Abstract
To improve the efficiency of flooding process, a method of development of inhomogeneous formation allowing isolating flooded high-permeable zones, preventing salt deposition directly in the reservoir, increasing displacement ratio due to the inter-phase tension, wettability and permeability of a rock as well is offered. The method includes adding chemical agents into the seawater with its further injection into the deposit through injection wells. The optimum amount of added mixture has been specified experimentally. The mixture of the chemical agents is added into the seawater in amount of 1.0 %, while the increase of displacement efficiency reaches up to 9.1 %. In case if produced water is hard, prior to the injection of seawater bank, an alkali water bank with pH from 11.4 to 14 is injected into the deposit.
Published Version
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