JNWU
西北大学学报(自然科学版)
2010
年
12
月，第
40
卷第
6
期，
Dec.
,2010 ,
Vo
l. 40 ,
No.
6
Joum
a1
of
Northwest
Univer
百
ity
(N atur
a1
Science Edition)
·地球科学与环境科学·
低渗透砂岩储层微观孔隙结构对注水开发的
以丘陵油田三间房组储层为例
董风娟
1
，孙卫
1
，陈文武
2
，姚江荣
2
(1.西北大学大陆动力学国家重点实验室/地质学系，陕西西安
710069;
2.
中国石油吐哈泊田分公司都善采油厂，新疆都善
838202)
摘要:目的探讨丘陵油田三间房组储层微观孔隙结构对注水开发效果的影响。方法
通过铸体
薄片、扫描电镜、高压压呆等实验方法进行试验分析。结果
1，
11
类储层中粒间-溶蚀孔发育，喉
道较粗，连通性好，在高含水期之前，是主力产油和吸水层
;m
类储层中粒间-溶孔较发育，喉道较
细，连通性较差，但孔喉分布范围比较广，在高含水期以后，该类储层变为主力产油层。结论
.:f
L
隙
的类型、连通情况、孔隙·喉道的组合及微裂隙的存在等方面构成的孔隙微观结构非均质性，是影响
研究区注水开发效果的根本原因。
关键词:丘陵油田;三间房纽;微观孔隙结构;高压压呆;注水开发效果
中圈分类号
:TE348
文献标识码
:A
文章编号
:10
∞
-274
X
(2010
)06-1041
-0
5
Inf1
uence of micro-pore structure on wate
rf1
00ding effectiveness in
the low permeability sandstone reservoir:
A case of Sanjianfang reservoir
DONG Feng-juan
1
,
SUN
Wei
1
, CHEN Wen-wu
2
,
YAO
Jiang-rong
2
(1. State
Key
Labo
ratory
of
Continen
ta1
Dyn
amic
s/
Department
of
Ge
ology
,
Northwest
University
, Xi'an
71
∞
69
，
China;
2. Shanshan
Oil
Production
Division
,
Tuha
Oilfield
Company
,
CNPC
, Shanshan 838202 , China)
Abstract:
Aim
To study
the
influences
of
microscopic pore structure
of
Sanjianfang reservoir
on
waterflooding
in
Qiuling oilfield.
Methods
With
the
Experiment
a1
Methods
of
casting
thin
slice,
scanning
electron microscope
and
high pressure
Hg
injection, characteristics
of
pore structures
have
been
reve
a1
ed
from
the
microscopic point
of
view.
Results
Type
l,
IIreservoirs develop combination of intergranular pore - dissolved pore ,
their
throats are wider and
their
connectivity features are better
than
others , which are main oil and absorbent reservoirs before the high water
cut
stage. Intergranular pore - dissolved pore
and
their
connectivity features
in
type m reservoir are p
<1o
r ,
but
the range of
pore is wide
and
throat is
narrow.
咀
lis
type reservoir
tums
into
the
main oil reservoir after
the
high water
cut
stage.
Co
n
cJ
nsion
Heterogeneity
of
microscopic pore structure
is
the
root
cause
of
influence
on
waterflooding effec
tÏ
veness ,
which includes pore types, Connectivity, combination
of
pore
and
throat ,
and
existence of cracks.
Key
words:
Qiuling oilfield; Sanjianfang oil
reservoit;
microscopic pore
structure;
high pressure
Hg
injection;
wa-
terflooding effectiveness
丘陵油田位于吐晗盆地台北凹陷鄙善弧行构造
带西段，构造形态为近东西走向，西高东低，顶缓翼
陡，北缓南陡，是一被断层切割复杂的短轴背
斜
[1
-2]
。三间房组是丘陵油田的主力含油层系，地
收稿日期
:2
∞
9-10-10
层厚
250
-320
m
，平均厚
284.5
m
，物源来自南部的
博格达山。依据地层沉积特征，将三间房组油层划
分为上、下两个油组，油层组上部为一套灰绿色一杂
色泥岩、灰白色砂岩、砂砾岩等不等厚互层的辫状河
基金项目:国家重点基础研究发展规划基金资助项目
(2003CB214606)
作者简介:董凤娟，女，陕西西安人，西北大学博士生，从事泊气田地质与开发研究。
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