大庆油田萨中水驱深度调剖实践与认识

Prac tice and know ledge of deep plugging on water
flooding in Sazhong development area of Daqing O ilfie ld

袁朝晖

Yuan Zhaohui  .

大庆油田有限责任公司第一采油厂, 黑龙江大庆163001

No. 1 O il Production P lant of
Daqing O ilfield Company Ltd. , CNPC, D aqing 163001,
China

The north area of Duandong Sapu o il layer is the area o f
h ighest w ater - cut in Sazhong developm ent area on wa ter
flooding o f Daqing O ilfield. The insu ffic ient o r ine ffectiv e
circu la tion of injection wa ter is se rious and the econom ic
bene fit is poor. This paper ana lyzes how to identify h igh
perm eab le and high w ate r - flooded strip through
mu lityd isciplina ry resea rch m eans. It also choo ses the narrow
strip r iver sand of the fine flat surface con tinu ity, strong
d irectiona lity, high perm eab le as p lugg ing purpose layer. At
the sam e tim e, the article optim izes design m ethods, adopts
the plugg ing system o f compound ion and the in jection m ethod
o f slug type to ca rry out deep p lugg ing. The resu lt indicates
tha t it effective ly allev iates the contradiction w ith in laye r and
betw een the lay ers, im proves the section of absorb ing w ater,
the number of absorbing wa ter lay ers is inc reased by plugg ing
the h igh perm eab le strip o f the bottom o f th ick o il layer. The
absorbing w ate r capacity o f the bo ttom is effective ly
contro lled, the liqu id production o f connected o il w e lls is
decreased, water - cut is decreased, wh ich prov ides a
re ference fo r deep - p lugg ing on w ater flood ing and has an
im po rtan t theo retica l and prac tica lm ean ing.