Self-diverting Acidizing Fluids (VDA）

Self-diverting Acidizing Fluids (VDA)

VDA acidizing fluid system consists of surfactant thickener, concentrated acid, clean up additive, iron ion stabilizer, corrosion inhibitor and gel breaking agent etc. The concentration of acidizing fluid decreases and its viscosity grows remarkably with the reaction between the fluid and the oil reservoir. Its effective role of diversion guiding and acidizing fluid leak-off reduction is achieved. The penetration depth and processing scope of acidizing fluid is increased, and the effect of acidification or acid fracturing transformation can be improved.

ü  The fluid system changes its viscosity at early reaction stage (HCl,15~18wt%).

ü  Very high shear stability and thermal stability. 

ü  Gel-breaking can be performed automatically or by added diesel.

USAGE:

Applicable in acidizing and acid-fracturing operations. It is capable to decrease the damage caused to the oil formation and better performance can be achieved compared with other acid systems.

Main Technical Data