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Technology Profile
DSL Composition – Increase of Oil Recovery
System
Description
At present there is a decrease of produced oil resources
structure. A significant growth of oil deposits both onshore
and offshore transferring to a late production stage is observed.
In the oil resources structure the most part is falling
to the share of heavy-recoverable reserves. As the oil fields
production practice showed about 70 % of heavy-recoverable
oil is contained in low-permeable, stagnant zones and
30% - in capillary-confined and film oil. As a result of it,
there is a necessity in the development and creation of new
technologies increasing scope of deposits with heavy-recoverable
resources and simultaneous increase of oil recovery
oil. Growth of hydrocarbon production depends
upon waterflood system improvement that becomes possible
when applying physical-chemical, thermal methods
and other oil recovery increase. Each of the above-mentioned
methods influences on one of the factors (high oil
viscosity and interphase tension at the oil-water border) decreasing
oil recovery ratio. In this connection it is necessary
to create method which will simultaneously impact on
several factors decreasing efficiency of oil recovery. The
suggested DSL system increases oil recovery and unlike
other systems is economically profitable.
Innovative Aspects and Main Advantages
The essence of the process deals with the use of composition
allowing to significantly decreasing interphase tension
between oil-water, increase angle of contact of
selective rock’s wetting as well as decrease oil viscosity
that will lead to oil volume decrease in blocked water in
pores and residual oil-saturation as compared to traditionally
applied methods. Outwardly, composition represents a
liquid of a dark-brown color easily-soluble in the water. Average
molecular mass is 256.. Application of the given composition
is possible in wide range of oil densities varying
from a light (ρ < 870 kg/m 3 ) to heavy (ρ > 920 kg/m 3 ). DSL
composition can be used in combination with polymer
flooding. DSL solution impacts on rheological oil characteristics
that positively influences on oil displacement
process.
Contact Details
Institute of Geology
Contact persons: Dr. Strecov A.S.,
Dr. Poletayev A.V. & Poletayeva Y.V.
Address: 29 A, H. Javid Avenue
AZ1143, Azerbaijan, Baku
Areas of Application
• Company is engaged in hydrocarbon production in different
geological, physical and technological conditions;
• Leading oil-gas companies, production-commercial
association.
Stage of Development
The conducted pilot works on Balakhany, Sabunchi fields
etc. showed a significant increase of reservoir recovery that
testifies to a high quality of composition.
Tel: (+994 12) 510 0141
Fax: (+994 12) 497 5285
E-mail:avo1@mail.ru, alexsander@gia.ab.az,
yelenapv@mail.ru, yelena@gia.ab.az
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