What is a corrosion inhibitor for oilfield water injection?

At present, water injection is a method to improve oil recovery. China's annual water injection volume is as high as 400 million cubic meters, and the poor water quality of the water injection system causes equipment corrosion. Therefore, a corrosion inhibitor was added. There are many kinds of corrosion inhibitors for oilfield water injection, mainly including the following.

A.CT2-7 water injection corrosion inhibitor This corrosion inhibitor takes water-soluble organic amine salt film-forming agent as the main component. Suitable for oil field water injection system. Compatible with various additives. Besides uniform corrosion, it can also inhibit local corrosion.

CT2-7 is soluble in water and slightly soluble in oil. Its freezing point is 1 1 Celsius, and its density (20 Celsius) is 0.97g/cm3. Low toxicity and irritation to skin.

The dosage of this corrosion inhibitor is (15~20)x 106 (based on the total liquid volume) in open system and (10- 15)xl0-6 in close system. When in use, CT2-7 and water are mixed into a solution according to the ratio of 1∶9, and then pumped into the system.

B ct2-10 oilfield water injection corrosion inhibitor. The main component of this corrosion inhibitor is organic amine. This is a yellow transparent liquid with pungent smell, with a density (20 degrees Celsius) of 0.997g/cm3 and a pH value of.