and the best crosslinker respectively through analyzing of acid solubility, thermostability, crosslinking time, crosslinked viscosity and time of temperature resistance. The dosages were also determined. The compatibility experiment with acid additives also showed the excellent compatibility of this crosslinking acid system. It shows that the crosslinking acid system possesses the characteristics of good high temperature resistance, superb rheological profiles, good prop-carrying capacity, controlled leak-off and good gel breaking property under 120 °C. [ABSTRACT FROM AUTHOR]
- Published
- 2013
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