Title: Research and application of BHXJY-01 temporary plugging solution system for heavy oil reservoirs
Abstract: Aiming at the leakage condition of unconsolidated sandstone heavy oil reservoir during well repairing process in Bohai Bay, BHXJY-01 temporary plugging solution system was researched and developed. The solution formula consisted of five components which were tackifier, oil soluble resin, workover fluid synergist, clay Stabilizer and gel breaker. The leakage testing results show that: the plugging rate of this temporary plugging fluid achieves to 99% for man-made core and the gel break rate reaches over 90%. Flow back permeability recovery of the blocked sample comes up to 90%, and the temporary plugging and flow back performances could meet the requirement of well blocking and repairing. Site operating condition illustrates that: this temporary plugging solution system could significantly reduce the leakage of well repairing fluid and then decrease the damage of reservoir; meanwhile, the good performance of this solution could shorten the production recovery period after well repairing.
Publication Year: 2012
Publication Date: 2012-01-01
Language: en
Type: article
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