Description
Oil field auxiliary additive N-octadecylalkyl diquaternium salt
Another name：
Double-chain quaternary ammonium salt
Nature：
Conclude two weng nitrogen atoms, it has stronger bonding capacity
and adsorption capacity of metal, plastic, fabric, mining，the
compound of non-ionic and amphoteric surfactants, its performance
has been further improved，and water-soluble significantly
increased, strengthening of emulsifying power.
Purpose ：
1. Quaternary ammonium salt Cationic surfactant emulsifier, can be
used as asphalt emulsifiers, ore flotation agent, fabric and
finishing auxiliaries, metal processing additives.
2 Be used for oil field injection water to sterilize. In oilfield
re-injection of sewage, there are a large number of microorganisms,
such as: sulfate-reducing bacteria (SRB), iron bacteria,
saprophytic bacteria. In the process of their growth, metabolism,
and reproduction, these microorganisms can cause severe corrosion
of drilling and production equipment, Water injection pipeline and
other metal materials, they also clog pipes, and damage to the oil
reservoir, which cause the reduction of water injection rate, oil
production and gasoline quality. At the same time, these troubles
have made the crude oil processing more difficult. All of these
results a great economic losses. Currently the main method to
control the reinjection sewage bacteria is still adding fungicides.
However, there are only several fungicides in common use, such as
chlorine dioxide, aldehydes, and quaternary ammonium salt. These
fungicides more or less have some defects, such as: large dosage,
high toxicity, and heavily polluted. Although the bactericidal
effect of the quaternary ammonium salt is good, long-run use will
make the SRB produce drug resistance, which resulting in the
increase of dosage and processing costs. Thus, the development of
new effective fungicides is very necessary. As a typical
representative of the new fungicide family, the biquaternary
ammonium salt attracts widespread attention for its low toxicity,
excellent performance. Biquaternary ammonium salt, also known as,
Esterquat Gemini surfactant. Compared with ***7, biquaternary
ammonium salt has a higher bactericidal effect, and used with other
agents, it not only can inhibit SRB drug resistance, but also
reduce the cost of processing. Meanwhile, the biquaternary
ammonium salt has excellent water solubility, and also has good
corrosion inhibition of carbon steel.
