动态法划分流动单元—以现河庄油田为例

doi:10.11743/ogg20050118

石油与天然气地质 ›› 2005, Vol. 26 ›› Issue (1): 125-129.doi: 10.11743/ogg20050118

• 勘探开发 • 上一篇

动态法划分流动单元—以现河庄油田为例

王志高^1,2, 靳彦欣³

1. 石油大学, 山东东营, 257061;
2. 中国石化胜利油田有限公司勘探处, 山东东营, 257001;
3. 中国石化胜利油田有限公司采油工艺研究院, 山东东营, 257000

收稿日期:2005-01-13 出版日期:2005-02-25 发布日期:2012-01-16
基金项目:
国家973基础发展规划项目"大幅度提高石油采收率基础研究"(G1999022508)

Dynamic division of flow units:taking Xianhezhuang oilfield as an example

Wang Zhigao^1,2, Jin Yanxin ³

1. University of Petroleum, Dongying, Shandong;
2. Shengli Oilfield Ltd.Co., SINOPEC, Dongying, Shandong;
3. Instiutute of Recovery Technology, Shengli Oilfield Ltd.Co., SINOPEC, Dongying, Shandong

Received:2005-01-13 Online:2005-02-25 Published:2012-01-16

摘要/Abstract

摘要：

根据单采层无水采油期每米采油指数、分布特征以及所对应的空气渗透率和相对渗特征,将河43断块沙河街组二段储层分为5类流动单元:Ⅰ类储层渗透性最好,Ⅱ类储层渗透性较好,Ⅲ类储层渗透性一般,Ⅳ类储层渗透性较差,Ⅴ类储层渗透性差。平面上,厚度大于3.5m的主力小层主要以Ⅰ,Ⅱ和Ⅲ类流动单元为主,厚度小于3.5m的非主力小层主要以Ⅳ和Ⅴ类流动单元为主;垂向上,流动单元分布复杂,甚至同一口井5类流动单元都有。这一特征说明河43断块沙河街组二段储层具有较强的非均质性。不同的流动单元,其相相对渗特征不同,物性好的流动单元油相相对渗透率下降较缓,水相相对渗透率上升较快;反之则油相相对渗透率下降较快,水相相对渗透率上升较缓。

关键词: 流动单元, 储层表征, 储层评价, 油藏描述, 每米采油指数

Abstract:

The 2nd member of Shahejie Formation in He 43 block is divided into 5 flow units according to productivity index per meter of single layer production during water-free oil production period, distribution characteristics and the corresponding characteristics of air-permeability and relative permeability. Permeability of type Ⅰ flow unit is the best, that of type Ⅱ is relatively good, type Ⅲ medium, type Ⅳ relatively poor, and type Ⅴ poor. Laterally, the major subzones with thickness of over 3.5m are mainly of type Ⅰ,Ⅱ and Ⅲ flow units, while the non-major subzones with thickness of less than 3.5m are mainly of typeⅣ and Ⅴ flow units. Vertically, the distribution of flow units are complex, and even all of the five types of flow units can exist concurrently in a single well. This characteristic shows that the reservoirs in the 2nd member of Shahejie Formation in He 43 block have strong heterogeneity. Different flow units have different relative permeability characteristics. Oil-phase relative permeability in flow units with good poroperm characteristics decline slowly, while water-phase relative permeability goes up quickly. On the contrary, oil-phase relative permeability declines quickly, while water-phase relative permeability goes up slowly.

Key words: flow unit, reservoir parameter, reservoir evaluation, reservoir characterization, productivity index per meter

中图分类号:

TE313.5

王志高,靳彦欣. 动态法划分流动单元—以现河庄油田为例[J]. 石油与天然气地质, 2005, 26(1): 125-129. doi: 10.11743/ogg20050118 Wang Zhigao,Jin Yanxin. Dynamic division of flow units:taking Xianhezhuang oilfield as an example[J]. Oil & Gas Geology, 2005, 26(1): 125-129. doi: 10.11743/ogg20050118

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动态法划分流动单元—以现河庄油田为例

Dynamic division of flow units:taking Xianhezhuang oilfield as an example

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