First, the use of products
Multi hydrogen acid, compared with the conventional mud acid system, with strong corrosion speed and strong adsorption capacity, especially in the initial stage of the reaction, the reaction rate is about 30% of other acid. Such as multi hydrogen acid solution of hydrogen ion concentration is higher, can guarantee the acid fluid system has plenty of hydrogen ion and fluorine salt reaction generates hydrofluoric acid. Multi hydrogen acid system of quartz dissolution rate is much higher than the soil acid and fluoboric acid system, and on the clay minerals has inhibitory effect on the rate of reaction; multi hydrogen acid system can maintain the formation water wetting property, not on the reservoir of oil and gas seepage produced adverse effects; multi hydrogen acid system of sandstone reservoir acidizing effect is better in the conventional mud acid and fluoboric acid and acid fluid system, long distance, no secondary precipitates, application of oil and water wells multi hydrogen acid system by acidification, incremental oil for single well, increasing injection effect significantly.

Two, technical requirements
 

Project	Index
	RD-04A	RD-04B
Appearance	Colorless to light yellow transparent liquid	Colorless transparent crystal
PH value (1% aqueous solution)	≤2.5	—
Density (20 degrees C), g/cm3	≥1.15	—
Active content,%	≥24	≥95
Chelating ability, mg/g	≥220	—
Relative slow rate， % ≥	60
Organic chlorine content，%	Negative

Three, the use of methods
Use concentration according to the site construction requirements are generally in 1-3% (A) RD-04, RD-04 (B) 5-10%.

Four, storage and transportation
1 products stored in ventilated, dry place, prevent direct sunlight.
2 transport and handling should be handled gently and prevent violent collision, inversion, extrusion, in order to avoid the occurrence of leakage.

Five, matters needing attention
1 the product belongs to the corrosion product, is strictly prohibited the violent collision, the inversion, the extrusion.
2 should be separated from the flammable or combustible materials, alkali, metal powder, etc.. Non mixed storage and transportation. When moving to light light unloading, prevent damage to packaging and containers, packaging and handling operation should pay attention to personal protection.
3 in the use of the process, the staff should wear self absorption filter gas mask (full cover) or air respirator, wear rubber acid and alkali resistant clothing, wear rubber gloves.
4 if there is a leak, quickly evacuate the contaminated area personnel to the safe area, and isolation, strictly limit access. Recommended emergency personnel wear self positive pressure respirator, wear anti acid overalls. Do not direct contact with the leakage, as far as possible to cut off the source of leakage. Prevent access to sewers, flood channel limited space. Small amount of leakage: sand, dry lime or soda ash mixture, can also use a large amount of water to flush, wash water diluted into the wastewater system. A large leak: construct a barrierpit to contain; pump transferred to tankers or a special collector, recycling or shipped to the waste treatment disposal sites.