Optimal waterflood pattern selection with use of multiple fractured horizontal wells for development of the low-permeability formations

Authors: R.R. Galeev, A.M. Zorin, A.V. Kolonskikh, G.I. Habibullin (RN-UfaNIPIneft LLC, RF, Ufa), T.R. Musabirov, I.V. Sudeev (Rosneft Oil Company OJSC, RF, Moscow)
E-mail: GaleevRR@ufanipi.ru
Key words: low-permeability reservoirs, multiple fractured horizontal wells, optimal waterflood well pattern.

In the region of RN-Yuganskneftegaz LLC undeveloped parts of oil fields are edge zones with high shale factor, low continuity of sand bodies and low permeability.
In order to maintain the profitable oil production levels application of new well completion methods are needed to increase well productivity, such as horizontal wells with multistage hydraulic fracturing. In the Rosneft oil company that problems are solved within the bounds of target innovative project of low-permeability formations development. Generalized approach to the optimal waterflood pattern design selection with widely use of multiple fractured horizontal wells is presented with case study on the Priobskoye and Prirazlomnoye fields. Based on analysis of technical and economics characteristics of development performance the advantages and disadvantages of fractured horizontal wells compared to the fractured vertical
wells are discussed. Some methodological aspects of waterflooding modeling
in low-permeability formations are discussed. 

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