Stimulation Chemicals
Matrix Acidizing is a well stimulation technique that involves the controlled injection of acid into the wellbore to improve hydrocarbon production from carbonate reservoirs. The acid is pumped into the formation at specific rates and pressures to dissolve or remove obstacles that are hindering the flow of oil or gas without causing fracturing or damage to the reservoir.
During a matrix acidizing operation, the acid is typically targeted at a radius of three to ten feet around the wellbore to effectively treat the surrounding reservoir rock. The most commonly used acid in these operations is Hydrochloric acid (HCl) due to its cost-effectiveness and widespread availability.
One of the challenges in matrix acidizing is the potential corrosion of the wellbore tubulars, especially at high temperatures. Proper chemical treatments are required to mitigate corrosion and ensure the integrity of the well equipment. Additionally, the rapid reaction of HCl with carbonate rock necessitates the use of techniques such as emulsification or gelation to retard the acid, allowing it to penetrate the reservoir more effectively.
To ensure uniform distribution of the acid treatment throughout the targeted zone, techniques using VES (Viscoelastic Surfactants) and PLA (Polylactic Acid)-based diversion systems are employed. These diversion methods help optimize the coverage of the treatment fluid within the reservoir.
The Atomix technology team is known for its expertise in acidizing technologies and has developed numerous patented solutions to address the challenges associated with acid treatments in carbonate reservoirs. Through their research and publications, they have contributed significantly to enhancing production rates and resolving issues related to acidizing operations in the oil and gas industry.