[2E13-17] Natural resource exploitation(2)

[2E17] Investigation on acid wormholing in carbonate reservoirs

○Kenji Furui¹, Tomoaki Ishiwata², Yoshihiro Tsuchiya², Yoshiharu Ito² (1. Waseda University, 2. Japan Oil, Gas and Metals National Corporation )

Matrix acidizing is one of the most popular well stimulation techniques in oil and gas developments. It has been reported from many carbonate reservoirs around the world that high-rate matrix acidizing treatments create highly conductive flow paths called wormholes, which can significantly improve the well productivity/injectivity. In this presentation, we discuss fundamental mechanisms of wormhole formation and growth based on experimental and numerical study results.

Keywords:carbonate, matrix acidizing, wormholing