CASE STUDY OF ACIDIZING MATRIX DESIGN WITH ATTENTION TO MECHANISMS FORMATION OF WORMHOLES IN CARBONATE RESERVOIRS

STUDI KASUS DESAIN MATRIX ACIDIZING DENGAN MEMPERHATIKAN MEKANISME PEMBENTUKAN WORMHOLE PADA RESERVOIR KARBONAT

Abstract

This paper discusses the comparison of acid calculation required on carbonate matrix acidizing between the volumetric method and considering the wormhole formation mechanism. Normally the standard estimation of the required acid volume in carbonate rocks is based on the volumetric method where the acid will be distributed evenly in all directions in the targeted formation. However, the real acid mechanism at carbonate rock is affected by the creation of a wormhole. This case study compares the amount of acid volume in both scenarios. The result shows a more optimistic result for the volumetric method compared to the wormhole influences.