Sichuan All-Chem Chemical Co.,Ltd, a leading provider of advanced oilfield chemicals and reservoir stimulation solutions, today announced the successful development and full laboratory validation of its innovative high-temperature resistant emulsified acid system. This game-changing formulation delivers exceptional structural stability and consistent technical performance at sustained temperatures up to 275°F (135°C), addressing a long-standing critical pain point for deep well oil and gas operations globally.
For operators targeting deep and ultra-deep hydrocarbon reserves, conventional emulsified acid systems have long faced fundamental limitations under high downhole temperatures. Premature demulsification, uncontrolled acid-rock reaction, rapid acid consumption, severe tubular corrosion, and shortened effective penetration distance have consistently compromised stimulation results and raised operational risks. As the industry increasingly shifts to deeper, higher-temperature formations, the demand for a thermally robust, high-efficiency acid system has become a top technical priority.
Our newly developed emulsified acid system is a precision-engineered water-in-oil (W/O) formulation built to overcome these industry-wide challenges. The system uses a custom-formulated low-aromatic mineral oil as the continuous phase, and an optimized hydrochloric acid-based composite acid blend as the dispersed phase, integrated with a suite of independently developed functional additives including a proprietary high-temperature emulsifier, high-temperature corrosion inhibitor, iron ion stabilizer, and mutual solvent.
In rigorous, industry-standard laboratory testing, the system demonstrated industry-leading thermal stability: when exposed to a constant 275°F environment for over 4 hours, the formulation maintained over 95% emulsification efficiency, with zero demulsification, phase separation, or sedimentation observed. This exceptional thermal integrity ensures the acid system retains its core structure and performance throughout the entire pumping, placement, and reaction process, even in extreme downhole conditions.
Beyond thermal stability, the system delivers balanced, best-in-class performance across key technical metrics:
- Superior Retardation Performance: At 275°F, the acid-rock reaction rate is reduced by more than 60% compared to conventional emulsified acid systems. This controlled reaction kinetics significantly extends the acid’s effective penetration distance, enabling it to reach deep into the formation, remove both near-wellbore and deep reservoir damage, and enhance long-term formation conductivity for sustained production gains.
- Ultra-Low Corrosion Rate: The formulation’s proprietary high-temperature corrosion inhibitor provides exceptional protection for standard downhole tubular steels including N80 and P110 grades. At 275°F, the measured corrosion rate is below 0.05 lb/ft², well within the strict limits set by API industry standards, minimizing equipment wear, reducing operational safety risks, and extending the service life of downhole assets.
- Broad Compatibility: The system exhibits outstanding compatibility with formation water, crude oil, and commonly used oilfield chemicals, with no precipitation or flocculation detected during compatibility testing. It is suitable for acidizing and acid fracturing operations in both carbonate and sandstone reservoirs, making it a versatile solution for a wide range of well stimulation applications.
This breakthrough reinforces our position as an innovator in the global oilfield chemicals market, expanding its portfolio of high-performance stimulation solutions to address the evolving needs of deep and ultra-deep hydrocarbon development. The system is now ready for field trials and full commercial deployment worldwide.
For more detailed technical specifications, test data, or to discuss customized acidizing solutions tailored to your specific operational needs, please do not hesitate to contact our global business development team at admin@scall-chem.com. Our technical and sales experts are available around the clock to provide full end-to-end support and collaborate with partners worldwide.
Post time: Mar-20-2026