A CORE FLOOD STUDY FOR USING STIMEX AS A NEW STIMULATION FLUID

STIMEX as a new stimulation fluid is introduced by Poil Company as alternative for hydrochloric acid and mud acid for stimulating carbonate and sandstone reservoirs, respectively. The aim of this core flood study is to examine the effectiveness of STIMEX injection in terms of creating a wormhole through the core plug aiming at improving the effective permeability of the limestone core samples. For this reason, two limestone samples named 36AAH and 37AAH were taken from a 6 inch core from a well located in Iran to perform STIMEX injection tests. The cores were treated with STIMEX under the field conditions of this well. Experimental results showed that STIMEX is highly effective in creating wormholes through the core samples. This lead to a significant increase in sample permeability. Unlike hydrochloric acid there was no face dissolution in the cores even at very low rates.

Keywords:

Stimulation fluid , STIMEX , Core flood test , Improved permeability , Effective wormhole