2011
年第
35
卷
第
2
期
文章编号:
1673-5005
(2011)
02
-0
096
-0
5
中国石油大学学报(自然科学版)
Joumal of China University of Petroleum
Vo
l. 35
No.2
Apr.2011
低渗透变形介质油藏流人动态关系
王海勇
l
气王厉强
3
飞于晓杰
5
南友利
3
许大伟
6
(1.长江大学石油工程学院,湖北荆州
434023;
2.
吐哈油田夸克沁采油厂,新疆部善
838202;
3.
吐哈油田勘探开发研究院,新疆哈密
839009;
4.
中国石油大学博士后科研流动站,北京
102249;
5.
吐哈油田工程技术研究院,新疆哈密
839009;
6.
中国石油辽河石油勘探局通信公司,辽宁盘锦
124010)
摘要:针对已有低渗透油藏流入动态关系偏重于分析启动压力对产能影响以及某些关系式仅适用于弱应力敏感性
的现状,建立适用于微裂缝发育或人工压裂缝等考虑强应力敏感性的无因次流入动态通式。在无因次流入动态影
响因素的敏感性分析中,克服常规分析中固定目标影响因素外所有参数的静态处理缺陆,对储层变形系数与目标影
响因素进行动态组合分析。结果表明:随变形系数由零转变为非零值并逐渐增大,流入动态曲线由抛物线型向
S
型
转变,储层压敏效应对产能影响趋于显著;主要影响因素敏感性由高到低一般为启动压力、地层平均压力、污染程
度、供给半径,但在不同的流压和产量区间,影响因素敏感性排序并非固定不变,而且每个影响因素自身也存在不同
的敏感性变化区间。
关键词:低渗泊藏;变形介质;裂缝;启动压力梯度;流入动态
中图分类号
:TE
348
文献标志码:
A doi: 10.
3969/j.
issn. 1673-5005.201
1.
02. 017
Inflow performance relationship for low permeability & deformed
media reservoir
WANG
Hai-yong
1
• 2
, W
ANG
Li-qiang
3
.
4
,
YU
Xiao-jie
5
,
NAN
You-li3
,
XU
Da-wei
6
(
1.
lnstitute 01 Petroleum
EngineeriT
咳
,
Yangtze
Univers
町
,
Jingzhou 434023 , China; 2. Lukeqin Oil Production Plant ,
Tuh
α
Oilfìeld
,
Shanshan 838202, China; 3. Research lnstitute
01
Petroleum Exploration & Developrnent ,
Tuha Oilfìeld , Hami 839009 , China; 4. Post-Doctoral Mobile
St
α
tion
in China University
01
Petroleum ,
Beijing 102249 , China;
5.
Engineering Technology lnstitute , Tuha
Oi
庐
eld
,
Hami 839009 , China;
6. Communication
Comrnon Carrier
01
Liaohe Petroleum Exploration
Bure
α
u
,
PetroChin
α
,
Panjin 124010 , China)
Abstract:
With respect
to
existing i
nf1
0w
performance relationship (
IPR)
for
low
permeability reservoirs emphasizing the
effect of start-up pressure on productivity and some formula applying only
to
weak stress sensitivity , a non-dimensional i
nf1
0w
perfo
口
nance
relationship considering strong stress sensitivity suitable for micro-fracture development or artificial pressure
crack was established. In the sensitivity analysis of non-dimensional i
nf1
0w
performance i
nf1
uence factors , static processing
defects of the routine analyzing were overcome
, that is to say , all i
nf1
uencing factors were fixed outside target
p
缸
ameters.
The dynamic combination analysis of reservoir distortion coefficient and target i
nf1
uencing factors
was
done. The results show
that the type of IPR curve transfers
"s" type from parabola one when the deformed factor gradually increases from zero
to
non-zero , the stress-sensitivity of reservoir can obviously affect productivity with evidence. The sensitivity degree of i
nf1
uen-
cing factors
from
strong
to
weak is start-up pressure , average formation pressure , damage degree , drainage radius , but the
sensitivity rank may change in different
flow
pressure region and production region. Also , each factor affecting the
IPR
curve
exists differently sensitive scope itsel
f.
Key
words:
low-permeability reservoir; deformed medium; fracture; start-up pressure gradient; i
nf1
0w
performance relation-
ship
收稿日期
:2010-05-17
基金项目:国家科技支撑项目
(2007BAB17B05
)
作者简介:王海勇(1
974
一)
,男(汉族)
,甘肃会宁人,工程师,硕士,从事油气田开发研究工作。