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Natalia V. Shupik
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Oil and Gas Research Institute of the Russian Academy of Sciences (OGRI RAS) |
Moscow, Russian Federation ShupikNV@tmn.lukoil.com |
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Ilya M. Indrupskiy
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Oil and Gas Research Institute of the Russian Academy of Sciences (OGRI RAS) |
Moscow, Russian Federation i-ind@ipng.ru |
By the example of typical area, in this work analyzed possibility of effectiveness increase of oil pool development in inhomogeneous reservoirs in Jurassic Formation of Western Siberia with useof methodological and technological solutions on advance and vertical-lateral waterflooding, well-grounded withinthe framework of effective pore space conception [1, 2].A sector reservoir geological and flow model of the real object with the existing development system is used as a tool to evaluate the efficiency of the examined solutions.The reason for the choice of this object is typicalness of its parameters and technological solutions, executed by subsurface user, for analogous objects on other fields, put into development in the recent years.
Materials and methods
Flow simulations were performed in the RFD tNavigator software for proper modeling of flow dynamics in the presence of massive hydraulic fracturing.
Results
The performed simulations allow to obtained some important results. The efficiency is established of vertical-lateral waterflooding in monolithic low-permeable reservoirs of small thickness with intensive development systems based on hydraulic fracturing and multi-stage hydraulic fracturing.Vertical-lateral waterflooding based on horizontal injection wells simultaneously solves both the problems of providing a higher level of pressure maintenance and increasing the sweep efficiency. On the contrary, for the traditional flooding systems the two problems are contradictory.
Сonclusions
Vertical-lateral waterflooding is reasonable in monolithic low-permeable reservoirs of small thickness with intensive development systems based on hydraulic fracturing and multi-stage hydraulic fracturing.Optimization of vertical-lateral waterflooding parameters, including location of horizontal wells in reservoir cross-section, as well as its combination with preliminary waterflooding, results in additional improvement of production dynamics for low-permeable reservoirs withhard-to-recover oil.
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