雷公油田极复杂断块内注水试验研究

Water Flooding Experiment of Extremely Complex Fault Zones in Leigong Oilfield

(南方公司广西石油天然气开发分公司)

In order to put the super comp lex fault zone into
w aterflood deve lopm ent and im prove the recovery e fficiency,
an experim ent o f in jection was done in Le igong Oilfie ld in
Ba ise Bas in, and a success was taken. A elaborate filte r has
been insta lled at the w e llhead, the pro tective liquid of the
lead ing edge has been poured in to thew aterw e ll before form a l
w ater in jec tion, and the ac id ification has been used in o rder
to so lve the prob lem s of the wa ter quality and the prope rty ,
w hich cause the h igh in jec tion pressure in Le igong O ilfield
and improve the wa ter absorb ing capacity of the layers,
m ak ing the steady wa ter flood under no rm al pressure becom e
rea lity. A fter turning W e ll L4􀀁10 and W e ll L3􀀁6 in to wa ter
w e ll in the super com plex fault zone of Le igong O ilfield, four
w e lls around them a ll g et the w ater flooding effec ts,
dem onstrating that the wa terflood deve lopm ent in the super
comp lex fau lt zones is adv isable.