Application of baffled or injectivity profile leveling technology for reservoir is classically associated with increase of reservoir sweep effect. The considered injectivity profile leveling technology with the use of AS-CSE-1313 mark A reagent has a complex mechanism of influence based on the change in coverage rates and the increasing ratio of oil displacement.
There are dispersed particles in working solution, which are the focal points of the reinforced gel formation. The solid reinforced screen formation is at the first stage in high-permeability reservoir intervals. At the second stage in low permeability reservoir intervals the reinforced globules dispersed in a pore space: it is a process of residual oil displacement. The new mechanism in reservoir, aimed at increasing oil recovery factor (ORF), is confirmed by numerous laboratory tests and field work.
Gel-forming AC-CSE-1313 technology tested in different geological-physical conditions of the West Siberia fields, is found to be successful and at the stage of industrial implementation. The competitive advantages compared with the known polymer systems are determined during technology implementation. At all wells during injection the pressure rise was not observed, which is one of the positive factors in comparison with the injected polymer systems. The results of composition filtration test on the parallel core holder confirmed the composition impact selectivity based on AC-CSE-1313 grade A reagent and its using possibility in water shutoff technologies for production wells.
The additional oil resources are involved in active development as a result of complex mechanism by AC-CSE-1313 grade A, there is stabilization of oil production at fields located in a mature stage of development with high water cut of oil production, and natural decline in oil production.
References
1. Panarin A.T., New approaches to the development technology in the late
stage (In Russ.), Georesursy = Georesources, 2013, no. 4, pp. 54–57.
2. http://www.ey.com/Publication/vwLUAssets/Advanced-recovery-methods-
in-Russia/$File/Advanced-recovery-methods-in-Russia.pdf
3. Alvarado V., Manrique E., Enhanced oil recovery: An update review, Energies,
2010, V. 3(9), pp. 1529–1575, doi: 10.3390/en3091529.
4. Patent US2601235, Process for producing built-up silica particles, Inventors:
Guy B.A., Ralph K.I., Frederick J.W., 1952.
5. Patent no. 2592932 RU, Composition for increasing oil production, Inventors:
Fakhretdinov R.N., Yakimenko G.Kh., Selimov D.F.
6. Gimaletdinov R.A., Sidorenko V.V., Fakhretdinov R.N. et al., Criteria for effective
application of conformance control technologies under the production
climate of Gazprom Neft JSC (In Russ.), Neftyanoe khozyaystvo = Oil Industry,
2015, no. 5, pp. 78-83.
7. Kuznetsov M.A., Ishkinov S.M., Kuznetsova T.I. et al., The constantly developed
research and production programs of industrial adaptation of injectivity
profile level ing technologies for low permeability reservoirs of Slavneft-Megionneftegas
OJSC (In Russ.), Neftyanoe khozyaystvo = Oil Industry, 2015,
no. 10, pp. 106–110.
