石油与天然气地质 ›› 2003, Vol. 24 ›› Issue (1): 42-44,54.doi: 10.11743/ogg20030110

• 油气空间 • 上一篇    下一篇

盘河断块区孔隙结构与驱油效率

熊敏1,2, 王勤田2   

  1. 1. 中国矿业大学, 北京, 100083;
    2. 中国石化胜利油田有限公司临盘采油厂, 山东临邑, 251507
  • 收稿日期:2002-08-18 出版日期:2003-03-25 发布日期:2012-01-16

PORE STRUCTURE AND OIL DISPLACEMENT EFFICIENCY IN PANHE FAULT-BLOCK AREA

Xiong Min1,2, Wang Qintian 2   

  1. 1. China University of Mining and Technology, Beijing;
    2. Linpan Oil Production Factory in Shengli Oilfield, Linyi, Shandong
  • Received:2002-08-18 Online:2003-03-25 Published:2012-01-16

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摘要：

盘河断块区位于惠民凹陷中央隆起带西部,其沙河街组三段储层可分为4种孔隙结构类型。特高渗特大孔粗喉孔隙结构类型的储层在高含水期驱油效率最高,模拟实验时可达70%～90%,但在实际岩样中,由于结构的非均质性,驱油效率有所降低(40%～75%);高渗大孔粗喉孔隙结构类型的储层驱油效率较高,一般为60%～80%;中渗大孔中喉孔隙结构类型的储层驱油效率较低,一般为40%～60%;低渗中孔细喉孔隙结构类型的储层驱油效率最低,一般为30%～50%。但是,储层的孔隙系统并非由以上4种单一类型组成,而是几种类型的复合。

关键词: 储层, 孔隙, 驱油效率, 盘河断块

Abstract:

Panhe fault-block area is located in the western part of central uplift zone in Huimin sag.The pore structure of reservoir in the 3rd member of Shahejie formation can be divided into four types. The reservoir with super-high permeability, super-large pore and coarse throat pore structure has the highest oil displacement efficiency during the high water-cut stage; the simulation test can be as high as 70%～90%.However,the test run in actual rock sample, the oil displacement efficiency seem to be reduced (40%～75%),due to the non-homogeneous structure. The reservoir with high permeability, large pore and coarse throat pore structure has high oil displacement efficiency, which is usually 60%～80%. The reservoir with medium permeability, large pore and medium throat pore structure has relatively low oil displacement efficiency of about 40%～60%; and the reservoir with low-permeability, medium pore and fine throat has the lowest oil displacement efficiency, 30%～50%.However,the pore system in the reservoir does not consist of only one of the above-mentioned 4 pore structures, it is exactly the composition of several types of pore structures.

Key words: reservoir, pore, oil displacement efficiency, Panhe fault-block

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