Research on evaluation method for water saturation of tight sandstone in Suxi region

被引:1
|
作者
Lv, Hong [1 ]
Lai, Fuqiang [1 ]
Chen, Liang [2 ]
Li, Chao [1 ]
Li, Jie [1 ]
Yi, Heping [1 ]
机构
[1] Chongqing Univ Sci & Technol, Key Lab Complex Oil & Gas Field Explorat & Dev, Chongqing, Peoples R China
[2] PetroChina Int Middle East West Qurna1 Project, Beijing, Peoples R China
基金
中国国家自然科学基金;
关键词
D O I
10.1088/1755-1315/64/1/012040
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The evaluation of irreducible water saturation is important for qualitative and quantitative prediction of residual oil distribution. However, it is to be improved for the accuracy of experimental measuring the irreducible water saturation and logging evaluation. In this paper, firstly the multi-functional core flooding experiment and the nuclear magnetic resonance centrifugation experiment are carried out in the west of Sulige gas field. Then, the influence was discussed about particle size, porosity and permeability on the water saturation. Finally, the evaluation model was established about irreducible water saturation and the evaluation of irreducible water saturation was carried out. The results show that the results of two experiments are both reliable. It is inversely proportional to the median particle size, porosity and permeability, and is most affected by the median particle size. The water saturation of the dry layer is higher than that of the general reservoir. The worse the reservoir property, the greater the water saturation. The test results show that the irreducible water saturation model can be used to evaluate the water floor.
引用
收藏
页数:12
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