ISSN 1070-4272, Russian Journal of Applied Chemistry, 2014, Vol. 87, No. 12, pp. 1948−1951. © Pleiades Publishing, Ltd., 2014.
Original Russian Text © Ya.V. Idogova, A.V. Vashchenko, K.Yu. Prochukhan, Yu.A. Prochukhan, 2014, published in Zhurnal Prikladnoi Khimii, 2014, Vol. 87,
No. 12, pp. 1859−1862.
Effect of Aqueous Solutions of Anionic Surfactant
from sec-Alkane Sulfate Series in Mixture
with Polyacrylamide-Based Gel on the Solubilization
of Oil and Stability of Oil-Water Emulsion
Ya. V. Idogova
, A. V. Vashchenko
, K. Yu. Prochukhan
and Yu. A. Prochukhan
Ufa State Petroleum Technological University, ul. Kosmonavtov 1, Ufa, Bashkortostan, 450062 Russia
Bashkir State University, ul. Zaki Validi 32, Ufa, Bashkortostan, 450074 Russia
Received October 28, 2014
Abstract—Effect of a polyacrylamide additive to a solution of the surfactant of the sec-alkane sulfate series on the
solubilization of oil and stability of an oil-water emulsion at 23°C was studied. It was shown that such parameters
as the molecular mass of the polymer and its charge affect the factors under study.
During many years, one of goals of the oil-extracting
industry has been to raise the volume of oil extracted
from productive strata and the rate of development of
oil ﬁ elds [1, 2].
The common practice in most of advanced oil-
producing countries is that the development of oil ﬁ elds
is performed in three stages in order to improve the
economical efﬁ ciency of development, diminish direct
capital investments, and enable re-investments.
In the ﬁ rst stage, oil ﬁ elds are developed in the natural
mode by using the elastic reservoir energy; energy of
dissolved gas, edge water, and gas cap; and potential
energy of the gravitation forces .
In the second stage, artiﬁ cial techniques are employed,
which supplement the natural formation energy and
primary extraction mechanisms with the pressure
maintenance by various kinds of water ﬂ ooding. In the
international practice, the water ﬂ ooding method is not
regarded as an enhanced oil recovery (EOR) method. It is
no accident that a synonym of its name is the formation
In the third stage, improving the oil ﬁ eld development
efﬁ ciency requires that EOR methods should be used to
change the natural forces in an oil deposit in order to raise
the ﬁ nal oil recovery factor .
The development of ecologically clean techniques with
an alkaline surface-active polymer (ASP) fundamentally
changes the economics of EOR methods.
Addition of polymers to a solution of a surfactant (SF)
used for chemical watering of an oil reservoir makes its
viscosity higher. This reduces the water-to-oil mobility
ratio and facilitates displacement of oil to extracting
As objects study were taken mixtures of SPECFLOC
polyacrylamide (PAA) (concentration 0.01 wt %) having
different molecular masses (MM) and charges with an
anionic surfactant ASF having a working name R-58
with active substance concentrations of 0.2, 0.5, 1.0, and
1.5 wt %: sample no. 1, ASF solution; sample no. 2, PAA
with MM 16.5 × 10
and charge of 25% + ASF; sample
no. 3, PAA with MM 12.7 × 10
and charge of 15% + ASF;
and sample no. 4, PAA with MM 12.3 × 10
of 44.7% + ASF. The amount of charge is the parameter
taken from manufacturer’s accompanying documents and
corresponding in the commonly accepted terminology to
the degree of hydrolysis of a polymer.