Field test of reservoir deep flow alternation by using crosslinked polymer in small fault block

The small fault-block reservoir has already come into middle-later time developing stage in Lingpan Oillield,and the effect of profile control is successively becoming worse.Therefore,the field test of deep flow alternation is done by using crosslinked polymer in L106-1 fault block,a moderate permeator,heterogeneous reservoir.The paper presents the function mechanism and properties of crosslinked polymer.And in combination with practical condition of reservoir,the operation parameters are optimized.Through application of reservoir deep flow alternation technology in well L106-4 in L106-1 fault block,oil pressure has risen 2 MPa,the value of PI 2.6 MPa.And the injection profile is greatly modified,and cumulative incremental oil is 1678 t.