Nowadays, hydraulic fracturing is one of the most effective ways of low-permeability layered reservoirs management. About half of the oil reserves, remained in Western Siberia today, are concentrated in such reservoirs. The field experience and engineering calculations show that without fracturing the largest part of this oil would be left in the Earth forever. That is why we can classify hydraulic fracturing as a method of oil recovery enhancement.

The reduction of multi-zone fracturing time cycle is an important part of asset management and cost optimization for the large multi-layer oil fields developing with the help of hydraulic fracturing.

Keywords:
well integrity, downhole ball valve, Upstream Oil & Gas, Straddle Frac Packer, hydraulic fracturing, Priobskoe field, zonal isolation, spe 117424, ball valve, reduction
Subjects:
Hydraulic Fracturing, Well Integrity, Zonal isolation
Copyright 2008, Society of Petroleum Engineers
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