Description
Oil field auxiliary additive didodecyl dimethyl-γ-diquaternium
salt
Double alkyl-γ- diquaternium salt
Include both performance of double alkyl single
quaternary ammonium salts and monoalkyl bisquaternary ammonium
salt, with strong adsorption, hydrophobic, soft, anti-static,
anti-corrosion, and also have the ability as germicidal lamp.
1. Used as emulsifier, softening agent, adsorbent,
fungicides, antistatic agents. use for ore flotation, bitumen
emulsion, fabric soft, metal corrosion, plastics processing,
sterilization and algae killing .
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 result 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.Â
Meanwhile, the biquaternary ammonium salt has excellent water
solubility, and also has good corrosion inhibition of carbon
steel.
