Background
To prove the crude oil recovery, acidification of the low
permeable reservoirs is one of the efficient operations,
during which hydrochloric acidic fluid is pumped into
wells to etch the fracture walls irregularly and create
highly conductive channels [1]. While it is also a great
challenge for the metal instruments involved in the acidification,
and there is a need to improve the resistance
properties of the steel against such corrosion in acidic
media. Great attention has been paid to prolonging the
lifetime, in which the use of corrosion inhibitors is
considered as the most effective method against such
acid attack [2,3]. Functional electronegative groups and
p-electron in conjugated double or triple bonds, are the
major adsorption centers. So the organic compounds,
containing heteroatoms, such as sulfur, phosphorus,
nitrogen and oxygen, together with aromatic rings, are
efficient as corrosion inhibitors [4-7].