利用CT技术研究砾岩驱油机理
Research on displacement mechanism in conglomerate using CT scanning method
查看参考文献14篇
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文摘
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以新疆油田天然砾岩岩心为研究对象，应用CT扫描技术分析砾岩孔隙度分布特征；通过对砾岩水驱及聚合物驱过程的在线CT扫描监测，得到驱替过程中岩心含油饱和度沿程分布信息和CT重构切面图像，根据驱替过程新表征参数“含油饱和度频率分布”分析砾岩驱油机理。研究表明：砾岩具有强非均质性，在水驱过程中形成“优势通道”，引起无效水循环，降低水驱采收率，且水驱过程中首先动用高含油饱和度区域的油；聚合物驱时高-中饱和度区间的油都能够动用，而低饱和度区间的油仍然难以动用；后续水驱时仍然主要动用高饱和度区间的油。针对砾岩油藏，前期水驱应该尽量达到最高含水率，以加强聚合物的段塞效果；同时应减少聚合物的注入量，利用后续水驱推动聚合物段塞达到驱油的目的。 |
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其他语种文摘
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Taking the conglomerate from Xinjiang Oilfield as study object, the porosity distribution characteristics of the conglomerate were analyzed with CT scanning;through the online monitoring of the water and polymer flooding process in a conglomerate core using an CT scanning system, the saturation profile along the core and the CT reconstructed images of core section during the displacing process were obtained; oil displacement mechanism was analyzed according to a new characterization parameter, “oil saturation frequency distribution”. The results show that the conglomerate has strong heterogeneity, resulting in“preferential channels”, and in turn ineffective water circulation and low water flooding oil recovery, moreover, the oil in high oil saturation area is produced first. In polymer flooding, the oil in high and medium oil saturation areas can be produced but the oil in low oil saturation areas still cannot be produced. Oil produced in the subsequent water flooding is still mainly from the high oil saturation areas. For conglomerate reservoirs, previous water flooding should reach as high water cut as possible so as to strengthen the slug effect of the polymer. Meanwhile the injection volume of polymer should be reduced, and a subsequent water flooding should be used to push the polymer slug to produce oil. |
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来源
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石油勘探与开发
,2014,41(3):330-335 【核心库】
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DOI
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10.11698/ped.2014.03.08
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关键词
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砾岩
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CT扫描
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水驱
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聚合物驱
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含油饱和度
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沿程分布
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频率分布
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地址
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1.
中国石油勘探开发研究院, 提高石油采收率国家重点实验室
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中国石油新疆油田公司勘探开发研究院
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中国科学院力学研究所
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-0747 |
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学科
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石油、天然气工业 |
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基金
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国家973计划
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中国石油天然气集团公司项目
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国家863计划
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文献收藏号
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CSCD:5146248
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参考文献 共
14
共1页
|
|
1.
李雄炎. 复杂岩性及多相流体智能识别方法.
石油勘探与开发,2012,39(2):243-248
|
被引
13
次
|
|
|
|
|
2.
冯慧洁. 砾岩油藏聚合物驱微观机理研究.
油田化学,2007,24(3):232-237
|
被引
9
次
|
|
|
|
|
3.
白斌. 利用多尺度CT成像表征致密砂岩微观孔喉结构.
石油勘探与开发,2013,40(3):329-333
|
被引
99
次
|
|
|
|
|
4.
Weifeng Lu.
Measurement of oil recovery by GAGD in water-wet and oil-wet conditions,2013
|
被引
1
次
|
|
|
|
|
5.
冷振鹏. 基于CT扫描测定低渗岩心相对渗透率曲线的方法.
特种油气藏,2013,20(1):118-121
|
被引
5
次
|
|
|
|
|
6.
Wang S Y. Application of computed tomography to oil recovery from porous media.
Applied Optics,1985,24(23):4021-4027
|
被引
7
次
|
|
|
|
|
7.
Withjack E M.
The role of X-ray computed tomography in core analysis. SPE 83467,2003
|
被引
3
次
|
|
|
|
|
8.
Christe P. An X-ray computed tomography-based index to characterize the quality of cataclastic carbonate rock samples.
Engineering Geology,2011,117(3/4):180-188
|
被引
3
次
|
|
|
|
|
9.
吕伟峰. 三相相对渗透率曲线实验测定.
石油勘探与开发,2012,39(6):713-718
|
被引
4
次
|
|
|
|
|
10.
Zhang Zubo.
An experimental study of waterflooding from layered sandstone by CT scanning,2013
|
被引
1
次
|
|
|
|
|
11.
Weifeng Lu.
Measurement of three-phase relative permeabilities of various saturating histories and wettability conditions,2012
|
被引
1
次
|
|
|
|
|
12.
王家禄. 应用CT技术研究岩石孔隙变化特征.
石油学报,2009,30(6):887-893, 896
|
被引
47
次
|
|
|
|
|
13.
吕伟峰. 应用CT扫描技术研究低渗透岩心水驱油机理.
油气地质与采收率,2013,20(2):87-90
|
被引
19
次
|
|
|
|
|
14.
冷振鹏. 利用CT技术研究重力稳定注气提高采收率机理.
石油学报,2013,34(2):340-344
|
被引
14
次
|
|
|
|
|
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