To reduce water injection pressure , improve waterflood
development effect in Wennan oilfield ,the Nanometer technology
is introduced into oilfield development and is used to reduce
water injection pressure and increase water absorbing capacity.
Nanometer material which is mainly composed of SiO2 is provided
with significant water resistant and oil-wet power which can
produce physical absorptive action at the surface of sandstone
grain and increase water phase permeability. The results of above
all can reduce flow resistance of injection water and reduce
pressure and increase water injection. The developed low cost
aqueous transport fluid testified by core2flooding experiment and
field application indicates that the injection2increased technology
can reduce water injection pressure of low permeable oilfield ,
strengthen water absorbing capacity and improve water injection
development effect.
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