Abstract
Unconsolidated sandstone reservoirs are susceptible to sanding problems. Traditional sand consolidation methods are often not environmental-friendly or ineffectively. This paper proposed a new sand consolidation treatment with aqueous-based self-healing system (ABSH) to maximize the sand free rate. The ABSH performs well with a relative lower dosage in laboratory tests. Sand consolidation performance and chemical resistance property were evaluated using the maximized sand free rate as indicators. After aging for 12 hours, the maximized sand free rate of consolidated sand pack could be prominently increased to 6600mL/h. Re-agglomeration ability between sand particles was illuminated by adhesion force tests. The adhesion force could be almost 90% of the original one after the contacting and separating process proceeded for three times.
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