Wide-scale introduction of EOR methods has been normally hampered by n
onavailability of necessary chemical agents domestically. SibNIINP, a
Siberian oil and gas R&D institute, has proposed an alternative option
of using by-products obtained at chemical plants to improve oil recov
ery. AO Yuganskneftegaz performed between 1992 and 1993 wide-scale fie
ld testing of these products and found high technology efficiency.